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BANC OF AMERICA MORTGAGE SECURITIES, INC., as Depositor, BANK OF AMERICA, NATIONAL ASSOCIATION, as Servicer, and WELLS FARGO BANK, N.A., as Trustee POOLING AND SERVICING AGREEMENT Dated March 29, 2007

Pooling and Servicing Agreement

BANC OF AMERICA MORTGAGE SECURITIES, INC., as Depositor, BANK OF AMERICA, NATIONAL ASSOCIATION, as Servicer, and WELLS FARGO BANK, N.A., as Trustee POOLING AND SERVICING AGREEMENT Dated March 29, 2007 | Document Parties: BANC OF AMERICA MORTGAGE SECURITIES, INC. | BANK OF AMERICA, NATIONAL ASSOCIATION | WELLS FARGO BANK, NA You are currently viewing:
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BANC OF AMERICA MORTGAGE SECURITIES, INC. | BANK OF AMERICA, NATIONAL ASSOCIATION | WELLS FARGO BANK, NA

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Title: BANC OF AMERICA MORTGAGE SECURITIES, INC., as Depositor, BANK OF AMERICA, NATIONAL ASSOCIATION, as Servicer, and WELLS FARGO BANK, N.A., as Trustee POOLING AND SERVICING AGREEMENT Dated March 29, 2007
Governing Law: New York     Date: 4/13/2007

BANC OF AMERICA MORTGAGE SECURITIES, INC., as Depositor, BANK OF AMERICA, NATIONAL ASSOCIATION, as Servicer, and WELLS FARGO BANK, N.A., as Trustee POOLING AND SERVICING AGREEMENT Dated March 29, 2007, Parties: banc of america mortgage securities  inc. , bank of america  national association , wells fargo bank  na
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                   BANC OF AMERICA MORTGAGE SECURITIES, INC.,
                                  as Depositor,

                     BANK OF AMERICA, NATIONAL ASSOCIATION,
                                   as Servicer,

                                       and

                             WELLS FARGO BANK, N.A.,
                                   as Trustee

                         POOLING AND SERVICING AGREEMENT

                               Dated March 29, 2007


--------------------------------------------------------------------------------

<PAGE>

                                TABLE OF CONTENTS


                                    ARTICLE I

                                    DEFINITIONS

Section 1.01   Defined Terms................................................
Section 1.02   Interest Calculations........................................
Section 1.03   Fiscal Year..................................................


                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS
                        ORIGINAL ISSUANCE OF CERTIFICATES

Section 2.01   Conveyance of Mortgage Loans.................................
Section 2.02   Acceptance by the Trustee of the Mortgage Loans..............
Section 2.03   Representations and Warranties of the Servicer...............
Section 2.04   Representations and Warranties of the Depositor as to the
               Mortgage Loans..............................................
Section 2.05   Designation of Interests in the REMICs.......................
Section 2.06   Designation of Start-up Day..................................
Section 2.07   REMIC Certificate Maturity Date..............................
Section 2.08   Execution and Delivery of Certificates.......................


                                   ARTICLE III

                          ADMINISTRATION AND SERVICING
                                OF MORTGAGE LOANS

Section 3.01   Servicer to Service Mortgage Loans...........................
Section 3.02   Subservicing; Enforcement of the Obligations of Servicer.....
Section 3.03   Fidelity Bond; Errors and Omissions Insurance................
Section 3.04   Access to Certain Documentation..............................
Section 3.05   Maintenance of Primary Insurance Policy; Claims;
               Collections of BPP Mortgage Loan Payments...................
Section 3.06   Rights of the Depositor and the Trustee in Respect of the
               Servicer....................................................
Section 3.07   Trustee to Act as Servicer...................................
Section 3.08   Collection of Mortgage Loan Payments; Servicer Custodial
               Account; Certificate Account; Reserve Funds; and Yield
               Maintenance Agreements......................................
Section 3.09   Collection of Taxes, Assessments and Similar Items;
               Escrow Accounts.............................................
Section 3.10   Access to Certain Documentation and Information Regarding
               the Mortgage Loans..........................................
Section 3.11   Permitted Withdrawals from the Servicer Custodial Account
               and Certificate Account.....................................
Section 3.12   Maintenance of Hazard Insurance..............................
Section 3.13   Enforcement of Due-On-Sale Clauses; Assumption Agreements....
Section 3.14   Realization Upon Defaulted Mortgage Loans; REO Property......
Section 3.15   Trustee to Cooperate; Release of Mortgage Files..............
Section 3.16   Documents, Records and Funds in Possession of the
               Servicer to Be Held for the Trustee.........................
Section 3.17   Servicing Compensation.......................................
Section 3.18   Annual Statement as to Compliance............................
Section 3.19   Assessments of Servicing Compliance; Registered Public
               Accounting Firm Attestation Reports.........................
Section 3.20   Advances.....................................................
Section 3.21   Modifications, Waivers, Amendments and Consents..............
Section 3.22   Reports to the Securities and Exchange Commission............


                                   ARTICLE IV

                             SERVICER'S CERTIFICATE

Section 4.01   Servicer's Certificate.......................................


                                    ARTICLE V

                PAYMENTS AND STATEMENTS TO CERTIFICATEHOLDERS;
                               REMIC ADMINISTRATION

Section 5.01   Distributions................................................
Section 5.02   Priorities of Distributions..................................
Section 5.03   Allocation of Losses.........................................
Section 5.04   Statements to Certificateholders.............................
Section 5.05   Tax Returns and Reports to Certificateholders................
Section 5.06   Tax Matters Person...........................................
Section 5.07   Rights of the Tax Matters Person in Respect of the
               Trustee.....................................................
Section 5.08   REMIC Related Covenants......................................
Section 5.09   Determination of LIBOR.......................................
Section 5.10   Grantor Trust Administration.................................
Section 5.11   Distributions................................................


                                   ARTICLE VI

                                 THE CERTIFICATES

Section 6.01   The Certificates.............................................
Section 6.02   Registration of Transfer and Exchange of Certificates........
Section 6.03   Transfer of Exchangeable REMIC Certificates and
               Exchangeable Certificates...................................
Section 6.04   Exchanges of Exchangeable REMIC Certificates and
               Exchangeable Certificates...................................
Section 6.06   Mutilated, Destroyed, Lost or Stolen Certificates............
Section 6.07   Persons Deemed Owners........................................


                                   ARTICLE VII

                         THE DEPOSITOR AND THE SERVICER

Section 7.01 Respective Liabilities of the Depositor and the Servicer......
Section 7.02 Merger or Consolidation of the Depositor or the Servicer......
Section 7.03 Limitation on Liability of the Depositor, the Servicer
               and Others..................................................
Section 7.04   Depositor and Servicer Not to Resign.........................
Section 7.05   Assignment or Delegation of Duties by the Servicer...........


                                  ARTICLE VIII

                                     DEFAULT

Section 8.01   Events of Default............................................
Section 8.02   Remedies of Trustee..........................................
Section 8.03   Directions by Certificateholders and Duties of Trustee
               During Event of Default.....................................
Section 8.04   Action upon Certain Failures of the Servicer and upon
               Event of Default............................................
Section 8.05   Trustee to Act; Appointment of Successor.....................
Section 8.06   Notification to Certificateholders...........................


                                   ARTICLE IX

                                   THE TRUSTEE

Section 9.01   Duties of Trustee............................................
Section 9.02   Certain Matters Affecting the Trustee........................
Section 9.03   Trustee Not Liable for Certificates or Mortgage Loans........
Section 9.04   Trustee May Own Certificates.................................
Section 9.05   Eligibility Requirements for Trustee.........................
Section 9.06   Resignation and Removal of Trustee...........................
Section 9.07   Successor Trustee............................................
Section 9.08   Merger or Consolidation of Trustee...........................
Section 9.09   Appointment of Co-Trustee or Separate Trustee................
Section 9.10   Authenticating Agents........................................
Section 9.11   Trustee's Fees and Expenses..................................
Section 9.12   Appointment of Custodian.....................................
Section 9.13   Paying Agents................................................
Section 9.14   Limitation of Liability......................................
Section 9.15   Trustee May Enforce Claims Without Possession of
                Certificates................................................
Section 9.16   Suits for Enforcement........................................
Section 9.17   Waiver of Bond Requirement...................................
Section 9.18   Waiver of Inventory, Accounting and Appraisal Requirement....


                                    ARTICLE X

                                   TERMINATION

Section 10.01 Termination upon Purchase by the Depositor or Liquidation
               of All Mortgage Loans.......................................
Section 10.02 Additional Termination Requirements..........................


                                   ARTICLE XI

                            MISCELLANEOUS PROVISIONS

Section 11.01 Amendment....................................................
Section 11.02 Recordation of Agreement.....................................
Section 11.03 Limitation on Rights of Certificateholders...................
Section 11.04 Governing Law................................................
Section 11.05 Notices......................................................
Section 11.06 Severability of Provisions...................................
Section 11.07 Certificates Nonassessable and Fully Paid....................
Section 11.08 Access to List of Certificateholders.........................
Section 11.09 Recharacterization...........................................
Section 11.10 Insolvency...................................................
Section 11.11 Regulation AB Compliance; Intent of Parties;
               Reasonableness..............................................

<PAGE>

EXHIBITS
Exhibit A-1       -   Form of Face of Senior Certificates.................
Exhibit A-2       -   Form of Face of Residual Certificate................
Exhibit B         -   Form of Face of Subordinate Certificate.............
Exhibit C         -   Form of Reverse of all Certificates.................
Exhibit D         -   Addresses for Requesting Mortgage Loan
                     Schedule ..........................................
Exhibit E         -   Request for Release of Documents....................
Exhibit F         -   Form of Certification of Establishment of
                     Account............................................
Exhibit G-1       -   Form of Transferor's Certificate....................
Exhibit G-2A      -   Form 1 of Transferee's Certificate..................
Exhibit G-2B      -   Form 2 of Transferee's Certificate..................
Exhibit H         -   Form of Transferee Representation Letter for
                      ERISA Restricted Certificates......................
Exhibit I         -   Form of Affidavit Regarding Transfer of
                     Residual Certificate...............................
Exhibit J         -   Contents of Servicing File..........................
Exhibit K         -   Form of Special Servicing Agreement.................
Exhibit L         -   List of Recordation States..........................
Exhibit M         -   Form of Initial Certification of the Trustee........
Exhibit N         -   Form of Final Certification of the Trustee..........
Exhibit O         -   Form of Sarbanes-Oxley Certification................
Exhibit P         -   Form of Trustee's Certification.....................
Exhibit Q         -   Servicing Criteria..................................
Exhibit R-1       -   Additional Form 10-D Information ...................
Exhibit R-2       -   Additional Form 10-K Information ...................
Exhibit R-3       -   Form 8-K Information ...............................
Exhibit S-1       -   Class 3-A-11 Yield Maintenance Agreement............
Exhibit S-2       -   Class 3-A-16 Yield Maintenance Agreement............
Exhibit T         -   Planned Balance Schedules and Targeted
                     Balance Schedules..................................
Exhibit U            Combination Groups..................................
Exhibit V            Form of Request for Exchange of Exchangeable
                       REMIC Certificates or Exchangeable
                     Certificates.......................................

<PAGE>

                         POOLING AND SERVICING AGREEMENT

            THIS POOLING AND SERVICING AGREEMENT, dated March 29, 2007, is
hereby executed by and among BANC OF AMERICA MORTGAGE SECURITIES, INC., as
depositor (together with its permitted successors and assigns, the "Depositor"),
BANK OF AMERICA, NATIONAL ASSOCIATION, as servicer (together with its permitted
successors and assigns, the "Servicer"), and WELLS FARGO BANK, N.A., as trustee
(together with its permitted successors and assigns, the "Trustee").

                          W I T N E S S E T H   T H A T:

            In consideration of the mutual agreements herein contained, the
Depositor, the Servicer and the Trustee agree as follows:

                              PRELIMINARY STATEMENT

            In exchange for the Certificates, the Depositor hereby conveys the
Trust Estate to the Trustee to create the Trust. The Trust Estate for federal
income tax purposes will be treated as three separate real estate mortgage
investment conduits (the "Upper-Tier REMIC," the "Middle-Tier REMIC" and the
"Lower-Tier REMIC," respectively, and each, a "REMIC"). The Certificates (other
than Exchangeable Certificates, the Class 3-A-R Certificate and the right of the
Class 3-A-11 and Class 3-A-16 Certificates to receive amounts from the
applicable Reserve Fund) are referred to collectively as the "Regular
Certificates" and shall constitute "regular interests" in the Upper-Tier REMIC.
The Uncertificated Middle-Tier Interests shall constitute the "regular
interests" in the Middle-Tier REMIC. The Uncertificated Lower-Tier Interests
shall constitute the "regular interests" in the Lower-Tier REMIC. The Class R-U
Interest shall be the sole "residual interest" in the Upper-Tier REMIC. The
Class R-M Interest shall be the sole "residual interest" in the Middle-Tier
REMIC. The Class R-L Interest shall be the sole "residual interest" in the
Lower-Tier REMIC. The Class 3-A-R Certificate shall represent ownership of the
Class R-U Interest, the Class R-M Interest and the Class R-L Interest. The
portion of the Trust Estate consisting of the Exchangeable Certificates, the
Reserve Funds and the Yield Maintenance Agreements and the right of the Class
3-A-11 and Class 3-A-16 Certificates to receive amounts from the applicable
Reserve Fund shall not be assets of any REMIC created hereunder, but rather
shall be assets of the Grantor Trust. The assets of the Grantor Trust, the
Certificates and the Uncertificated Lower-Tier Interests will represent the
entire beneficial ownership interest in the Trust. The "latest possible maturity
date" for federal income tax purposes of all interests created hereby will be
the REMIC Certificate Maturity Date.


            The following tables set forth characteristics of the Certificates,
together with the minimum Denominations and integral multiples in excess thereof
in which the Classes of Certificates shall be issuable:


                Initial Class                                          Integral
                 Certificate                                         Multiples in
                 Balance or          Pass-Through        Minimum        Excess of
Classes         Notional Amount           Rate          Denomination      Minimum
------------    ---------------       ------------      ------------    ------------

Class 1-A-1      $38,568,000.00                 (2)           $1,000              $1
Class 2-A-1      $63,977,000.00                 (3)           $1,000              $1
Class 2-A-2       $7,109,000.00                 (3)           $1,000              $1
Class 3-A-1      $13,980,000.00(1)           5.750%           $1,000              $1
Class 3-A-2       $1,554,000.00(1)           5.750%           $1,000              $1
Class 3-A-3         $647,250.00(1)           6.000%         $100,000               $1
Class 3-A-4      $69,911,000.00(1)           5.500%           $1,000              $1
Class 3-A-5       $5,825,916.00(1)           6.000%         $100,000              $1
Class 3-A-6       $9,883,000.00(1)           5.500%           $1,000              $1
Class 3-A-7         $823,583.00(1)           6.000%         $100,000              $1
Class 3-A-8      $12,047,000.00(1)           5.500%           $1,000              $1
Class 3-A-9       $1,003,916.00(1)           6.000%         $100,000              $1
Class 3-A-10     $10,205,000.00              6.000%           $1,000              $1
Class 3-A-11     $31,318,000.00                 (4)           $1,000              $1
Class 3-A-12     $31,318,000.00(1)              (5)       $1,000,000              $1
Class 3-A-13      $4,090,000.00(1)           6.000%           $1,000              $1
Class 3-A-14         $10,000.00              6.000%           $1,000              $1
Class 3-A-15         $10,000.00              6.000%           $1,000              $1
Class 3-A-16     $30,000,000.00                  (6)           $1,000              $1
Class 3-A-17     $30,000,000.00(1)              (7)       $1,000,000              $1
Class 3-A-18     $15,534,000.00(1)           5.750%           $1,000              $1
Class 3-A-19     $13,980,000.00(1)           6.000%            $1,000              $1
Class 3-A-20      $1,554,000.00(1)           6.000%           $1,000              $1
Class 3-A-21     $15,534,000.00(1)           6.000%           $1,000              $1
Class 3-A-22      $5,644,000.00(1)           6.000%           $1,000               $1
Class 3-A-23     $69,911,000.00(1)           5.750%           $1,000              $1
Class 3-A-24     $69,911,000.00(1)           6.000%           $1,000              $1
Class 3-A-25      $9,883,000.00(1)           5.750%           $1,000              $1
Class 3-A-26      $9,883,000.00(1)           6.000%           $1,000              $1
Class 3-A-27     $12,047,000.00(1)           5.750%           $1,000              $1
Class 3-A-28     $12,047,000.00(1)           6.000%           $1,000              $1
Class 3-A-29      $79,794,000.00(1)           5.500%           $1,000              $1
Class 3-A-30     $79,794,000.00(1)           5.750%           $1,000              $1
Class 3-A-31     $79,794,000.00(1)           6.000%           $1,000              $1
Class 3-A-32     $91,841,000.00(1)           5.500%           $1,000              $1
Class 3-A-33     $91,841,000.00(1)           5.750%           $1,000              $1
Class 3-A-34     $91,841,000.00(1)           6.000%           $1,000              $1
Class 3-A-35     $61,318,000.00(1)               (8)       $1,000,000              $1
Class 3-A-R             $100.00              6.000%             $100        N/A
Class 3-PO          $575,818.00                 (9)          $25,000              $1
Class 3-IO       $20,392,665.00              6.000%       $1,000,000              $1
Class 4-A-1      $40,000,000.00                (10)           $1,000              $1
Class M           $7,302,000.00                (11)          $25,000              $1
Class B-1         $3,562,000.00                (11)          $25,000               $1
Class B-2         $4,097,000.00                (11)          $25,000              $1
Class B-3         $3,028,000.00                (11)          $25,000              $1
Class B-4         $1,959,000.00                (11)          $25,000              $1
Class B-5         $1,603,000.00                (11)          $25,000              $1
Class B-6         $1,424,996.00                (11)          $25,000              $1

---------------
(1)    Maximum Initial Class Certificate Balance or Maximum Initial Class
      Notional Amount.

(2)    Interest will accrue on these Certificates at a per annum rate equal to
      the Net WAC of the Group 1 Mortgage Loans.

(3)    Interest will accrue on these Certificates at a per annum rate equal to
      the Net WAC of the Group 2 Mortgage Loans.

(4)    During the initial Interest Accrual Period, interest will accrue on the
      Class 3-A-11 Certificates at the rate of 5.920% per annum. During each
      Interest Accrual Period thereafter, interest will accrue on the Class
      3-A-11 Certificates at a per annum rate equal to (i) 0.600% plus (ii)
      LIBOR, subject to a minimum rate of 0.600% and a maximum rate of 6.000%.

(5)    During the initial Interest Accrual Period, interest will accrue on the
      Class 3-A-12 Certificates at the rate of 0.0800% per annum. During each
      Interest Accrual Period thereafter, interest will accrue on the Class
      3-A-12 Certificates at a per annum rate equal to (i) 5.400% minus (ii)
      LIBOR, subject to a minimum rate of 0.000% and a maximum rate of 5.400%.

(6)    During the initial Interest Accrual Period, interest will accrue on the
      Class 3-A-16 Certificates at the rate of 5.920% per annum. During each
      Interest Accrual Period thereafter, interest will accrue on the Class
      3-A-16 Certificates at a per annum rate equal to (i) 0.600% plus (ii)
      LIBOR, subject to a minimum rate of 0.600% and a maximum rate of 6.000%.

(7)    During the initial Interest Accrual Period, interest will accrue on the
      Class 3-A-17 Certificates at the rate of 0.0800% per annum. During each
      Interest Accrual Period thereafter, interest will accrue on the Class
      3-A-17 Certificates at a per annum rate equal to (i) 5.400% minus (ii)
      LIBOR, subject to a minimum rate of 0.000% and a maximum rate of 5.400%.

(8)    During the initial Interest Accrual Period, interest will accrue on the
      Class 3-A-35 Certificates at the rate of 0.0800% per annum. During each
      Interest Accrual Period thereafter, interest will accrue on the Class
      3-A-35 Certificates at a per annum rate equal to (i) 5.400% minus (ii)
      LIBOR, subject to a minimum rate of 0.000% and a maximum rate of 5.400%.

(9)    The Class 3-PO Certificates are Principal Only Certificates and will not
      be entitled to distributions of interest.

(10)   Interest will accrue on these Certificates at a per annum rate equal to
      the weighted average (based on the Stated Principal Balances of the
      Mortgage Loans on the Due Date in the month preceding the month of the
      applicable Distribution Date) of the Net Mortgage Interest Rates of the
      Mortgage Loans in Loan Group 1 and Loan Group 2.

(11)   Interest will accrue on these Certificates at a per annum rate equal to
      the weighted average (based on the Group Subordinate Amount for the
      related Loan Group or Assumed Loan Group, as applicable) of (i) with
      respect to Loan Group 1, the Net WAC of the Group 1 Mortgage Loans, (ii)
      with respect to Loan Group 2, the Net WAC of the Group 2 Mortgage Loans,
      (iii) with respect to Assumed Loan Group 3, 6.000% and (iv) with respect
      to Assumed Loan Group 4, the Net WAC of the Group 3 Mortgage Loans.

<PAGE>

                                   ARTICLE I

                                    DEFINITIONS

            Section 1.01 Defined Terms. Whenever used in this Agreement, the
following words and phrases, unless the context otherwise requires, shall have
the meanings specified in this Article:

            10-K Filing Deadline: As defined in Section 3.22(c).

            1933 Act: The Securities Act of 1933, as amended.

            Accrued Certificate Interest: For any Distribution Date and each
interest-bearing Class (other than a Class of Exchangeable Certificates), one
month's interest accrued during the related Interest Accrual Period at the
applicable Pass-Through Rate on the applicable Class Certificate Balance or
Notional Amount.

            Accretion Termination Date: (a) For the Class 3-A-14 Certificates
will be the earlier to occur of (i) the Distribution Date following the
Distribution Date on which the Class Certificate Balance of the Class 3-A-11
Certificates has been reduced to zero or (ii) the Senior Credit Support
Depletion Date and (b) for the Class 3-A-15 Certificates will be the earlier to
occur of (i) the Distribution Date following the Distribution Date on which the
Class Certificate Balances of the Class 3-A-11 and Class 3-A-14 Certificates
have been reduced to zero or (ii) the Senior Credit Support Depletion Date.

            Additional Form 10-D Information: As defined in Section 3.22(b).

            Additional Form 10-K Information: As defined in Section 3.22(c).

            Additional Servicer: As defined in Section 3.02(e)

            Adjusted Pool Amount: With respect to any Distribution Date and Loan
Group 1 and Loan Group 2, the Cut-off Date Pool Principal Balance of the
Mortgage Loans in such Loan Group minus the sum of (i) all amounts in respect of
principal received in respect of the Mortgage Loans in such Loan Group
(including, without limitation, amounts received as Monthly Payments, Periodic
Advances, Principal Prepayments, Liquidation Proceeds and Substitution
Adjustment Amounts) and distributed to Holders of the Certificates on such
Distribution Date and all prior Distribution Dates and (ii) the principal
portion of all Realized Losses (other than Debt Service Reductions) incurred on
the Mortgage Loans in such Loan Group from the Cut-off Date through the end of
the month preceding such Distribution Date. With respect to any Distribution
Date and Assumed Loan Group 3 or Assumed Loan Group 4, the product of the (a)
the applicable Allocation Percentage and (b) the Cut-off Date Pool Principal
Balance of the Group 3 Mortgage Loans minus the sum of (i) all amounts in
respect of principal received in respect of the Group 3 Mortgage Loans
(including, without limitation, amounts received as Monthly Payments, Periodic
Advances, Principal Prepayments, Liquidation Proceeds and Substitution
Adjustment Amounts) and distributed to Holders of the Certificates on such
Distribution Date and all prior Distribution Dates and (ii) the principal
portion of all Realized Losses (other than Debt Service Reductions) incurred on
the Group 3 Mortgage Loans from the Cut-off Date through the end of the month
preceding such Distribution Date.

            Adjusted Pool Amount (Non-PO Portion): With respect to any
Distribution Date and Loan Group or Assumed Loan Group, the difference between
the Adjusted Pool Amount for such Loan Group or Assumed Loan Group and the
Adjusted Pool Amount (PO Portion) for such Loan Group or Assumed Loan Group.

            Adjusted Pool Amount (PO Portion): With respect to any Distribution
Date and Loan Group 1, Loan Group 2 and Assumed Loan Group 4 is equal to zero.
With respect to any Distribution Date and Assumed Loan Group 3, the sum of the
amounts, calculated as follows, with respect to all Outstanding Mortgage Loans
of Loan Group 3: the product of (i) the PO Percentage for each such Mortgage
Loan, (ii) 86.4254982888% and (iii) the remainder of (A) the Cut-off Date
Principal Balance of such Group 3 Mortgage Loan minus (B) the sum of (x) all
amounts in respect of principal received in respect of such Group 3 Mortgage
Loan (including, without limitation, amounts received as Monthly Payments,
Periodic Advances, Principal Prepayments, Liquidation Proceeds and Substitution
Adjustment Amounts) and distributed to Holders of the Certificates on such
Distribution Date and all prior Distribution Dates and (y) the principal portion
of any Realized Loss (other than a Debt Service Reduction) incurred on such
Group 3 Mortgage Loan from the Cut-off Date through the end of the month
preceding such Distribution Date.

            Advance: A Periodic Advance or a Servicing Advance.

            Aggregate Subordinate Percentage: As to any Distribution Date, the
aggregate Class Certificate Balance of the Subordinate Certificates divided by
the aggregate Pool Stated Principal Balance (Non-PO Portion) for Loan Group 1,
Loan Group 2, Assumed Loan Group 3 and Assumed Loan Group 4.

            Agreement: This Pooling and Servicing Agreement together with all
amendments hereof and supplements hereto.

            Allocation Percentage: With respect to any Distribution Date and
Loan Group 1 and Loan Group 2 is 100%, for Assumed Loan Group 3 is
86.4254982888% and for Assumed Loan Group 4 is 13.5745017112%.

            Amount Held for Future Distribution: As to any Distribution Date and
Loan Group, the total of the amounts held in the Servicer Custodial Account at
the close of business on the preceding Determination Date on account of (i)
Principal Prepayments and Liquidation Proceeds received or made on the Mortgage
Loans in such Loan Group in the month of such Distribution Date and (ii)
payments which represent receipt of Monthly Payments on the Mortgage Loans in
such Loan Group in respect of a Due Date or Due Dates subsequent to the related
Due Date.

            Ancillary Income: All prepayment premiums (if any), assumption fees,
late payment charges and all other ancillary income and fees with respect to the
Mortgage Loans.

            Appraised Value: With respect to any Mortgaged Property, either (i)
the lesser of (a) the appraised value determined in an appraisal obtained by the
originator at origination of such Mortgage Loan or an automated valuation model
or tax assessed value (if permitted by the applicable mortgage loan program) and
(b) the sales price for such property, except that, in the case of Mortgage
Loans the proceeds of which were used to refinance an existing mortgage loan,
the Appraised Value of the related Mortgaged Property is the appraised value
thereof determined either in an appraisal obtained at the time of refinancing or
an automated valuation model or tax assessed value (if permitted by the
applicable mortgage loan program), or (ii) the appraised value determined in an
appraisal made at the request of a Mortgagor subsequent to origination in order
to eliminate the Mortgagor's obligation to keep a Primary Insurance Policy in
force.

            Assignment of Mortgage: An individual assignment of the Mortgage,
notice of transfer or equivalent instrument in recordable form, sufficient under
the laws of the jurisdiction wherein the related Mortgaged Property is located
to give record notice of the sale of the Mortgage.

            Assumed Loan Group: Either of Assumed Loan Group 3 or Assumed Loan
Group 4.

            Assumed Loan Group 3: A loan group which represents for each
Distribution Date 86.4254982888% of each Group 3 Mortgage Loan.

            Assumed Loan Group 4: A loan group which represents for each
Distribution Date 13.5745017112% of each Group 3 Mortgage Loan

            Authenticating Agents: As defined in Section 9.10.

            Bank of America: Bank of America, National Association, a national
banking association, or its successor in interest.

            BBA: As defined in Section 5.09.

            Book-Entry Certificate: Any Class of Certificates other than the
Physical Certificates.

             BPP Mortgage Loan: Any Mortgage Loan which includes a Borrowers
Protection Plan(R) addendum to the related Mortgage Note whereby Bank of America
agrees to cancel (i) certain payments of principal and interest on such Mortgage
Loan for up to twelve months upon the disability or involuntary unemployment of
the Mortgagor or (ii) the outstanding principal balance of the Mortgage Loan
upon the accidental death of the Mortgagor; provided that such Borrowers
Protection Plan(R) has not been terminated in accordance with its terms.

            BPP Mortgage Loan Payment: With respect to any BPP Mortgage Loan,
the Monthly Covered Amount or Total Covered Amount, if any, payable by Bank of
America pursuant to Section 5 of the Mortgage Loan Purchase Agreement.

             Business Day: Any day other than (i) a Saturday or a Sunday or (ii)
a day on which banking institutions in the State of North Carolina, the State of
New York, the State of Minnesota, each state in which the servicing offices of
the Servicer are located or each state in which the Corporate Trust Office is
located are required or authorized by law or executive order to be closed.

            Buy-Down Account: The separate Eligible Account or Accounts created
and maintained by the Servicer pursuant to Section 3.23.

            Buy-Down Agreement: An agreement governing the application of
Buy-Down Funds with respect to a Buy-Down Mortgage Loan.

            Buy-Down Funds: Money advanced by a builder, seller or other
interested party to reduce a Mortgagor's monthly payment during the initial
years of a Buy-Down Mortgage Loan.

            Buy-Down Mortgage Loan: Any Mortgage Loan in respect of which,
pursuant to a Buy-Down Agreement, the monthly interest payments made by the
related Mortgagor will be less than the scheduled monthly interest payments on
such Mortgage Loan, with the resulting difference in interest payments being
provided from Buy-Down Funds.

            Calculated Principal Distribution: As defined in Section 5.03(d).

            Certificate: Any of the Banc of America Alternative Loan Trust
2007-1 Mortgage Pass-Through Certificates, Series 2007-1 that are issued
pursuant to this Agreement.

            Certificate Account: The Eligible Account created and maintained by
the Trustee pursuant to Section 3.08(c) in the name of the Trustee for the
benefit of the Certificateholders and designated "Wells Fargo Bank, N.A., in
trust for registered holders of Banc of America Alternative Loan Trust 2007-1,
Mortgage Pass-Through Certificates, Series 2007-1." The Certificate Account
shall be deemed to consist of four sub-accounts; one for each Group and a fourth
sub-account referred to herein as the Upper-Tier Certificate Sub-Account and the
Exchangeable Certificate Grantor Trust Account shall be deemed to be
sub-accounts of the Certificate Account. Funds in the Certificate Account shall
be held in trust for the Holders of the Certificates of such Group for the uses
and purposes set forth in this Agreement.

            Certificate Balance: With respect to any Certificate (other than an
Exchangeable Certificate) at any date, the maximum dollar amount of principal to
which the Holder thereof is then entitled hereunder, such amount being equal to
the product of the Percentage Interest of such Certificate and the Class
Certificate Balance of the Class of Certificates of which such Certificate is a
part.

            Certificate Custodian: Initially, Wells Fargo Bank, N.A.; thereafter
any other Certificate Custodian acceptable to the Depository and selected by the
Trustee.

            Certificate Owner: With respect to a Book-Entry Certificate, the
Person who is the beneficial owner of a Book-Entry Certificate. With respect to
any Definitive Certificate, the Certificateholder of such Certificate.

             Certificate Register: The register maintained pursuant to Section
6.02.

            Certificate Registrar: The registrar appointed pursuant to Section
6.02.

            Certificateholder: The Person in whose name a Certificate is
registered in the Certificate Register, except that, solely for the purpose of
giving any consent pursuant to this Agreement, any Certificate registered in the
name of the Depositor, the Servicer or any affiliate thereof shall be deemed not
to be outstanding and the Percentage Interest and Voting Rights evidenced
thereby shall not be taken into account in determining whether the requisite
amount of Percentage Interests or Voting Rights, as the case may be, necessary
to effect any such consent has been obtained, unless such entity is the
registered owner of the entire Class of Certificates, provided that the Trustee
shall not be responsible for knowing that any Certificate is registered in the
name of such an affiliate unless one of its Responsible Officers has actual
knowledge.

            Certification: As defined in Section 3.22(c).

            Class: As to the Certificates, the Class 1-A-1, Class 2-A-1, Class
2-A-2, Class 3-A-1, Class 3-A-2, Class 3-A-3, Class 3-A-4, Class 3-A-5, Class
3-A-6, Class 3-A-7, Class 3-A-8, Class 3-A-9, Class 3-A-10, Class 3-A-11, Class
3-A-12, Class 3-A-13, Class 3-A-14, Class 3-A-15, Class 3-A-16, Class 3-A-17,
Class 3-A-18, Class 3-A-19, Class 3-A-20, Class 3-A-21, Class 3-A-22, Class
3-A-23, Class 3-A-24, Class 3-A-25, Class 3-A-26, Class 3-A-27, Class 3-A-28,
Class 3-A-29, Class 3-A-30, Class 3-A-31, Class 3-A-32, Class 3-A-33, Class
3-A-34, Class 3-A-35, Class 3-A-R, Class 3-IO, Class 3-PO, Class 4-A-1, Class M,
Class B-1, Class B-2, Class B-3, Class B-4, Class B-5 and Class B-6, as the case
may be.

            Class 2-A-1 Loss Amount: With respect to any Distribution Date after
the Senior Credit Support Depletion Date, the amount, if any, by which the Class
Certificate Balance of the Class 2-A-1 Certificates would be reduced as a result
of the allocation of any reduction pursuant to Section 5.03(b) to such Class,
without regard to the operation of Section 5.03(e).

            Class 2-A-2 Loss Allocation Amount: With respect to any Distribution
Date after the Senior Credit Support Depletion Date, the lesser of (a) the Class
Certificate Balance of the Class 2-A-2 Certificates with respect to such
Distribution Date prior to any reduction for the Class 2-A-2 Loss Allocation
Amount and (b) the Class 2-A-1 Loss Amount with respect to such Distribution
Date.

            Class 3-A-1 Loss Amount: With respect to any Distribution Date after
the Senior Credit Support Depletion Date, the amount, if any, by which the Class
Certificate Balance of the Class 3-A-1 Certificates would be reduced as a result
of the allocation of any reduction pursuant to Section 5.03(b) to such Class,
without regard to the operation of Section 5.03(e).

            Class 3-A-2 Loss Allocation Amount: With respect to any Distribution
Date after the Senior Credit Support Depletion Date, the lesser of (a) the Class
Certificate Balance of the Class 3-A-2 Certificates with respect to such
Distribution Date prior to any reduction for the Class 3-A-2 Loss Allocation
Amount and (b) the Class 3-A-1 Loss Amount with respect to such Distribution
Date.

            Class 3-A-3 Notional Amount: As to any Distribution Date and the
Class 3-A-3 Certificates, 4.1666666667% of the sum of the Class Certificate
Balances of the Class 3-A-1 and Class 3-A-2 Certificates.

            Class 3-A-4 Loss Amount: With respect to any Distribution Date after
the Senior Credit Support Depletion Date, the amount, if any, by which the Class
Certificate Balance of the Class 3-A-4 Certificates would be reduced as a result
of the allocation of any reduction pursuant to Section 5.03(b) to such Class,
without regard to the operation of Section 5.03(e).

            Class 3-A-5 Notional Amount: As to any Distribution Date and the
Class 3-A-5 Certificates, 8.3333323797% of the Class Certificate Balance of the
Class 3-A-4 Certificates.

            Class 3-A-6 Loss Amount: With respect to any Distribution Date after
the Senior Credit Support Depletion Date, the amount, if any, by which the Class
Certificate Balance of the Class 3-A-6 Certificates would be reduced as a result
of the allocation of any reduction pursuant to Section 5.03(b) to such Class,
without regard to the operation of Section 5.03(e).

            Class 3-A-7 Notional Amount: As to any Distribution Date and the
Class 3-A-7 Certificates, 8.3333299605% of the Class Certificate Balance of the
Class 3-A-6 Certificates.

            Class 3-A-8 Loss Amount: With respect to any Distribution Date after
the Senior Credit Support Depletion Date, the amount, if any, by which the Class
Certificate Balance of the Class 3-A-8 Certificates would be reduced as a result
of the allocation of any reduction pursuant to Section 5.03(b) to such Class,
without regard to the operation of Section 5.03(e).

            Class 3-A-9 Notional Amount: As to any Distribution Date and the
Class 3-A-9 Certificates, 8.3333277995% of the Class Certificate Balance of the
Class 3-A-8 Certificates.

            Class 3-A-10 Loss Allocation Amount: With respect to any
Distribution Date after the Senior Credit Support Depletion Date, the lesser of
(a) the Class Certificate Balance of the Class 3-A-10 Certificates with respect
to such Distribution Date prior to any reduction for the Class 3-A-10 Loss
Allocation Amount and (b) the sum of the Class 3-A-4 Loss Amount, Class 3-A-6
Loss Amount, Class 3-A-8 Loss Amount and Class 3-A-16 Loss Amount with respect
to such Distribution Date.

            Class 3-A-11 Loss Amount: With respect to any Distribution Date
after the Senior Credit Support Depletion Date, the amount, if any, by which the
Class Certificate Balance of the Class 3-A-11 Certificates would be reduced as a
result of the allocation of any reduction pursuant to Section 5.03(b) to such
Class, without regard to the operation of Section 5.03(e).

            Class 3-A-11 Reserve Fund: The trust account created and maintained
by the Trustee pursuant to Section 3.08(g) which shall be entitled the "Class
3-A-11 Reserve Fund, Wells Fargo Bank, N.A., as Trustee, in trust for registered
Holders of the Class 3-A-11 Certificates of the Banc of America Alternative Loan
Trust 2007-1, Mortgage Pass-Through Certificates, Series 2007-1" and which must
be an Eligible Account. Amounts on deposit in the Class 3-A-11 Reserve Fund
shall not be invested. The Class 3-A-11 Reserve Fund shall not be an asset of
any REMIC formed under this Agreement.

            Class 3-A-11 Yield Maintenance Agreement: The yield maintenance
agreement between the Trustee, on behalf of the Trust, and the Counterparty,
which will be for the benefit of the Class 3-A-11 Certificates, substantially in
the form attached hereto as Exhibit S-1. The Class 3-A-11 Yield Maintenance
Agreement shall not be an asset of any REMIC formed under this Agreement.

            Class 3-A-11 Yield Maintenance Agreement Payment: For any
Distribution Date prior to and including the Distribution Date in July 2010, the
amount, if any, required to be paid by the Counterparty to the Trustee under the
Class 3-A-11 Yield Maintenance Agreement.

            Class 3-A-12 Notional Amount: As to any Distribution Date and the
Class 3-A-12 Certificates, the Class Certificate Balance of the Class 3-A-11
Certificates.

            Class 3-A-13 Loss Allocation Amount: With respect to any
Distribution Date after the Senior Credit Support Depletion Date, the lesser of
(a) the Class Certificate Balance of the Class 3-A-13 Certificates with respect
to such Distribution Date prior to any reduction for the Class 3-A-13 Loss
Allocation Amount and (b) the Class 3-A-11 Loss Amount with respect to such
Distribution Date.

            Class 3-A-14 Accrual Distribution Amount: For any Distribution Date
and the Class 3-A-14 Certificates prior to the applicable Accretion Termination
Date, an amount with respect to such Class equal to the sum of (i) the amount
allocated but not currently distributable as interest to such Class pursuant to
Section 5.02(a)(i) that is attributable to clause (i) of the definition of
"Interest Distribution Amount," and (ii) the amount allocated but not currently
distributable as interest to such Class pursuant to Section 5.02(a)(i) that is
attributable to clause (ii) of the definition of "Interest Distribution Amount."

            Class 3-A-15 Accrual Distribution Amount: For any Distribution Date
and the Class 3-A-15 Certificates prior to the applicable Accretion Termination
Date, an amount with respect to such Class equal to the sum of (i) the amount
allocated but not currently distributable as interest to such Class pursuant to
Section 5.02(a)(i) that is attributable to clause (i) of the definition of
"Interest Distribution Amount," and (ii) the amount allocated but not currently
distributable as interest to such Class pursuant to Section 5.02(a)(i) that is
attributable to clause (ii) of the definition of "Interest Distribution Amount."

            Class 3-A-16 Loss Amount: With respect to any Distribution Date
after the Senior Credit Support Depletion Date, the amount, if any, by which the
Class Certificate Balance of the Class 3-A-16 Certificates would be reduced as a
result of the allocation of any reduction pursuant to Section 5.03(b) to such
Class, without regard to the operation of Section 5.03(e).

            Class 3-A-16 Reserve Fund: The trust account created and maintained
by the Trustee pursuant to Section 3.08(g) which shall be entitled the "Class
3-A-16 Reserve Fund, Wells Fargo Bank, N.A., as Trustee, in trust for registered
Holders of the Class 3-A-16 Certificates of the Banc of America Alternative Loan
Trust 2007-1, Mortgage Pass-Through Certificates, Series 2007-1" and which must
be an Eligible Account. Amounts on deposit in the Class 3-A-16 Reserve Fund
shall not be invested. The Class 3-A-16 Reserve Fund shall not be an asset of
any REMIC formed under this Agreement.

            Class 3-A-16 Yield Maintenance Agreement: The yield maintenance
agreement between the Trustee, on behalf of the Trust, and the Counterparty,
which will be for the benefit of the Class 3-A-16 Certificates, substantially in
the form attached hereto as Exhibit S-1. The Class 3-A-16 Yield Maintenance
Agreement shall not be an asset of any REMIC formed under this Agreement.

            Class 3-A-16 Yield Maintenance Agreement Payment: For any
Distribution Date prior to and including the Distribution Date in July 2010, the
amount, if any, required to be paid by the Counterparty to the Trustee under the
Class 3-A-16 Yield Maintenance Agreement.

            Class 3-A-17 Notional Amount: As to any Distribution Date and the
Class 3-A-17 Certificates, the Class Certificate Balance of the Class 3-A-16
Certificates.

            Class 3-IO Notional Amount: As to any Distribution Date and the
Class 3-IO Certificates, the product of (i) 86.4254982888% of the aggregate
Stated Principal Balance of the Group 3 Premium Mortgage Loans on the Due Date
in the month preceding the month of such Distribution Date and (ii) a fraction,
(a) the numerator of which is equal to the weighted average of the Net Mortgage
Interest Rates of the Group 3 Premium Mortgage Loans (based on the Stated
Principal Balances of the Group 3 Premium Mortgage Loans as of the Due Date in
the month preceding the month of such Distribution Date) minus 6.000% and (b)
the denominator of which is equal to 6.000%.

            Class Certificate Balance: With respect to any Class (other than the
Exchangeable Certificates and the Interest Only Certificates) and any date of
determination, and subject to Section 5.03(f), the Initial Class Certificate
Balance of such Class (plus, in the case of the Class 3-A-14 and Class 3-A-15
Certificates, any Class 3-A-14 Accrual Distribution Amounts or Class 3-A-15
Accrual Distribution Amounts, as applicable, previously added thereto) or, in
the case of a Class of Exchangeable REMIC Certificates, the Maximum Initial
Class Certificate Balance, minus (A) the sum of (i) all distributions of
principal allocated thereto (including in the case of any Class of Subordinate
Certificates any principal otherwise payable to such Class of Subordinate
Certificates used to pay any PO Deferred Amounts), (ii) all reductions in Class
Certificate Balance previously allocated thereto pursuant to Section 5.03(b) and
(iii) any reduction allocated to a Class pursuant to Section 5.03(e) plus (B)
the sum of (i) all increases in Class Certificate Balance previously allocated
thereto pursuant to Section 5.03(b) and (ii) any increases allocated to a Class
pursuant to Section 5.03(e). The Class 3-A-3, Class 3-A-5, Class 3-A-7, Class
3-A-9, Class 3-A-12, Class 3-A-17, Class 3-A-35 and Class 3-IO Certificates are
Interest Only Certificates and have no Class Certificate Balance. A Class of
Exchangeable Certificates has no Class Certificate Balance.

            Class Interest Shortfall: For any Distribution Date and each
interest-bearing Class (other than the Exchangeable Certificates), the amount by
which Accrued Certificate Interest for such Class (as reduced pursuant to
Section 5.02(c)) exceeds the amount of interest actually distributable on such
Class (or, in the case of the Class 3-A-14 and Class 3-A-15 Certificates prior
to the applicable Accretion Termination Date, the amount included in the Class
3-A-14 Accrual Distribution Amount or Class 3-A-15 Accrual Distribution Amount,
as applicable, pursuant to clause (i) of the definition thereof, but not
distributed as interest on the Class 3-A-14 and Class 3-A-15 Certificates) on
such Distribution Date pursuant to clause (i) of the definition of "Interest
Distribution Amount."

            Class Unpaid Interest Shortfall: As to any Distribution Date and
each interest-bearing Class (other than the Exchangeable Certificates), the
amount by which the aggregate Class Interest Shortfalls for such Class (or, in
the case of the Class 3-A-14 and Class 3-A-15 Certificates prior to the
applicable Accretion Termination Date, the amount included in the Class 3-A-14
Accrual Distribution Amount or Class 3-A-15 Accrual Distribution Amount, as
applicable, pursuant to clause (ii) of the definition thereof, but not
distributed as interest on the Class 3-A-14 and Class 3-A-15 Certificates) on
prior Distribution Dates exceeds the amount of interest actually distributable
on such Class on such prior Distribution Dates pursuant to clause (ii) of the
definition of "Interest Distribution Amount."

            Closing Date: March 29, 2007.

            Code: The Internal Revenue Code of 1986, as amended.

            Collection Amount: As to any Distribution Date and Loan Group, the
excess of (a) the sum of (i) the aggregate of (A) the interest portion of any
Monthly Payment on a Mortgage Loan in such Loan Group (net of the Servicing Fee)
and the principal portion of any Monthly Payment on a Mortgage Loan in such Loan
Group due on the Due Date in the month in which such Distribution Date occurs
and which is received prior to the related Determination Date (or in the case of
any Monthly Covered Amount, the related Remittance Date) and (B) all Periodic
Advances and payments of Compensating Interest made by the Servicer in respect
of such Loan Group and Distribution Date deposited to the Servicer Custodial
Account pursuant to Section 3.08(b)(vii); (ii) all Liquidation Proceeds received
on the Mortgage Loans in such Loan Group during the preceding calendar month and
deposited to the Servicer Custodial Account pursuant to Section 3.08(b)(iii);
(iii) all Principal Prepayments (other than Total Covered Amounts) received on
the Mortgage Loans in such Loan Group during the month preceding the month of
such Distribution Date and deposited to the Servicer Custodial Account pursuant
to Section 3.08(b)(i) during such period and all Total Covered Amounts received
and deposited in the Servicer Custodial Account by the related Remittance Date;
(iv) in connection with Defective Mortgage Loans in such Loan Group, as
applicable, the aggregate of the Repurchase Prices and Substitution Adjustment
Amounts deposited on the related Remittance Date pursuant to Section
3.08(b)(vi); (v) any other amounts in the Servicer Custodial Account deposited
therein pursuant to Sections 3.08(b)(iv) and (v) in respect of such Distribution
Date and such Loan Group; (vi) any Reimbursement Amount required to be included
pursuant to Section 5.02(a); and (vii) any Non-PO Recovery with respect to such
Distribution Date over (b) any (i) amounts permitted to be withdrawn from the
Servicer Custodial Account pursuant to clauses (i) through (vii), inclusive, of
Section 3.11(a) in respect of such Loan Group and (ii) amounts permitted to be
withdrawn from the Certificate Account pursuant to clause (ii) of Section
3.11(b) in respect of such Loan Group.

            Combination Group: Each Exchangeable Combination and Exchangeable
REMIC Combination having the .same numerical designation as set forth on Exhibit
U.

            Compensating Interest: With respect to any Distribution Date, the
least of (a) the aggregate Servicing Fee for such Distribution Date (before
giving effect to any reduction pursuant to Section 3.17), (b) the Prepayment
Interest Shortfall for such Distribution Date and (c) one-twelfth of 0.25% of
the Pool Stated Principal Balances of Loan Group 1, Loan Group 2, Assumed Loan
Group 3 and Assumed Loan Group 4. To the extent that the aggregate Prepayment
Interest Shortfall for a Distribution Date exceeds Compensating Interest, the
Compensating Interest for such Distribution Date shall be allocated between the
Loan Groups in proportion to the respective Prepayment Interest Shortfalls
relating to such Loan Groups.

            Co-op Shares: Shares issued by private non-profit housing
corporations.

            Corporate Trust Office: The principal corporate trust office of the
Trustee at which at any particular time its corporate trust business with
respect to this Agreement is conducted, which office at the date of the
execution of this instrument is located at 9062 Old Annapolis Road, Columbia,
Maryland 21045-1951, Attention: Corporate Trust Services - BOALT 2007-1, and for
certificate transfer purposes is located at Sixth Street and Marquette Avenue,
Minneapolis, Minnesota 55479, Attention: Corporate Trust Services - BOALT
2007-1, or at such other address as the Trustee may designate from time to time
by notice to the Certificateholders, the Depositor and the Servicer.

            Corresponding Upper-Tier Class or Classes: As to the following
Uncertificated Middle-Tier Interests, the Corresponding Upper-Tier Class or
Classes, as follows:


  Uncertificated                               Corresponding Upper-Tier
Middle-Tier Interest                             Class or Classes
--------------------------------- ----------------------------------------------
Class 1-A-M1 Interest              Class 1-A-1 Certificates

Class 2-A-M1 Interest              Class 2-A-1 and Class 2-A-2 Certificates

Class 3-A-M1 Interest              Class 3-A-1, Class 3-A-2 and Class 3-A-3
                                  Certificates

Class 3-A-M4 Interest              Class 3-A-4 and Class 3-A-5 Certificates

Class 3-A-M6 Interest              Class 3-A-6 and Class 3-A-7 Certificates

Class 3-A-M8 Interest              Class 3-A-8 and Class 3-A-9 Certificates

Class 3-A-M10 Interest             Class 3-A-10, Class 3-A-13, Class 3-A-14 and
                                   Class 3-A-15 Certificates

Class 3-A-M11 Interest             Class 3-A-11 and Class 3-A-12 Certificates

Class 3-A-M16 Interest             Class 3-A-16 and Class 3-A-17 Certificates

Class 3-A-MUR Interest             Class 3-A-R Certificate

Class 3-MIO Interest               Class 3-IO Certificates

Class 3-MPO Interest               Class 3-PO Certificates

Class 4-A-M1 Interest              Class 4-A-1 Certificates

Class M-M1 Interest                Class M, Class B-1,   Class B-2,   Class B-3,
                                  Class B-4, Class B-5 and Class B-6
                                  Certificates

            Custodian: Initially, the Trustee, and thereafter the Custodian, if
any, hereafter appointed by the Trustee pursuant to Section 9.12. The Custodian
may (but need not) be the Trustee or any Person directly or indirectly
controlling or controlled by or under common control of either of them. Neither
the Servicer nor the Depositor, nor any Person directly or indirectly
controlling or controlled by or under common control with any such Person may be
appointed Custodian.

            Customary Servicing Procedures: With respect to the Servicer,
procedures (including collection procedures) that the Servicer customarily
employs and exercises in servicing and administering mortgage loans for its own
account and which are in accordance with accepted mortgage servicing practices
of prudent lending institutions servicing mortgage loans of the same type as the
Mortgage Loans in the jurisdictions in which the related Mortgaged Properties
are located.

            Cut-off Date: March 1, 2007.

            Cut-off Date Pool Principal Balance: For each Loan Group, the
aggregate of the Cut-off Date Principal Balances of the Mortgage Loans in such
Loan Group, which is $41,227,152.83 for Loan Group 1, $87,922,385.32 for Loan
Group 2 and $227,064,377.32 for Loan Group 3.

            Cut-off Date Principal Balance: As to any Mortgage Loan, the unpaid
principal balance thereof as of the close of business on the Cut-off Date,
reduced by all installments of principal due on or prior thereto whether or not
paid.

            Debt Service Reduction: As to any Mortgage Loan and any
Determination Date, the excess of (i) the Monthly Payment due on the related Due
Date under the terms of such Mortgage Loan over (ii) the amount of the monthly
payment of principal and/or interest required to be paid with respect to such
Due Date by the Mortgagor as established by a court of competent jurisdiction
(pursuant to an order which has become final and nonappealable) as a result of a
proceeding initiated by or against the related Mortgagor under the Bankruptcy
Code, as amended from time to time (11 U.S.C.); provided that no such excess
shall be considered a Debt Service Reduction so long as (a) the Servicer is
pursuing an appeal of the court order giving rise to any such modification and
(b)(1) such Mortgage Loan is not in default with respect to payment due
thereunder in accordance with the terms of such Mortgage Loan as in effect on
the Cut-off Date or (2) Monthly Payments are being advanced by the Servicer in
accordance with the terms of such Mortgage Loan as in effect on the Cut-off
Date.

            Debt Service Reduction Mortgage Loan: Any Mortgage Loan that became
the subject of a Debt Service Reduction.

            Defective Mortgage Loan: Any Mortgage Loan which is required to be
cured, repurchased or substituted for pursuant to Section 2.02 or 2.04.

            Deficient Valuation: As to any Mortgage Loan and any Determination
Date, the excess of (i) the then outstanding indebtedness under such Mortgage
Loan over (ii) the secured valuation thereof established by a court of competent
jurisdiction (pursuant to an order which has become final and nonappealable) as
a result of a proceeding initiated by or against the related Mortgagor under the
Bankruptcy Code, as amended from time to time (11 U.S.C.), pursuant to which
such Mortgagor retained such Mortgaged Property; provided that no such excess
shall be considered a Deficient Valuation so long as (a) the Servicer is
pursuing an appeal of the court order giving rise to any such modification and
(b)(1) such Mortgage Loan is not in default with respect to payments due
thereunder in accordance with the terms of such Mortgage Loan as in effect on
the Cut-off Date or (2) Monthly Payments are being advanced by the Servicer in
accordance with the terms of such Mortgage Loan as in effect on the Cut-off
Date.

            Deficient Valuation Mortgage Loan: Any Mortgage Loan that became the
subject of a Deficient Valuation.

            Definitive Certificates: As defined in Section 6.02(c)(iii).

            Denomination: The amount, if any, specified on the face of each
Certificate (other than an Interest Only Certificate) representing the principal
portion of the Initial Class Certificate Balance (or Maximum Initial Class
Certificate Balance) evidenced by such Certificate. As to any Interest Only
Certificate of a Class, the amount specified on the face of such Certificate
representing the portion of the Initial Notional Amount (or Maximum Initial
Notional Amount) of such Class evidenced by such Certificate.

            Depositor: Banc of America Mortgage Securities, Inc., a Delaware
corporation, or its successor in interest, as depositor of the Trust Estate.

            Depository: The Depository Trust Company, the nominee of which is
Cede & Co., as the registered Holder of the Book-Entry Certificates or any
successor thereto appointed in accordance with this Agreement. The Depository
shall at all times be a "clearing corporation" as defined in Section 8-102(3) of
the Uniform Commercial Code of the State of New York.

            Depository Participant: A broker, dealer, bank or other financial
institution or other Person for whom from time to time a Depository effects
book-entry transfers and pledges of securities deposited with the Depository.

            Determination Date: As to any Distribution Date, the 16th day of the
month of the related Distribution Date or, if such 16th day is not a Business
Day, the Business Day immediately preceding such 16th day.

            Discount Mortgage Loan: Any Group 3 Discount Mortgage Loan.

            Distribution Date: The 25th day of each month beginning in April
2007 (or, if such day is not a Business Day, the next Business Day).

            Due Date: As to any Distribution Date and each Mortgage Loan, the
first day in the calendar month of such Distribution Date.

            Eligible Account: Any of (i) an account or accounts maintained with
(a) Bank of America, or (b) a federal or state chartered depository institution
or trust company the short-term unsecured debt obligations of which (or, in the
case of a depository institution or trust company that is the principal
subsidiary of a holding company, the debt obligations of such holding company)
have the highest short-term ratings of each Rating Agency at the time any
amounts are held on deposit therein, or (ii) an account or accounts in a
depository institution or trust company in which such accounts are insured by
the FDIC (to the limits established by the FDIC) and the uninsured deposits in
which accounts are otherwise secured such that, as evidenced by an Opinion of
Counsel delivered to the Trustee and to each Rating Agency, the
Certificateholders have a claim with respect to the funds in such account or a
perfected first priority security interest against any collateral (which shall
be limited to Permitted Investments) securing such funds that is superior to
claims of any other depositors or creditors of the depository institution or
trust company in which such account is maintained, or (iii) a trust account or
accounts maintained with the trust department of a federal or state chartered
depository institution or trust company, acting in its fiduciary capacity or
(iv) any other account acceptable to each Rating Agency. Eligible Accounts may
bear interest and may include, if otherwise qualified under this definition,
accounts maintained with the Trustee or Bank of America.

             ERISA: The Employee Retirement Income Security Act of 1974, as
amended.

            ERISA Restricted Certificates: Any Class 3-A-2, Class 3-A-10, Class
3-A-13, Class 3-A-20, Class 3-A-22, Class M, Class B-1, Class B-2, Class B-3,
Class B-4, Class B-5 or Class B-6 Certificate.

            Escrow Account: As defined in Section 3.09(a).

            Escrow Payments: The amounts constituting taxes, assessments,
Primary Insurance Policy premiums, fire and hazard insurance premiums and other
payments as may be required to be escrowed by the Mortgagor with the mortgagee
pursuant to the terms of any Mortgage Note or Mortgage.

            Events of Default: As defined in Section 8.01.

            Excess Proceeds: With respect to any Liquidated Mortgage Loan, the
amount, if any, by which the sum of any Liquidation Proceeds of such Mortgage
Loan received in the calendar month in which such Mortgage Loan became a
Liquidated Mortgage Loan, net of any amounts previously reimbursed to the
Servicer as Nonrecoverable Advance(s) with respect to such Mortgage Loan
pursuant to Section 3.11(a)(iii), exceeds (i) the unpaid principal balance of
such Liquidated Mortgage Loan as of the Due Date in the month in which such
Mortgage Loan became a Liquidated Mortgage Loan plus (ii) accrued interest at
the Mortgage Interest Rate from the Due Date as to which interest was last paid
or for which a Periodic Advance was made (and not reimbursed) up to the Due Date
applicable to the Distribution Date immediately following the calendar month
during which such liquidation occurred.

            Exchange Act: The Securities Exchange Act of 1934, as amended.

            Exchangeable Certificate Grantor Trust Account: The sub-account of
the Certificate Account designated by the Trustee pursuant to Section
5.10(b)(i).

            Exchangeable Certificates: The Class 3-A-18, Class 3-A-19, Class
3-A-20, Class 3-A-21, Class 3-A-22, Class 3-A-23, Class 3-A-24, Class 3-A-25,
Class 3-A-26, Class 3-A-27, Class 3-A-28, Class 3-A-29, Class 3-A-30, Class
3-A-31, Class 3-A-32, Class 3-A-33, Class 3-A-34 and Class 3-A-35.

            Exchangeable Classes: The Classes of Exchangeable Certificates.

            Exchangeable Combination: Any of the Exchangeable Combination 1,
Exchangeable Combination 2, Exchangeable Combination 3, Exchangeable Combination
4, Exchangeable Combination 5, Exchangeable Combination 6, Exchangeable
Combination 7, Exchangeable Combination 8, Exchangeable Combination 9,
Exchangeable Combination 10, Exchangeable Combination 11, Exchangeable
Combination 12, Exchangeable Combination 13, Exchangeable Combination 14,
Exchangeable Combination 15, Exchangeable Combination 16, Exchangeable
Combination 17 and Exchangeable Combination 18, as applicable.

            Exchangeable Combination 1: The Class 3-A-18 Certificates.

            Exchangeable Combination 2: The Class 3-A-19 Certificates.

            Exchangeable Combination 3: The Class 3-A-20 Certificates.

            Exchangeable Combination 4: The Class 3-A-21 Certificates.

             Exchangeable Combination 5: The Class 3-A-22 Certificates.

            Exchangeable Combination 6: The Class 3-A-23 Certificates.

            Exchangeable Combination 7: The Class 3-A-24 Certificates.

            Exchangeable Combination 8: The Class 3-A-25 Certificates.

            Exchangeable Combination 9: The Class 3-A-26 Certificates.

            Exchangeable Combination 10: The Class 3-A-27 Certificates.

            Exchangeable Combination 11: The Class 3-A-28 Certificates.

            Exchangeable Combination 12: The Class 3-A-29 Certificates.

            Exchangeable Combination 13: The Class 3-A-30 Certificates.

            Exchangeable Combination 14: The Class 3-A-31 Certificates.

            Exchangeable Combination 15: The Class 3-A-32 Certificates.

            Exchangeable Combination 16: The Class 3-A-33 Certificates.

            Exchangeable Combination 17: The Class 3-A-34 Certificates.

            Exchangeable Combination 18: The Class 3-A-35 Certificates.

            Exchangeable REMIC Certificates: The Class 3-A-1, Class 3-A-2, Class
3-A-3, Class 3-A-4, Class 3-A-5, Class 3-A-6, Class 3-A-7, Class 3-A-8, Class
3-A-9, Class 3-A-12, Class 3-A-13 and Class 3-A-17 Certificates.

            Exchangeable REMIC Classes: The Classes of Exchangeable REMIC
Certificates.

            Exchangeable REMIC Combination: Any of the Exchangeable REMIC
Combination 1, Exchangeable REMIC Combination 2, Exchangeable REMIC Combination
3, Exchangeable REMIC Combination 4, Exchangeable REMIC Combination 5,
Exchangeable REMIC Combination 6, Exchangeable REMIC Combination 7, Exchangeable
REMIC Combination 8, Exchangeable REMIC Combination 9, Exchangeable REMIC
Combination 10, Exchangeable REMIC Combination 11, Exchangeable REMIC
Combination 12, Exchangeable REMIC Combination 13, Exchangeable REMIC
Combination 14, Exchangeable REMIC Combination 15, Exchangeable REMIC
Combination 16, Exchangeable REMIC Combination 17 and Exchangeable REMIC
Combination 18, as applicable.

            Exchangeable REMIC Combination 1: The Class 3-A-1 and Class 3-A-2
Certificates.

            Exchangeable REMIC Combination 2: The Class 3-A-1 and Class 3-A-3
Certificates.

            Exchangeable REMIC Combination 3: The Class 3-A-2 and Class 3-A-3
Certificates.

             Exchangeable REMIC Combination 4: The Class 3-A-1, Class 3-A-2 and
Class 3-A-3 Certificates.

            Exchangeable REMIC Combination 5: The Class 3-A-2, Class 3-A-3 and
Class 3-A-13 Certificates.

            Exchangeable REMIC Combination 6: The Class 3-A-4 and Class 3-A-5
Certificates.

            Exchangeable REMIC Combination 7: The Class 3-A-4 and Class 3-A-5
Certificates.

            Exchangeable REMIC Combination 8: The Class 3-A-6 and Class 3-A-7
Certificates.

            Exchangeable REMIC Combination 9: The Class 3-A-6 and Class 3-A-7
Certificates.

            Exchangeable REMIC Combination 10: The Class 3-A-8 and Class 3-A-9
Certificates.

            Exchangeable REMIC Combination 11: The Class 3-A-8 and Class 3-A-9
Certificates..

             Exchangeable REMIC Combination 12: The Class 3-A-4 and Class 3-A-6
Certificates.

            Exchangeable REMIC Combination 13: The Class 3-A-4, Class 3-A-5,
Class 3-A-6 and Class 3-A-7 Certificates.

            Exchangeable REMIC Combination 14: The Class 3-A-4, Class 3-A-5,
Class 3-A-6 and Class 3-A-7 Certificates.

            Exchangeable REMIC Combination 15: The Class 3-A-4, Class 3-A-6 and
Class 3-A-8 Certificates.

            Exchangeable REMIC Combination 16: The Class 3-A-4, Class 3-A-5,
Class 3-A-6, Class 3-A-7, Class 3-A-8 and Class 3-A-9 Certificates.

            Exchangeable REMIC Combination 17: The Class 3-A-4, Class 3-A-5,
Class 3-A-6, Class 3-A-7, Class 3-A-8 and Class 3-A-9 Certificates.

            Exchangeable REMIC Combination 18: The Class 3-A-12 and Class 3-A-17
Certificates.

            FDIC: The Federal Deposit Insurance Corporation, or any successor
thereto.

            Final Distribution Date: The Distribution Date on which the final
distribution in respect of the Certificates will be made pursuant to Section
10.01.

            Financial Market Service: Bloomberg Financial Service and any other
financial information provider designated by the Depositor by written notice to
the Trustee.

            FIRREA: The Financial Institutions Reform, Recovery and Enforcement
Act of 1989, as amended.

            Fitch: Fitch Ratings, or any successor thereto.

            Form 8-K: As defined in Section 3.22(a).

            Form 8-K Information: As defined in Section 3.22(d).

            Form 10-D: As defined in Section 3.22(a).

            Form 10-K: As defined in Section 3.22(a).

            Fractional Interest: As defined in Section 5.02(d).

            Grantor Trust: That portion of the Trust exclusive of the REMICs
consisting of (i) the right of (a) the Class 3-A-11 Certificates to receive
amounts from the Class 3-A-11 Reserve Fund and (b) the Class 3-A-16 Certificates
to receive amounts from the Class 3-A-16 Reserve Fund, (ii) the Yield
Maintenance Agreements and the Reserve Funds and (iii) any interests in the
Exchangeable REMIC Certificates beneficially owned in the form of Exchangeable
Certificates and rights with respect thereto.

            Group: Any of Group 1, Group 2, Group 3 or Group 4

            Group 1: The Group 1 Senior Certificates.

            Group 1 Mortgage Loan: Each Mortgage Loan listed on the Mortgage
Loan Schedule as a Group 1 Mortgage Loan.

            Group 1 Senior Certificates: Class 1-A-1 Certificates.

            Group 1 Senior Principal Distribution Amount: With respect to any
Distribution Date, an amount equal to the Total Senior Principal Distribution
Amount for Loan Group 1 for such Distribution Date.

            Group 2: The Group 2 Senior Certificates.

            Group 2 Mortgage Loan: Each Mortgage Loan listed on the Mortgage
Loan Schedule as a Group 2 Mortgage Loan.

            Group 2 Senior Certificates: Class 2-A-1 and Class 2-A-2
Certificates.

            Group 2 Senior Principal Distribution Amount: With respect to any
Distribution Date, an amount equal to 86.4254982888% of the Total Senior
Principal Distribution Amount for Loan Group 2 for such Distribution Date.

            Group 3: The Group 3 Senior Certificates.

            Group 3 Discount Mortgage Loan: A Group 3 Mortgage Loan with a Net
Mortgage Interest Rate as of the Cut-off Date less than 6.000% per annum.

            Group 3 Mortgage Loan: Each Mortgage Loan listed on the Mortgage
Loan Schedule as a Group 3 Mortgage Loan.

            Group 3 Premium Mortgage Loan: A Group 3 Mortgage Loan with a Net
Mortgage Interest Rate as of the Cut-off Date equal to or greater than 6.000%
per annum.

            Group 3 Priority Amount: As to any Distribution Date, the lesser of
(i) the aggregate Class Certificate Balance of the Class 3-A-1, Class 3-A-2 and
Class 3-A-13 Certificates and (ii) the product of (a) the Non-PO Principal
Amount for Assumed Loan Group 3, (b) the Shift Percentage and (c) the Group 3
Priority Percentage.

            Group 3 Priority Percentage: As to any Distribution Date, (i) the
aggregate Class Certificate Balance of the Class 3-A-1, Class 3-A-2 and Class
3-A-13 Certificates divided by (ii) the Pool Stated Principal Balance (Non-PO
Portion) for Assumed Loan Group 3.

            Group 3 Senior Certificates: The Class 3-A-1, Class 3-A-2, Class
3-A-3, Class 3-A-4, Class 3-A-5, Class 3-A-6, Class 3-A-7, Class 3-A-8, Class
3-A-9, Class 3-A-10, Class 3-A-11, Class 3-A-12, Class 3-A-13, Class 3-A-14,
Class 3-A-15, Class 3-A-16, Class 3-A-17, Class 3-A-R, Class 3-IO and Class 3-PO
Certificates.

            Group 3 Senior Principal Distribution Amount: With respect to any
Distribution Date, an amount equal to the Total Senior Principal Distribution
Amount for Assumed Loan Group 3 for such Distribution Date.

            Group 4: The Group 4 Senior Certificates.

            Group 4 Senior Certificates: The Class 4-A-1 Certificates.

            Group 4 Senior Principal Distribution Amount: With respect to any
Distribution Date, an amount equal to the sum of (i) 13.5745017112% of the Total
Senior Principal Distribution Amount for Loan Group 2 for such Distribution Date
and (ii) the Total Senior Principal Distribution Amount for Assumed Loan Group 4
for such Distribution Date.

            Group Subordinate Amount: With respect to any Distribution Date and
(a) Loan Group 1 is the excess of the Pool Stated Principal Balance for Loan
Group 1 over the aggregate Class Certificate Balance of the Senior Non-PO
Certificates of such Group immediately prior to such date, (b) Loan Group 2 is
the excess of the Pool Stated Principal Balance for Loan Group 2 over the sum of
(1) the aggregate Class Certificate Balance of the Senior Non-PO Certificates of
Group 2 immediately prior to such date and (2) the Loan Group 2 Class 4-A-1
Portion immediately prior to such date, (c) Assumed Loan Group 3 is the excess
of the Pool Stated Principal Balance (Non-PO Portion) for Assumed Loan Group 3
over the aggregate Class Certificate Balance of the Senior Non-PO Certificates
of Group 3 immediately prior to such date and (d) Assumed Loan Group 4 is the
excess of the Pool Stated Principal Balance (Non-PO Portion) for Assumed Loan
Group 4 over the Loan Group 3 Class 4-A-1 Portion immediately prior to such
date.

            Holder: A Certificateholder.

            Independent: When used with respect to any specified Person means
such a Person who (i) is in fact independent of the Depositor and the Servicer,
(ii) does not have any direct financial interest or any material indirect
financial interest in the Depositor or the Servicer or in an affiliate of either
of them, and (iii) is not connected with the Depositor or the Servicer as an
officer, employee, promoter, underwriter, trustee, partner, director or person
performing similar functions.

             Initial Class Certificate Balance: As to each Class of Certificates
(other than the Exchangeable REMIC Certificates, the Exchangeable Certificates
and the Interest Only Certificates), the Class Certificate Balance set forth in
the Preliminary Statement. The Interest Only Certificates have no Initial Class
Certificate Balance.

            Initial Notional Amount: As to each Class of Interest Only
Certificates (other than the Exchangeable REMIC Certificates and Exchangeable
Certificates), the respective Notional Amounts set forth in the Preliminary
Statement.

            Insurance Policy: With respect to any Mortgage Loan included in the
Trust Estate, any related insurance policy, including all riders and
endorsements thereto in effect, including any replacement policy or policies for
any Insurance Policies.

            Insurance Proceeds: Proceeds paid by an insurer pursuant to any
Insurance Policy, in each case other than any amount included in such Insurance
Proceeds in respect of Insured Expenses.

            Insured Expenses: Expenses covered by an Insurance Policy or any
other insurance policy with respect to the Mortgage Loans.

            Interest Accrual Period: As to any Distribution Date and each
interest-bearing Class of Certificates (other than the Class 3-A-11, Class
3-A-12, Class 3-A-16, Class 3-A-17 and Class 3-A-35 Certificates) of such
Distribution Date to but not including the first day of the calendar month of
such Distribution Date. As to any Distribution Date and the Class 3-A-11, Class
3-A-12, Class 3-A-16, Class 3-A-17 and Class 3-A-35 Certificates, the period
from and including the 25th day of the calendar month preceding the calendar
month in which such Distribution Date occurs and ending on the 24th day of the
calendar month in which such Distribution Date occurs.

            Interest Distribution Amount: For any Distribution Date and each
interest-bearing Class (other than the Exchangeable Certificates), the sum of
(i) the Accrued Certificate Interest, subject to reduction pursuant to Section
5.02(c) and (ii) any Class Unpaid Interest Shortfall for such Class.

            Interest Only Certificates: Any Class of Certificates entitled to
distributions of interest, but no distributions of principal. The Class 3-A-3,
Class 3-A-5, Class 3-A-7, Class 3-A-9, Class 3-A-12, Class 3-A-17, Class 3-A-35
and Class 3-IO Certificates are the only Classes of Interest Only Certificates.

            LIBOR: As to any Distribution Date, the arithmetic mean of the
London Interbank offered rate quotations for one-month U.S. Dollar deposits, as
determined by the Trustee in accordance with Section 5.09.

            LIBOR Business Day: Any Business Day on which banks are open for
dealing in foreign currency and exchange in London, England and the City of New
York.

            LIBOR Certificates: Any of the Class 3-A-11, Class 3-A-12, Class
3-A-16, Class 3-A-17 and Class 3-A-35 Certificates.

            Liquidated Mortgage Loan: With respect to any Distribution Date, a
defaulted Mortgage Loan (including any REO Property) that was liquidated in the
calendar month preceding the month of such Distribution Date and as to which the
Servicer has certified (in accordance with this Agreement) that it has received
all proceeds it expects to receive in connection with the liquidation of such
Mortgage Loan including the final disposition of an REO Property.

            Liquidation Proceeds: Amounts, including Insurance Proceeds,
received in connection with the partial or complete liquidation of defaulted
Mortgage Loans, whether through trustee's sale, foreclosure sale or otherwise or
amounts received in connection with any condemnation or partial release of a
Mortgaged Property and any other proceeds received in connection with an REO
Property, less the sum of related unreimbursed Servicing Fees and Advances.

            Loan Group: Any of Loan Group 1, Loan Group 2 or Loan Group 3.

            Loan Group 1: The Group 1 Mortgage Loans.

            Loan Group 2 Class 4-A-1 Portion: For any Distribution Date equals
27.9130413454% of the initial Class Certificate Balance of the Class 4-A-1
Certificates, less (i) all distributions of principal made to the Class 4-A-1
Certificates from collections relating to Loan Group 2 and payments of principal
to the Class 4-A-1 Certificates under Section 5.02(b)(vi) from amounts relating
to a Group other than Group 2 and (ii) losses allocated to the Class 4-A-1
Certificates resulting from Realized Losses on the Mortgage Loans in Loan Group
2.

            Loan Group 2: The Group 2 Mortgage Loans.

            Loan Group 3: The Group 3 Mortgage Loans.

            Loan Group 3 Class 4-A-1 Portion: For any Distribution Date equals
72.0869586186% of the initial Class Certificate Balance of the Class 4-A-1
Certificates, less (i) all distributions of principal made to the Class 4-A-1
Certificates from collections relating to Loan Group 3 and payments of principal
to the Class 4-A-1 Certificates under Section 5.02(b)(vi) from amounts relating
to a Group other than Group 3 and (ii) losses allocated to the Class 4-A-1
Certificates resulting from Realized Losses on the Mortgage Loans in Loan Group
3.

            Loan-to-Value Ratio: With respect to any Mortgage Loan and any date
of determination, the fraction, expressed as a percentage, the numerator of
which is the outstanding principal balance of the related Mortgage Loan at the
date of determination and the denominator of which is the Appraised Value of the
related Mortgaged Property.

            Lower-Tier Distribution Amount: As defined in Section 5.02(a).

            Lower-Tier REMIC: As defined in the Preliminary Statement, the
assets of which consist of the Mortgage Loans, such amounts as shall from time
to time be held in the Certificate Account (other than amounts held in respect
of the Upper-Tier Certificate Sub-Account or the Exchangeable Certificates
Grantor Trust Account), the insurance policies, if any, relating to a Mortgage
Loan and property which secured a Mortgage Loan and which has been acquired by
foreclosure or deed in lieu of foreclosure.

            Maximum Initial Class Certificate Balance: As to each Class of
Exchangeable REMIC Certificates and Exchangeable Certificates (other than a
Class of Interest Only Certificates), the amount for such Class set forth in the
table in the Preliminary Statement under the heading "Initial Class Certificate
Balance or Notional Amount."

            Maximum Initial Class Notional Amount: As to each Class of
Exchangeable REMIC Certificates which is a Class of Interest Only Certificates,
the amount for such Class set forth in the table in the Preliminary Statement
under the heading "Initial Class Certificate Balance or Notional Amount."

            Maximum Class Certificate Balance: As of any Determination Date and
Class of Exchangeable Certificates (other than a Class of Interest Only
Certificates), the portion of the Initial Maximum Class Certificate Balance that
would be outstanding assuming all Related Exchangeable REMIC Certificates have
been exchanged.

            Maximum Notional Amount: As of any Determination Date and Class of
Exchangeable Certificates that are Interest Only Certificates, the portion of
the Initial Maximum Notional Amount that would be outstanding assuming all
Related Exchangeable REMIC Certificates have been exchanged.

            MERS: As defined in Section 2.01(b)(iii).

            Monthly Covered Amount: As defined in the Mortgage Loan Purchase
Agreement.

            Monthly Payment: The scheduled monthly payment on a Mortgage Loan
due on any Due Date allocable to principal and/or interest on such Mortgage Loan
which, unless otherwise specified herein, shall give effect to any related Debt
Service Reduction and any Deficient Valuation that affects the amount of the
monthly payment due on such Mortgage Loan or the Monthly Covered Amount
representing such scheduled monthly payment.

            Moody's: Moody's Investors Service, Inc., or any successor thereto.

            Mortgage: The mortgage, deed of trust or other instrument creating a
first lien on a Mortgaged Property securing a Mortgage Note or creating a first
lien on a leasehold interest.

            Mortgage File: The mortgage documents listed in Section 2.01
pertaining to a particular Mortgage Loan.

            Mortgage Interest Rate: As to any Mortgage Loan, the per annum rate
of interest at which interest accrues on the principal balance of such Mortgage
Loan in accordance with the terms of the related Mortgage Note.

            Mortgage Loan Purchase Agreement: The Mortgage Loan Purchase
Agreement, dated March 29, 2007, between Bank of America, as seller, and the
Depositor, as purchaser.

            Mortgage Loan Schedule: The list of Mortgage Loans (as from time to
time amended by the Servicer to reflect the addition of Substitute Mortgage
Loans and the deletion of Defective Mortgage Loans pursuant to the provisions of
this Agreement) transferred to the Trustee as part of the Trust Estate and from
time to time subject to this Agreement, setting forth the following information
with respect to each Mortgage Loan: (i) the Mortgage Loan identifying number;
(ii) a code indicating whether the Mortgaged Property is owner-occupied; (iii)
the property type for each Mortgaged Property; (iv) the original months to
maturity or the remaining months to maturity from the Cut-off Date; (v) the
Loan-to-Value Ratio at origination; (vi) the Mortgage Interest Rate as of the
Cut-off Date; (vii) the date on which the first Monthly Payment was due on the
Mortgage Loan, and, if such date is not the Due Date currently in effect, such
Due Date; (viii) the stated maturity date; (ix) the amount of the Monthly
Payment as of the Cut-off Date; (x) the paid-through date; (xi) the original
principal amount of the Mortgage Loan; (xii) the principal balance of the
Mortgage Loan as of the close of business on the Cut-off Date, after application
of payments of principal due on or before the Cut-off Date, whether or not
collected, and after deduction of any payments collected of scheduled principal
due after the Cut-off Date; (xiii) a code indicating the purpose of the Mortgage
Loan; (xiv) a code indicating the documentation style; (xv) the Appraised Value;
(xvi) the closing date of such Mortgage Loan and (xvii) the Loan Group of such
Mortgage Loan. With respect to the Mortgage Loans in the aggregate, the Mortgage
Loan Schedule shall set forth the following information, as of the Cut-off Date:
(i) the number of Mortgage Loans; (ii) the current aggregate outstanding
principal balance of the Mortgage Loans; (iii) the weighted average Mortgage
Interest Rate of the Mortgage Loans; and (iv) the weighted average months to
maturity of the Mortgage Loans.

            Mortgage Loans: Such of the mortgage loans transferred and assigned
to the Trustee pursuant to Section 2.01 as from time to time are held as a part
of the Trust Estate (including any Substitute Mortgage Loans and REO Property),
the Mortgage Loans originally so held being identified in the Mortgage Loan
Schedule. With respect to Assumed Loan Group 3, a Mortgage Loan refers to
86.4254982888% of each Group 3 Mortgage Loan. With respect to Assumed Loan Group
4, a Mortgage Loan refers to 13.5745017112% of each Group 3 Mortgage Loan.

            Mortgage Note: The originally executed note or other evidence of
indebtedness evidencing the indebtedness of a Mortgagor under a Mortgage Loan,
together with all riders thereto and amendments thereof.

            Mortgaged Property: The underlying property securing a Mortgage
Loan, which may include Co-op Shares or residential long-term leases.

            Mortgagor: The obligor on a Mortgage Note.

            Net Mortgage Interest Rate: As to any Mortgage Loan and Distribution
Date, such Mortgage Loan's Mortgage Interest Rate thereon on the first day of
the month preceding the month of the related Distribution Date reduced by (i)
the Servicing Fee Rate and (ii) the Trustee Fee Rate.

            Net WAC: As to any Loan Group and any Distribution Date, the
weighted average of the Net Mortgage Interest Rates of the Mortgage Loans in
such Loan Group (based on the Stated Principal Balances of the Mortgage Loans in
such Loan Group on the Due Date in the month preceding the month of such
Distribution Date).

            Non-PO Percentage: As to any Group 1 Mortgage Loan, any Group 2
Mortgage Loan and any Mortgage Loan in Assumed Loan Group 4, 100%. As to any
Mortgage Loan in Assumed Loan Group 3, an amount equal to the lesser of (a) the
Net Mortgage Interest Rate as of the Cut-off Date divided by 6.000% or (b) 100%.

            Non-PO Principal Amount: As to any Distribution Date and Loan Group
or Assumed Loan Group, in the case of Loan Group 3, will equal for each Mortgage
Loan in such Loan Group or, in the case of each Assumed Loan Group, each
Mortgage Loan in Loan Group 3, the sum of:

      (i) the sum of the applicable Non-PO Percentage of:

            (a) the applicable Allocation Percentage of the principal portion of
each Monthly Payment due on such Mortgage Loan on the related Due Date;

            (b) the applicable Allocation Percentage of the Stated Principal
Balance, as of the date of repurchase, of such Mortgage Loan that was
repurchased by the Depositor pursuant to this Agreement during the calendar
month preceding the month of such Distribution Date;

            (c) the applicable Allocation Percentage of any Substitution
Adjustment Amount in connection with a Defective Mortgage Loan received during
the calendar month preceding the month of such Distribution Date;

            (d) the applicable Allocation Percentage of any Liquidation Proceeds
allocable to recoveries of principal of such Mortgage Loan that is not yet a
Liquidated Mortgage Loan received during the calendar month preceding the month
of such Distribution Date;

            (e) the applicable Allocation Percentage for such Mortgage Loan that
became a Liquidated Mortgage Loan during the calendar month preceding the month
of such Distribution Date, the amount of Liquidation Proceeds (excluding Excess
Proceeds) allocable to principal received with respect to such Mortgage Loan
during the calendar month preceding the month of such Distribution Date; and

            (f) the applicable Allocation Percentage of all Principal
Prepayments on such Mortgage Loan received during the calendar month preceding
the month of such Distribution Date; and

      (ii) the Non-PO Recovery for such Distribution Date.

            Non-PO Recovery: As to any Distribution Date and Loan Group, the
amount of all Recoveries received with respect to such Loan Group or Assumed
Loan Group during the calendar month preceding the month of such Distribution
Date less the PO Recovery with respect to such Loan Group or Assumed Loan Group
for such Distribution Date.

            Non-Supported Interest Shortfalls: As to any Distribution Date, the
amount, if any, by which the aggregate of Prepayment Interest Shortfalls exceeds
Compensating Interest for such Distribution Date.

            Non-U.S. Person: A Person other than a U.S. Person.

            Nonrecoverable Advance: Any portion of an Advance previously made or
proposed to be made in respect of a Mortgage Loan which has not been previously
reimbursed and which, in the good faith judgment of the Servicer, will not or,
in the case of a proposed Advance, would not be ultimately recoverable from the
related Mortgagor, related Liquidation Proceeds, or other recoveries in respect
of the related Mortgage Loan.

            Notional Amount: With respect to: (i) the Class 3-IO Certificates
and any date of determination, the Class 3-IO Notional Amount, (ii) the Class
3-A-3 Certificates and any date of determination, the Class 3-A-3 Notional
Amount, (iii) the Class 3-A-5 Certificates and any date of determination, the
Class 3-A-5 Notional Amount, (iv) the Class 3-A-7 Certificates and any date of
determination, the Class 3-A-7 Notional Amount, (v) the Class 3-A-9 Certificates
and any date of determination, the Class 3-A-9 Notional Amount, (vi) the Class
3-A-12 Certificates and any date of determination, the Class 3-A-12 Notional
Amount and (vii) the Class 3-A-17 Certificates and any date of determination,
the Class 3-A-17 Notional Amount.

            OCC: The Office of the Comptroller of the Currency.

            Offered Certificates: The Senior, Class M, Class B-1, Class B-2 and
Class B-3 Certificates.

            Officer's Certificate: A certificate signed by the Chairman of the
Board, Vice Chairman of the Board, President or a Vice President and by the
Treasurer, the Secretary or one of the Assistant Treasurers or Assistant
Secretaries, or any other duly authorized officer of the Depositor or the
Servicer, as the case may be, and delivered to the Trustee.

            Opinion of Counsel: A written opinion of counsel acceptable to the
Trustee, who may be counsel for the Depositor or the Servicer, except that any
opinion of counsel relating to the qualification of the Trust Estate as three
separate REMICs or compliance with the REMIC Provisions must be an opinion of
Independent counsel.

            Original Fractional Interest: With respect to each of the following
Classes of Subordinate Certificates, the corresponding percentage described
below, as of the Closing Date:

                    Class M                          4.41%
                    Class B-1                        3.41%
                    Class B-2                         2.25%
                    Class B-3                        1.40%
                    Class B-4                        0.85%
                    Class B-5                        0.40%
                    Class B-6                        0.00%

            Original Subordinate Class Certificate Balance: $17,989,000.00.

            OTS: The Office of Thrift Supervision.

            Outstanding Certificate: Any Outstanding Exchangeable Certificate or
Outstanding Exchangeable REMIC Certificate.

            Outstanding Exchangeable Certificate: Any Exchangeable Certificate
issued hereunder; provided, however, that upon the exchange of any Exchangeable
Certificate pursuant to Section 6.04 hereof, the Exchangeable Certificate so
exchanged shall be deemed no longer to be an Outstanding Exchangeable
Certificate, and each Exchangeable REMIC Certificate issued in exchange therefor
shall be deemed to be an Outstanding Exchangeable REMIC Certificate.

            Outstanding Exchangeable REMIC Certificate: Any Exchangeable REMIC
Certificate issued hereunder; provided, however, that upon the exchange of any
Exchangeable REMIC Certificate pursuant to Section 6.04 hereof, the Exchangeable
REMIC Certificate so exchanged shall be deemed no longer to be an Outstanding
Exchangeable REMIC Certificate, and the Exchangeable Certificate issued in
exchange therefor shall be deemed to be an Outstanding Exchangeable Certificate.

            Outstanding Mortgage Loan: As to any Due Date, a Mortgage Loan which
was not the subject of a Principal Prepayment in Full prior to such Due Date,
which did not become a Liquidated Mortgage Loan prior to such Due Date and which
was not purchased from the Trust prior to such Due Date pursuant to Section 2.02
or 2.04.

            Ownership Interest: As to any Certificate, any ownership or security
interest in such Certificate, including any interest in such Certificate as the
Holder thereof and any other interest therein, whether direct or indirect, legal
or beneficial, as owner or as pledgee.

            PAC Certificates: The PAC Group and the Class 3-A-23, Class 3-A-24,
Class 3-A-25, Class 3-A-26, Class 3-A-27, Class 3-A-28, Class 3-A-29, Class
3-A-30, Class 3-A-31, Class 3-A-32, Class 3-A-33 and Class 3-A-34 Certificates.

             PAC Group: The Class 3-A-4, Class 3-A-6, Class 3-A-8 and Class
3-A-10 Certificates.

            PAC Principal Amount: As to any Distribution Date and the PAC Group,
the amount, if any, that would reduce the aggregate Class Certificate Balance of
the PAC Group to the applicable balance shown in the table set forth in Exhibit
T with respect to such Distribution Date.

            Pass-Through Rate: As to each Class of interest-bearing
Certificates, the per annum rate set forth or described in the Preliminary
Statement.

            Paying Agent: As defined in Section 9.13.

            Percentage Interest: As to any Certificate, the percentage obtained
by dividing the initial Certificate Balance of such Certificate or the initial
notional amount for a Class of Interest Only Certificates (or the portion of the
Maximum Initial Class Certificate Balance or Maximum Initial Notional Amount
represented by such Certificate in the case of an Exchangeable REMIC Certificate
or Exchangeable Certificate) by the Initial Class Certificate Balance or Initial
Notional Amount (or the Maximum Initial Class Certificate Balance or Maximum
Initial Notional Amount in the case of a Class of Exchangeable REMIC
Certificates or Exchangeable Certificates), as applicable, of the Class of which
such Certificate is a part. Notwithstanding the foregoing, for purposes of
making actual distributions of principal or interest, allocating losses or
allocating Voting Rights among the Outstanding Exchangeable REMIC Certificates
or Outstanding Exchangeable Certificates of a Class, the Percentage Interest
refers to each Outstanding Certificate's proportionate share of such actual
distributions, Realized Losses or Voting Interests based on the proportion that
such Certificate's Percentage Interest, as defined in the first sentence of this
definition bears to the aggregate Percentage Interest as defined in the first
sentence of this definition of all the Outstanding Exchangeable REMIC
Certificates or Outstanding Exchangeable Certificates of such Class.

            Periodic Advance: The payment required to be made by the Servicer
with respect to any Distribution Date pursuant to Section 3.20, the amount of
any such payment being equal to the aggregate of Monthly Payments (net of the
Servicing Fee) on the Mortgage Loans (including any REO Property) that were due
on the related Due Date and not received as of the close of business on the
related Determination Date, less the aggregate amount of any such delinquent
payments that the Servicer has determined would constitute a Nonrecoverable
Advance if advanced.

            Permitted Investments: One or more of the following:

                  (i) obligations of or guaranteed as to principal and interest
            by the United States, Freddie Mac, Fannie Mae or any agency or
            instrumentality of the United States when such obligations are
            backed by the full faith and credit of the United States; provided
            that such obligations of Freddie Mac or Fannie Mae shall be limited
             to senior debt obligations and mortgage participation certificates
            other than investments in mortgage-backed or mortgage participation
            securities with yields evidencing extreme sensitivity to the rate of
            principal payments on the underlying mortgages, which shall not
            constitute Permitted Investments hereunder;

                  (ii) repurchase agreements on obligations specified in clause
            (i) maturing not more than one month from the date of acquisition
            thereof with a corporation incorporated under the laws of the United
            States or any state thereof rated not lower than "P-1" by Moody's,
            "A-1" by S&P and "F-1" by Fitch;

                  (iii) federal funds, certificates of deposit, demand deposits,
            time deposits and bankers' acceptances (which shall each have an
            original maturity of not more than 90 days and, in the case of
            bankers' acceptances, shall in no event have an original maturity of
            more than 365 days or a remaining maturity of more than 30 days)
            denominated in United States dollars of any U.S. depository
            institution or trust company incorporated under the laws of the
             United States or any state thereof, rated not lower than "P-1" by
            Moody's, "A-1" by S&P and "F-1" by Fitch;

                  (iv) commercial paper (having original maturities of not more
            than 365 days) of any corporation incorporated under the laws of the
            United States or any state thereof which is rated not lower than
            "P-1" by Moody's, "A-1" by S&P and "F-1" by Fitch;

                  (v) investments in money market funds (including funds of the
             Trustee or its affiliates, or funds for which an affiliate of the
            Trustee acts as advisor, as well as funds for which the Trustee and
            its affiliates may receive compensation) rated "Aaa" by Moody's,
            either "AAAm" or "AAAm G" by S&P and "AAA" by Fitch (if rated by
            Fitch) or otherwise approved in writing by each Rating Agency; and

                  (vi) other obligations or securities that are acceptable to
            each Rating Agency and, as evidenced by an Opinion of Counsel
            obtained by the Servicer, will not affect the qualification of the
            Trust Estate as three separate REMICs;

provided, however, that no instrument shall be a Permitted Investment if it
represents either (a) the right to receive only interest payments with respect
to the underlying debt instrument or (b) the right to receive both principal and
interest payments derived from obligations underlying such instrument and the
principal and interest with respect to such instrument provide a yield to
maturity greater than 120% of the yield to maturity at par of such underlying
obligations.

            Permitted Transferee: Any Person other than (i) the United States,
or any State or any political subdivision thereof, or any agency or
instrumentality of any of the foregoing, (ii) a foreign government,
international organization or any agency or instrumentality of either of the
foregoing, (iii) an organization which is exempt from tax imposed by Chapter 1
of the Code (including the tax imposed by Section 511 of the Code on unrelated
business taxable income) (except certain farmers' cooperatives described in Code
Section 521), (iv) rural electric and telephone cooperatives described in Code
Section 1381(a)(2)(C), (v) a Person with respect to whom the income on the
Residual Certificate is allocable to a foreign permanent establishment or fixed
base, within the meaning of an applicable income tax treaty, of such Person or
any other Person, and (vi) any other Person so designated by the Servicer based
on an Opinion of Counsel to the effect that any transfer to such Person may
cause the Trust or any other Holder of the Residual Certificate to incur tax
liability that would not be imposed other than on account of such transfer. The
terms "United States," "State" and "international organization" shall have the
meanings set forth in Code Section 7701 or successor provisions.

            Person: Any individual, corporation, limited liability company,
partnership, joint venture, association, joint-stock company, trust,
unincorporated organization or government or any agency or political subdivision
thereof.

            Physical Certificates: The Class 3-A-R, Class B-4, Class B-5 and
Class B-6 Certificates.

            Plan: As defined in Section 6.02(e).

            PO Deferred Amount: As to any Distribution Date and the Class 3-PO
Certificates, the sum of the amounts by which the Class Certificate Balance of
the Class 3-PO Certificates will be reduced on such Distribution Date or has
been reduced on prior Distribution Dates as a result of Section 5.03(b) less the
sum of (a) the PO Recoveries with respect to Assumed Loan Group 3 for prior
Distribution Dates and (b) the amounts distributed to the Class 3-PO
Certificates pursuant to Section 5.02(a)(iii) on prior Distribution Dates.

            PO Percentage: As to any Group 1 Mortgage Loan, any Group 2 Mortgage
Loan and any Mortgage Loan in Assumed Loan Group 4, 0%. As to Assumed Loan Group
3 and any Discount Mortgage Loan, 100% minus the Non-PO Percentage for such
Mortgage Loan.

            PO Principal Amount: As to any Distribution Date and Assumed Loan
Group 3, the sum of the applicable PO Percentage of

            (a) the applicable Allocation Percentage of the principal portion of
each Monthly Payment due on each Mortgage Loan in Assumed Loan Group 3 on the
related Due Date;

            (b) the applicable Allocation Percentage of the Stated Principal
Balance, as of the date of repurchase, of each Mortgage Loan in Assumed Loan
Group 3 that was repurchased by the Depositor pursuant to this Agreement during
the calendar month preceding the month of such Distribution Date;

            (c) the applicable Allocation Percentage of any Substitution
Adjustment Amount in connection with any Defective Mortgage Loan in Assumed Loan
Group 3 received during the calendar month preceding the month of such
Distribution Date;

            (d) the applicable Allocation Percentage of any Liquidation Proceeds
allocable to recoveries of principal of Mortgage Loans in Assumed Loan Group 3
that are not yet Liquidated Mortgage Loans received during the calendar month
preceding the month of such Distribution Date;

            (e) with respect to each Mortgage Loan in Assumed Loan Group 3 that
became a Liquidated Mortgage Loan during the calendar month preceding the month
of such Distribution Date, the applicable Allocation Percentage of the amount of
Liquidation Proceeds (excluding Excess Proceeds) allocable to principal received
with respect to such Mortgage Loan during the calendar month preceding the month
of such Distribution Date with respect to such Mortgage Loan; and

            (f) the applicable Allocation Percentage of all Principal
Prepayments received on the Mortgage Loans in Assumed Loan Group 3 during the
calendar month preceding the month of such Distribution Date.

            PO Recovery: As to any Distribution Date and Assumed Loan Group 3,
the lesser of (a) the PO Deferred Amount for the Class 3-PO Certificates for
such Distribution Date and (b) an amount equal to the sum as to each Mortgage
Loan in Assumed Loan Group 3 as to which there has been a Recovery received
during the calendar month preceding the month of such Distribution Date, of the
product of (x) the PO Percentage with respect to such Mortgage Loan and (y) the
amount of the Recovery with respect to such Mortgage Loan. As to any
Distribution Date and Loan Group 1, Loan Group 2 and Assumed Loan Group 4, the
PO Recovery is zero.

            Pool Distribution Amount: With respect to each Distribution Date and
(a) Group 1 is 100% of the Collection Amount for Loan Group 1, (b) Group 2 is
86.4254982888% of the Collection Amount for Loan Group 2, (c) Group 3 is
86.4254982888% of the Collection Amount for Loan Group 3 and (d) Group 4 is the
sum of 13.5745017112% of the Collection Amount for Loan Group 2 and
13.5745017112% of the Collection Amount for Loan Group 3.

            Pool Stated Principal Balance: As to any Distribution Date and Loan
Group 1 or Loan Group 2, the aggregate Stated Principal Balance of all Mortgage
Loans in such Loan Group as of the Due Date in the month preceding the month in
which such Distribution Date occurs. As to any Distribution Date and Assumed
Loan Group 3 or Assumed Loan Group 4, the applicable Allocation Percentage of
the sum of aggregate Stated Principal Balance of all Mortgage Loans in Loan
Group 3 as of the Due Date in the month preceding the month in which such
Distribution Date occurs.

            Pool Stated Principal Balance (Non-PO Portion): As to any
Distribution Date and Loan Group 1 or Loan Group 2, the sum for each Mortgage
Loan in such Loan Group of the product of (a) the Non-PO Percentage of such
Mortgage Loan and (b) the Stated Principal Balance of such Mortgage Loan as of
the Due Date in the month preceding the month in which such Distribution Date
occurs. As to any Distribution Date and Assumed Loan Group 3 or Assumed Loan
Group 4, the sum of the product of for each Mortgage Loan in Loan Group 3, the
applicable Non-PO Percentage of the product of the Allocation Percentage and the
Stated Principal Balance of such Mortgage Loan as of the Due Date in the month
preceding the month in which such Distribution Date occurs.

            Posted Collateral Account: The separate account created and
maintained by the Trustee pursuant to Section 3.08(j) in the name of the Trustee
for the benefit of the related Certificateholders and designated "Posted
Collateral Account, Wells Fargo Bank, N.A., as Trustee, in trust for registered
Holders of the Class 3-A-11 and Class 3-A-16 Certificates of the Banc of America
Alternative Loan Trust 2007-1, Mortgage Pass-Through Certificates, Series
2007-1." Funds in the Posted Collateral Account shall be held in trust for the
applicable Certificateholders for the uses and purposes set forth in this
Agreement and under the Yield Maintenance Agreements.

            Premium Mortgage Loan: Any Group 3 Premium Mortgage Loan.

            Prepayment Interest Shortfall: As to any Distribution Date and each
Mortgage Loan subject to a Principal Prepayment received during the calendar
month preceding such Distribution Date, the amount, if any, by which one month's
interest at the related Mortgage Interest Rate (net of the Servicing Fee) on
such Principal Prepayment exceeds the amount of interest paid in connection with
such Principal Prepayment.

            Primary Insurance Policy: Each policy of primary mortgage guaranty
insurance or any replacement policy therefor with respect to any Mortgage Loan,
in each case issued by an insurer acceptable to Fannie Mae or Freddie Mac.

            Prime Rate: The prime rate announced to be in effect from time to
time, as published as the average rate in The Wall Street Journal.

            Principal Only Certificates: Any Class of Certificates entitled to
distributions of principal, but to no distributions of interest. The Class 3-PO
Certificates are the only Class of Principal Only Certificates.

            Principal Prepayment: Any payment or other recovery of principal on
a Mortgage Loan (other than Liquidation Proceeds) which is received in advance
of its scheduled Due Date and is not accompanied by an amount of interest
representing scheduled interest due on any date or dates in any month or months
subsequent to the month of prepayment, including the principal portion of any
Total Covered Amount.

            Principal Prepayment in Full: Any Principal Prepayment of the entire
principal balance of a Mortgage Loan.

            Private Certificates: The Class B-4, Class B-5 and Class B-6
Certificates.

            Pro Rata Share: As to any Distribution Date and any Class of
Subordinate Certificates that is not a Restricted Class, the portion of the
Subordinate Principal Distribution Amounts allocable to such Class, equal to the
product of the Subordinate Principal Distribution Amounts for the Subordinate
Certificates, for such Distribution Date and a fraction, the numerator of which
is the related Class Certificate Balance thereof and the denominator of which is
the aggregate Class Certificate Balance of the Subordinate Certificates that are
not Restricted Classes. The Pro Rata Share of a Restricted Class shall be 0%.

            Qualified Appraiser: An appraiser of a Mortgaged Property duly
appointed by the originator of the related Mortgage Loan, who had no interest,
direct or indirect, in such Mortgaged Property or in any loan made on the
security thereof, whose compensation is not affected by the approval or
disapproval of the related Mortgage Loan and who met the minimum qualifications
of Fannie Mae or Freddie Mac.

            Rate Determination Date: As to any of the LIBOR Certificates and
each Distribution Date (other than the initial Distribution Date), the second
LIBOR Business Day prior to the beginning of the applicable Interest Accrual
Period for such Certificate and such Distribution Date.

            Rating Agency: Each of Fitch, S&P and Moody's. If either such
organization or a successor is no longer in existence, "Rating Agency" shall be
such nationally recognized statistical rating organization, or other comparable
Person, as is designated by the Depositor, notice of which designation shall be
given to the Trustee. References herein to a given rating or rating category of
a Rating Agency shall mean such rating category without giving effect to any
modifiers.

            Realized Loss: With respect to each Liquidated Mortgage Loan, an
amount as of the date of such liquidation, equal to (i) the unpaid principal
balance of the Liquidated Mortgage Loan as of the date of such liquidation, plus
(ii) interest at the Net Mortgage Interest Rate from the Due Date as to which
interest was last paid or advanced (and not reimbursed) to Certificateholders up
to the Due Date in the month in which Liquidation Proceeds are required to be
distributed on the Stated Principal Balance of such Liquidated Mortgage Loan
from time to time, minus (iii) the Liquidation Proceeds, if any, received during
the month in which such liquidation occurred, to the extent applied as
recoveries of interest at the Net Mortgage Interest Rate and to principal of the
Liquidated Mortgage Loan. With respect to each Mortgage Loan that has become the
subject of a Deficient Valuation, if the principal amount due under the related
Mortgage Note has been reduced, the difference between the principal balance of
the Mortgage Loan outstanding immediately prior to such Deficient Valuation and
the principal balance of the Mortgage Loan as reduced by the Deficient
Valuation. With respect to each Mortgage Loan that has become the subject of a
Debt Service Reduction and any Distribution Date, the amount, if any, by which
the principal portion of the related Monthly Payment has been reduced.

            Record Date: The last day of the month (or, if such day is not a
Business Day, the preceding Business Day) preceding the month in which the
related Distribution Date occurs.

            Recovery: As to any Distribution Date and Loan Group or Assumed Loan
Group, the sum of all amounts received during the calendar month preceding the
month of such Distribution Date on each Mortgage Loan in such Loan Group or
Assumed Loan Group subsequent to such Mortgage Loan being determined to be a
Liquidated Mortgage Loan.

            Refinance Mortgage Loan: Any Mortgage Loan the proceeds of which
were not used to purchase the related Mortgaged Property.

            Regular Certificates: As defined in the Preliminary Statement
hereto.

            Regulation AB: Subpart 229.1100 - Asset Backed Securities
(Regulation AB), 17 C.F.R. ss.ss.229.1100-229.1123, as such may be amended from
time to time, and subject to such clarification and interpretation as have been
provided by the Securities and Exchange Commission in the adopting release
(Asset-Backed Securities, Securities Act Release No. 33-8518, 70 Fed. Reg. 1,506
(Jan. 7, 2005)) or by the staff of the Securities and Exchange Commission, or as
may be provided by the Securities and Exchange Commission or its staff from time
to time.

            Reimbursement Amount: As defined in Section 2.04.

            Related Exchangeable Class: As to any Exchangeable REMIC Class, each
Exchangeable Class included in the same Combination Group.

            Related Exchangeable REMIC Class: As to any Exchangeable Class, each
Exchangeable REMIC Class included in the same Combination Group.

            Relevant Servicing Criteria: The Servicing Criteria applicable to
the various parties, as set forth on Exhibit Q attached hereto. For
clarification purposes, multiple parties can have responsibility for the same
Relevant Servicing Criteria. With respect to a Servicing Function Participant
engaged by the Trustee or the Servicer, the term "Relevant Servicing Criteria"
may refer to a portion of the Relevant Servicing Criteria applicable to the
Servicer or the Trustee.

             Relief Act: The Servicemembers Civil Relief Act, as it may be
amended from time to time.

            Relief Act Reduction: With respect to any Distribution Date, for any
Mortgage Loan as to which there has been a reduction in the amount of interest
collectible thereon for the most recently ended calendar month as a result of
the application of the Relief Act or comparable state legislation, the amount,
if any, by which (i) interest collectible on such Mortgage Loan for the most
recently ended calendar month is less than (ii) interest accrued pursuant to the
terms of the Mortgage Note on the same principal amount and for the same period
as the interest collectible on such Mortgage Loan for the most recently ended
calendar month.

            REMIC: A "real estate mortgage investment conduit" within the
meaning of Section 860D of the Code.

            REMIC Certificate Maturity Date: The "latest possible maturity date"
of the Regular Certificates as that term is defined in Section 2.07.

            REMIC Provisions: Provisions of the federal income tax law relating
to real estate mortgage investment conduits, which appear at Section 860A
through 860G of Subchapter M of Chapter 1 of the Code, and related provisions,
and regulations promulgated thereunder, as the foregoing may be in effect from
time to time, as well as provisions of applicable state laws.

            Remittance Date: As to any Distribution Date, by 2:00 p.m. Eastern
time on the Business Day immediately preceding such Distribution Date.

             REO Disposition Period: As defined in Section 3.14.

            REO Proceeds: Proceeds, net of any related expenses of the Servicer,
received in respect of any REO Property (including, without limitation, proceeds
from the rental of the related Mortgaged Property) which are received prior to
the final liquidation of such Mortgaged Property.

            REO Property: A Mortgaged Property acquired by the Servicer on
behalf of the Trust through foreclosure or deed-in-lieu of foreclosure in
connection with a defaulted Mortgage Loan.

            Reportable Event: As defined in Section 3.22(d).

            Repurchase Price: As to any Defective Mortgage Loan repurchased on
any date pursuant to Section 2.02 or 2.04, an amount equal to the sum of (i) the
unpaid principal balance thereof and (ii) the unpaid accrued interest thereon at
the applicable Mortgage Interest Rate from the Due Date to which interest was
last paid by the Mortgagor to the first day of the month following the month in
which such Mortgage Loan became eligible to be repurchased.

            Request for Release: The Request for Release submitted by the
Servicer to the Trustee or the Custodian on behalf of the Trustee, substantially
in the form of Exhibit E.

            Required Insurance Policy: With respect to any Mortgage Loan, any
insurance policy which is required to be maintained from time to time under this
Agreement in respect of such Mortgage Loan.

            Reserve Fund: Either of the Class 3-A-11 Reserve Fund or the Class
3-A-16 Reserve Fund.

            Residual Certificate: The Class 3-A-R Certificate.

            Responsible Officer: When used with respect to the Trustee, any
officer of the Corporate Trust Department of the Trustee, including any Senior
Vice President, any Vice President, any Assistant Vice President, any Assistant
Secretary, any Trust Officer or Assistant Trust Officer, or any other officer of
the Trustee customarily performing functions similar to those performed by any
of the above designated officers and having responsibility for the
administration of this Agreement.

            Restricted Classes: As defined in Section 5.02(d).

            S&P: Standard & Poor's, a division of The McGraw-Hill Companies,
Inc., or any successor thereto.

            Seller: Bank of America, a national banking association, or its
successor in interest, as seller of the Mortgage Loans under the Mortgage Loan
Purchase Agreement.

            Senior Certificates: The Class 1-A-1, Class 2-A-1, Class 2-A-2,
Class 3-A-1, Class 3-A-2, Class 3-A-3, Class 3-A-4, Class 3-A-5, Class 3-A-6,
Class 3-A-7, Class 3-A-8, Class 3-A-9, Class 3-A-10, Class 3-A-11, Class 3-A-12,
Class 3-A-13, Class 3-A-14, Class 3-A-15, Class 3-A-16, Class 3-A-17, Class
3-A-18, Class 3-A-19, Class 3-A-20, Class 3-A-21, Class 3-A-22, Class 3-A-23,
Class 3-A-24, Class 3-A-25, Class 3-A-26, Class 3-A-27, Class 3-A-28, Class
3-A-29, Class 3-A-30, Class 3-A-31, Class 3-A-32, Class 3-A-33, Class 3-A-34,
Class 3-A-35, Class 3-A-R, Class 3-IO, Class 3-PO and Class 4-A-1 Certificates.

            Senior Credit Support Depletion Date: The date on which the
aggregate Class Certificate Balance of the Subordinate Certificates is reduced
to zero.

            Senior Non-PO Certificates: The Class 1-A-1, Class 2-A-1, Class
2-A-2, Class 3-A-1, Class 3-A-2, Class 3-A-3, Class 3-A-4, Class 3-A-5, Class
3-A-6, Class 3-A-7, Class 3-A-8, Class 3-A-9, Class 3-A-10, Class 3-A-11, Class
3-A-12, Class 3-A-13, Class 3-A-14, Class 3-A-15, Class 3-A-16, Class 3-A-17,
Class 3-A-R, Class 3-IO and Class 4-A-1 Certificates.

            Senior Percentage: With respect to any Distribution Date and Loan
Group 1 or Loan Group 2, the percentage, carried six places rounded up, obtained
by dividing (i) the sum of the Class Certificate Balances of the Senior Non-PO
Certificates of the related Group (plus, in the case of Loan Group 2, the Loan
Group 2 Class 4-A-1 Portion) immediately prior to such Distribution Date by (ii)
the Pool Stated Principal Balance (Non-PO Portion) of such Loan Group. With
respect to any Distribution Date and Assumed Loan Group 3 or Assumed Loan Group
4, the percentage, carried six places rounded up, obtained by dividing (i) the
sum of the Class Certificate Balances of the Senior Non-PO Certificates of Group
3 or, with respect to Assumed Loan Group 4, the Loan Group 3 Class 4-A-1 Portion
immediately prior to such Distribution Date by (ii) the Pool Stated Principal
Balance (Non-PO Portion) of such Assumed Loan Group.

            Senior Prepayment Percentage: For any Distribution Date and Loan
Group (other than Loan Group 3) or Assumed Loan Group during the five years
beginning on the first Distribution Date, 100%. The Senior Prepayment Percentage
for each Loan Group (other than Loan Group 3) or Assumed Loan Group for any
Distribution Date occurring on or after the fifth anniversary of the first
Distribution Date will, except as provided herein, be as follows: for any
Distribution Date in the first year thereafter, the Senior Percentage for such
Loan Group or Assumed Loan Group plus 70% of the Subordinate Percentage for such
Loan Group or Assumed Loan Group for such Distribution Date; for any
Distribution Date in the second year thereafter, the Senior Percentage for such
Loan Group or Assumed Loan Group plus 60% of the Subordinate Percentage for such
Loan Group or Assumed Loan Group for such Distribution Date; for any
Distribution Date in the third year thereafter, the Senior Percentage for such
Loan Group or Assumed Loan Group plus 40% of the Subordinate Percentage for such
Loan Group or Assumed Loan Group for such Distribution Date; for any
Distribution Date in the fourth year thereafter, the Senior Percentage for such
Loan Group or Assumed Loan Group plus 20% of the Subordinate Percentage for such
Loan Group or Assumed Loan Group for such Distribution Date; and for any
Distribution Date in the fifth or later years thereafter, the Senior Percentage
for such Loan Group or Assumed Loan Group for such Distribution Date, unless on
any of the foregoing Distribution Dates the Total Senior Percentage exceeds the
initial Total Senior Percentage, in which case the Senior Prepayment Percentage
for each Loan Group or Assumed Loan Group for such Distribution Date will once
again equal 100%. Notwithstanding the foregoing, no decrease in the Senior
Prepayment Percentage for such Loan Group or Assumed Loan Group will occur
unless both of the Senior Step Down Conditions are satisfied.

            Senior Principal Distribution Amount: Any of the Group 1 Senior
Principal Distribution Amount, the Group 2 Senior Principal Distribution Amount,
the Group 3 Senior Principal Distribution Amount and the Group 4 Senior
Principal Distribution Amount.

            Senior Step Down Conditions: As of any Distribution Date as to which
any decrease in the Senior Prepayment Percentage for a Loan Group (other than
Loan Group 3) or Assumed Loan Group applies, (i) the outstanding principal
balance of all Mortgage Loans (including, for this purpose, any Mortgage Loans
in foreclosure, any REO Property and any Mortgage Loan for which the Mortgagor
has filed for bankruptcy after the Closing Date) delinquent 60 days or more
(averaged over the preceding six-month period), as a percentage of the aggregate
Class Certificate Balance of the Subordinate Certificates, is not equal to or
greater than 50% or (ii) cumulative Realized Losses with respect to the Mortgage
Loans as of the applicable Distribution Date do not exceed the percentages of
the Original Subordinate Class Certificate Balance set forth below:

                                           Percentage of Original
                Distribution Date            Subordinate Class
                    Occurring               Certificate Balance
            ---------------------------- -----------------------
            April 2012 through                     30%
              March 2013............
            April 2013 through                     35%
              March 2014............
            April 2014 through                     40%
              March 2015............
             April 2015 through                     45%
              March 2016............
            April 2016 and                         50%
              thereafter............

            Servicer: Bank of America, a national banking association, or its
successor in interest, in its capacity as servicer of the Mortgage Loans, or any
successor servicer appointed as herein provided.

            Servicer Advance Date: As to any Distribution Date, 11:30 a.m.,
Eastern time, on the Business Day immediately preceding such Distribution Date.

            Servicer Custodial Account: The separate Eligible Account or
Accounts created and maintained by the Servicer pursuant to Section 3.08(b).

            Servicer Custodial Account Reinvestment Income: For each
Distribution Date, all income and gains net of any losses realized since the
preceding Distribution Date from Permitted Investments of funds in the Servicer
Custodial Account.

            Servicer's Certificate: The monthly report required by Section 4.01.

             Servicing Advances: All customary, reasonable and necessary "out of
pocket" costs and expenses incurred in the performance by the Servicer of its
servicing obligations, including, but not limited to (i) the preservation,
restoration and protection of a Mortgaged Property, (ii) expenses reimbursable
to the Servicer pursuant to Section 3.14 and any enforcement or judicial
proceedings, including foreclosures, (iii) the management and liquidation of any
REO Property and (iv) compliance with the obligations under Section 3.12.

            Servicing Compensation: With respect to each Distribution Date, the
sum of (i) the aggregate Servicing Fee for such Distribution Date subject to
reduction as provided in Section 3.17, (ii) any Ancillary Income, (iii) Excess
Proceeds for the preceding month and (iv) the Servicer Custodial Account
Reinvestment Income for such Distribution Date.

            Servicing Criteria: The "servicing criteria" set forth in Item
1122(d) of Regulation AB, as such may be amended from time to time, which as of
the Closing Date are listed on Exhibit Q hereto.

            Servicing Fee: With respect to each Mortgage Loan and Distribution
Date, the amount of the fee payable to the Servicer, which shall, for such
Distribution Date, be equal to one-twelfth of the product of the Servicing Fee
Rate with respect to such Mortgage Loan and the Stated Principal Balance of such
Mortgage Loan. Such fee shall be payable monthly, computed on the basis of the
same Stated Principal Balance and period respecting which any related interest
payment on a Mortgage Loan is computed. The Servicer's right to receive the
Servicing Fee is limited to, and payable solely from, the interest portion
(including recoveries with respect to interest from Liquidation Proceeds and
other proceeds, to the extent permitted by Section 3.11) of related Monthly
Payments collected by the Servicer, or as otherwise provided under Section 3.11.

            Servicing Fee Rate: With respect to each Mortgage Loan, 0.250% per
annum.

             Servicing File: The items pertaining to a particular Mortgage Loan
referred to in Exhibit J hereto, and any additional documents required to be
added to the Servicing File pursuant to the Agreement.

            Servicing Function Participant: Any affiliate, third party vendor or
Subservicer engaged by the Servicer or the Trustee that is participating in the
servicing function with respect to the Mortgage Loans, within the meaning of
Item 1122 of Regulation AB.

            Servicing Officer: Any officer of the Servicer involved in, or
responsible for, the administration and servicing of the Mortgage Loans whose
name appears on a list of servicing officers furnished to the Trustee by the
Servicer, as such list may from time to time be amended.

             Servicing Transfer Costs: All reasonable costs and expenses incurred
by the Trustee in connection with the transfer of servicing from a predecessor
servicer, including, without limitation, any costs or expenses associated with
the complete transfer of all servicing data and the completion, correction or
manipulation of such servicing data as may be required by the Trustee to correct
any errors or insufficiencies in the servicing data or otherwise to enable the
Trustee to service the Mortgage Loans properly and effectively.

            Shift Percentage: As to any Distribution Date, the percentage
indicated below:

                                                      Shift
              Distribution Date Occurring In        Percentage
              -----------------------------------   ----------
              April 2007 through March 2012......        0%
              April 2012 through March 2013......       30%
              April 2013 through March 2014......       40%
              April 2014 through March 2015......       60%
              April 2015 through March 2016......       80%
              April 2016 and thereafter.....           100%

            Similar Law: As defined in Section 6.02(e).

            Sponsor: Bank of America, National Association.

            Stated Principal Balance: As to any Mortgage Loan and date, the
unpaid principal balance of such Mortgage Loan as of the specified Due Date or,
if not specified, as of the Due Date immediately preceding such date as
specified in the amortization schedule at the time relating thereto (before any
adjustment to such amortization schedule by reason of any moratorium or similar
waiver or grace period) after giving effect to any previous partial Principal
Prepayments and Liquidation Proceeds allocable to principal (other than with
respect to any Liquidated Mortgage Loan) and to the payment of principal due on
such Due Date and irrespective of any delinquency in payment by the related
Mortgagor, and after giving effect to any Deficient Valuation.

            Subordinate Balance Ratio: As of any date of determination, the
ratio among the principal balances of the Class 1-LS Interest, the Class 2-LS
Interest, the Class 3-LS Interest and the Class 4-LS Interest, equal to the
ratio among the Group Subordinate Amount of Loan Group 1, the Group Subordinate
Amount of Loan Group 2, the Group Subordinate Amount of Assumed Loan Group 3 and
the Group Subordinate Amount of Assumed Loan Group 4.

            Subordinate Certificates: The Class M, Class B-1, Class B-2, Class
B-3, Class B-4a, Class B-5 and Class B-6 Certificates.

            Subordinate Percentage: As of any Distribution Date and Loan Group
(other than Loan Group 3) or Assumed Loan Group, 100% minus the Senior
Percentage for such Loan Group or Assumed Loan Group for such Distribution Date.

            Subordinate Prepayment Percentage: As to any Distribution Date and
Loan Group (other than Loan Group 3) or Assumed Loan Group, 100% minus the
Senior Prepayment Percentage for such Loan Group or Assumed Loan Group for such
Distribution Date.

            Subordinate Principal Distribution Amount: With respect to any
Distribution Date and Loan Group 1, Loan Group 2, Assumed Loan Group 3 or
Assumed Loan Group 4, an amount equal to the sum of (i) the Subordinate
Percentage for such Loan Group or Assumed Loan Group of the applicable Non-PO
Percentage of the amounts described in clauses (i)(a) through (d) of the
definition of "Non-PO Principal Amount" for such Distribution Date and Loan
Group or Assumed Loan Group and (ii) the Subordinate Prepayment Percentage of
(1) the applicable Non-PO Percentage of the amounts described in clauses (i)(e)
and (f) and (2) the amount described in clause (ii) of the definition of "Non-PO
Principal Amount" for such Distribution Date and Loan Group or Assumed Loan
Group.

            Subservicer: Any Person with which the Servicer has entered into a
Subservicing Agreement and which satisfies the requirements set forth therein.

            Subservicing Agreement: Any subservicing agreement (which, in the
event the Subservicer is an affiliate of the Servicer, need not be in writing)
between the Servicer and any Subservicer relating to servicing and/or
administration of certain Mortgage Loans as provided in Section 3.02.

             Substitute Mortgage Loan: A Mortgage Loan substituted for a
Defective Mortgage Loan which must, on the date of such substitution (i) have a
Stated Principal Balance, after deduction of the principal portion of the
Monthly Payment due in the month of substitution, not in excess of, and not more
than 10% less than, the Stated Principal Balance of the Defective Mortgage Loan;
(ii) have a Net Mortgage Interest Rate equal to that of the Defective Mortgage
Loan; (iii) have a Loan-to-Value Ratio not higher than that of the Defective
Mortgage Loan; (iv) have a remaining term to maturity not greater than (and not
more than one year less than) that of the Defective Mortgage Loan; and (v)
comply with each Mortgage Loan representation and warranty set forth in this
Agreement relating to the Defective Mortgage Loan. More than one Substitute
Mortgage Loan may be substituted for a Defective Mortgage Loan if such
Substitute Mortgage Loans meet the foregoing attributes in the aggregate.

            Substitution Adjustment Amount: As defined in Section 2.02.

            TAC Certificates: The Class 3-A-11 and Class 3-A-14 Certificates.

            TAC Group: The TAC Certificates.

            TAC Principal Amount: As to any Distribution Date and the TAC Group,
the amount, if any, that would reduce the aggregate Class Certificate Balance of
the TAC Group to the applicable balance shown in the table set forth in Exhibit
T with respect to such Distribution Date.

            Tax Matters Person: Any person designated as "tax matters person" in
accordance with Section 5.06 and the manner provided under Treasury Regulation
ss. 1.860F-4(d) and Treasury Regulation ss. 301.6231(a)(7)-1.

            Telerate Page 3750: As defined in Section 5.09.

            Total Covered Amount: As defined in the Mortgage Loan Purchase
Agreement.

            Total Senior Principal Distribution Amount: As to any Distribution
Date and Loan Group (other than Loan Group 3) or Assumed Loan Group, the sum of
(i) the Senior Percentage for such Loan Group or Assumed Loan Group of the
applicable Non-PO Percentage of the amounts described in clauses (i)(a) through
(d) of the definition of "Non-PO Principal Amount" for such Distribution Date
and Loan Group or Assumed Loan Group and (ii) the Senior Prepayment Percentage
for such Loan Group or Assumed Loan Group of (1) the applicable Non-PO
Percentage of the amounts described in clauses (i)(e) and (f) and (2) the amount
described in clause (ii) of the definition of "Non-PO Principal Amount" for such
Distribution Date and Loan Group or Assumed Loan Group.

            Total Senior Percentage: With respect to any Distribution Date, the
percentage, carried six places rounded up, obtained by dividing the aggregate
Class Certificate Balance of the Senior Non-PO Certificates immediately prior to
such Distribution Date by the aggregate Pool Stated Principal Balance (Non-PO
Portion) of Loan Group 1, Loan Group 2, Assumed Loan Group 3 and Assumed Loan
Group 4 for such Distribution Date.

            Treasury Regulations: The final and temporary regulations
promulgated under the Code by the U.S. Department of the Treasury.

            Trust: The trust created by this Agreement.

            Trust Estate: The corpus of the Trust created to the extent
described herein, consisting of the Mortgage Loans, such assets as shall from
time to time be identified as deposited in the Servicer Custodial Account or the
Certificate Account, the Reserve Fund or the Posted Collateral Account, in
accordance with this Agreement, REO Property, the Primary Insurance Policies,
any other Required Insurance Policy, the right to receive any BPP Mortgage Loan
Payment, the Trustee's rights under the Yield Maintenance Agreements and the
right to receive amounts, if any, payable on behalf of any Mortgagor from the
Buy-Down Account relating to any Buy-Down Mortgage Loan. The Buy-Down Account
shall not be part of the Trust Estate.

            Trustee: Wells Fargo Bank, N.A., and any successors-in-interest and,
if a successor trustee is appointed hereunder, such successor, as trustee.

            Trustee Fee: As to any Distribution Date and Loan Group, an amount
equal to one-twelfth of the Trustee Fee Rate multiplied by the aggregate Stated
Principal Balance of the Mortgage Loans in the related Loan Group as of the Due
Date in the month preceding the month in which such Distribution Date occurs.

            Trustee Fee Rate: With respect to each Mortgage Loan, 0.0075% per
annum.

            Uncertificated Lower-Tier Interest: A regular interest in the
Lower-Tier REMIC which is held as an asset of the Middle-Tier REMIC and is
entitled to monthly distributions as provided in Section 5.02(a) hereof. Any of
the Class 1-L Interest, Class 1-LS Interest, Class 2-L Interest, Class 2-LS
Interest, Class 3-L Interest, Class 3-LS Interest, Class 3-LPO Interest, Class
3-LWIO Interest, Class 4-L Interest and Class 4-LS Interest are Uncertificated
Lower-Tier Interests.

            Uncertificated Middle-Tier Interest: A regular interest in the
Middle-Tier REMIC which is held as an asset of the Upper-Tier REMIC and is
entitled to monthly distributions as provided in Section 5.02(a) hereof. Any of
the Class 1-A-M1 Interest, Class 2-A-M1 Interest, Class 3-A-M1 Interest, Class
3-A-M4 Interest, Class 3-A-M6 Interest, Class 3-A-M8 Interest, Class 3-A-M10
Interest, Class 3-A-M11 Interest, Class 3-A-M16 Interest, Class 3-A-MUR
Interest, Class 3-MIO Interest, Class 3-MPO Interest, Class 4-A-M1 Interest and
Class M-M1 Interest are Uncertificated Middle-Tier Interests.

            Underwriting Guidelines: The underwriting guidelines of Bank of
America.

            Upper-Tier Certificate Sub-Account: The sub-account of the
Certificate Account designated by the Trustee pursuant to Section 3.08(f).

            Upper-Tier REMIC: As defined in the Preliminary Statement, the
assets of which consist of the Uncertificated Lower-Tier Interests and such
amounts as shall from time to time be deemed to be held in the Upper-Tier
Certificate Sub-Account.

            U.S. Person: A citizen or resident of the United States, a
corporation or partnership (unless, in the case of a partnership, Treasury
Regulations are adopted that provide otherwise) created or organized in or under
the laws of the United States, any state thereof or the District of Columbia,
including an entity treated as a corporation or partnership for federal income
tax purposes, an estate whose income is subject to United States federal income
tax regardless of its source, or a trust if a court within the United States is
able to exercise primary supervision over the administration of such trust, and
one or more such U.S. Persons have the authority to control all substantial
decisions of such trust (or, to the extent provided in applicable Treasury
Regulations, certain trusts in existence on August 20, 1996 which are eligible
to elect to be treated as U.S. Persons).

            Voting Rights: The portion of the voting rights of all of the
Certificates (other than the Exchangeable Certificates) which is allocated to
any Certificate. As of any date of determination, (a) 1% of all Voting Rights
shall be allocated to the Holders of the Class 3-A-3 Certificates, (b) 1% of all
Voting Rights shall be allocated to the Holders of the Class 3-A-5 Certificates,
(c) 1% of all Voting Rights shall be allocated to the Holders of the Class 3-A-7
Certificates, (d) 1% of all Voting Rights shall be allocated to the Holders of
the Class 3-A-9 Certificates, (e) 1% of all Voting Rights shall be allocated to
the Holders of the Class 3-A-12 Certificates, (f) 1% of all Voting Rights shall
be allocated to the Holders of the Class 3-A-17 Certificates, (g) 1% of all
Voting Rights shall be allocated to the Holders of the Class 3-IO Certificates,
(h) 1% of all Voting Rights shall be allocated to the Holder of the Residual
Certificate and (i) the remaining Voting Rights shall be allocated among Holders
of the remaining Classes of Certificates in proportion to the Certificate
Balances of their respective Certificates on such date. As to any Exchangeable
Certificates, in the event that all or a portion of a combination of Classes of
Exchangeable REMIC Certificates in any Exchangeable REMIC Combination is
exchanged for a proportionate portion of the Class of Exchangeable Certificates
in the related Exchangeable Combination, the Class of such Exchangeable
Certificates will be entitled to a proportionate share of the Voting Rights
allocated to the Classes of Exchangeable REMIC Certificates in the related
Exchangeable REMIC Combination.

            Yield Maintenance Agreement: Either of the Class 3-A-11 Yield
Maintenance Agreement or the Class 3-A-16 Yield Maintenance Agreement.

            Yield Maintenance Agreement Payment: Any Class 3-A-11 Yield
Maintenance Agreement Payment or Class 3-A-16 Yield Maintenance Agreement
Payment.

            Section 1.02 Interest Calculations.All calculations of interest will
be made on a 360-day year consisting of twelve 30-day months. All dollar amounts
calculated hereunder shall be rounded to the nearest penny with one-half of one
penny being rounded down.

            Section 1.03 Fiscal Year. The fiscal year of the Trust will be the
calendar year.

                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS
                        ORIGINAL ISSUANCE OF CERTIFICATES

            Section 2.01 Conveyance of Mortgage Loans. (a) The Depositor,
concurrently with the execution and delivery hereof, hereby sells, transfers,
assigns, sets over and otherwise conveys to the Trustee on behalf of the Trust
for the benefit of the Certificateholders, without recourse, all the right,
title and interest of the Depositor in and to the Mortgage Loans, including all
interest and principal received on or with respect to the Mortgage Loans (other
than payments of principal and interest due and payable on the Mortgage Loans on
or before the Cut-off Date). The foregoing sale, transfer, assignment and set
over does not and is not intended to result in a creation of an assumption by
the Trustee of any obligation of the Depositor or any other Person in connection
with the Mortgage Loans or any agreement or instrument relating thereto, except
as specifically set forth herein. In addition, the Depositor, concurrently with
the execution and delivery hereof, hereby sells, transfers, assigns, sets over
and otherwise conveys to the Trustee on behalf of the Trust for the benefit of
the Certificateholders, without recourse, the Depositor's rights to receive any
BPP Mortgage Loan Payment. It is agreed and understood by the parties hereto
that it is not intended that any mortgage loan be included in the Trust that is
a "High-Cost Home Loan" as defined in any of (i) the New Jersey Home Ownership
Act effective November 27, 2003, (ii) the New Mexico Home Loan Protection Act
effective January 1, 2004, (iii) the Massachusetts Predatory Home Loan Practices
Act effective November 7, 2004 or (iv) the Indiana Home Loan Practices Act,
effective January 1, 2005.

            (b) In connection with such transfer and assignment, the Depositor
shall deliver or cause to be delivered to the Trustee, for the benefit of the
Certificateholders, the following documents or instruments with respect to each
Mortgage Loan so assigned:

            (i) the original Mortgage Note, endorsed by manual or facsimile
      signature in the following form: "Pay to the order of Wells Fargo Bank,
      N.A., as trustee for the holders of the Banc of America Alternative Loan
      Trust 2007-1 Mortgage Pass-Through Certificates, Series 2007-1, without
      recourse," with all necessary intervening endorsements showing a complete
      chain of endorsement from the originator to the Trustee (each such
      endorsement being sufficient to transfer all right, title and interest of
      the party so endorsing, as noteholder or assignee thereof, in and to that
      Mortgage Note);

            (ii) except as provided below, the original recorded Mortgage with
      evidence of a recording thereon, or if any such Mortgage has not been
      returned from the applicable recording office or has been lost, or if such
      public recording office retains the original recorded Mortgage, a copy of
      such Mortgage certified by the Depositor as being a true and correct copy
      of the Mortgage;

            (iii) subject to the provisos at the end of this paragraph, a duly
      executed Assignment of Mortgage to "Wells Fargo Bank, N.A., as trustee for
      the holders of the Banc of America Alternative Loan Trust 2007-1 Mortgage
      Pass-Through Certificates, Series 2007-1" (which may be included in a
      blanket assignment or assignments), together with, except as provided
      below, originals of all interim recorded assignments of such mortgage or a
      copy of such interim assignment certified by the Depositor as being a true
      and complete copy of the original recorded intervening assignments of
      Mortgage (each such assignment, when duly and validly completed, to be in
      recordable form and sufficient to effect the assignment of and transfer to
      the assignee thereof, under the Mortgage to which the assignment relates);
      provided that, if the related Mortgage has not been returned from the
      applicable public recording office, such Assignment of Mortgage may
      exclude the information to be provided by the recording office; and
      provided, further, if the related Mortgage has been recorded in the name
      of Mortgage Electronic Registration Systems, Inc. ("MERS") or its
      designee, no Assignment of Mortgage in favor of the Trustee will be
      required to be prepared or delivered and instead, the Servicer shall take
      all actions as are necessary to cause the Trust to be shown as the owner
      of the related Mortgage Loan on the records of MERS for purposes of the
      system of recording transfers of beneficial ownership of mortgages
      maintained by MERS;

            (iv) the originals of all assumption, modification, consolidation or
      extension agreements, if any, with evidence of recording thereon, if any;

             (v) any of (A) the original or duplicate original mortgagee title
      insurance policy and all riders thereto, (B) a title search showing no
      lien (other than standard exceptions of the type described in Section 2.04
      (viii)) on the Mortgaged Property senior to the lien of the Mortgage or
      (C) an opinion of counsel of the type customarily rendered in the
      applicable jurisdiction in lieu of a title insurance policy;

            (vi) the original of any guarantee executed in connection with the
      Mortgage Note;

            (vii) for each Mortgage Loan, if any, which is secured by a
      residential long-term lease, a copy of the lease with evidence of
      recording indicated thereon, or, if the lease is in the process of being
       recorded, a photocopy of the lease, certified by an officer of the
      respective prior owner of such Mortgage Loan or by the applicable title
      insurance company, closing/settlement/escrow agent or company or closing
      attorney to be a true and correct copy of the lease transmitted for
      recordation;

            (viii) the original of any security agreement, chattel mortgage or
      equivalent document executed in connection with the Mortgage; and

            (ix) for each Mortgage Loan secured by Co-op Shares, the originals
      of the following documents or instruments:

                  (A) The stock certificate;

                  (B) The stock power executed in blank;

                  (C) The executed proprietary lease;

                   (D) The executed recognition agreement;

                  (E) The executed assignment of recognition agreement, if any;

                  (F) The executed UCC-1 financing statement with evidence of
            recording thereon; and

                   (G) Executed UCC-3 financing statements or other appropriate
            UCC financing statements required by state law, evidencing a
            complete and unbroken line from the mortgagee to the Trustee with
            evidence of recording thereon (or in a form suitable for
            recordation).

provided, however, that on the Closing Date, with respect to item (iii), the
Depositor has delivered to the Trustee a copy of such Assignment of Mortgage in
blank and has caused the Servicer to retain the completed Assignment of Mortgage
for recording as described below, unless such Mortgage has been recorded in the
name of MERS or its designee. In addition, if the Depositor is unable to deliver
or cause the delivery of any original Mortgage Note due to the loss of such
original Mortgage Note, the Depositor may deliver a copy of such Mortgage Note,
together with a lost note affidavit, and shall thereby be deemed to have
satisfied the document delivery requirements of this Section 2.01(b).

             If in connection with any Mortgage Loans, the Depositor cannot
deliver (A) the Mortgage, (B) all interim recorded assignments, (C) all
assumption, modification, consolidation or extension agreements, if any, or (D)
the lender's title policy, if any, (together with all riders thereto) satisfying
the requirements of clause (ii), (iii), (iv) or (v) above, respectively,
concurrently with the execution and delivery hereof because such document or
documents have not been returned from the applicable public recording office in
the case of clause (ii), (iii) or (iv) above, or because the title policy, if
any, has not been delivered to either the Servicer or the Depositor by the
applicable title insurer in the case of clause (v) above, the Depositor shall
promptly deliver or cause to be delivered to the Trustee or the Custodian on
behalf of the Trustee, in the case of clause (ii), (iii) or (iv) above, such
Mortgage, such interim assignment or such assumption, modification,
consolidation or extension agreement, as the case may be, with evidence of
recording indicated thereon upon receipt thereof from the public recording
office, but in no event shall any such delivery of any such documents or
instruments be made later than one year following the Closing Date, unless, in
the case of clause (ii), (iii) or (iv) above, there has been a continuing delay
at the applicable recording office or, in the case of clause (v), there has been
a continuing delay at the applicable insurer and the Depositor has delivered the
Officer's Certificate to such effect to the Trustee. The Depositor shall forward
or cause to be forwarded to the Trustee (1) from time to time additional
original documents evidencing an assumption or modification of a Mortgage Loan
and (2) any other documents required to be delivered by the Depositor or the
Servicer to the Trustee or the Custodian on the Trustee's behalf. In the event
that the original Mortgage is not delivered and in connection with the payment
in full of the related Mortgage Loan the public recording office requires the
presentation of a "lost instruments affidavit and indemnity" or any equivalent
document, because only a copy of the Mortgage can be delivered with the
instrument of satisfaction or reconveyance, the Servicer shall prepare, execute
and deliver or cause to be prepared, executed and delivered, on behalf of the
Trust, such a document to the public recording office.

            As promptly as practicable subsequent to such transfer and
assignment, and in any event, within 30 days thereafter, the Servicer shall
(except for any Mortgage which has been recorded in the name of MERS or its
designee) (I) cause each Assignment of Mortgage to be in proper form for
recording in the appropriate public office for real property records within 30
days of the Closing Date and (II) at the Depositor's expense, cause to be
delivered for recording in the appropriate public office for real property
records the Assignments of the Mortgages to the Trustee, except that, with
respect to any Assignment of a Mortgage as to which the Servicer has not
received the information required to prepare such assignment in recordable form,
the Servicer's obligation to do so and to deliver the same for such recording
shall be as soon as practicable after receipt of such information and in any
event within 30 days after the receipt thereof and, no recording of an
Assignment of Mortgage will be required in a state if either (i) the Depositor
furnishes to the Trustee an unqualified Opinion of Counsel reasonably acceptable
to the Trustee to the effect that recordation of such assignment is not
necessary under applicable state law to preserve the Trustee's interest in the
related Mortgage Loan against the claim of any subsequent transferee of such
Mortgage Loan or any successor to, or creditor of, the Depositor or the
originator of such Mortgage Loan or (ii) the recordation of an Assignment of
Mortgage in such state is not required by either Rating Agency in order to
obtain the initial ratings on the Certificates on the Closing Date. Set forth on
Exhibit L attached hereto is a list of all states where recordation is required
by either Rating Agency to obtain the initial ratings of the Certificates. The
Trustee may rely and shall be protected in relying upon the information
contained in such Exhibit L.

            In the case of Mortgage Loans that have been prepaid in full as of
the Closing Date, the Depositor, in lieu of delivering the above documents to
the Trustee, or the Custodian on the Trustee's behalf, will cause the Servicer
to deposit in the Servicer Custodial Account the portion of such payment that is
required to be deposited in the Servicer Custodial Account pursuant to Section
3.08.

            Section 2.02 Acceptance by the Trustee of the Mortgage Loans.
Subject to the provisions of the following paragraph, the Trustee declares that
it, or the Custodian as its agent, will hold the documents referred to in
Section 2.01 and the other documents delivered to it constituting the Mortgage
Files, and that it will hold such other assets as are included in the Trust
Estate, in trust for the exclusive use and benefit of all present and future
Certificateholders. Upon execution and delivery of this document, the Trustee
shall deliver or cause the Custodian to deliver to the Depositor, the Trustee
and the Servicer a certification in the form of Exhibit M hereto (the "Initial
Certification") to the effect that, except as may be specified in a list of
exceptions attached thereto, it has received the original Mortgage Note relating
to each of the Mortgage Loans listed on the Mortgage Loan Schedule.

            Within 90 days after the execution and delivery of this Agreement,
the Trustee shall review, or cause the Custodian to review, the Mortgage Files
in its possession, and shall deliver to the Depositor, the Trustee and the
Servicer a certification in the form of Exhibit N hereto (the "Final
Certification") to the effect that, as to each Mortgage Loan listed in the
Mortgage Loan Schedule, except as may be specified in a list of exceptions
attached to such Final Certification, such Mortgage File contains all of the
items required to be delivered pursuant to Section 2.01(b).

            If, in the course of such review, the Trustee or the Custodian finds
any document constituting a part of a Mortgage File which does not meet the
requirements of Section 2.01 or is omitted from such Mortgage File, the Trustee
shall promptly so notify the Servicer and the Depositor, or shall cause the
Custodian to promptly so notify the Servicer and the Depositor. In performing
any such review, the Trustee or the Custodian may conclusively rely on the
purported genuineness of any such document and any signature thereon. It is
understood that the scope of the Trustee's or the Custodian's review of the
Mortgage Files is limited solely to confirming that the documents listed in
Section 2.01 have been received and further confirming that any and all
documents delivered pursuant to Section 2.01 appear on their face to have been
executed and relate to the Mortgage Loans identified in the Mortgage Loan
Schedule based solely upon the review of items (i) and (xi) in the definition of
Mortgage Loan Schedule. Neither the Trustee nor the Custodian shall have any
responsibility for determining whether any document is valid and binding,
whether the text of any assignment or endorsement is in proper or recordable
form, whether any document has been recorded in accordance with the requirements
of any applicable jurisdiction, or whether a blanket assignment is permitted in
any applicable jurisdiction. The Depositor hereby covenants and agrees that it
will promptly correct or cure such defect within 90 days from the date it was so
notified of such defect and, if the Depositor does not correct or cure such
defect within such period, the Depositor will either (a) substitute for the
related Mortgage Loan a Substitute Mortgage Loan, which substitution shall be
accomplished in the manner and subject to the conditions set forth below or (b)
purchase such Mortgage Loan from the Trustee at the Repurchase Price for such
Mortgage Loan; provided, however, that in no event shall such a substitution
occur more than two years from the Closing Date; provided, further, that such
substitution or repurchase shall occur within 90 days of when such defect was
discovered if such defect will cause the Mortgage Loan not to be a "qualified
mortgage" within the meaning of Section 860G(a)(3) of the Code.

            With respect to each Substitute Mortgage Loan the Depositor shall
deliver to the Trustee, for the benefit of the Certificateholders, the Mortgage
Note, the Mortgage, the related Assignment of Mortgage (except for any Mortgage
which has been recorded in the name of MERS or its designee), and such other
documents and agreements as are otherwise required by Section 2.01, with the
Mortgage Note endorsed and the Mortgage assigned as required by Section 2.01. No
substitution is permitted to be made in any calendar month after the
Determination Date for such month. Monthly Payments due with respect to any such
Substitute Mortgage Loan in the month of substitution shall not be part of the
Trust Estate and will be retained by the Depositor. For the month of
substitution, distributions to Certificateholders will include the Monthly
Payment due for such month on any Defective Mortgage Loan for which the
Depositor has substituted a Substitute Mortgage Loan.

            The Servicer shall amend the Mortgage Loan Schedule for the benefit
of the Certificateholders to reflect the removal of each Mortgage Loan that has
become a Defective Mortgage Loan and the substitution of the Substitute Mortgage
Loan or Loans and the Servicer shall deliver the amended Mortgage Loan Schedule
to the Trustee and the Custodian. Upon such substitution, each Substitute
Mortgage Loan shall be subject to the terms of this Agreement in all respects,
and the Depositor shall be deemed to have made to the Trustee with respect to
such Substitute Mortgage Loan, as of the date of substitution, the
representations and warranties made pursuant to Section 2.04. Upon any such
substitution and the deposit to the Servicer Custodial Account of any required
Substitution Adjustment Amount (as described in the next paragraph) and receipt
of a Request for Release, the Trustee shall release, or shall direct the
Custodian to release, the Mortgage File relating to such Defective Mortgage Loan
to the Depositor and shall execute and deliver at the Depositor's direction such
instruments of transfer or assignment prepared by the Depositor, in each case
without recourse, as shall be necessary to vest title in the Depositor, or its
designee, to the Trustee's interest in any Defective Mortgage Loan substituted
for pursuant to this Section 2.02.

            For any month in which the Depositor substitutes one or more
Substitute Mortgage Loans for one or more Defective Mortgage Loans, the amount
(if any) by which the aggregate principal balance of all such Substitute
Mortgage Loans in a Loan Group as of the date of substitution is less than the
aggregate Stated Principal Balance of all such Defective Mortgage Loans in such
Loan Group (after application of the principal portion of the Monthly Payments
due in the month of substitution) (the "Substitution Adjustment Amount" for such
Loan Group) plus an amount equal to the aggregate of any unreimbursed Advances
with respect to such Defective Mortgage Loans shall be deposited into the
Servicer Custodial Account by the Depositor on or before the Remittance Date for
the Distribution Date in the month succeeding the calendar month during which
the related Mortgage Loan is required to be purchased or replaced hereunder.

            The Trustee shall retain or shall cause the Custodian to retain
possession and custody of each Mortgage File in accordance with and subject to
the terms and conditions set forth herein. The Servicer shall promptly deliver
to the Trustee, upon the execution or, in the case of documents requiring
recording, receipt thereof, the originals of such other documents or instruments
constituting the Mortgage File as come into the Servicer's possession from time
to time.

            It is understood and agreed that the obligation of the Depositor to
substitute for or to purchase any Mortgage Loan which does not meet the
requirements of Section 2.01 shall constitute the sole remedy respecting such
defect available to the Trustee and any Certificateholder against the Depositor.

            The Trustee or the Custodian, on behalf of the Trustee, shall be
under no duty or obligation (i) to inspect, review or examine any such
documents, instruments, certificates or other papers to determine that they are
genuine, enforceable, or appropriate for the represented purpose or that they
are other than what they purport to be on their face or (ii) to determine
whether any Mortgage File should include any of the documents specified in
Section 2.01(b)(iv), (vi), (vii), (viii) and (ix). In connection with making the
certifications required hereunder, to the extent a title search or opinion of
counsel has been provided in lieu of a title policy for any Mortgage Loan, the
Trustee shall only be responsible for confirming that a title search or opinion
of counsel has been provided for such Mortgage Loan and shall not be deemed to
have certified that the content of such title search or opinion of counsel is
sufficient to meet the requirements of Section 2.01(b)(v).

            Section 2.03 Representations and Warranties of the Servicer. The
Servicer hereby makes the following representations and warranties to the
Depositor and the Trustee, as of the Closing Date:

            (i) The Servicer is a national banking association duly organized,
      validly existing, and in good standing under the federal laws of the
      United States of America and has all licenses necessary to carry on its
      business as now being conducted and is licensed, qualified and in good
      standing in each of the states where a Mortgaged Property is located if
      the laws of such state require licensing or qualification in order to
      conduct business of the type conducted by the Servicer. The Servicer has
      power and authority to execute and deliver this Agreement and to perform
      in accordance herewith; the execution, delivery and performance of this
      Agreement (including all instruments of transfer to be delivered pursuant
      to this Agreement) by the Servicer and the consummation of the
      transactions contemplated hereby have been duly and validly authorized.
      This Agreement, assuming due authorization, execution and delivery by the
      other parties hereto, evidences the valid, binding and enforceable
      obligation of the Servicer, subject to applicable law except as
      enforceability may be limited by (A) bankruptcy, insolvency, liquidation,
      receivership, moratorium, reorganization or other similar laws affecting
      the enforcement of creditors' rights generally or creditors of national
      banks and (B) general principles of equity, whether enforcement is sought
      in a proceeding in equity or at law. All requisite corporate action has
      been taken by the Servicer to make this Agreement valid and binding upon
      the Servicer in accordance with its terms.

            (ii) No consent, approval, authorization or order is required for
      the transactions contemplated by this Agreement from any court,
      governmental agency or body, or federal or state regulatory authority
      having jurisdiction over the Servicer is required or, if required, such
      consent, approval, authorization or order has been or will, prior to the
      Closing Date, be obtained.

            (iii) The consummation of the transactions contemplated by this
      Agreement are in the ordinary course of business of the Servicer and will
      not result in the breach of any term or provision of the charter or
      by-laws of the Servicer or result in the breach of any term or provision
      of, or conflict with or constitute a default under or result in the
      acceleration of any obligation under, any agreement, indenture or loan or
      credit agreement or other instrument to which the Servicer or its property
      is subject, or result in the violation of any law, rule, regulation,
      order, judgment or decree to which the Servicer or its property is
      subject.

            (iv) There is no action, suit, proceeding or investigation pending
      or, to the best knowledge of the Servicer, threatened against the Servicer
      which, either individually or in the aggregate, would result in any
      material adverse change in the business, operations, financial condition,
      properties or assets of the Servicer, or in any material impairment of the
      right or ability of the Servicer to carry on its business substantially as
      now conducted or which would draw into question the validity of this
      Agreement or the Mortgage Loans or of any action taken or to be taken in
      connection with the obligations of the Servicer contemplated herein, or
      which would materially impair the ability of the Servicer to perform under
      the terms of this Agreement.

            (v) The Servicer has fully furnished, and shall continue to fully
      furnish for so long as it is servicing the Mortgage Loans hereunder, in
      accordance with the Fair Credit Reporting Act and its implementing
      regulations, accurate and complete information on the related Mortgagor
      credit files to Equifax, Experian and Trans Union Credit Information
      Company on a monthly basis.

            The representations and warranties made pursuant to this Section
2.03 shall survive delivery of the respective Mortgage Files to the Trustee for
the benefit of the Certificateholders. Upon discovery by any of the Depositor,
the Servicer or the Trustee of a breach of any of the representations or
warranties set forth in this Section 2.03, the party discovering such breach
shall give prompt written notice to the other parties.

            Section 2.04 Representations and Warranties of the Depositor as to
the Mortgage Loans. The Depositor hereby represents and warrants to the Trustee
with respect to the Mortgage Loans or each Mortgage Loan, as the case may be, as
of the date hereof or such other date set forth herein that as of the Closing
Date:

            (i) The information set forth in the Mortgage Loan Schedule is true
      and correct in all material respects.

            (ii) There are no delinquent taxes, ground rents, governmental
      assessments, insurance premiums, leasehold payments, including assessments
      payable in future installments or other outstanding charges affecting the
      lien priority of the related Mortgaged Property.

            (iii) The terms of the Mortgage Note and the Mortgage have not been
      impaired, waived, altered or modified in any respect, except by written
      instruments, recorded in the applicable public recording office if
      necessary to maintain the lien priority of the Mortgage, and which have
      been delivered to the Trustee; the substance of any such waiver,
       alteration or modification has been approved by the insurer under the
      Primary Insurance Policy, if any, the title insurer, to the extent
      required by the related policy, and is reflected on the Mortgage Loan
      Schedule. No instrument of waiver, alteration or modification has been
      executed, and no Mortgagor has been released, in whole or in part, except
      in connection with an assumption agreement approved by the insurer under
      the Primary Insurance Policy, if any, the title insurer, to the extent
      required by the policy, and which assumption agreement has been delivered
      to the Trustee.

            (iv) The Mortgage Note and the Mortgage are not subject to any right
      of rescission, set-off, counterclaim or defense, including the defense of
      usury, nor will the operation of any of the terms of the Mortgage Note and
      the Mortgage, or the exercise of any right thereunder, render either the
      Mortgage Note or the Mortgage unenforceable, in whole or in part, or
      subject to any right of rescission, set-off, counterclaim or defense,
      including the defense of usury and no such right of rescission, set-off,
      counterclaim or defense has been asserted with respect thereto.

            (v) All buildings upon the Mortgaged Property are insured by an
      insurer generally acceptable to prudent mortgage lending institutions
      against loss by fire, hazards of extended coverage and such other hazards
      as are customary in the area the Mortgaged Property is located, pursuant
      to insurance policies conforming to the requirements of Customary
      Servicing Procedures and this Agreement. All such insurance policies
      contain a standard mortgagee clause naming the originator of the Mortgage
      Loan, its successors and assigns as mortgagee and all premiums thereon
      have been paid. If the Mortgaged Property is in an area identified on a
      flood hazard map or flood insurance rate map issued by the Federal
      Emergency Management Agency as having special flood hazards (and such
      flood insurance has been made available), a flood insurance policy meeting
      the requirements of the current guidelines of the Federal Insurance
      Administration is in effect which policy conforms to the requirements of
      Fannie Mae or Freddie Mac. The Mortgage obligates the Mortgagor thereunder
      to maintain all such insurance at the Mortgagor's cost and expense, and on
      the Mortgagor's failure to do so, authorizes the holder of the Mortgage to
      maintain such insurance at Mortgagor's cost and expense and to seek
      reimbursement therefor from the Mortgagor.

            (vi) Any and all requirements of any federal, state or local law
      including, without limitation, usury, truth in lending, real estate
      settlement procedures, consumer credit protections, all applicable
      predatory and abusive lending laws, equal credit opportunity or disclosure
      laws applicable to the origination and servicing of Mortgage Loan have
      been complied with.

            (vii) The Mortgage has not been satisfied, canceled, subordinated or
      rescinded, in whole or in part (other than as to Principal Prepayments in
      full which may have been received prior to the Closing Date), and the
      Mortgaged Property has not been released from the lien of the Mortgage, in
      whole or in part, nor has any instrument been executed that would effect
      any such satisfaction, cancellation, subordination, rescission or release.

            (viii) The Mortgage is a valid, existing and enforceable first lien
      on the Mortgaged Property, including all improvements on the Mortgaged
      Property subject only to (A) the lien of current real property taxes and
      assessments not yet due and payable, (B) covenants, conditions and
      restrictions, rights of way, easements and other matters of the public
      record as of the date of recording being acceptable to mortgage lending
      institutions generally and specifically referred to in the lender's title
      insurance policy delivered to the originator of the Mortgage Loan and
      which do not adversely affect the Appraised Value of the Mortgaged
      Property, (C) if the Mortgaged Property consists of Co-op Shares, any lien
      for amounts due to the cooperative housing corporation for unpaid
      assessments or charges or any lien of any assignment of rents or
      maintenance expenses secured by the real property owned by the cooperative
      housing corporation, and (D) other matters to which like properties are
      commonly subject which do not materially interfere with the benefits of
      the security intended to be provided by the Mortgage or the use,
      enjoyment, value or marketability of the related Mortgaged Property. Any
      security agreement, chattel mortgage or equivalent document related to and
      delivered in connection with the Mortgage Loan establishes and creates a
      valid, existing and enforceable first lien and first priority security
      interest on the property described therein and the Depositor has the full
      right to sell and assign the same to the Trustee.

            (ix) The Mortgage Note and the related Mortgage are genuine and each
      is the legal, valid and binding obligation of the maker thereof,
      enforceable in accordance with its terms except as enforceability may be
      limited by (A) bankruptcy, insolvency, liquidation, receivership,
      moratorium, reorganization or other similar laws affecting the enforcement
      of the rights of creditors and (B) general principles of equity, whether
      enforcement is sought in a proceeding in equity or at law.

            (x) All parties to the Mortgage Note and the Mortgage had legal
      capacity to enter into the Mortgage Loan and to execute and deliver the
      Mortgage Note and the Mortgage, and the Mortgage Note and the Mortgage
      have been duly and properly executed by such parties.

            (xi) The proceeds of the Mortgage Loan have been fully disbursed to
      or for the account of the Mortgagor and there is no obligation for the
      Mortgagee to advance additional funds thereunder and any and all
      requirements as to completion of any on-site or off-site improvements and
       as to disbursements of any escrow funds therefor have been complied with.
      All costs, fees and expenses incurred in making or closing the Mortgage
      Loan and the recording of the Mortgage have been paid, and the Mortgagor
      is not entitled to any refund of any amounts paid or due to the Mortgagee
      pursuant to the Mortgage Note or Mortgage.

            (xii) To the best of the Depositor's knowledge, all parties which
      have had any interest in the Mortgage Loan, whether as mortgagee,
      assignee, pledgee or otherwise, are (or, during the period in which they
      held and disposed of such interest, were) in compliance with any and all
      applicable "doing business" and licensing requirements of the laws of the
      state wherein the Mortgaged Property is located.

            (xiii) (A) The Mortgage Loan is covered by an ALTA lender's title
      insurance policy, acceptable to Fannie Mae or Freddie Mac, issued by a
      title insurer acceptable to Fannie Mae or Freddie Mac and qualified to do
      business in the jurisdiction where the Mortgaged Property is located,
      insuring (subject to the exceptions contained in (viii)(A) and (B) above)
      the Seller, its successors and assigns as to the first priority lien of
       the Mortgage in the original principal amount of the Mortgage Loan, (B) a
      title search has been done showing no lien (other than the exceptions
      contained in (viii)(A) and (B) above) on the related Mortgaged Property
      senior to the lien of the Mortgage or (C) in the case of any Mortgage Loan
      secured by a Mortgaged Property located in a jurisdiction where such
      policies are generally not available, an opinion of counsel of the type
      customarily rendered in such jurisdiction in lieu of title insurance is
      instead received. For each Mortgage Loan covered by a title insurance
      policy (x) the Depositor is the sole insured of such lender's title
      insurance policy, and such lender's title insurance policy is in full
      force and effect and will be in full force and effect upon the
      consummation of the transactions contemplated by this Agreement and (y) no
      claims have been made under such lender's title insurance policy, and the
      Depositor has not done, by act or omission, anything which would impair
      the coverage of such lender's title insurance policy.

            (xiv) There is no default, breach, violation or event of
      acceleration existing under the Mortgage or the Mortgage Note and no event
      which, with the passage of time or with notice and the expiration of any
      grace or cure period, would constitute a default, breach, violation or
      event of acceleration, and the Seller has not waived any default, breach,
      violation or event of acceleration.

            (xv) As of the date of origination of the Mortgage Loan, there had
      been no mechanics' or similar liens or claims filed for work, labor or
      material (and no rights are outstanding that under law could give rise to
      such lien) affecting the related Mortgaged Property which are or may be
      liens prior to, or equal or coordinate with, the lien of the related
      Mortgage.

            (xvi) All improvements which were considered in determining the
      Appraised Value of the related Mortgaged Property lay wholly within the
      boundaries and building restriction lines of the Mortgaged Property, and
      no improvements on adjoining properties encroach upon the Mortgaged
      Property.

             (xvii) The Mortgage Loan was originated by a savings and loan
      association, savings bank, commercial bank, credit union, insurance
      company, or similar institution which is supervised and examined by a
      federal or state authority, or by a mortgagee approved by the Secretary of
      Housing and Urban Development pursuant to sections 203 and 211 of the
      National Housing Act.

            (xviii) Principal payments on the Mortgage Loan commenced no more
      than sixty days after the proceeds of the Mortgaged Loan were disbursed.
      The Mortgage Loans are 20 to 30-year fixed rate mortgage loans having an
      original term to maturity of not more than 30 years, with interest payable
      in arrears on the first day of the month. Each Mortgage Note requires a
      monthly payment which is sufficient to fully amortize the original
      principal balance over the original term thereof and to pay interest at
      the related Mortgage Interest Rate. The Mortgage Note does not permit
      negative amortization.

            (xix) There is no proceeding pending or, to the Depositor's
      knowledge, threatened for the total or partial condemnation of the
      Mortgaged Property. The Mortgaged Property is in good repair and is
       undamaged by waste, fire, earthquake or earth movement, windstorm, flood,
      tornado or other casualty, so as to affect adversely the value of the
      Mortgaged Property as security for the Mortgage Loan or the use for which
      the premises were intended.

            (xx) The Mortgage and related Mortgage Note contain customary and
      enforceable provisions such as to render the rights and remedies of the
      holder thereof adequate for the realization against the Mortgaged Property
      of the benefits of the security provided thereby, including (A) in the
      case of a Mortgage designated as a deed of trust, by trustee's sale, and
      (B) otherwise by judicial foreclosure. To the best of the Depositor's
      knowledge, following the date of origination of the Mortgage Loan, the
      Mortgaged Property has not been subject to any bankruptcy proceeding or
      foreclosure proceeding and the Mortgagor has not filed for protection
      under applicable bankruptcy laws. There is no homestead or other exemption
      or right available to the Mortgagor or any other person which would
      interfere with the right to sell the Mortgaged Property at a trustee's
      sale or the right to foreclose the Mortgage.

            (xxi) Other than any Borrowers Protection Plan(R) addendum to the
      Mortgage Note of a BPP Mortgage Loan, the Mortgage Note and Mortgage are
      on forms acceptable to Fannie Mae or Freddie Mac.

            (xxii) The Mortgage Note is not and has not been secured by any
      collateral except the lien of the corresponding Mortgage on the Mortgaged
      Property and the security interest of any applicable security agreement or
      chattel mortgage referred to in (viii) above.

            (xxiii) Each appraisal of the related Mortgaged Property, is in a
      form acceptable to Fannie Mae or Freddie Mac and such appraisal complies
      with the requirements of FIRREA, and was made and signed, prior to the
      approval of the Mortgage Loan application, by a Qualified Appraiser.

            (xxiv) In the event the Mortgage constitutes a deed of trust, a
      trustee, duly qualified under applicable law to serve as such, has been
      properly designated and currently so serves, and no fees or expenses are
      or will become payable by the Trustee to the trustee under the deed of
      trust, except in connection with a trustee's sale after default by the
      Mortgagor.

            (xxv) No Mortgage Loan is a graduated payment mortgage loan, no
      Mortgage Loan has a shared appreciation or other contingent interest
      feature, and no more than 0.00%, 0.00% and 0.19% (by Cut-off Date
      Principal Balance) of the Group 1 Mortgage Loans, Group 2 Mortgage Loans
      and Group 3 Mortgage Loans, respectively, are Buy-Down Mortgage Loans.

            (xxvi) The Mortgagor has received all disclosure materials required
      by applicable law with respect to the making of mortgage loans of the same
      type as the Mortgage Loan and rescission materials required by applicable
      law if the Mortgage Loan is a Refinance Mortgage Loan.

            (xxvii) Each Primary Insurance Policy to which any Mortgage Loan is
      subject will be issued by an insurer acceptable to Fannie Mae or Freddie
      Mac, which insures that portion of the Mortgage Loan in excess of the
      portion of the Appraised Value of the Mortgaged Property required by
      Fannie Mae. All provisions of such Primary Insurance Policy have been and
      are being complied with, such policy is in full force and effect, and all
      premiums due thereunder have been paid. Any Mortgage subject to any such
      Primary Insurance Policy obligates the Mortgagor thereunder to maintain
      such insurance and to pay all premiums and charges in connection therewith
      at least until Loan-to-Value Ratio of such Mortgage Loan is reduced to
      less than 80%. The Mortgage Interest Rate for the Mortgage Loan does not
      include any such insurance premium.

            (xxviii) To the best of the Depositor's knowledge as of the date of
      origination of the Mortgage Loan, (A) the Mortgaged Property is lawfully
      occupied under applicable law, (B) all inspections, licenses and
      certificates required to be made or issued with respect to all occupied
      portions of the Mortgaged Property and, with respect to the use and
      occupancy of the same, including but not limited to certificates of
      occupancy, have been made or obtained from the appropriate authorities and
      (C) no improvement located on or part of the Mortgaged Property is in
      violation of any zoning law or regulation.

            (xxix) The Assignment of Mortgage (except with respect to any
      Mortgage that has been recorded in the name of MERS or its designee) is in
      recordable form and is acceptable for recording under the laws of the
      jurisdiction in which the Mortgaged Property is located.

            (xxx) All payments required to be made prior to the Cut-off Date for
      such Mortgage Loan under the terms of the Mortgage Note have been made and
      no Mortgage Loan has been more than 30 days delinquent more than once in
      the twelve month period immediately prior to the Cut-off Date.

            (xxxi) With respect to each Mortgage Loan, the Depositor or Servicer
      is in possession of a complete Mortgage File except for the documents
      which have been delivered to the Trustee or which have been submitted for
      recording and not yet returned.

            (xxxii) Immediately prior to the transfer and assignment
      contemplated herein, the Depositor was the sole owner and holder of the
      Mortgage Loans. The Mortgage Loans were not assigned or pledged by the
      Depositor and the Depositor had good and marketable title thereto, and the
      Depositor had full right to transfer and sell the Mortgage Loans to the
      Trustee free and clear of any encumbrance, participation interest, lien,
      equity, pledge, claim or security interest and had full right and
       authority subject to no interest or participation in, or agreement with
      any other party to sell or otherwise transfer the Mortgage Loans.

            (xxxiii) Any future advances made prior to the Cut-off Date have
      been consolidated with the outstanding principal amount secured by the
      Mortgage, and the secured principal amount, as consolidated, bears a
      single interest rate and single repayment term. The lien of the Mortgage
      securing the consolidated principal amount is expressly insured as having
      first lien priority by a title insurance policy, an endorsement to the
      policy insuring the mortgagee's consolidated interest or by other title
      evidence acceptable to Fannie Mae and Freddie Mac. The consolidated
       principal amount does not exceed the original principal amount of the
      Mortgage Loan.

            (xxxiv) The Mortgage Loan was underwritten in accordance with the
      applicable Underwriting Guidelines in effect at the time of origination
      with exceptions thereto exercised in a reasonable manner.

            (xxxv) If the Mortgage Loan is secured by a long-term residential
      lease, (1) the lessor under the lease holds a fee simple interest in the
      land; (2) the terms of such lease expressly permit the mortgaging of the
      leasehold estate, the assignment of the lease without the lessor's consent
      and the acquisition by the holder of the Mortgage of the rights of the
      lessee upon foreclosure or assignment in lieu of foreclosure or provide
      the holder of the Mortgage with substantially similar protections; (3) the
      terms of such lease do not (a) allow the termination thereof upon the
      lessee's default without the holder of the Mortgage being entitled to
       receive written notice of, and opportunity to cure, such default, (b)
      allow the termination of the lease in the event of damage or destruction
      as long as the Mortgage is in existence, (c) prohibit the holder of the
      Mortgage from being insured (or receiving proceeds of insurance) under the
      hazard insurance policy or policies relating to the Mortgaged Property or
      (d) permit any increase in the rent other than pre-established increases
      set forth in the lease; (4) the original term of such lease is not less
      than 15 years; (5) the term of such lease does not terminate earlier than
      five years after the maturity date of the Mortgage Note; and (6) the
      Mortgaged Property is located in a jurisdiction in which the use of
      leasehold estates in transferring ownership in residential properties is a
      widely accepted practice.

            (xxxvi) No more than 1.50%, 1.70% and 0.15% (by Cut-off Date
      Principal Balance) of the Group 1 Mortgage Loans, Group 2 Mortgage Loans
      and Group 3 Mortgage Loans, respectively, are secured by long-term
      residential leases.

            (xxxvii) The Mortgaged Property is located in the state identified
      in the Mortgage Loan Schedule and consists of a parcel of real property
      with a detached single family residence erected thereon, or a two- to
      four-family dwelling, or an individual condominium unit, or an individual
      unit in a planned unit development, or, in the case of Mortgage Loans
      secured by Co-op Shares, leases or occupancy agreements; provided,
      however, that any condominium project or planned unit development
      generally conforms with the applicable Underwriting Guidelines regarding
      such dwellings, and no residence or dwelling is a mobile home or a
      manufactured dwelling.

            (xxxviii) The Depositor used no adverse selection procedures in
      selecting the Mortgage Loan for inclusion in the Trust Estate.

            (xxxix) Each Mortgage Loan is a "qualified mortgage" within the
      meaning of Section 860G(a)(3) of the Code.

            (xl) With respect to each Mortgage where a lost note affidavit has
      been delivered to the Trustee in place of the related Mortgage Note, the
      related Mortgage Note is no longer in existence.

            (xli) No Mortgage Loan is a "high cost" loan as defined under any
      federal, state or local law applicable to such Mortgage Loan at the time
      of its origination.

            (xlii) No Mortgage Loan is a High Cost Loan or Covered Loan, as
      applicable (as such terms are defined in the then-current S&P's LEVELS(R)
      Glossary which is now Version 5.7, Appendix E) and no Mortgage Loan
      originated on or after October 1, 2002 through March 6, 2003 is governed
      by the Georgia Fair Lending Act.

            (xliii) No Mortgage Loan is subject to the provisions of the Home
      Ownership and Equity Protection Act of 1994, as amended.

            (xliv) No Group 2 Mortgage Loan is a "high cost home," "covered,"
      "high risk home" or "predatory" loan under any applicable state, federal
      or local law (or a similarly classified loan using different terminology
      under a law imposing heightened regulatory scrutiny or additional legal
      liability for residential mortgage loans having high interest rates,
      points and/or fees).

            (xlv) With respect to each Group 2 Mortgage Loan, no borrower
      obtained a prepaid single-premium credit life, credit disability, credit
      unemployment or credit property insurance policy in connection with the
      origination of the Mortgage Loan.

            (xlvi) No Group 2 Mortgage Loan provides for the payment of a
      prepayment premium.

            (xlvii) No Group 2 Mortgage Loan originated on or after August 1,
      2004 requires the borrower to submit to arbitration to resolve any dispute
      arising out of or relating in any way to the mortgage loan transaction.

            (xlviii) As of the date of origination, no Group 2 Mortgage Loan had
      a principal balance in excess of Freddie Mac's dollar amount limits for
      conforming one- to four-family mortgage loans.

            (xlix) With respect to each Group 2 Mortgage Loan, the borrower was
      offered mortgage loan products for which the borrower qualified.

            (l) The methodology used in underwriting the extension of credit for
      each Group 2 Mortgage Loan employs objective mathematical principles which
      relate the borrower's income, assets and liabilities to the proposed
      payment and such underwriting methodology does not rely on the extent of
      the borrower's equity in the collateral as the principal determining
      factor in approving such credit extension. Such underwriting methodology
      confirmed that at the time of origination (application/approval) the
      borrower had the reasonable ability to make timely payments on the
      Mortgage Loan.

            (li) No borrower under a Group 2 Mortgage Loan was charged "points
      and fees" in an amount greater than (a) $1,000 or (b) 5% of the Cut-off
      Date Principal Balance of such Mortgage Loan, whichever is greater. For
      purposes of this representation, "points and fees" (x) include
      origination, underwriting, broker and finder's fees and charges that the
      lender imposed as a condition of making the Mortgage Loan, whether they
      are paid to the lender or a third party; and (y) exclude bona fide
      discount points, fees paid for actual services rendered in connection with
      the origination of the mortgage (such as attorneys' fees, notaries fees
      and fees paid for property appraisals, credit reports, surveys, title
      examinations and extracts, flood and tax certifications, and home
      inspections); the cost of mortgage insurance or credit-risk price
      adjustments; the costs of title, hazard, and flood insurance policies;
      state and local transfer taxes or fees; escrow deposits for the future
      payment of taxes and insurance premiums; and other miscellaneous fees and
      charges that, in total, do not exceed 0.25 percent of the loan amount.

            (lii) All points, fees and charges (including finance charges),
      whether or not financed, assessed, collected or to be collected in
      connection with the origination and servicing of each Group 2 Mortgage
      Loan, have been disclosed in writing to the borrower in accordance with
      applicable state and federal law and regulation.

            Notwithstanding the foregoing, no representations or warranties are
made by the Depositor as to the environmental condition of any Mortgaged
Property; the absence, presence or effect of hazardous wastes or hazardous
substances on any Mortgaged Property; any casualty resulting from the presence
or effect of hazardous wastes or hazardous substances on, near or emanating from
any Mortgaged Property; the impact on Certificateholders of any environmental
condition or presence of any hazardous substance on or near any Mortgaged
Property; or the compliance of any Mortgaged Property with any environmental
laws, nor is any agent, Person or entity otherwise affiliated with the Depositor
authorized or able to make any such representation, warranty or assumption of
liability relative to any Mortgaged Property. In addition, no representations or
warranties are made by the Depositor with respect to the absence or effect of
fraud in the origination of any Mortgage Loan.

            It is understood and agreed that the representations and warranties
set forth in this Section 2.04 shall survive delivery of the respective Mortgage
Files to the Trustee or the Custodian and shall inure to the benefit of the
Trustee, notwithstanding any restrictive or qualified endorsement or assignment.

            Upon discovery by any of the Depositor, the Servicer, the Trustee or
the Custodian that any of the representations and warranties set forth in this
Section 2.04 is not accurate (referred to herein as a "breach") and that such
breach (in the case of the representations and warranties set forth in clauses
(i) through (xlii) of this Section 2.04) materially and adversely affects the
interests of the Certificateholders in the related Mortgage Loan, the party
discovering such breach shall give prompt written notice to the other parties
(any Custodian being so obligated under a custodial agreement); provided that
any such breach that causes the Mortgage Loan not to be a "qualified mortgage"
within the meaning of Section 860G(a)(3) of the Code shall be deemed to
materially and adversely affect the interests of the Certificateholders. Within
90 days of its discovery or its receipt of notice of any such breach, the
Depositor shall cure such breach in all material respects or shall either (i)
repurchase the Mortgage Loan or any property acquired in respect thereof from
the Trustee at a price equal to the Repurchase Price or (ii) if within two years
of the Closing Date, substitute for such Mortgage Loan in the manner described
in Section 2.02; provided that if the breach would cause the Mortgage Loan to be
other than a "qualified mortgage" as defined in Section 860G(a)(3) of the Code,
any such repurchase or substitution must occur within 90 days from the date the
breach was discovered. In addition to the foregoing, if a breach of the
representation set forth in clause (vi) or (xlii) of this Section 2.04 occurs as
a result of a violation of an applicable predatory or abusive lending law, the
Depositor shall reimburse the Trust for all costs or damages incurred by the
Trust as a result of the violation of such law (such amount, the "Reimbursement
Amount"). The Repurchase Price of any repurchase described in this paragraph,
the Substitution Adjustment Amount, if any, and any Reimbursement Amount shall
be deposited in the Servicer Custodial Account. It is understood and agreed
that, except with respect to the second preceding sentence, the obligation of
the Depositor to repurchase or substitute for any Mortgage Loan or Mortgaged
Property as to which such a breach has occurred and is continuing shall
constitute the sole remedy respecting such breach available to
Certificateholders, or to the Trustee on behalf of Certificateholders, and such
obligation shall survive until termination of the Trust hereunder.

             Section 2.05 Designation of Interests in the REMICs. The Depositor
hereby designates the Classes of Senior Certificates (other than the
Exchangeable Certificates and the Class 3-A-R Certificate and other than the
right of the Class 3-A-11 and Class 3-A-16 Certificates to receive the Yield
Maintenance Agreement Payments), the Classes of Subordinate Certificates as
"regular interests" and the Class R-U Interest as the single class of "residual
interest" in the Upper-Tier REMIC for the purposes of Code Sections 860G(a)(1)
and 860G(a)(2), respectively. The Depositor hereby further designates (i) the
Uncertificated Middle-Tier Interests as classes of "regular interests" and the
Class R-M Interest as the single class of "residual interest" in the Middle-Tier
REMIC and (ii) the Uncertificated Lower-Tier Interests as classes of "regular
interests" and the Class R-L Interest as the single class of "residual interest"
in the Lower-Tier REMIC for the purposes of Code Sections 860G(a)(1) and
860G(a)(2), respectively.

            Section 2.06 Designation of Start-up Day. The Closing Date is hereby
designated as the "start-up day" of each of the Upper-Tier REMIC, Middle-Tier
REMIC and Lower-Tier REMIC within the meaning of Section 860G(a)(9) of the Code.

            Section 2.07 REMIC Certificate Maturity Date. Solely for purposes of
satisfying Section 1.860G-1(a)(4)(iii) of the Treasury Regulations, the "latest
possible maturity date" of the regular interests in the Upper-Tier REMIC,
Middle-Tier REMIC and Lower-Tier REMIC is April 25, 2037.

            Section 2.08 Execution and Delivery of Certificates. (a) The Trustee
(i) in exchange for the Mortgage Loans and all other assets included in the
definition of "Trust Estate," receipt of which is hereby acknowledged,
acknowledges the issuance of and hereby declares that it holds the
Uncertificated Lower-Tier Interests on behalf of the Middle-Tier REMIC and the
Certificateholders, (ii) in exchange for the Uncertificated Lower-Tier
Interests, acknowledges the issuance of and hereby declares that it holds the
Uncertificated Middle-Tier Interests on behalf of the Upper-Tier REMIC and the
Certificateholders and (iii) in exchange for the Uncertificated Middle-Tier
Interests, has executed and delivered to or upon the order of the Depositor,
Certificates (other than the Exchangeable Certificates) in authorized
Denominations which, together with the Uncertificated Middle-Tier Interests and
the Uncertificated Lower-Tier Interests, evidence ownership of the entire Trust
Estate.

             (b) In addition, the Trustee shall, from time to time as requested
by beneficial owners of Exchangeable REMIC Certificates or Exchangeable
Certificates pursuant to Section 5.10(b), exchange Exchangeable REMIC
Certificates for Exchangeable Certificates and vice versa.

                                  ARTICLE III

                          ADMINISTRATION AND SERVICING
                                OF MORTGAGE LOANS

            Section 3.01 Servicer to Service Mortgage Loans. For and on behalf
of the Certificateholders, the Servicer shall service and administer the
Mortgage Loans, all in accordance with the terms of this Agreement, Customary
Servicing Procedures, applicable law and the terms of the Mortgage Notes and
Mortgages. In connection with such servicing and administration, the Servicer
shall have full power and authority, acting alone and/or through Subservicers as
provided in Section 3.02, to do or cause to be done any and all things that it
may deem necessary or desirable in connection with such servicing and
administration including, but not limited to, the power and authority, subject
to the terms hereof, (a) to execute and deliver, on behalf of the
Certificateholders and the Trustee, customary consents or waivers and other
instruments and documents, (b) to consent, with respect to the Mortgage Loans it
services, to transfers of any Mortgaged Property and assumptions of the Mortgage
Notes and related Mortgages (but only in the manner provided in this Agreement),
(c) to collect any Insurance Proceeds and other Liquidation Proceeds relating to
the Mortgage Loans it services, and (d) to effectuate foreclosure or other
conversion of the ownership of the Mortgaged Property securing any Mortgage Loan
it services. The Servicer shall represent and protect the interests of the Trust
in the same manner as it protects its own interests in mortgage loans in its own
portfolio in any claim, proceeding or litigation regarding a Mortgage Loan and
shall not make or permit any modification, waiver or amendment of any term of
any Mortgage Loan, except as provided pursuant to Section 3.21. Without limiting
the generality of the foregoing, the Servicer, in its own name or in the name of
any Subservicer or the Depositor and the Trustee, is hereby authorized and
empowered by the Depositor and the Trustee, when the Servicer or any
Subservicer, as the case may be, believes it appropriate in its reasonable
judgment, to execute and deliver, on behalf of the Trustee, the Depositor, the
Certificateholders or any of them, any and all instruments or agreements of
satisfaction, cancellation, default, assumption, modification, discharge,
partial or full release, and all other comparable instruments and agreements,
with respect to the Mortgage Loans it services, and with respect to the related
Mortgaged Properties held for the benefit of the Certificateholders. To the
extent that the Servicer is not permitted to execute and deliver such documents
pursuant to the preceding sentence, the Servicer shall prepare and deliver to
the Depositor and/or the Trustee such documents requiring execution and delivery
by either or both of them as are necessary or appropriate to enable the Servicer
to service and administer the Mortgage Loans it services. Upon receipt of such
documents, the Depositor and/or the Trustee, upon the direction of the Servicer,
shall promptly execute such documents and deliver them to the Servicer.
Alternatively, upon the request of the Servicer, the Trustee shall execute and
deliver to the Servicer any additional powers of attorney and other documents
prepared by the Servicer that are reasonably necessary or appropriate to enable
the Servicer to carry out its servicing and administrative duties under this
Agreement.

            In accordance with the standards of the preceding paragraph, the
Servicer shall advance or cause to be advanced funds as necessary for the
purpose of effecting the payment of taxes and assessments on the Mortgaged
Properties relating to the Mortgage Loans it services, which Servicing Advances
shall be reimbursable in the first instance from related collections from the
Mortgagors pursuant to Section 3.09, and further as provided in Section 3.11.
The costs incurred by the Servicer, if any, in effecting the timely payments of
taxes and assessments on the Mortgaged Properties and related insurance premiums
shall not, for the purpose of calculating monthly distributions to the
Certificateholders, be added to the Stated Principal Balances of the related
Mortgage Loans, notwithstanding that the terms of such Mortgage Loans so permit.

            The relationship of the Servicer (and of any successor to the
Servicer as servicer under this Agreement) to the Trustee under this Agreement
is intended by the parties to be that of an independent contractor and not that
of a joint venturer, partner or agent.

            Section 3.02 Subservicing; Enforcement of the Obligations of
Servicer. (a) The Servicer may arrange for the subservicing of any Mortgage Loan
it services by a Subservicer pursuant to a Subservicing Agreement; provided,
however, that such subservicing arrangement and the terms of the related
Subservicing Agreement must provide for the servicing of such Mortgage Loan in a
manner consistent with the servicing arrangements contemplated hereunder.
Notwithstanding the provisions of any Subservicing Agreement, any of the
provisions of this Agreement relating to agreements or arrangements between the
Servicer and a Subservicer or reference to actions taken through a Subservicer
or otherwise, the Servicer shall remain obligated and liable to the Depositor,
the Trustee and the Certificateholders for the servicing and administration of
the Mortgage Loans it services in accordance with the provisions of this
Agreement without diminution of such obligation or liability by virtue of such
Subservicing Agreements or arrangements or by virtue of indemnification from the
Subservicer and to the same extent and under the same terms and conditions as if
the Servicer alone were servicing and administering those Mortgage Loans. All
actions of each Subservicer performed pursuant to the related Subservicing
Agreement shall be performed as agent of the Servicer with the same force and
effect as if performed directly by the Servicer.

            (b) For purposes of this Agreement, the Servicer shall be deemed to
have received any collections, recoveries or payments with respect to the
Mortgage Loans it services that are received by a Subservicer regardless of
whether such payments are remitted by the Subservicer to the Servicer.

            (c) As part of its servicing activities hereunder, the Servicer, for
the benefit of the Trustee and the Certificateholders, shall use its best
reasonable efforts to enforce the obligations of each Subservicer engaged by the
Servicer under the related Subservicing Agreement, to the extent that the
non-performance of any such obligation would have a material and adverse effect
on a Mortgage Loan. Such enforcement, including, without limitation, the legal
prosecution of claims, termination of Subservicing Agreements and the pursuit of
other appropriate remedies, shall be in such form and carried out to such an
extent and at such time as the Servicer, in its good faith business judgment,
would require were it the owner of the related Mortgage Loans. The Servicer
shall pay the costs of such enforcement at its own expense, and shall be
reimbursed therefor only (i) from a general recovery resulting from such
enforcement to the extent, if any, that such recovery exceeds all amounts due in
respect of the related Mortgage Loan or (ii) from a specific recovery of costs,
expenses or attorneys fees against the party against whom such enforcement is
directed.

            (d) Any Subservicing Agreement entered into by the Servicer shall
provide that it may be assumed or terminated by the Trustee, if the Trustee has
assumed the duties of the Servicer, or any successor Servicer, at the Trustee's
or successor Servicer's option, as applicable, without cost or obligation to the
assuming or terminating party or the Trust Estate, upon the assumption by such
party of the obligations of the Servicer pursuant to Section 8.05.

            (e) Notwithstanding the foregoing, to the extent the Servicer
engages any affiliate or third party vendor, including any Subservicer, in
connection with the performance of any of its duties under this Agreement, the
Servicer shall immediately notify the Depositor in writing of such engagement.
To the extent the Depositor notifies the Servicer and the Trustee that it has
determined that any such affiliate, third party vendor or Subservicer is a
Servicing Function Participant, the Servicer shall cause such Servicing Function
Participant to prepare a separate assessment and attestation report, as
contemplated by Section 3.19 of this Agreement and deliver such report to the
Trustee as set forth in Section 3.22 of this Agreement. In addition, to the
extent the Depositor notifies the Servicer and the Trustee that it has
determined that any such Servicing Function Participant would be a "servicer"
within the meaning of Item 1101 of Regulation AB and meets the criteria in Item
1108(a)(2)(i), (ii) or (iii) of Regulation AB (an "Additional Servicer"), the
Servicer shall cause such Additional Servicer to prepare a separate compliance
statement as contemplated by Section 3.18 of this Agreement and deliver such
statement to the Trustee as set forth in Section 3.22 of this Agreement. In
addition, if the Depositor determines any such Servicing Function Participant
would be a "servicer" within the meaning of Item 1101 of Regulation AB, the
Servicer shall cause such Servicing Function Participant to provide the
Depositor and the Trustee the information required by Section 1108(b) and
1108(c) of Regulation AB within two Business Days following such engagement. To
the extent the Servicer terminates any such Servicing Function Participant that
the Depositor has determined is a "servicer" within the meaning of Item 1101 of
Regulation AB, the Servicer shall provide the Depositor and the Trustee the
information required to enable the Trustee to accurately and timely report such
event under Item 6.02 of Form 8-K (if the Trust's Exchange Act reporting
requirements have not been suspended pursuant to Section 15(d) of the Exchange
Act as set forth in 3.22(g)).

             Section 3.03 Fidelity Bond; Errors and Omissions Insurance. The
Servicer shall maintain, at its own expense, a blanket fidelity bond and an
errors and omissions insurance policy, with broad coverage on all officers,
employees or other persons acting in any capacity requiring such persons to
handle funds, money, documents or papers relating to the Mortgage Loans it
services. These policies must insure the Servicer against losses resulting from
dishonest or fraudulent acts committed by the Servicer's personnel, any
employees of outside firms that provide data processing services for the
Servicer, and temporary contract employees or student interns. Such fidelity
bond shall also protect and insure the Servicer against losses in connection
with the release or satisfaction of a Mortgage Loan without having obtained
payment in full of the indebtedness secured thereby. No provision of this
Section 3.03 requiring such fidelity bond and errors and omissions insurance
shall diminish or relieve the Servicer from its duties and obligations as set
forth in this Agreement. The minimum coverage under any such bond and insurance
policy shall be at least equal to the corresponding amounts required by Fannie
Mae in the Fannie Mae Servicing Guide or by Freddie Mac in the Freddie Mac
Sellers' & Servicers' Guide, as amended or restated from time to time, or in an
amount as may be permitted to the Servicer by express waiver of Fannie Mae or
Freddie Mac.

            Section 3.04 Access to Certain Documentation. The Servicer shall
provide to the OCC, the OTS, the FDIC and to comparable regulatory authorities
supervising Holders of Certificates and the examiners and supervisory agents of
the OCC, the OTS, the FDIC and such other authorities, access to the
documentation required by applicable regulations of the OCC, the OTS, the FDIC
and such other authorities with respect to the Mortgage Loans. Such access shall
be afforded upon reasonable and prior written request and during normal business
hours at the offices designated by the Servicer; provided that the Servicer
shall be entitled to be reimbursed by each such Certificateholder for actual
expenses incurred by the Servicer in providing such reports and access. Nothing
in this Section 3.04 shall limit the obligation of the Servicer to observe any
applicable law and the failure of the Servicer to provide access as provided in
this Section 3.04 as a result of such obligation shall not constitute a breach
of this Section 3.04.

            Section 3.05 Maintenance of Primary Insurance Policy; Claims;
Collections of BPP Mortgage Loan Payments. (a) With respect to each Mortgage
Loan with a Loan-to-Value Ratio in excess of 80% or such other Loan-to-Value
Ratio as may be required by law that was originated with a Primary Insurance
Policy, the Servicer shall, without any cost to the Trust Estate, maintain or
cause the Mortgagor to maintain in full force and effect a Primary Insurance
Policy insuring that portion of the Mortgage Loan in excess of a percentage in
conformity with Fannie Mae requirements. The Servicer shall pay or shall cause
the Mortgagor to pay the premium thereon on a timely basis, at least until the
Loan-to-Value Ratio of such Mortgage Loan is reduced to 80% or such other
Loan-to-Value Ratio as may be required by law. If such Primary Insurance Policy
is terminated, the Servicer shall obtain from another insurer a comparable
replacement policy, with a total coverage equal to the remaining coverage of
such terminated Primary Insurance Policy. If the insurer shall cease to be an
insurer acceptable to Fannie Mae or Freddie Mac, the Servicer shall notify the
Trustee in writing, it being understood that the Servicer shall not have any
responsibility or liability for any failure to recover under the Primary
Insurance Policy for such reason. If the Servicer determines that recoveries
under the Primary Insurance Policy are jeopardized by the financial condition of
the insurer, the Servicer shall obtain from another insurer which meets the
requirements of this Section 3.05 a replacement insurance policy. The Servicer
shall not take any action that would result in noncoverage under any applicable
Primary Insurance Policy of any loss that, but for the actions of the Servicer,
would have been covered thereunder. In connection with any assumption or
substitution agreement entered into or to be entered into pursuant to Section
3.13, the Servicer shall promptly notify the insurer under the related Primary
Insurance Policy, if any, of such assumption or substitution of liability in
accordance with the terms of such Primary Insurance Policy and shall take all
actions which may be required by such insurer as a condition to the continuation
of coverage under such Primary Insurance Policy. If such Primary Insurance
Policy is terminated as a result of such assumption or substitution of
liability, the Servicer shall obtain a replacement Primary Insurance Policy as
provided above.

            In connection with its activities as servicer, the Servicer agrees
to prepare and present, on behalf of itself, the Trustee and the
Certificateholders, claims to the insurer under any Primary Insurance Policy in
a timely fashion in accordance with the terms of such Primary Insurance Policy
and, in this regard, to take such action as shall be necessary to permit
recovery under any Primary Insurance Policy respecting a defaulted Mortgage
Loan. Pursuant to Section 3.09(a), any amounts collected by the Servicer under
any Primary Insurance Policy shall be deposited in the related Escrow Account,
subject to withdrawal pursuant to Section 3.09(b).

            The Servicer will comply with all provisions of applicable state and
federal law relating to the cancellation of, or collection of premiums with
respect to, Primary Mortgage Insurance, including, but not limited to, the
provisions of the Homeowners Protection Act of 1998, and all regulations
promulgated thereunder, as amended from time to time.

            (b) The Servicer shall take all actions necessary to collect, on
behalf of the Trust, any BPP Mortgage Loan Payments required to be made to the
Trust pursuant to the Mortgage Loan Purchase Agreement.

            Section 3.06 Rights of the Depositor and the Trustee in Respect of
the Servicer. The Depositor may, but is not obligated to, enforce the
obligations of the Servicer hereunder and may, but is not obligated to, perform,
or cause a designee to perform, any defaulted obligation of the Servicer
hereunder and in connection with any such defaulted obligation to exercise the
related rights of the Servicer hereunder; provided that the Servicer shall not
be relieved of any of its obligations hereunder by virtue of such performance by
the Depositor or its designee. Neither the Trustee nor the Depositor shall have
any responsibility or liability for any action or failure to act by the Servicer
nor shall the Trustee or the Depositor be obligated to supervise the performance
of the Servicer hereunder or otherwise.

            Any Subservicing Agreement that may be entered into and any
transactions or services relating to the Mortgage Loans involving a Subservicer
in its capacity as such shall be deemed to be between the Subservicer and the
Servicer alone, and the Trustee and Certificateholders shall not be deemed
parties thereto and shall have no claims, rights, obligations, duties or
liabilities with respect to the Subservicer except as set forth in Section 3.07.
The Servicer shall be solely liable for all fees owed by it to any Subservicer,
irrespective of whether the Servicer's compensation pursuant to this Agreement
is sufficient to pay such fees.

            Section 3.07 Trustee to Act as Servicer. If the Servicer shall for
any reason no longer be the Servicer hereunder (including by reason of an Event
of Default), the Trustee shall within 90 days of such time, assume, if it so
elects, or shall appoint a successor Servicer to assume, all of the rights and
obligations of the Servicer hereunder arising thereafter (except that the
Trustee shall not be (a) liable for losses of the Servicer pursuant to Section
3.12 or any acts or omissions of the predecessor Servicer hereunder, (b)
obligated to make Advances if it is prohibited from doing so by applicable law
or (c) deemed to have made any representations and warranties of the Servicer
hereunder). Any such assumption shall be subject to Sections 7.02 and 8.05. If
the Servicer shall for any reason no longer be the Servicer (including by reason
of any Event of Default), the Trustee or the successor Servicer may elect to
succeed to any rights and obligations of the Servicer under each Subservicing
Agreement or may terminate each Subservicing Agreement. If it has elected to
assume the Subservicing Agreement, the Trustee or the successor Servicer shall
be deemed to have assumed all of the Servicer's interest therein and to have
replaced the Servicer as a party to any Subservicing Agreement entered into by
the Servicer as contemplated by Section 3.02 to the same extent as if the
Subservicing Agreement had been assigned to the assuming party except that the
Servicer shall not be relieved of any liability or obligations under any such
Subservicing Agreement.

            The Servicer that is no longer the Servicer hereunder shall, upon
request of the Trustee, but at the expense of such predecessor Servicer, deliver
to the assuming party all documents and records relating to each Subservicing
Agreement or substitute servicing agreement and the Mortgage Loans then being
serviced thereunder and an accounting of amounts collected or held by it and
otherwise use its best efforts to effect the orderly and efficient transfer of
such substitute Subservicing Agreement to the assuming party. The Trustee shall
be entitled to be reimbursed from the predecessor Servicer (or the Trust if the
predecessor Servicer is unable to fulfill its obligations hereunder) for all
Servicing Transfer Costs.

            Section 3.08 Collection of Mortgage Loan Payments; Servicer
Custodial Account; Certificate Account; Reserve Funds; Posted Collateral Account
and Yield Maintenance Agreements. (a) Continuously from the date hereof until
the principal and interest on all Mortgage Loans are paid in full, the Servicer
will proceed diligently, in accordance with this Agreement, to collect all
payments due under each of the Mortgage Loans it services when the same shall
become due and payable. Further, the Servicer will in accordance with all
applicable law and Customary Servicing Procedures ascertain and estimate taxes,
assessments, fire and hazard insurance premiums, mortgage insurance premiums and
all other charges with respect to the Mortgage Loans it services that, as
provided in any Mortgage, will become due and payable to the end that the
installments payable by the Mortgagors will be sufficient to pay such charges as
and when they become due and payable. Consistent with the foregoing, the
Servicer may in its discretion (i) waive any late payment charge or any
prepayment charge or penalty interest in connection with the prepayment of a
Mortgage Loan it services and (ii) extend the due dates for payments due on a
Mortgage Note for a period not greater than 120 days; provided, however, that
the Servicer cannot extend the maturity of any such Mortgage Loan past the date
on which the final payment is due on the latest maturing Mortgage Loan as of the
Cut-off Date. In the event of any such arrangement, the Servicer shall make
Periodic Advances on the related Mortgage Loan in accordance with the provisions
of Section 3.20 during the scheduled period in accordance with the amortization
schedule of such Mortgage Loan without modification thereof by reason of such
arrangements. The Servicer shall not be required to institute or join in
litigation with respect to collection of any payment (whether under a Mortgage,
Mortgage Note or otherwise or against any public or governmental authority with
respect to a taking or condemnation) if it reasonably believes that enforcing
the provision of the Mortgage or other instrument pursuant to which such payment
is required is prohibited by applicable law.

            (b) The Servicer shall establish and maintain the Servicer Custodial
Account. The Servicer shall deposit or cause to be deposited into the Servicer
Custodial Account, all on a daily basis within one Business Day of receipt,
except as otherwise specifically provided herein, the following payments and
collections remitted by Subservicers or received by the Servicer in respect of
the Mortgage Loans subsequent to the Cut-off Date (other than in respect of
principal and interest due on the Mortgage Loans on or before the Cut-off Date)
and the following amounts required to be deposited hereunder with respect to the
Mortgage Loans it services:

            (i) all payments on account of principal of the Mortgage Loans,
      including Principal Prepayments;

            (ii) all payments on account of interest on the Mortgage Loans, net
      of the Servicing Fee;

            (iii) (A) all Insurance Proceeds and Liquidation Proceeds, other
      than Insurance Proceeds to be (1) applied to the restoration or repair of
      the Mortgaged Property, (2) released to the Mortgagor in accordance with
      Customary Servicing Procedures or (3) required to be deposited to an
      Escrow Account pursuant to Section 3.09(a), and other than any Excess
      Proceeds and (B) any Insurance Proceeds released from an Escrow Account
      pursuant to Section 3.09(b)(iv);

            (iv) any amount required to be deposited by the Servicer pursuant to
      Section 3.08(d) in connection with any losses on Permitted Investments
      with respect to the Servicer Custodial Account;

            (v) any amounts required to be deposited by the Servicer pursuant to
      Section 3.14;

            (vi) all Repurchase Prices, all Substitution Adjustment Amounts and
      all Reimbursement Amounts, to the extent received by the Servicer;

            (vii) Periodic Advances made by the Servicer pursuant to Section
      3.20 and any Compensating Interest;

            (viii) any Recoveries;

            (ix) any Buy-Down Funds required to be deposited pursuant to Section
      3.23; and

            (x) any other amounts required to be deposited hereunder.

            The foregoing requirements for deposits to the Servicer Custodial
Account by the Servicer shall be exclusive it being understood and agreed that,
without limiting the generality of the foregoing, Ancillary Income need not be
deposited by the Servicer. If the Servicer shall deposit in the Servicer
Custodial Account any amount not required to be deposited, it may at any time
withdraw or direct the institution maintaining the Servicer Custodial Account to
withdraw such amount from the Servicer Custodial Account, any provision herein
to the contrary notwithstanding. The Servicer Custodial Account may contain
funds that belong to one or more trust funds created for mortgage pass-through
certificates of other series and may contain other funds respecting payments on
mortgage loans belonging to the Servicer or serviced by the Servicer on behalf
of others; provided that such commingling of funds shall not be permitted at any
time during which Fitch's senior long-term unsecured debt rating of Bank of
America is below "A." Notwithstanding such commingling of funds, the Servicer
shall keep records that accurately reflect the funds on deposit in the Servicer
Custodial Account that have been identified by it as being attributable to the
Mortgage Loans it services. The Servicer shall maintain adequate records with
respect to all withdrawals made pursuant to this Section 3.08. All funds
required to be deposited in the Servicer Custodial Account shall be held in
trust for the Certificateholders until withdrawn in accordance with Section
3.11.

            (c) The Trustee shall establish and maintain, on behalf of the
Certificateholders, the Certificate Account, which shall be deemed to consist of
three sub-accounts. The Trustee shall, promptly upon receipt, deposit in the
Certificate Account and retain therein the following:

            (i) the aggregate amount remitted by the Servicer to the Trustee
      pursuant to Section 3.11(a)(viii);

            (ii) any amount paid by the Trustee pursuant to Section 3.08(d) in
      connection with any losses on Permitted Investments with respect to the
      Certificate Account; and

            (iii) any other amounts deposited hereunder which are required to be
      deposited in the Certificate Account.

            If the Servicer shall remit any amount not required to be remitted,
it may at any time direct the Trustee to withdraw such amount from the
Certificate Account, any provision herein to the contrary notwithstanding. Such
direction may be accomplished by delivering an Officer's Certificate to the
Trustee which describes the amounts deposited in error in the Certificate
Account. All funds required to be deposited in the Certificate Account shall be
held by the Trustee in trust for the Certificateholders until disbursed in
accordance with this Agreement or withdrawn in accordance with Section 3.11. In
no event shall the Trustee incur liability for withdrawals from the Certificate
Account at the direction of the Servicer.

            (d) Each institution at which the Servicer Custodial Account or the
Certificate Account is maintained shall invest the funds therein as directed in
writing by the Servicer, in the case of the Servicer Custodial Account, or the
Trustee, in the case of the Certificate Account, in Permitted Investments, which
shall mature not later than (i) in the case of the Servicer Custodial Account,
the Business Day next preceding the related Remittance Date (except that if such
Permitted Investment is an obligation of the institution that maintains such
account, then such Permitted Investment shall mature not later than such
Remittance Date) and (ii) in the case of the Certificate Account, the Business
Day next preceding the Distribution Date (except that if such Permitted
Investment is an obligation of the institution that maintains such account, then
such Permitted Investment shall mature not later than such Distribution Date)
and, in each case, shall not be sold or disposed of prior to its maturity. All
such Permitted Investments shall be made in the name of the Trustee, for the
benefit of the Certificateholders. All Servicer Custodial Account Reinvestment
Income shall be for the benefit of the Servicer as part of its Servicing
Compensation and shall be retained by it monthly as provided herein. All income
or gain (net of any losses) realized from any such investment of funds on
deposit in the Certificate Account shall be for the benefit of the Trustee as
additional compensation and shall be retained by it monthly as provided herein.
The amount of any losses realized in the Servicer Custodial Account or the
Certificate Account incurred in any such account in respect of any such
investments shall promptly be deposited by the Servicer in the Servicer
Custodial Account or by the Trustee in the Certificate Account, as applicable.

            (e) The Servicer shall give notice to the Trustee of any proposed
change of the location of the Servicer Custodial Account maintained by the
Servicer not later than 30 days and not more than 45 days prior to any change
thereof. The Trustee shall give notice to the Servicer, each Rating Agency and
the Depositor of any proposed change of the location of the Certificate Account
not later than 30 days after and not more than 45 days prior to any change
thereof. The creation of the Servicer Custodial Account shall be evidenced by a
certification substantially in the form of Exhibit F hereto. A copy of such
certification shall be furnished to the Trustee.

            (f) The Trustee shall designate the Upper-Tier Certificate
Sub-Account as a sub-account of the Certificate Account. On each Distribution
Date (other than the Final Distribution Date, if such Final Distribution Date is
in connection with a purchase of the assets of the Trust Estate by the
Depositor), the Trustee shall, from funds available on deposit in the
Certificate Account, be deemed to deposit into the Upper-Tier Certificate
Sub-Account, the Lower-Tier Distribution Amount.

             (g) (i) The Trustee shall establish and maintain the Class 3-A-11
Reserve Fund and the Class 3-A-16 Reserve Fund, held in trust for the benefit of
the Holders of the Class 3-A-11 and Class 3-A-16 Certificates, respectively. The
Trustee shall deposit in the applicable Reserve Fund on the date received by it
the related Yield Maintenance Agreement Payment, if any, received from the
Counterparty for the related Distribution Date. Funds on deposit in the Reserve
Funds shall remain uninvested. On each Distribution Date, the Trustee shall
withdraw from the applicable Reserve Fund the related Yield Maintenance
Agreement Payment, if any, received in respect of such Distribution Date and
shall distribute such amount to the Class 3-A-11 or Class 3-A-16 Certificates,
as the case may be.

            (ii) The Trustee shall account for the Reserve Funds and the Yield
      Maintenance Agreements and the rights with respect thereto as assets of
      the Grantor Trust and not as assets of any REMIC created pursuant to this
      Agreement. The beneficial owners of the Class 3-A-11 Yield Maintenance
      Agreement and the Class 3-A-11 Reserve Fund are the Holders of the Class
      3-A-11 Certificates and the beneficial owners of the Class 3-A-16 Yield
      Maintenance Agreement and the Class 3-A-16 Reserve Fund are the Holders of
      the Class 3-A-16 Certificates.

            (iii) Any amounts in the applicable Reserve Fund paid by the Trustee
      pursuant to this Section 3.08(g) to the Class 3-A-11 and Class 3-A-16
      Certificates shall be accounted for by the Trustee as amounts paid to the
      Class 3-A-11 and Class 3-A-16 Certificates, respectively, from the Grantor
      Trust. In addition, the Trustee shall account for the right of the Class
      3-A-11 and Class 3-A-16 Certificates to receive amounts from the
      applicable Reserve Fund as rights in limited recourse interest rate cap
      contracts written by the Counterparty in favor of the Class 3-A-11 and
      Class 3-A-16 Certificates.

             (h) For federal tax return and information reporting purposes, the
right of the Holders of the Class 3-A-11 and Class 3-A-16 Certificates to
receive payments under the applicable Yield Maintenance Agreement shall be
assigned a value of zero as of the Closing Date.

            (i) For so long as the Trustee is required to file any report with
the Securities and Exchange Commission pursuant to Section 3.22, the Sponsor
shall furnish to the Trustee, on each Distribution Date, the "significance
estimate" of each Yield Maintenance Agreement calculated in accordance with Item
1115 of Regulation AB as of such Distribution Date.

            (j) Upon the occurrence of the events specified in the Yield
Maintenance Agreements, the Trustee shall open and maintain in its name, a
separate non-interest bearing trust account for the benefit of the holders of
the Class 3-A-11 and Class 3-A-16 Certificates as a part of the Trust Estate.
The Posted Collateral Account shall be an Eligible Account and funds on deposit
therein shall be held separate and apart from and shall not be commingled with,
any other moneys, including, without limitation, other moneys of the Trustee
held pursuant to this Agreement.

            (k) With respect to any remittance received by the Trustee after the
day on which such payment was due, the Servicer shall pay to the Trustee
interest on any such late payment at an annual rate equal to the Prime Rate,
adjusted as of the date of each change, but in no event greater than the maximum
amount permitted by applicable law. Such interest shall be deposited in the
Certificate Account by the Servicer on the date such late payment is made and
shall cover the period commencing with the day such payment was due and ending
with the Business Day on which such payment is made, both inclusive. Such
interest shall be remitted along with the distribution payable on the next
succeeding Remittance Date. The payment by the Servicer of any such interest
shall not be deemed an extension of time for payment or a waiver of any Event of
Default. Any payment pursuant to this paragraph made by the Servicer to the
Trustee shall be from the Servicer's own funds, without reimbursement therefor.

            Section 3.09 Collection of Taxes, Assessments and Similar Items;
Escrow Accounts. (a) To the extent required by the related Mortgage Note and not
violative of current law, the Servicer shall segregate and hold all funds
collected and received pursuant to each Mortgage Loan which constitute Escrow
Payments in trust separate and apart from any of its own funds and general
assets and for such purpose shall establish and maintain one or more escrow
accounts (collectively, the "Escrow Account"), titled "Bank of America, National
Association, in trust for registered holders of Banc of America Alternative Loan
Trust 2007-1 Mortgage Pass-Through Certificates, Series 2007-1 and various
Mortgagors." The Escrow Account shall be established with a commercial bank, a
savings bank or a savings and loan association that meets the guidelines set
forth by Fannie Mae or Freddie Mac as an eligible institution for escrow
accounts and which is a member of the Automated Clearing House. In any case, the
Escrow Account shall be insured by the FDIC to the fullest extent permitted by
law. The Servicer shall deposit in the appropriate Escrow Account on a daily
basis, and retain therein: (i) all Escrow Payments collected on account of the
Mortgage Loans, (ii) all amounts representing proceeds of any hazard insurance
policy which are to be applied to the restoration or repair of any related
Mortgaged Property and (iii) all amounts representing proceeds of any Primary
Insurance Policy. Nothing herein shall require the Servicer to compel a
Mortgagor to establish an Escrow Account in violation of applicable law.

             (b) Withdrawals of amounts so collected from the Escrow Accounts may
be made by the Servicer only (i) to effect timely payment of taxes, assessments,
mortgage insurance premiums, fire and hazard insurance premiums, condominium or
PUD association dues, or comparable items constituting Escrow Payments for the
related Mortgage, (ii) to reimburse the Servicer out of related Escrow Payments
made with respect to a Mortgage Loan for any Servicing Advance made by the
Servicer pursuant to Section 3.09(c) with respect to such Mortgage Loan, (iii)
to refund to any Mortgagor any sums determined to be overages, (iv) for transfer
to the Servicer Custodial Account upon default of a Mortgagor or in accordance
with the terms of the related Mortgage Loan and if permitted by applicable law,
(v) for application to restore or repair the Mortgaged Property, (vi) to pay to
the Mortgagor, to the extent required by law, any interest paid on the funds
deposited in the Escrow Account, (vii) to pay to itself any interest earned on
funds deposited in the Escrow Account (and not required to be paid to the
Mortgagor), (viii) to the extent permitted under the terms of the related
Mortgage Note and applicable law, to pay late fees with respect to any Monthly
Payment which is received after the applicable grace period, (ix) to withdraw
suspense payments that are deposited into the Escrow Account, (x) to withdraw
any amounts inadvertently deposited in the Escrow Account or (xi) to clear and
terminate the Escrow Account upon the termination of this Agreement in
accordance with Section 10.01. Any Escrow Account shall not be a part of the
Trust Estate.

            (c) With respect to each Mortgage Loan, the Servicer shall maintain
accurate records reflecting the status of taxes, assessments and other charges
which are or may become a lien upon the Mortgaged Property and the status of
Primary Insurance Policy premiums and fire and hazard insurance coverage. The
Servicer shall obtain, from time to time, all bills for the payment of such
charges (including renewal premiums) and shall effect payment thereof prior to
the applicable penalty or termination date and at a time appropriate for
securing maximum discounts allowable, employing for such purpose deposits of the
Mortgagor in the Escrow Account, if any, which shall have been estimated and
accumulated by the Servicer in amounts sufficient for such purposes, as allowed
under the terms of the Mortgage. To the extent that a Mortgage does not provide
for Escrow Payments, the Servicer shall determine that any such payments are
made by the Mortgagor. The Servicer assumes full responsibility for the timely
payment of all such bills and shall effect timely payments of all such bills
irrespective of each Mortgagor's faithful performance in the payment of same or
the making of the Escrow Payments. The Servicer shall advance any such payments
that are not timely paid, but the Servicer shall be required so to advance only
to the extent that such Servicing Advances, in the good faith judgment of the
Servicer, will be recoverable by the Servicer out of Insurance Proceeds,
Liquidation Proceeds or otherwise.

            Section 3.10 Access to Certain Documentation and Information
Regarding the Mortgage Loans. The Servicer shall afford the Trustee reasonable
access to all records and documentation regarding the Mortgage Loans and all
accounts, insurance information and other matters relating to this Agreement,
such access being afforded without charge, but only upon reasonable request and
during normal business hours at the office designated by the Servicer.

            Section 3.11 Permitted Withdrawals from the Servicer Custodial
Account and Certificate Account. (a) The Servicer may from time to time make
withdrawals from the Servicer Custodial Account, for the following purposes:

            (i) to pay to the Servicer (to the extent not previously retained),
      the Servicing Compensation to which it is entitled pursuant to Section
      3.17;

            (ii) to reimburse the Servicer for unreimbursed Advances made by it,
      such right of reimbursement pursuant to this clause (ii) being limited to
      amounts received on the Mortgage Loan(s) (including amounts received in
      respect of BPP Mortgage Loan Payments for such Mortgage Loan) in respect
       of which any such Advance was made;

            (iii) to reimburse the Servicer for any Nonrecoverable Advance
      previously made, such right of reimbursement pursuant to this clause (iii)
      being limited to amounts received on the Mortgage Loans in the same Loan
      Group as the Mortgage Loan(s) in respect of which such Nonrecoverable
      Advance was made;

            (iv) to reimburse the Servicer for Insured Expenses from the related
      Insurance Proceeds;

            (v) to pay to the purchaser, with respect to each Mortgage Loan or
      REO Property that has been purchased pursuant to Section 2.02 or 2.04, all
      amounts received thereon after the date of such purchase;

            (vi) to reimburse the Servicer or the Depositor for expenses
      incurred by any of them and reimbursable pursuant to Section 7.03;

            (vii) to withdraw any amount deposited in the Servicer Custodial
      Account and not required to be deposited therein;

            (viii) on or prior to the Remittance Date, to withdraw an amount
      equal to the related Pool Distribution Amount for such Distribution Date,
      to the extent on deposit, and remit such amount in immediately available
      funds to the Trustee for deposit in the Certificate Account; and

            (ix) to clear and terminate the Servicer Custodial Account upon
      termination of this Agreement pursuant to Section 10.01.

            The Servicer shall keep and maintain separate accounting, on a
Mortgage Loan by Mortgage Loan basis, for the purpose of justifying any
withdrawal from the Servicer Custodial Account pursuant to clauses (i), (ii),
(iv) and (v). The Servicer shall keep and maintain such separate accounting for
each Loan Group. Prior to making any withdrawal from the Servicer Custodial
Account pursuant to clause (iii), the Servicer shall deliver to the Trustee an
Officer's Certificate of a Servicing Officer indicating the amount of any
previous Advance determined by the Servicer to be a Nonrecoverable Advance and
identifying the related Mortgage Loan(s) and their respective portions of such
Nonrecoverable Advance. The Servicer shall notify the Depositor and the Trustee
of the amount, purpose and party paid pursuant to clause (vi) above.

            (b) The Trustee shall be deemed to withdraw funds from the
applicable Certificate Account sub-accounts for distributions to
Certificateholders in the manner specified in this Agreement. In addition, the
Trustee may from time to time make withdrawals from the Certificate Account for
the following purposes:

            (i) to pay to itself the Trustee Fee;

            (ii) to pay to itself as additional compensation earnings on or
      investment income with respect to funds in the Certificate Account and any
      other amounts (other than the Trustee Fee) due to it under this Agreement
      for the related Distribution Date;

            (iii) to withdraw and return to the Servicer any amount deposited in
      the Certificate Account and not required to be deposited therein; and

            (iv) to clear and terminate the Certificate Account upon termination
      of this Agreement pursuant to Section 10.01.

            The Trustee shall notify the Depositor and the Servicer of the
amount and purpose of any payments made pursuant to clause (ii) above (other
than any earnings or investment income with respect to funds in the Certificate
Account).

            (c) On each Distribution Date, funds on deposit in the Certificate
Account and deemed to be on deposit in the Upper-Tier Certificate Sub-Account
shall be used to make payments on the Regular Certificates and the Class 3-A-R
Certificate (in respect of the Class R-U Interest) as provided in Sections 5.01
and 5.02. The Certificate Account shall be cleared and terminated upon
termination of this Agreement pursuant to Section 10.01.

            Section 3.12 Maintenance of Hazard Insurance. The Servicer shall
cause to be maintained for each Mortgage Loan, fire and hazard insurance with
extended coverage customary in the area where the Mortgaged Property is located
in an amount which is at least equal to the lesser of (a) the full insurable
value of the Mortgaged Property or (b) the greater of (i) the outstanding
principal balance owing on the Mortgage Loan and (ii) an amount such that the
proceeds of such insurance shall be sufficient to avoid the application to the
Mortgagor or loss payee of any coinsurance clause under the policy. If the
Mortgaged Property is in an area identified in the Federal Register by the
Federal Emergency Management Agency as having special flood hazards (and such
flood insurance has been made available) the Servicer will cause to be
maintained a flood insurance policy meeting the requirements of the current
guidelines of the Federal Insurance Administration and the requirements of
Fannie Mae or Freddie Mac. The Servicer shall also maintain on REO Property,
fire and hazard insurance with extended coverage in an amount which is at least
equal to the maximum insurable value of the improvements which are a part of
such property, liability insurance and, to the extent required, flood insurance
in an amount required above. Any amounts collected by the Servicer under any
such policies (other than amounts to be deposited in an Escrow Account and
applied to the restoration or repair of the property subject to the related
Mortgage or property acquired in liquidation of the Mortgage Loan, or to be
released to the Mortgagor in accordance with Customary Servicing Procedures)
shall be deposited in the Servicer Custodial Account, subject to withdrawal
pursuant to Section 3.11(a). It is understood and agreed that no earthquake or
other additional insurance need be required by the Servicer of any Mortgagor or
maintained on REO Property, other than pursuant to such applicable laws and
regulations as shall at any time be in force and as shall require such
additional insurance. All policies required hereunder shall be endorsed with
standard mortgagee clauses with loss payable to the Servicer, and shall provide
for at least 30 days' prior written notice of any cancellation, reduction in
amount or material change in coverage to the Servicer.

            The hazard insurance policies for each Mortgage Loan secured by a
unit in a condominium development or planned unit development shall be
maintained with respect to such Mortgage Loan and the related development in a
manner which is consistent with Fannie Mae requirements.

            Notwithstanding the foregoing, the Servicer may maintain a blanket
policy insuring against hazard losses on all of the Mortgaged Properties
relating to the Mortgage Loans in lieu of maintaining the required hazard
insurance policies for each Mortgage Loan and may maintain a blanket policy
insuring against special flood hazards in lieu of maintaining any required flood
insurance. Any such blanket policies shall (A) be consistent with prudent
industry standards, (B) name the Servicer as loss payee, (C) provide coverage in
an amount equal to the aggregate unpaid principal balance on the related
Mortgage Loans without co-insurance, and (D) otherwise comply with the
requirements of this Section 3.12. Any such blanket policy may contain a
deductible clause; provided that if any Mortgaged Property is not covered by a
separate policy otherwise complying with this Section 3.12 and a loss occurs
with respect to such Mortgaged Property which loss would have been covered by
such a policy, the Servicer shall deposit in the Servicer Custodial Account the
difference, if any, between the amount that would have been payable under a
separate policy complying with this Section 3.12 and the amount paid under such
blanket policy.

            Section 3.13 Enforcement of Due-On-Sale Clauses; Assumption
Agreements. (a) Except as otherwise provided in this Section 3.13, when any
Mortgaged Property subject to a Mortgage has been conveyed by the Mortgagor, the
Servicer shall use reasonable efforts, to the extent that it has actual
knowledge of such conveyance, to enforce any due-on-sale clause contained in any
Mortgage Note or Mortgage, to the extent permitted under applicable law and
governmental regulations, but only to the extent that such enforcement will not
adversely affect or jeopardize coverage under any Required Insurance Policy.
Notwithstanding the foregoing, the Servicer is not required to exercise such
rights with respect to a Mortgage Loan if the Person to whom the related
Mortgaged Property has been conveyed or is proposed to be conveyed satisfies the
terms and conditions contained in the Mortgage Note and Mortgage related thereto
and the consent of the mortgagee under such Mortgage Note or Mortgage is not
otherwise required under such Mortgage Note or Mortgage as a condition to such
transfer. If (i) the Servicer is prohibited by law from enforcing any such
due-on-sale clause, (ii) coverage under any Required Insurance Policy would be
adversely affected, (iii) the Mortgage Note does not include a due-on-sale
clause or (iv) nonenforcement is otherwise permitted hereunder, the Servicer is
authorized, subject to Section 3.13(b), to take or enter into an assumption and
modification agreement from or with the Person to whom such Mortgaged Property
has been or is about to be conveyed, pursuant to which such Person becomes
liable under the Mortgage Note and, unless prohibited by applicable state law,
the Mortgagor remains liable thereon; provided that the Mortgage Loan shall
continue to be covered (if so covered before the Servicer enters such agreement)
by the applicable Required Insurance Policies. The Servicer, subject to Section
3.13(b), is also authorized with the prior approval of the insurers under any
Required Insurance Policies to enter into a substitution of liability agreement
with such Person, pursuant to which the original Mortgagor is released from
liability and such Person is substituted as Mortgagor and becomes liable under
the Mortgage Note. Notwithstanding the foregoing, the Servicer shall not be
deemed to be in default under this Section 3.13 by reason of any transfer or
assumption which the Servicer reasonably believes it is restricted by law from
preventing, for any reason whatsoever.

            (b) Subject to the Servicer's duty to enforce any due-on-sale clause
to the extent set forth in Section 3.13(a), in any case in which a Mortgaged
Property has been conveyed to a Person by a Mortgagor, and such Person is to
enter into an assumption agreement or modification agreement or supplement to
the Mortgage Note or Mortgage or if an instrument of release is required
releasing the Mortgagor from liability on the Mortgage Loan, the Servicer shall
prepare and execute the assumption agreement with the Person to whom the
Mortgaged Property is to be conveyed and such modification agreement or
supplement to the Mortgage Note or Mortgage or other instruments as are
reasonable or necessary to carry out the terms of the Mortgage Note or Mortgage
or otherwise to comply with any applicable laws regarding assumptions or the
transfer of the Mortgaged Property to such Person. In connection with any such
assumption, no material term of the Mortgage Note may be changed. In addition,
the substitute Mortgagor and the Mortgaged Property must be acceptable to the
Servicer in accordance with its underwriting standards as then in effect.
Together with each such substitution, assumption or other agreement or
instrument, the Servicer shall execute an Officer's Certificate signed by a
Servicing Officer stating that the requirements of this subsection have been
met. The Servicer shall notify the Trustee that any such substitution or
assumption agreement has been completed by forwarding to the Trustee (or at the
direction of the Trustee, the Custodian) the Officer's Certificate described in
the previous sentence and the original of such substitution or assumption
agreement, which in the case of the original shall be added to the related
Mortgage File and shall, for all purposes, be considered a part of such Mortgage
File to the same extent as all other documents and instruments constituting a
part thereof. Any fee collected by the Servicer for entering into an assumption
or substitution of liability agreement may be retained by the Servicer as
additional Servicing Compensation.

            Section 3.14 Realization Upon Defaulted Mortgage Loans; REO
Property. Subject to Section 3.21, the Servicer shall use reasonable efforts to
foreclose upon or otherwise comparably convert the ownership of Mortgaged
Properties securing such of the Mortgage Loans as come into and continue in
default and as to which no satisfactory arrangements can be made for collection
of delinquent payments. In connection with such foreclosure or other conversion,
the Servicer shall follow Customary Servicing Procedures and shall meet the
requirements of the insurer under any Required Insurance Policy; provided,
however, that the Servicer may enter into a special servicing agreement with an
unaffiliated Holder of 100% Percentage Interest of a Class of Subordinate
Certificates or a holder of a class of securities representing interests in the
Subordinate Certificates alone or together with other subordinated mortgage
pass-through certificates. Such agreement shall be substantially in the form
attached hereto as Exhibit K or subject to each Rating Agency's acknowledgment
that the ratings of the Certificates in effect immediately prior to the entering
into such agreement would not be qualified, downgraded or withdrawn and the
Certificates would not be placed on credit review status (except for possible
upgrading) as a result of such agreement. Any such agreement may contain
provisions whereby such holder may instruct the Servicer to commence or delay
foreclosure proceedings with respect to delinquent Mortgage Loans and will
contain provisions for the deposit of cash by the holder that would be available
for distribution to Certificateholders if Liquidation Proceeds are less than
they otherwise may have been had the Servicer acted in accordance with its
normal procedures. Notwithstanding the foregoing, the Servicer shall not be
required to expend its own funds in connection with any foreclosure or towards
the restoration of any Mortgaged Property unless it shall determine (i) that
such restoration and/or foreclosure will increase the proceeds of liquidation of
the Mortgage Loan after reimbursement to itself of such expenses and (ii) that
such expenses will be recoverable to it through proceeds of the liquidation of
the Mortgage Loan (respecting which it shall have priority for purposes of
withdrawals from the Servicer Custodial Account). Any such expenditures shall
constitute Servicing Advances for purposes of this Agreement.

            With respect to any REO Property, the deed or certificate of sale
shall be taken in the name of the Trustee for the benefit of the
Certificateholders, or its nominee, on behalf of the Certificateholders. The
Trustee's name shall be placed on the title to such REO Property solely as the
Trustee hereunder and not in its individual capacity. The Servicer shall ensure
that the title to such REO Property references this Agreement and the Trustee's
capacity hereunder. Pursuant to its efforts to sell such REO Property, the
Servicer shall either itself or through an agent selected by the Servicer
manage, conserve, protect and operate such REO Property in the same manner that
it manages, conserves, protects and operates other foreclosed property for its
own account and in the same manner that similar property in the same locality as
the REO Property is managed. Incident to its conservation and protection of the
interests of the Certificateholders, the Servicer may rent the same, or any part
thereof, as the Servicer deems to be in the best interest of the
Certificateholders for the period prior to the sale of such REO Property. The
Servicer shall prepare for and deliver to the Trustee a statement with respect
to each REO Property that has been rented, if any, showing the aggregate rental
income received and all expenses incurred in connection with the management and
maintenance of such REO Property at such times as is necessary to enable the
Trustee to comply with the reporting requirements of the REMIC Provisions;
provided, however, that the Servicer shall have no duty to rent any REO Property
on behalf of the Trust. The net monthly rental income, if any, from such REO
Property shall be deposited in the Servicer Custodial Account no later than the
close of business on each Determination Date. The Servicer shall perform, with
respect to the Mortgage Loans, the tax reporting and withholding required by
Sections 1445 and 6050J of the Code with respect to foreclosures and
abandonments, the tax reporting required by Section 6050H of the Code with
respect to the receipt of mortgage interest from individuals and, if required by
Section 6050P of the Code with respect to the cancellation of indebtedness by
certain financial entities, by preparing such tax and information returns as may
be required, in the form required.

            If the Trust acquires any Mortgaged Property as described above or
otherwise in connection with a default or a default which is reasonably
foreseeable on a Mortgage Loan, the Servicer shall dispose of such Mortgaged
Property prior to the end of the third calendar year following the year of its
acquisition by the Trust (such period, the "REO Disposition Period") unless (A)
the Trustee shall have been supplied by the Servicer with an Opinion of Counsel
to the effect that the holding by the Trust of such Mortgaged Property
subsequent to the REO Disposition Period will not result in the imposition of
taxes on "prohibited transactions" (as defined in Section 860F of the Code) on
any of the Upper-Tier REMIC, Middle-Tier REMIC or the Lower-Tier REMIC or cause
any REMIC created hereunder to fail to qualify as a REMIC at any time that any
Certificates are outstanding, or (B) the Trustee (at the Servicer


 
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