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POOLING AND SERVICING AGREEMENT

Pooling and Servicing Agreement

POOLING AND SERVICING AGREEMENT | Document Parties: CSFB Home Equity Mortgage | CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP., | DLJ MORTGAGE CAPITAL, INC., |    WILSHIRE CREDIT CORPORATION, You are currently viewing:
This Pooling and Servicing Agreement involves

CSFB Home Equity Mortgage | CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP., | DLJ MORTGAGE CAPITAL, INC., | WILSHIRE CREDIT CORPORATION,

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Title: POOLING AND SERVICING AGREEMENT
Governing Law: New York     Date: 10/17/2005

POOLING AND SERVICING AGREEMENT, Parties: csfb home equity mortgage , credit suisse first boston mortgage securities corp.  , dlj mortgage capital  inc.  ,    wilshire credit corporation
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                                                                  EXECUTION COPY

 

 

 

 

              CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.,

 

                                    Depositor

 

                           DLJ MORTGAGE CAPITAL, INC.,

 

                                     Seller

 

                          WILSHIRE CREDIT CORPORATION,

 

                                    Servicer

 

                           OCWEN LOAN SERVICING, LLC,

 

                                    Servicer

 

                               INDYMAC BANK, F.S.B.,

 

                                    Servicer

 

                        SELECT PORTFOLIO SERVICING, INC.,

 

                                Special Servicer

 

 

 

                                       and

 

                            JPMORGAN CHASE BANK, N.A.,

 

                                     Trustee

 

 

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

 

                         POOLING AND SERVICING AGREEMENT

                           Dated as of September 1, 2005

 

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

 

 

                    HOME EQUITY MORTGAGE TRUST SERIES 2005-4

          HOME EQUITY MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 2005-4

 

 

 

<PAGE>

 

 

 

                                Table of Contents

 

<TABLE>

<CAPTION>

<S>               <C>

                                    ARTICLE I

 

                                   DEFINITIONS

 

SECTION 1.01      Definitions

SECTION 1.02      Interest Calculations

SECTION 1.03      Allocation of Certain Interest Shortfalls

 

                                   ARTICLE II

 

          CONVEYANCE OF MORTGAGE LOANS; REPRESENTATIONS AND WARRANTIES

 

SECTION 2.01      Conveyance of Mortgage Loans

SECTION 2.02      Acceptance by the Trustee

SECTION 2.03      Representations and Warranties of the Seller, the Servicers and the Special Servicer

SECTION 2.04      Representations and Warranties of the Depositor as to the Mortgage Loans

SECTION 2.05      Delivery of Opinion of Counsel in Connection with Substitutions

SECTION 2.06      Execution and Delivery of Certificates

SECTION 2.07      REMIC Matters

SECTION 2.08      Covenants of each Servicer

SECTION 2.09      Conveyance of REMIC Regular Interests and Acceptance of REMIC 1, REMIC 2 and REMIC 3 by the   Trustee;

                 Issuance of Certificates

 

                                   ARTICLE III

 

                 ADMINISTRATION AND SERVICING OF MORTGAGE LOANS

 

SECTION 3.01      Servicers to Service Mortgage Loans

SECTION 3.02      Subservicing; Enforcement of the Obligations of Subservicers

SECTION 3.03      [Reserved]

SECTION 3.04      Trustee to Act as Servicer

SECTION 3.05      Collection of Mortgage Loans; Collection Accounts; Certificate Account; Pre-Funding Account; Capitalized

                  Interest Account

SECTION 3.06      Establishment of and Deposits to Escrow Accounts; Permitted Withdrawals from Escrow Accounts; Payments of

                 Taxes, Insurance and Other Charges

SECTION 3.07      Access to Certain Documentation and Information Regarding the Mortgage Loans; Inspections

SECTION 3.08      Permitted Withdrawals from the Collection Accounts and Certificate Account

SECTION 3.09      Maintenance of Hazard Insurance and Mortgage Impairment Insurance; Claims; Restoration of Mortgaged Property

SECTION 3.10      Enforcement of Due-on-Sale Clauses; Assumption Agreements

SECTION 3.11      Realization Upon Defaulted Mortgage Loans; Repurchase of Certain Mortgage Loans

SECTION 3.12      Trustee to Cooperate; Release of Mortgage Files

SECTION 3.13      Documents, Records and Funds in Possession of a Servicer to be Held for the Trustee

SECTION 3.14      Servicing Fee

SECTION 3.15      Access to Certain Documentation

SECTION 3.16      Annual Statement as to Compliance

SECTION 3.17      Annual Independent Public Accountants' Servicing Statement; Financial Statements

SECTION 3.18      Maintenance of Fidelity Bond and Errors and Omissions Insurance

SECTION 3.19      Duties of the Credit Risk Manager

SECTION 3.20      Limitation Upon Liability of the Credit Risk Manager

SECTION 3.21      Advance Facility

SECTION 3.22      Special Serviced Mortgage Loans

SECTION 3.23      Maintenance of Credit Insurance Policy

 

 

                                   ARTICLE IV

 

                   DISTRIBUTIONS AND ADVANCES BY THE SERVICER

 

SECTION 4.01      Advances by the Servicer

SECTION 4.02      Priorities of Distribution

SECTION 4.03      [Reserved]

SECTION 4.04      [Reserved]

SECTION 4.05      Allocation of Realized Losses

SECTION 4.06      Monthly Statements to Certificateholders

SECTION 4.07      Distributions on the REMIC 1 Regular Interests and REMIC 2 Regular Interests

SECTION 4.08      [Reserved]

SECTION 4.09      Prepayment Charges

SECTION 4.10      Servicers to Cooperate

 

                                    ARTICLE V

 

                                 THE CERTIFICATES

 

SECTION 5.01      The Certificates

SECTION 5.02      Certificate Register; Registration of Transfer and Exchange of Certificates

SECTION 5.03      Mutilated, Destroyed, Lost or Stolen Certificates

SECTION 5.04       Persons Deemed Owners

SECTION 5.05      Access to List of Certificateholders' Names and Addresses

SECTION 5.06      Maintenance of Office or Agency

 

                                   ARTICLE VI

 

        THE DEPOSITOR, THE SELLER, THE SERVICERS AND THE SPECIAL SERVICER

 

SECTION 6.01      Respective Liabilities of the Depositor, the Sellers, the Servicers and the Special Servicer

SECTION 6.02      Merger or Consolidation of the Depositor, the Seller, a Servicer or the Special Servicer

SECTION 6.03      Limitation on Liability of the Depositor, the Seller, the Servicers, the Special Servicer and Others

SECTION 6.04      Limitation on Resignation of a Servicer

 

                                   ARTICLE VII

 

                                     DEFAULT

 

SECTION 7.01      Events of Default

SECTION 7.02      Trustee to Act; Appointment of Successor

SECTION 7.03      Notification to Certificateholders

 

                                  ARTICLE VIII

 

                             CONCERNING THE TRUSTEE

 

SECTION 8.01      Duties of the Trustee

SECTION 8.02      Certain Matters Affecting the Trustee

SECTION 8.03      Trustee Not Liable for Certificates or Mortgage Loans

SECTION 8.04      Trustee May Own Certificates

SECTION 8.05      Trustee's Fees and Expenses

SECTION 8.06      Eligibility Requirements for the Trustee and Custodian

SECTION 8.07      Resignation and Removal of the Trustee

SECTION 8.08      Successor Trustee

SECTION 8.09      Merger or Consolidation of the Trustee

SECTION 8.10      Appointment of Co-Trustee or Separate Trustee

SECTION 8.11      Tax Matters

SECTION 8.12      Commission Reporting

 

                                   ARTICLE IX

 

                                   TERMINATION

 

SECTION 9.01      Termination upon Liquidation or Purchase of the Mortgage Loans

SECTION 9.02      Final Distribution on the Certificates

SECTION 9.03      Additional Termination Requirements

 

                                    ARTICLE X

 

                            MISCELLANEOUS PROVISIONS

 

SECTION 10.01     Amendment

SECTION 10.02     Recordation of Agreement; Counterparts

SECTION 10.03     Governing Law

SECTION 10.04     [Reserved]

SECTION 10.05     Notices

SECTION 10.06     Severability of Provisions

SECTION 10.07     Assignment

SECTION 10.08     Limitation on Rights of Certificateholders

SECTION 10.09     Certificates Nonassessable and Fully Paid

SECTION 10.10     Non-Solicitation

</TABLE>

 

 

<PAGE>

 

 

 

EXHIBITS

EXHIBIT A.        Form of Class A Certificates

EXHIBIT B.        Form of Subordinate Certificate

EXHIBIT C.        Form of Residual Certificate

EXHIBIT D.        Form of Notional Amount Certificate

EXHIBIT E.        Form of Class P Certificate

EXHIBIT F.        Form of Reverse Certificates

EXHIBIT G.        Form of Initial Certification of Custodian

EXHIBIT H.        Form of Final Certification of Custodian

EXHIBIT I.        Transfer Affidavit

EXHIBIT J.        Form of Transferor Certificate

EXHIBIT K.        Form of Investment Letter (Non-Rule 144A)

EXHIBIT L.        Form of Rule 144A Letter

EXHIBIT M.        Request for Release

EXHIBIT N.        Form of Subsequent Transfer Agreement

EXHIBIT O-1.      Form of Collection Account Certification

EXHIBIT O-2.      Form of Collection Account Letter Agreement

EXHIBIT P-1.      Form of Escrow Account Certification

EXHIBIT P-2.      Form of Escrow Account Letter Agreement

EXHIBIT Q.        [Reserved]

EXHIBIT R-1.      Form of Custodial Agreement for LaSalle Bank National

                 Association

EXHIBIT R-2.      Form of Custodial Agreement for Wells Fargo Bank, N.A

EXHIBIT S.        [Reserved]

EXHIBIT T.        Data Fields for IndyMac Serviced Loans Transferred to Wilshire

EXHIBIT U.        Charged Off Loan Data Report

EXHIBIT V.        Form of Monthly Statement to Certificateholders

EXHIBIT W.        Form of Depositor Certification

EXHIBIT X.        Form of Trustee Certification

EXHIBIT Y.        Form of Servicer Certification

EXHIBIT Z.        Information to be Provided by Servicer to Trustee

EXHIBIT AA        Form of Limited Power of Attorney

EXHIBIT BB.       Credit Insurance Policy

SCHEDULE I        Mortgage Loan Schedule

SCHEDULE II       Seller's Representations and Warranties

SCHEDULE IIIA     Wilshire Representations and Warranties

SCHEDULE IIIB     Ocwen Representations and Warranties

SCHEDULE IIIC     IndyMac Representations and Warranties

SCHEDULE IIID     SPS Representations and Warranties

SCHEDULE IV       Representations and Warranties for the Mortgage Loans

 

 

 

<PAGE>

 

 

 

                  THIS POOLING AND SERVICING AGREEMENT, dated as of September 1,

2005, among CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP., a Delaware

corporation, as depositor (the "Depositor"), DLJ MORTGAGE CAPITAL, INC., a

Delaware corporation, as Seller (the "Seller"), WILSHIRE CREDIT CORPORATION, a

Nevada corporation, as servicer (a "Servicer" or "Wilshire"), OCWEN LOAN

SERVICING, LLC, a Delaware limited liability company, as servicer (a "Servicer"

or "Ocwen"), INDYMAC BANK, F.S.B., a federal savings bank, as servicer (a

"Servicer" or "IndyMac", and together with Wilshire and Ocwen, the "Servicers"),

SELECT PORTFOLIO SERVICING, INC., a Utah corporation, as special servicer (the

"Special Servicer" or "SPS") and JPMORGAN CHASE BANK, NATIONAL ASSOCIATION, a

national banking association organized under the laws of the United States, as

trustee (the "Trustee").

 

 

                                 WITNESSETH THAT

 

                  In consideration of the mutual agreements herein contained,

the parties hereto agree as follows:

 

 

                              PRELIMINARY STATEMENT

 

                  The Depositor intends to sell pass-through certificates

(collectively, the "Certificates"), to be issued hereunder in multiple classes,

which in the aggregate will evidence the entire beneficial ownership interest in

the Trust Fund created hereunder. The Certificates will consist of twenty-three

classes of certificates, designated as (i) the Class A-1 Certificates, (ii) the

Class A-2A Certificates, (iii) the Class A-2B Certificates, (iv) the Class A-3

Certificates, (v) the Class A-4 Certificates, (vi) the Class M-1 Certificates,

(vii) the Class M-2 Certificates, (viii) the Class M-3 Certificates, (ix) the

Class M-4 Certificates, (x) the Class M-5 Certificates, (xi) the Class M-6

Certificates, (xii) the Class M-7 Certificates, (xiii) the Class M-8

Certificates, (xiv) the Class M-9A Certificates, (xv) the Class M-9F

Certificates, (xvi) the Class B-1 Certificates, (xvii) the Class B-2

Certificates, (xviii) the Class P Certificates, (xix) the Class X-1

Certificates, (xx) the Class X-2 Certificates, (xxi) the Class X-S Certificates,

(xxii) the Class A-R Certificates and (xxiii) the Class A-RL Certificates.

 

 

                                     REMIC 1

                                     -------

 

                  As provided herein, the Trustee will make an election to treat

the segregated pool of assets consisting of the Mortgage Loans and certain other

related assets subject to this Agreement (exclusive of the Pre-Funding Account,

the Capitalized Interest Account and the Subsequent Mortgage Loan Interest) as a

real estate mortgage investment conduit (a "REMIC") for federal income tax

purposes, and such segregated pool of assets will be designated as "REMIC 1."

The Class A-RL Certificates will represent the sole class of "residual

interests" in REMIC 1 for purposes of the REMIC Provisions (as defined herein)

under federal income tax law. The following table irrevocably sets forth the

designation, the Uncertificated REMIC 1 Pass-Through Rate and the initial

Uncertificated Principal Balance for each of the "regular interests" in REMIC 1

(the "REMIC 1 Regular Interests"). None of the REMIC 1 Regular Interests will be

certificated. The latest possible maturity date (determined for purposes of

satisfying Treasury regulation Section 1.860G-1(a)(4)(iii)) of each of the REMIC

1 Regular Interests will be the Latest Possible Maturity Date as defined herein.

 

                       Uncertificated REMIC 1           Initial Uncertificated

  Designation              Pass-Through Rate               Principal Balance

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

      LTI-1                    Variable(1)                    $ 619,379,380.54

    LTI-PF                    Variable(1)                    $   29,400,300.00

    LTI-S1                    Variable(1)                           (2)

    LTI-S2                    Variable(1)                           (2)

     LTI-P                    Variable(1)                    $          100.00

     LTI-R                    Variable(1)                    $          100.00

 

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

(1)       Calculated as provided in the definition of Uncertificated REMIC 1

         Pass-Through Rate.

 

(2)       ______ REMIC 1 Regular Interest LTI-S1 and REMIC 1 Regular Interest

         LTI-S2 will not have an Uncertificated Principal Balance but will

         accrue interest on an uncertificated notional amount calculated in

         accordance with the definition of "Uncertificated Notional Amount"

         herein.

 

 

                                     REMIC 2

                                     -------

 

                  As provided herein, an election will be made to treat the

segregated pool of assets consisting of the REMIC 1 Regular Interests as a REMIC

for federal income tax purposes, and such segregated pool of assets will be

designated as REMIC 2. The Class R-2 Interest will represent the sole class of

"residual interests" in REMIC 2 for purposes of the REMIC Provisions under

federal income tax law (the "Class R-2 Interest"). The following table

irrevocably sets forth the designation, Uncertificated REMIC 2 Pass-Through Rate

and initial Uncertificated Principal Balance for each of the "regular interests"

in REMIC 2 (the "REMIC 2 Regular Interests"). None of the REMIC 2 Regular

Interests will be certificated. The latest possible maturity date (determined

for purposes of satisfying Treasury regulation Section 1.860G-1(a)(4)(iii)) of

each of the REMIC 2 Regular Interests will be the Latest Possible Maturity Date

as defined herein.

 

 

                          Uncertificated REMIC 2         Initial Uncertificated

      Designation            Pass-Through Rate               Principal Balance

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

        MTI-AA                  Variable(1)                $      635,804,086.93

        MTI-A-1                 Variable(1)                $         1,000,000.00

       MTI-A-2A                 Variable(1)                $        1,948,000.00

       MTI-A-2B                 Variable(1)                $          649,400.00

        MTI-A-3                 Variable(1)                $        1,000,000.00

         MTI-A-4                 Variable(1)                $          199,400.00

        MTI-M-1                 Variable(1)                $          329,600.00

        MTI-M-2                 Variable(1)                $          336,000.00

        MTI-M-3                  Variable(1)                $          128,000.00

        MTI-M-4                 Variable(1)                $          150,400.00

        MTI-M-5                 Variable(1)                $          131,200.00

        MTI-M-6                 Variable(1)                 $          105,600.00

        MTI-M-7                 Variable(1)                $          115,200.00

        MTI-M-8                 Variable(1)                $           86,400.00

       MTI-M-9F                 Variable(1)                $           58,000.00

       MTI-M-9A                 Variable(1)                $           47,600.00

        MTI-B-1                 Variable(1)                $           51,200.00

        MTI-B-2                 Variable(1)                $           64,000.00

        MTI-ZZ                  Variable(1)                $        6,575,593.61

         MTI-P                  Variable(1)                $              100.00

         MTI-R                  Variable(1)                $              100.00

         MTI-S                      (2)                              (3)

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

(1)       Calculated as provided in the definition of Uncertificated REMIC 2

         Pass-Through Rate.

 

(2)       REMIC 2 Regular Interest MTI-S will not have an Uncertificated REMIC 2

         Pass-Through Rate, but will be entitled to 100% of the amounts

         distributed on REMIC 1 Regular Interest LTI-S1 and REMIC 1 Regular

         Interest LTI-S2.

 

(3)       ______ REMIC 2 Regular Interest MTI-S will not have an Uncertificated

         Principal Balance, but will have an Uncertificated Notional Amount

         equal to the Uncertificated Notional Amount of REMIC 1 Regular Interest

         LTI-S1 and REMIC 1 Regular Interest LTI-S2.

 

 

                                     REMIC 3

 

                   As provided herein, an election will be made to treat the

segregated pool of assets consisting of the REMIC 2 Regular Interests as a REMIC

for federal income tax purposes, and such segregated pool of assets will be

designated as REMIC 3. The Class R-3 Interest will represent the sole class of

"residual interests" in REMIC 3 for purposes of the REMIC Provisions under

federal income tax law (the "Class R-3 Interest"). The following table

irrevocably sets forth the designation, Pass-Through Rate, aggregate Initial

Certificate Principal Balance and minimum denominations for each Class of

Certificates comprising the interests representing "regular interests" in REMIC

3, and the Class A-R Certificates, Class A-RL Certificates and Class X-2

Certificates which are not "regular interests" in REMIC 3. The latest possible

maturity date (determined for purposes of satisfying Treasury regulation Section

1.860G-1(a)(4)(iii)) of each of the Regular Certificates will be the Latest

Possible Maturity Date as defined herein.

 

 

<TABLE>

<CAPTION>

  ===================================================================================================================

                                                                                               Integral Multiples in

                   Class Certificate Balance      Pass-Through Rate      Minimum Denomination        Excess of Minimum

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

<S>                <C>                                <C>                 <C>                             <C>

  Class A-1         $        100,000,000.00            Adjustable(1)       $            25,000              $1

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

  Class A-2A        $        194,800,000.00            Adjustable(1)       $            25,000              $1

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

  Class A-2B        $         64,940,000.00            Adjustable(1)       $            25,000              $1

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

  Class A-3         $        100,000,000.00             4.7420%(3)         $            25,000              $1

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

  Class A-4         $         19,940,000.00            Adjustable(1)       $            25,000              $1

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

  Class P           $                100.00             Variable(2)        $               100               N/A

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

  Class A-R         $                100.00             Variable(2)        $               100              N/A

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

  Class A-RL        $                100.00             Variable(2)        $               100              N/A

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

  Class M-1         $         32,960,000.00             5.4841%(3)         $            25,000              $1

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

  Class M-2         $         33,600,000.00             5.5906%(3)         $            25,000              $1

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

  Class M-3          $         12,800,000.00             5.5392%(3)         $            25,000              $1

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

  Class M-4         $         15,040,000.00              5.7010%(3)         $            25,000              $1

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

  Class M-5         $         13,120,000.00             5.6182%(3)         $            25,000              $1

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

  Class M-6         $         10,560,000.00             5.7216%(3)         $            25,000              $1

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

  Class M-7         $         11,520,000.00             5.7657%(3)         $            25,000              $1

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

  Class M-8         $          8,640,000.00             5.9694%(3)         $            25,000              $1

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

  Class M-9A        $          4,760,000.00            Adjustable(1)       $            25,000              $1

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

  Class M-9F        $          5,800,000.00             6.4413%%(3)        $            25,000              $1

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

  Class B-1         $          5,120,000.00             7.0000%(3)         $            25,000              $1

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

  Class B-2         $          6,400,000.00             7.0000%(3)         $            25,000              $1

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

  Class X-1         $                  0.00           Variable(4)(5)                      100%             $1

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

  Class X-2         $                  0.00                0.00%                          N/A              N/A

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

  Class X-S         $                  0.00(6)          Variable(7)                       100%             $1

  ===================================================================================================================

</TABLE>

 

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

(1)       ______ The Class A-1, Class A-2A, Class A-2B, Class A-4 and Class M-9A

         Certificates have an adjustable rate and will receive interest pursuant

         to formulas based on LIBOR, subject to the Net Funds Cap.

 

(2)       ______ The initial pass-through rates on the Class P, Class A-R and

         Class A-RL Certificates will be approximately 8.844% per annum which is

         equal to the weighted average of the Net Mortgage Rates on the Initial

         Mortgage Loans and will vary after the first Distribution Date.

 

(3)       The Class A-3, Class M-1, Class M-2, Class M-3, Class M-4, Class M-5,

         Class M-6, Class M-7, Class M-8, Class M-9F, Class B-1 and Class B-2

         Certificates have a fixed rate subject to the Net Funds Cap. The fixed

         rate will increase by 0.50% per annum after the Optional Termination

         Date.

 

(4)       ______ The Class X-1 Certificates will have an initial principal

          balance of $8,779,680.54 and will accrue interest on its notional

         amount. For any Distribution Date, the notional amount of the Class X-1

         Certificates will be equal to the Aggregate Collateral Balance minus

         the aggregate Class Certificate Balance of the Class A-R, Class A-RL

         and Class P Certificates immediately prior to such Distribution Date.

         The initial notional amount of the Class X-1 Certificates is

         $648,779,680.54.

 

(5)       The Class X-1 Certificates are variable rate and will accrue interest

         on a notional amount.

 

(6)       ______ For federal income tax purposes, the Class X-S Certificates will

         not have a Class Principal Balance, but will have a notional amount

         equal to the Uncertificated Notional Amount of REMIC 2 Regular Interest

         MTI-S.

 

(7)       ______ The Class X-S Certificates are an interest only Class and for

         each Distribution Date the Class X-S Certificates shall receive the

         aggregate Excess Servicing Fee. For federal income tax purposes, the

         Class X-S Certificates will not have a Pass-Through Rate, but will be

         entitled to 100% of the amounts distributed on REMIC 2 Regular Interest

         MTI-S.

 

 

                   Set forth below are designations of Classes of Certificates to

the categories used herein:

 

 

<TABLE>

<CAPTION>

<S>                                    <C>

Book-Entry Certificates.............   All Classes of Certificates other than the Physical Certificates.

 

ERISA-Restricted Certificates.......   Class A-R, Class A-RL, Class P and Class X Certificates.

 

LIBOR Certificates..................   Class A-1, Class A-2A, Class A-2B, Class A-4 and Class M-9A Certificates.

 

Notional Amount Certificates........   Class X-1 Certificates and Class X-S Certificates.

 

Class A Certificates................   Class A-1,   Class A-2A,   Class A-2B,   Class A-3, Class A-4, Class A-R and Class A-RL

                                      Certificates.

 

Class B Certificates................   Class B-1 Certificates and Class B-2 Certificates

 

Class M Certificates................   Class M-1,   Class M-2,   Class M-3, Class M-4, Class M-5, Class M-6, Class M-7, Class

                                      M-8, Class M-9A and Class M-9F Certificates.

 

Offered Certificates................   All Classes of Certificates   (other than the Class B, Class P Certificates and Class

                                      X Certificates).

 

Physical Certificates...............   Class A-R, Class A-RL, Class P, Class B and Class X Certificates.

 

Private Certificates................   Class B, Class P and Class X Certificates.

 

Rating Agencies.....................   S&P, Fitch and Moody's.

 

Regular Certificates................   All   Classes of   Certificates   other   than the Class   A-R,   Class A-RL and Class X-2

                                      Certificates.

 

Residual Certificates...............   Class A-R Certificates and Class A-RL Certificates.

 

Senior Certificates.................   Class A-1,   Class A-2A,   Class A-2B,   Class A-3,   Class A-4,   Class P, Class A-R and

                                      Class A-RL Certificates.

 

Subordinate Certificates............   Class M-1,   Class M-2,   Class M-3, Class M-4, Class M-5, Class M-6, Class M-7, Class

                                       M-8, Class M-9A, Class M-9F, Class B-1, Class B-2 and Class X-1 Certificates.

 

Minimum Denominations...............   Class A-1,   Class A-2A,   Class A-2B,   Class A-3,   Class A-4,   Class M-1,   Class M-2,

                                       Class M-3,   Class M-4,   Class M-5,   Class M-6,   Class M-7,   Class M-8,   Class M-9A,

                                      Class M-9F,   Class B-1 and Class B-2   Certificates:   $25,000 and multiples of $1 in

                                      excess thereof.

 

                                      Class A-R, Class A-RL and Class P Certificates: $100. The Class X-1 Certificates will

                                      be issued as a single Certificate with a Certificate Principal Balance of $0.00.

                                      The Class X-2 Certificates will be issued as a single Certificate and will

                                      not have a principal balance. The Class X-S Certificates will be issued as a single

                                       Certificate with an initial Notional Amount of $504,626,161.34.

</TABLE>

 

 

<PAGE>

 

 

 

                                    ARTICLE I

 

                                   DEFINITIONS

 

                  SECTION 1.01 Definitions.

 

                   Whenever used in this Agreement, the following words and

phrases, unless the context otherwise requires, shall have the following

meanings:

 

                  Accepted Servicing Practices: With respect to any Mortgage

Loan, those mortgage servicing practices of prudent mortgage lending

institutions which service mortgage loans of the same type as such Mortgage Loan

in the jurisdiction where the related Mortgaged Property is located.

 

                  Advance: The payment required to be made by a Servicer with

respect to any Distribution Date pursuant to Section 4.01.

 

                  Aggregate   Collateral Balance: As of any date of determination

will be equal to the   Aggregate   Loan Balance plus the amount,   if any,   then on

deposit in the Pre-Funding Account.

 

                  Aggregate Loan Balance:   As of any   Distribution   Date will be

equal to the aggregate of the Stated   Principal   Balances of the Mortgage   Loans

determined as of the last day of the related Collection Period.

 

                   Aggregate   Subsequent   Transfer   Amount:   With   respect to any

Subsequent   Transfer   Date,   the aggregate   Stated   Principal   Balance as of the

applicable   Cut-off   Date of the   Subsequent   Mortgage   Loans   conveyed   on such

Subsequent   Transfer   Date,   as listed on the   revised   Mortgage   Loan   Schedule

delivered pursuant to Section 2.01(b); provided, however, that such amount shall

not exceed the amount on deposit in the Pre-Funding Account.

 

                  Agreement: This Pooling and Servicing Agreement and all

amendments or supplements hereto.

 

                  Ancillary Income:   All income derived from the Mortgage Loans,

other than Servicing Fees and Prepayment Charges,   including but not limited to,

late charges,   fees   received with respect to checks or bank drafts   returned by

the related bank for non-sufficient   funds,   assumption fees, optional insurance

administrative fees and all other incidental fees and charges.

 

                  Applied Loss Amount:   As to any   Distribution   Date, an amount

equal to the excess,   if any of (i) the aggregate Class Principal Balance of the

Certificates after giving effect to all Realized Losses incurred with respect to

the Mortgage Loans during the Due Period for such Distribution Date and payments

of principal on such Distribution Date and any amounts on deposit in the Reserve

Account over (ii) the Aggregate Collateral Balance for such Distribution Date.

 

                  Appraised Value: The amount set forth in an appraisal made in

connection with the origination of the related Mortgage Loan as the value of the

Mortgaged Property.

 

                  Assignment Agreement: An assignment agreement between DLJ

Mortgage Capital, Inc. as Seller and the Depositor, whereby the Mortgage Loans

are transferred and limited representations and warranties relating to the

Mortgage Loans are made.

 

                  Assignment of Mortgage: An assignment of the Mortgage,   notice

of transfer or equivalent instrument in recordable form (except for the omission

of the name of the assignee if such   Mortgage is endorsed in blank),   sufficient

under the laws of the   jurisdiction   wherein the related   Mortgaged   Property is

located to reflect the   transfer of the   Mortgage to the Trustee for the benefit

of the Certificateholders.

 

                  Auction Purchaser: As defined in Section 9.01.

 

                  Auction Date: As defined in Section 9.01.

 

                  Available Funds: With respect to any Distribution Date (A) the

sum of (i) all Scheduled   Payments (net of the related   Expense Fees (other than

the   Excess   Servicing   Fee))   due on the Due Date in the   month   in which   such

Distribution Date occurs and received prior to the related   Determination   Date,

together with any Advances in respect thereof required pursuant to Section 4.01;

(ii) all Insurance   Proceeds,   Liquidation   Proceeds and Net Recoveries received

during   the month   preceding   the   month of such   Distribution   Date;   (iii) all

Curtailments   and Payoffs   received during the Prepayment   Period   applicable to

such Distribution   Date (excluding   Prepayment   Charges);   (iv) amounts received

with respect to such Distribution Date as the Substitution   Adjustment Amount or

Repurchase Price; (v) Compensating Interest Payments for such Distribution Date;

(vi)   with   respect   to the   Distribution   Date in   December   2005,   the   amount

remaining in the Pre-Funding   Account at the end of the Pre-Funding   Period; and

(vii)   amounts   withdrawn   from the Reserve   Account and added to the   Principal

Remittance   Amount for such   Distribution   Date   minus (B) as to clauses   (A)(i)

through (iv) above,   reduced by amounts in reimbursement for Advances previously

made and other   amounts as to which the   Servicers are entitled to be reimbursed

pursuant to Section 3.08.

 

                   Bankruptcy Code: The United States Bankruptcy Reform Act of

1978, as amended.

 

                  Book-Entry Certificates: As specified in the Preliminary

Statement.

 

                  Business   Day:   Any day other than (i) a Saturday or a Sunday,

or (ii) a day on which banking   institutions   in the City of New York, New York,

or the city in which the Corporate Trust Office of the Trustee, or the states in

which any   Servicer's   servicing   operations   are   located,   or savings and loan

institutions in the States of Illinois,   Texas, Oregon, California or Florida is

located are authorized or obligated by law or executive order to be closed.

 

                  Capitalized   Interest   Account:   The separate Eligible Account

designated as such and created and maintained by the Trustee pursuant to Section

3.05(g) hereof. The Capitalized Interest Account shall be treated as an "outside

reserve fund" under applicable Treasury regulations and shall not be part of any

REMIC.   Except as provided in Section 3.05(g) hereof, any investment earnings on

the Capitalized   Interest Account shall be treated as owned by the Depositor and

will be taxable to the Depositor.

 

                  Capitalized Interest Deposit: $429,823.81.

 

                  Capitalized Interest Requirement:   With respect to the October

2005 Distribution   Date, an amount equal to interest accruing during the related

Interest Accrual Period for the LIBOR   Certificates at a per annum rate equal to

(x) the weighted average   Pass-Through Rate of the Offered   Certificates and the

Class B Certificates   multiplied by (y) the Pre-Funded Amount outstanding at the

end of the related Due Period.   With respect to the November   2005   Distribution

Date, an amount equal to interest   accruing during the related   Interest Accrual

Period for the LIBOR   Certificates at a per annum rate equal to (x) the weighted

average    Pass-Through   Rate   of   the   Offered   Certificates   and   the   Class   B

Certificates   for such   Distribution   Date   multiplied by (y) the sum of (c) the

Pre-Funded   Amount at the end of the   related   Due Period and (d) the   aggregate

Stated   Principal   Balance of the   Subsequent   Mortgage Loans that do not have a

first Due Date prior to November 1, 2005,   transferred   to the Trust   during the

related Due Period.   With respect to the December   2005   Distribution   Date,   an

amount equal to interest accruing during the related Interest Accrual Period for

the LIBOR   Certificates   at a per annum rate equal to (x) the   weighted   average

Pass-Through   Rate of the Offered   Certificates and the Class B Certificates for

such Distribution Date multiplied by (y) the sum of (c) the Pre-Funded Amount at

the end of the related Due Period and (d) the aggregate Stated Principal Balance

of the related Subsequent Mortgage Loans that do not have a first Due Date prior

to December 1, 2005, transferred to the Trust during the related Due Period.

 

                  Carryforward   Interest:   For any Class of Certificates and any

Distribution   Date,   the sum of (1) the amount,   if any, by which (x) the sum of

(A) Current Interest for such Class for the immediately   preceding   Distribution

Date and (B) any unpaid Carryforward   Interest from previous   Distribution Dates

exceeds   (y) the   amount   paid in   respect   of   interest   on such   Class on such

immediately preceding Distribution Date, and (2) interest on such amount for the

related Interest Accrual Period at the applicable Pass-Through Rate.

 

                  Certificate: Any one of the Certificates executed by the

Trustee in substantially the forms attached hereto as exhibits.

 

                  Certificates: As specified in the Preliminary Statement.

 

                  Certificate Account: The separate Eligible Account created and

maintained   with the Trustee,   or any other bank or trust company   acceptable to

the Rating Agencies which is incorporated under the laws of the United States or

any   state   thereof   pursuant   to   Section   3.05,   which   account   shall   bear a

designation   clearly   indicating   that the funds   deposited   therein are held in

trust for the benefit of the Trustee on behalf of the   Certificateholders or any

other account   serving a similar   function   acceptable   to the Rating   Agencies.

Funds in the Certificate   Account may (i) be held uninvested   without   liability

for interest or compensation thereon or (ii) be invested at the direction of the

Trustee in   Eligible   Investments   and   reinvestment   earnings   thereon   (net of

investment   losses)   shall   be   paid   to the   Trustee.   Funds   deposited   in the

Certificate Account (exclusive of the Trustee Fee and other amounts permitted to

be   withdrawn   pursuant   to   Section   3.08)   shall   be   held   in   trust   for the

Certificateholders.

 

                  Certificate   Balance:   With respect to any   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 Denomination   thereof minus

the sum of (i) all   distributions   of   principal   previously   made with   respect

thereto and (ii) all Realized Losses   allocated   thereto and, in the case of any

Subordinate Certificates, all other reductions in Certificate Balance previously

allocated thereto pursuant to Section 4.05.

 

                  Certificate Margin: As to each Class of LIBOR Certificates,

the applicable amount set forth below:

 

 

              Class                  Certificate Margin

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

                                      (1)          (2)

               A-1                     0.15%        0.30%

              A-2A                    0.11%        0.22%

              A-2B                    0.22%        0.44%

               A-4                    0.34%        0.68%

              M-9A                    1.80%        2.30%

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

(1)       On or prior to the Optional Termination Date.

 

(2)       After the Optional Termination Date.

 

 

                  Certificate Owner: With respect to a Book-Entry Certificate,

the Person who is the beneficial owner of such Book-Entry Certificate.

 

                  Certificate Register: The register maintained pursuant to

Section 5.02.

 

                  Certificateholder   or   Holder:   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 or any affiliate of the Depositor   shall

be deemed not to be Outstanding and the Percentage   Interest   evidenced   thereby

shall not be taken into account in determining   whether the requisite   amount of

Percentage   Interests   necessary   to   effect   such   consent   has been   obtained;

provided,   however,   that if any such Person (including the Depositor) owns 100%

of   the   Percentage   Interests   evidenced   by   a   Class   of   Certificates,   such

Certificates   shall be deemed to be   Outstanding   for purposes of any   provision

hereof that requires the consent of the Holders of   Certificates of a particular

Class as a   condition   to the taking of any   action   hereunder.   The   Trustee is

entitled   to   rely   conclusively   on a   certification   of the   Depositor   or any

affiliate of the Depositor in determining   which   Certificates are registered in

the name of an affiliate of the Depositor.

 

                   Charged Off Loan:   With   respect to any   Distribution   Date, a

defaulted   Mortgage Loan that is (x) not an Old Republic Covered Loan or (y) for

which coverage under the Credit   Insurance Policy is no longer   available,   that

has not yet been   liquidated,   giving   rise to a Realized   Loss,   on the date on

which the related Servicer   determines,   pursuant to the procedures set forth in

Section 3.11,   that there will be (i) no Significant Net Recoveries with respect

to such Mortgage Loan or (ii) the potential Net Recoveries are anticipated to be

an amount,   determined by the related Servicer in its good faith judgment and in

light   of   other   mitigating   circumstances,   that is   insufficient   to   warrant

proceeding   through   foreclosure or other   liquidation of the related   Mortgaged

Property.

 

                  Class: All Certificates bearing the same class designation as

set forth in the Preliminary Statement.

 

                  Class A-R Certificates:   The Class A-R Certificates represents

beneficial ownership of the Class R-2 Interest and Class R-3 Interest.

 

                  Class A-RL Certificates: The sole class of residual interests

in REMIC 1.

 

                  Class A-1   Pass-Through   Rate:   With   respect   to the   initial

Interest Accrual Period,   based on a LIBOR   determination   date of September 28,

2005,    3.99063%   per   annum.   With   respect   to   any   Interest   Accrual   Period

thereafter, will be a per annum rate equal to the lesser of (i) the sum of LIBOR

plus the related Certificate Margin and (ii) the Net Funds Cap.

 

                  Class A-2A   Pass-Through   Rate:   With   respect to the   initial

Interest Accrual Period,   based on a LIBOR   determination   date of September 28,

2005,    3.95063%   per   annum.   With   respect   to   any   Interest   Accrual   Period

thereafter, will be a per annum rate equal to the lesser of (i) the sum of LIBOR

plus the related Certificate Margin and (ii) the Net Funds Cap.

 

                  Class A-2B   Pass-Through   Rate:   With   respect to the   initial

Interest Accrual Period,   based on a LIBOR   determination   date of September 28,

2005,    4.05063%   per   annum.   With   respect   to   any   Interest   Accrual   Period

thereafter, will be a per annum rate equal to the lesser of (i) the sum of LIBOR

plus the related Certificate Margin and (ii) the Net Funds Cap.

 

                  Class A-3   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   4.7420%   per annum and (ii) the Net Funds Cap,   and (b) after the

Optional   Termination Date, the lesser of (i) 5.2420% per annum and (ii) the Net

Funds Cap.

 

                  Class A-4   Pass-Through   Rate:   With   respect   to the   initial

Interest Accrual Period,   based on a LIBOR   determination   date of September 28,

2005,    4.18063%   per   annum.   With   respect   to   any   Interest   Accrual   Period

thereafter, will be a per annum rate equal to the lesser of (i) the sum of LIBOR

plus the related Certificate Margin and (ii) the Net Funds Cap.

 

                  Class A-R Pass-Through   Rate: With respect to the Distribution

Date in October 2005,   November 2005 or December 2005, a per annum rate equal to

the Initial   Mortgage   Loan Net WAC Rate,   and with respect to any   Distribution

Date thereafter, a per annum rate equal to the Net Funds Cap.

 

                  Class A-RL Pass-Through Rate: With respect to the Distribution

Date in October 2005,   November 2005 or December 2005, a per annum rate equal to

the Initial   Mortgage   Loan Net WAC Rate,   and with respect to any   Distribution

Date thereafter, a per annum rate equal to the Net Funds Cap.

 

                  Class B-1   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   7.000%   per annum and (ii) the Net Funds   Cap,   and (b) after the

Optional   Termination   Date, the lesser of (i) 7.500% per annum and (ii) the Net

Funds Cap.

 

                  Class B-1 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate   Class   Principal   Balance of the Class A-1,   Class

A-2A,   Class A-2B,   Class A-3, Class A-4, Class P, Class A-R, Class A-RL,   Class

M-1,   Class M-2,   Class M-3,   Class M-4,   Class M-5, Class M-6, Class M-7, Class

M-8, Class M-9A and Class M-9F   Certificates,   in each case, after giving effect

to payments on such   Distribution   Date and (ii) the Class Principal   Balance of

the Class B-1 Certificates   immediately   prior to such Distribution Date exceeds

(y) the   lesser   of (A)   the   product   of (i)   90.43%   and   (ii)   the   Aggregate

Collateral   Balance for such   Distribution   Date and (B) the amount,   if any, by

which (i) the Aggregate   Collateral   Balance for such   Distribution Date exceeds

(ii) 0.50% of the Aggregate Collateral Balance as of the Cut-off Date.

 

                  Class B-2   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   7.000%   per annum and (ii) the Net Funds   Cap,   and (b) after the

Optional   Termination   Date, the lesser of (i) 7.500% per annum and (ii) the Net

Funds Cap.

 

                  Class B-2 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate   Class   Principal   Balance of the Class A-1,   Class

A-2A,   Class A-2B,   Class A-3, Class A-4, Class P, Class A-R, Class A-RL,   Class

M-1,   Class M-2,   Class M-3,   Class M-4,   Class M-5, Class M-6, Class M-7, Class

M-8,   Class M-9A,   Class M-9F and Class B-1   Certificates,   in each case,   after

giving effect to payments on such Distribution Date and (ii) the Class Principal

Balance of the Class B-2   Certificates   immediately   prior to such   Distribution

Date   exceeds   (y) the   lesser of (A) the   product   of (i)   92.40%   and (ii) the

Aggregate   Collateral   Balance for such Distribution Date and (B) the amount, if

any, by which (i) the Aggregate   Collateral   Balance for such   Distribution Date

exceeds (ii) 0.50% of the Aggregate Collateral Balance as of the Cut-off Date.

 

                  Class M-1   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   5.4841%   per annum and (ii) the Net Funds Cap,   and (b) after the

Optional   Termination Date, the lesser of (i) 5.9841% per annum and (ii) the Net

Funds Cap.

 

                  Class M-1 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate   Class   Principal   Balance of the Class A-1,   Class

A-2A,   Class   A-2B,   Class   A-3,   Class   A-4,   Class P, Class A-R and Class A-RL

Certificates   after giving effect to payments on such Distribution Date and (ii)

the Class Principal   Balance of the Class M-1 Certificates   immediately prior to

such   Distribution   Date exceeds (y) the lesser of (A) the product of (i) 53.14%

and (ii) the Aggregate Collateral Balance for such Distribution Date and (B) the

amount,   if any,   by   which   (i)   the   Aggregate   Collateral   Balance   for   such

Distribution Date exceeds (ii) 0.50% of the Aggregate   Collateral   Balance as of

the Cut-off Date.

 

                  Class M-2   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   5.5906%   per annum and (ii) the Net Funds Cap,   and (b) after the

Optional   Termination Date, the lesser of (i) 6.0906% per annum and (ii) the Net

Funds Cap.

 

                  Class M-2 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate Class A-1, Class A-2A, Class A-2B, Class A-3, Class

A-4,   Class P, Class A-R,   Class A-RL and Class M-1   Certificates   after   giving

effect   to   payments   on such   Distribution   Date and (ii) the   Class   Principal

Balance of the Class M-2   Certificates   immediately   prior to such   Distribution

Date   exceeds   (y) the   lesser of (A) the   product   of (i)   63.50%   and (ii) the

Aggregate   Collateral   Balance for such Distribution Date and (B) the amount, if

any, by which (i) the Aggregate   Collateral   Balance for such   Distribution Date

exceeds (ii) 0.50% of the Aggregate Collateral Balance as of the Cut-off Date.

 

                  Class M-3   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   5.5392%   per annum and (ii) the Net Funds Cap,   and (b) after the

Optional   Termination Date, the lesser of (i) 6.0392% per annum and (ii) the Net

Funds Cap.

 

                  Class M-3 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate   Class   Principal   Balance of the Class A-1,   Class

A-2A,   Class A-2B,   Class A-3, Class A-4, Class P, Class A-R, Class A-RL,   Class

M-1   and   Class   M-2   Certificates   after   giving   effect   to   payments   on such

Distribution   Date   and   (ii) the   Class   Principal   Balance   of the   Class   M-3

Certificates   immediately prior to such Distribution Date exceeds (y) the lesser

of (A) the product of (i) 67.44% and (ii) the Aggregate   Collateral   Balance for

such   Distribution   Date and (B) the amount,   if any, by which (i) the Aggregate

Collateral   Balance   for   such   Distribution   Date   exceeds   (ii)   0.50%   of the

Aggregate Collateral Balance as of the Cut-off Date.

 

                  Class M-4   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   5.7010%   per annum and (ii) the Net Funds Cap,   and (b) after the

Optional   Termination Date, the lesser of (i) 6.2010% per annum and (ii) the Net

Funds Cap.

 

                  Class M-4 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate   Class   Principal   Balance of the Class A-1,   Class

A-2A,   Class A-2B,   Class A-3, Class A-4, Class P, Class A-R, Class A-RL,   Class

M-1,   Class M-2 and Class M-3   Certificates   after giving   effect to payments on

such   Distribution   Date and (ii) the Class   Principal   Balance of the Class M-4

Certificates   immediately prior to such Distribution Date exceeds (y) the lesser

of (A) the product of (i) 72.08% and (ii) the Aggregate   Collateral   Balance for

such   Distribution   Date and (B) the amount,   if any, by which (i) the Aggregate

Collateral   Balance   for   such   Distribution   Date   exceeds   (ii)   0.50%   of the

Aggregate Collateral Balance as of the Cut-off Date.

 

                  Class M-5   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   5.6182%   per annum and (ii) the Net Funds Cap,   and (b) after the

Optional   Termination Date, the lesser of (i) 6.1182% per annum and (ii) the Net

Funds Cap.

 

                  Class M-5 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate   Class   Principal   Balance of the Class A-1,   Class

A-2A,   Class A-2B,   Class A-3, Class A-4, Class P, Class A-R, Class A-RL,   Class

M-1,   Class M-2,   Class M-3 and Class M-4   Certificates   after giving   effect to

payments on such   Distribution   Date and (ii) the Class Principal Balance of the

Class M-5 Certificates   immediately   prior to such Distribution Date exceeds (y)

the lesser of (A) the   product of (i) 76.12% and (ii) the   Aggregate   Collateral

Balance for such   Distribution Date and (B) the amount, if any, by which (i) the

Aggregate   Collateral   Balance for such   Distribution Date exceeds (ii) 0.50% of

the Aggregate Collateral Balance as of the Cut-off Date.

 

                  Class M-6   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   5.7216%   per annum and (ii) the Net Funds Cap,   and (b) after the

Optional   Termination Date, the lesser of (i) 6.2216% per annum and (ii) the Net

Funds Cap.

 

                  Class M-6 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate   Class   Principal   Balance of the Class A-1,   Class

A-2A,   Class A-2B,   Class A-3, Class A-4, Class P, Class A-R, Class A-RL,   Class

M-1,   Class M-2, Class M-3,   Class M-4 and Class M-5   Certificates   after giving

effect   to   payments   on such   Distribution   Date and (ii) the   Class   Principal

Balance of the Class M-6   Certificates   immediately   prior to such   Distribution

Date   exceeds   (y) the   lesser of (A) the   product   of (i)   79.38%   and (ii) the

Aggregate   Collateral   Balance for such Distribution Date and (B) the amount, if

any, by which (i) the Aggregate   Collateral   Balance for such   Distribution Date

exceeds (ii) 0.50% of the Aggregate Collateral Balance as of the Cut-off Date.

 

                  Class M-7   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   5.7657%   per annum and (ii) the Net Funds Cap,   and (b) after the

Optional   Termination Date, the lesser of (i) 6.2657% per annum and (ii) the Net

Funds Cap.

 

                  Class M-7 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate   Class   Principal   Balance of the Class A-1,   Class

A-2A,   Class A-2B,   Class A-3, Class A-4, Class P, Class A-R, Class A-RL,   Class

M-1, Class M-2, Class M-3, Class M-4, Class M-5 and Class M-6 Certificates after

giving effect to payments on such Distribution Date and (ii) the Class Principal

Balance of the Class M-7   Certificates   immediately   prior to such   Distribution

Date   exceeds   (y) the   lesser of (A) the   product   of (i)   82.93%   and (ii) the

Aggregate   Collateral   Balance for such Distribution Date and (B) the amount, if

any, by which (i) the Aggregate   Collateral   Balance for such   Distribution Date

exceeds (ii) 0.50% of the Aggregate Collateral Balance as of the Cut-off Date.

 

                  Class M-8   Pass-Through   Rate:   With   respect   to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   5.9694%   per annum and (ii) the Net Funds Cap,   and (b) after the

Optional   Termination Date, the lesser of (i) 6.4694% per annum and (ii) the Net

Funds Cap.

 

                  Class M-8 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate   Class   Principal   Balance of the Class A-1,   Class

A-2A,   Class A-2B,   Class A-3, Class A-4, Class P, Class A-R, Class A-RL,   Class

M-1,   Class M-2,   Class   M-3,   Class   M-4,   Class   M-5,   Class M-6 and Class M-7

Certificates   after giving effect to payments on such Distribution Date and (ii)

the Class Principal   Balance of the Class M-8 Certificates   immediately prior to

such   Distribution   Date exceeds (y) the lesser of (A) the product of (i) 85.59%

and (ii) the Aggregate Collateral Balance for such Distribution Date and (B) the

amount,   if any,   by   which   (i)   the   Aggregate   Collateral   Balance   for   such

Distribution Date exceeds (ii) 0.50% of the Aggregate   Collateral   Balance as of

the Cut-off Date.

 

                  Class M-9A   Pass-Through   Rate:   With   respect to the   initial

Interest Accrual Period,   based on a LIBOR   determination   date of September 28,

2005,    5.64063%   per   annum.   With   respect   to   any   Interest   Accrual   Period

thereafter, will be a per annum rate equal to the lesser of (i) the sum of LIBOR

plus the related Certificate Margin and (ii) the Net Funds Cap.

 

                  Class M-9 Principal Payment Amount:   For any Distribution Date

on or after the   Stepdown   Date and as long as a Trigger   Event is not in effect

with respect to such Distribution Date, will be the amount, if any, by which (x)

the sum of (i) the aggregate   Class   Principal   Balance of the Class A-1,   Class

A-2A,   Class A-2B,   Class A-3, Class A-4, Class P, Class A-R, Class A-RL,   Class

M-1,   Class M-2, Class M-3, Class M-4, Class M-5, Class M-6, Class M-7 and Class

M-8 Certificates   after giving effect to payments on such   Distribution Date and

(ii) the aggregate Class Principal   Balance of the Class M-9A   Certificates   and

Class M-9F Certificates   immediately prior to such Distribution Date exceeds (y)

the lesser of (A) the   product of (i) 88.85% and (ii) the   Aggregate   Collateral

Balance for such   Distribution Date and (B) the amount, if any, by which (i) the

Aggregate   Collateral   Balance for such   Distribution Date exceeds (ii) 0.50% of

the Aggregate Collateral Balance as of the Cut-off Date.

                  Class M-9F   Pass-Through   Rate:   With   respect to the   initial

Interest   Accrual Period (a) on or prior to the Optional   Termination   Date, the

lesser of (i)   6.4413%   per annum and (ii) the Net Funds Cap,   and (b) after the

Optional   Termination Date, the lesser of (i) 6.9413% per annum and (ii) the Net

Funds Cap.

 

                  Class   X-1    Distributable    Amount:    With    respect   to   any

Distribution   Date, the amount of interest   accrued during the related   Interest

Accrual Period at the related Pass-Through Rate on the Class X-1 Notional Amount

for such Distribution Date.

 

                  Class   X-1    Notional    Amount:    Immediately    prior   to   any

Distribution   Date, with respect to the Class X-1 Certificates,   an amount equal

to the aggregate of the Uncertificated Principal Balances of the REMIC 2 Regular

Interests (other than REMIC 2 Regular Interests MTI-P and MTI-R).

 

                  Class   X-S    Notional    Amount:    Immediately    prior   to   any

Distribution   Date, with respect to the Class X-S Certificates,   an amount equal

to the   Stated   Principal   Balance   of the Ocwen   Serviced   Loans   and   Wilshire

Serviced Loans as of the Due Date in the month of such   Distribution Date (prior

to giving   effect to any Scheduled   Payments due on such Mortgage   Loans on such

Due Date).   For federal   income tax   purposes,   however,   the Class X-S Notional

Amount will equal the Uncertificated Notional Amount of REMIC 2 Regular Interest

MTI-S.

 

                  Class   P   Pass-Through   Rate:   With   respect   to the   Class   P

Certificates   and the   Distribution   Dates for October   2005,   November 2005 and

December 2005 a per annum rate equal to the Initial   Mortgage Loan Net WAC Rate,

and with respect to any Distribution Date thereafter,   a per annum rate equal to

the Net Funds Cap. For federal income tax purposes, however, with respect to any

Distribution   Date,   the Class P   Certificates   will be   entitled to 100% of the

interest accrued on REMIC 2 Regular Interest MTI-P.

 

                  Class Principal   Balance:   With respect to any Class and as to

any date of   determination,   the   aggregate of the   Certificate   Balances of all

Certificates   of such Class as of such date plus, in the case of any Subordinate

Certificates, any increase in the Class Principal Balance of such Class pursuant

to Section 4.02(vii) due to the receipt of Net Recoveries.

 

                  Class R-2 Interest: The sole class of residual interests in

REMIC 2.

 

                  Class R-3 Interest: The sole class of residual interests in

REMIC 3.

 

                   Closing Date: September 30, 2005.

 

                  Code: The Internal Revenue Code of 1986, as the same may be

amended from time to time (or any successor statute thereto).

 

                  Collection Accounts: The accounts established and maintained

by a Servicer in accordance with Section 3.05.

 

                  Collection Period:   With respect to any Distribution Date, the

period from the second day of the month immediately   preceding such Distribution

Date to and including the first day of the month of such Distribution Date.

 

                  Combined   Loan-to-Value   Ratio:   With   respect to any Mortgage

Loan   and   as of   any   date   of   determination,   the   fraction   (expressed   as a

percentage) the numerator of which is the sum of (i) original   principal balance

of the related Mortgage Loan at such date of   determination   and (ii) the unpaid

principal   balance   of   the   related   First   Mortgage   Loan   as of the   date   of

origination   of that   Mortgage   Loan   and the   denominator   of which is (a) with

respect to a   refinanced   Mortgage   Loan,   the   Appraised   Value of the   related

Mortgaged   Property at   origination   and (b) with respect to all other   Mortgage

Loans, the lesser of (i) the Appraised Value of the related Mortgage Property at

origination and (ii) the purchase price of the related Mortgaged Property.

 

                  Compensating   Interest Payment:   For any Distribution Date, an

amount to be paid by the applicable   Servicer for such Distribution   Date, equal

to the   lesser of (i) the sum of (x) an   amount   equal to 0.25% per annum on the

aggregate   Stated   Principal   Balance of the related   Mortgage   Loans   otherwise

payable to the   related   Servicer   on such   Distribution   Date   (prior to giving

effect to any Scheduled Payments due on the Mortgage Loans on such Due Date) and

(y)   any   Prepayment    Interest    Excess   payable   to   such   Servicer   for   such

Distribution Date and (ii) the aggregate   Prepayment   Interest Shortfall for the

Mortgage   Loans being   serviced by the related   Servicer   relating to   Principal

Prepayments received during the related Prepayment Period.

 

                  Corporate Trust Office: The designated office of the Trustee

in the State of New York at which at any particular time its corporate trust

business with respect to this Agreement shall be administered, which office at

the date of the execution of this Agreement is located at 4 New York Plaza, 6th

Floor, New York, New York 10004-2477, Attention: Worldwide Securities

Services/Global Debt: Home Equity Mortgage Trust-2005-4.

 

                  Corresponding Certificate: With respect to (i) REMIC 2 Regular

Interest   MTI-P,   (ii) REMIC 2 Regular   Interest   MTI-R,   (iii)   REMIC 2 Regular

Interest MTI-A-1,   (iv) REMIC 2 Regular Interest   MTI-A-2A,   (v) REMIC 2 Regular

Interest MTI-A-2B,   (vi) REMIC 2 Regular Interest MTI-A-3, (vii) REMIC 2 Regular

Interest MTI-A-4,   (viii) REMIC 2 Regular Interest MTI-M-1, (ix) REMIC 2 Regular

Interest   MTI-M-2,   (x) REMIC 2 Regular Interest   MTI-M-3,   (xi) REMIC 2 Regular

Interest MTI-M-4, (xii) REMIC 2 Regular Interest MTI-M-5, (xiii) REMIC 2 Regular

Interest MTI-M-6,   (xiv) REMIC 2 Regular Interest MTI-M-7,   (xv) REMIC 2 Regular

Interest   MTI-M-8,   (xvi)   REMIC 2 Regular   Interest   MTI-M-9F,   (xvii)   REMIC 2

Regular Interest MTI-M-9A, (xviii) REMIC 2 Regular Interest MTI-B-1, (xix) REMIC

2 Regular   Interest   MTI-B-2 and (xx) REMIC 2 Regular   Interest   MTI-S,   the (i)

Class P Certificates, (ii) Class A-R Certificates, (iii) Class A-1 Certificates,

(iv)   Class   A-2A   Certificates,   (v) Class   A-2B   Certificates,   (vi) Class A-3

Certificates, (vii) Class A-4 Certificates,   (viii) Class M-1 Certificates, (ix)

Class M-2 Certificates, (x) Class M-3 Certificates, (xi) Class M-4 Certificates,

(xii) Class M-5   Certificates,   (xiii) Class M-6   Certificates,   (xiv) Class M-7

Certificates, (xv) Class M-8 Certificates, (xvi) Class M-9F Certificates, (xvii)

Class   M-9A   Certificates,   (xviii)   Class   B-1   Certificates,   (xix)   Class B-2

Certificates and (xx) Class X-S Certificates, respectively.

 

                  Corresponding   Uncertificated Interest: With respect to (a)(i)

REMIC 1 Regular Interest LTI-P and (ii) REMIC 1 Regular   Interest LTI-R,   (b)(i)

REMIC 2   Regular   Interest   MTI-P   and   (ii)   REMIC 2   Regular   Interest   MTI-R,

respectively.

 

                  Credit Insurance Policy:   The credit insurance policy provided

by the Credit Insurance   Provider with respect to the Old Republic Covered Loans

having an initial amount of coverage equal to $11,447,395, and including any and

all related   endorsements,   copies of which are attached hereto as Exhibit BB-1,

or any replacement obtained by IndyMac pursuant to Section 3.23 hereof.

 

                  Credit Insurance Provider:   Old Republic Insurance Company, or

any successor thereto or the named insurer in any replacement policy obtained by

the Servicer pursuant to Section 3.23 hereof.

 

                  Credit   Insurance   Provider   Fee:   The   amount   payable to the

Credit Insurance   Provider in order to obtain coverage provided under the Credit

Insurance   Policy,   such amount being, as to each Old Republic   Covered Loan and

any   Distribution   Date, an amount equal to   one-twelfth   of the related   Credit

Insurance   Provider   Fee Rate on the Net   Proceeds   (as   defined   in the   Credit

Insurance Policy) of the Old Republic Covered Loan.

 

                  Credit Insurance Provider Fee Rate: 1.68% per annum.

 

                  Credit Risk Manager: The Murrayhill Company, a Colorado

corporation.

 

                  Credit Risk Management Agreement: Any of the agreements

between Wilshire Ocwen, IndyMac and the Credit Risk Manager dated as of

September 30, 2005.

 

                  Credit   Risk   Manager   Fee: As to each   Mortgage   Loan and any

Distribution   Date,   an amount equal to one month's   interest at the Credit Risk

Manager Fee Rate on the Stated Principal Balance of such Mortgage Loan as of the

Due Date in the month of such   Distribution   Date (prior to giving effect to any

Scheduled Payments due on such Mortgage Loan on such Due Date).

 

                   Credit Risk Manager Fee Rate: 0.0175% per annum.

 

                  CSFB: Credit Suisse First Boston LLC, a Delaware limited

liability company, and its successors and assigns.

 

                  Cumulative Loss Event: For any Distribution Date, a Cumulative

Loss Event is occurring if Cumulative Net Realized Losses on the Mortgage Loans,

plus the amount by which the total available coverage under the Credit Insurance

Policy has been reduced as of such date,   equal or exceed the   percentage of the

Aggregate   Collateral   Balance as of the Cut-off Date for that Distribution Date

as specified below:

 

 

<table>

<caption>

            Distribution Date                              Percentage of Aggregate Collateral Balance

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

<S>                                          <C>

Ocotber 2005 - September 2008..........                                       N.A.

Ocotber 2008 - September 2009..........      3.85% for the first month, plus an additional 1/12th of 2.10% for each

                                                                       month thereafter

Ocotber 2009 - September 2010..........      5.95% for the first month, plus an additional 1/12th of 1.70% for each

                                                                       month thereafter

Ocotber 2010 - September 2011..........      7.65% for the first month, plus an additional 1/12th of 0.80% for each

                                                                        month thereafter

October 2011 and thereafter............                                      8.45%

</table>

 

 

                  Cumulative    Net    Realized    Losses:    As   to   any    date   of

determination   the   aggregate   amount of   Realized   Losses as reduced by any Net

Recoveries received on Charged Off Loans.

 

                  Current    Interest:    For   any   Class   of    Certificates    and

Distribution    Date,    the   amount   of   interest    accruing   at   the   applicable

Pass-Through Rate on the related Class Principal Balance, or Notional Amount, as

applicable,   of such Class during the related Interest Accrual Period; provided,

that if and to the extent that on any Distribution Date the Interest   Remittance

Amount is less than the   aggregate   distributions   required   pursuant to Section

4.02(b)(i)A-M   without regard to this proviso, then the Current Interest on each

such Class will be reduced,   on a pro rata basis in   proportion to the amount of

Current Interest for each Class without regard to this proviso, by the lesser of

(i) the amount of the   deficiency   described   above in this proviso and (ii) the

related Interest Shortfall for such Distribution Date.

 

                  Curtailment: Any payment of principal on a Mortgage Loan, made

by or on behalf of the   related   Mortgagor,   other than a Scheduled   Payment,   a

prepaid   Scheduled   Payment   or   a   Payoff,   which   is   applied   to   reduce   the

outstanding Stated Principal Balance of the Mortgage Loan.

 

                  Custodial   Agreement:   The agreement,   among the Trustee,   the

related   Custodian   and   the   Depositor   providing   for the   safekeeping   of any

documents   or   instruments   referred   to   in   Section   2.01   on   behalf   of   the

Certificateholders,    attached    hereto   as   Exhibit   R-1   or   Exhibit   R-2,   as

applicable.

 

                  Custodian:   Either of (i) Wells Fargo Bank,   N.A.,   a national

banking   association   or (ii)   LaSalle   Bank   National   Association,   a national

banking association,   or any successor custodian appointed pursuant to the terms

of the related   Custodial   Agreement.   Each Custodian so appointed   shall act as

agent on behalf of the Trustee,   and shall be compensated by the Depositor.   The

Trustee shall remain at all times responsible under the terms of this Agreement,

notwithstanding the fact that certain duties have been assigned to a Custodian.

 

                  Cut-off Date: For any Mortgage Loan, other than a Subsequent

Mortgage Loan, September 1, 2005. For any Subsequent Mortgage Loan, the

applicable Subsequent Transfer Date.

 

                  Cut-off Date Principal Balance: As to any Mortgage Loan, the

Stated Principal Balance thereof as of the close of business on the Cut-off

Date.

 

                  Defective Mortgage Loan: Any Mortgage Loan which is required

to be repurchased pursuant to Section 2.02 or 2.03.

 

                  Deferred   Amount:   For any   Class of Class M   Certificates   or

Class B Certificates and any   Distribution   Date, will equal the amount by which

(x) the aggregate of the Applied Loss Amounts previously applied in reduction of

the Class Principal   Balance thereof exceeds (y) the sum of (i) the aggregate of

amounts   previously   paid in   reimbursement   thereof   and (ii) the amount of the

increase   in the   related   Class   Principal   Balance   due to the   receipt of Net

Recoveries as provided in Section 4.02(vii).

 

                  Definitive Certificates: Any Certificate issued in lieu of a

Book-Entry Certificate pursuant to Section 5.02(e).

 

                  Deleted Mortgage Loan: As defined in Section 2.03.

 

                  Delinquency   Rate: For any month,   a fraction,   expressed as a

percentage,   the   numerator   of which   is the   aggregate   outstanding   principal

balance   of all   Mortgage   Loans   60 or   more   days   delinquent   (including   all

foreclosures   and REO Properties) as of the close of business on the last day of

such month, and the denominator of which is the Aggregate   Collateral Balance as

of the close of business on the last day of such month.

 

                   Denomination: With respect to each Certificate, the amount set

forth   on   the   face   thereof   as   the   "Initial   Certificate   Balance   of   this

Certificate" or the "Initial Notional Amount of this Certificate" or, if neither

of the foregoing, the Percentage Interest appearing on the face thereof.

 

                  Depositor: Credit Suisse First Boston Mortgage Securities

Corp., a Delaware corporation, or its successor in interest.

 

                  Depository:   The initial   Depository   shall be The   Depository

Trust Company,   the nominee of which is CEDE & Co., as the registered   Holder of

the Book-Entry   Certificates.   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 second

Business Day immediately following the 15th day of the month of such

Distribution Date.

 

                  Distribution Date: The 25th day of each month or if such day

is not a Business Day, the first Business Day thereafter, commencing in October

2005.

 

                  DLJMC: DLJ Mortgage Capital, Inc., a Delaware corporation, and

its successors and assigns.

 

                  Due Date: With respect to any Distribution Date and any

Mortgage Loan, the day during the related Due Period on which the Scheduled

Payment is due.

 

                  Due Period: With respect to each Distribution Date, the period

commencing   on   the   second   day   of   the   month   preceding   the   month   of   the

Distribution   Date and ending on the first day of the month of the   Distribution

Date.

 

                  Eligible Account: Either (i) an account or accounts maintained

with a   federal   or state   chartered   depository   institution   or trust   company

acceptable to the Rating Agencies or (ii) an account or accounts the deposits in

which are   insured by the FDIC to the limits   established   by such   corporation,

provided that any such deposits not so insured shall be maintained in an account

at a depository   institution   or trust company whose   commercial   paper or other

short term debt   obligations   (or, in the case of a   depository   institution   or

trust   company   which is the   principal   subsidiary   of a holding   company,   the

commercial   paper or other short term debt   obligations of such holding company)

have been rated by Moody's and Fitch in its highest   short-term   rating category

and by S&P at least   "A-1+",   or (iii) a   segregated   trust   account or accounts

(which shall be a "special deposit account")   maintained with the Trustee or any

other federal or state chartered depository institution or trust company, acting

in its fiduciary capacity,   in a manner acceptable to the Trustee and the Rating

Agencies. Eligible Accounts may bear interest.

 

                  Eligible   Investments:   Any one or more of the obligations and

securities   listed   below which   investment   provides for a date of maturity not

later than the Determination Date in each month:

 

                   (i)       direct obligations of, and obligations fully

         guaranteed by, the United States of America, or any agency or

         instrumentality of the United States of America the obligations of

         which are backed by the full faith and credit of the United States of

         America; or obligations fully guaranteed by, the United States of

         America; Freddie Mac, Fannie Mae, the Federal Home Loan Banks or any

         agency or instrumentality of the United States of America rated AA or

         higher by the Rating Agencies;

 

                  (ii)      federal funds, demand and time deposits in,

         certificates of deposits of, or bankers' acceptances issued by, any

         depository institution or trust company incorporated or organized under

         the laws of the United States of America or any state thereof and

         subject to supervision and examination by federal and/or state banking

         authorities, so long as at the time of such investment or contractual

          commitment providing for such investment the commercial paper or other

         short-term debt obligations of such depository institution or trust

         company (or, in the case of a depository institution or trust company

         which is the principal subsidiary of a holding company, the commercial

         paper or other short-term debt obligations of such holding company) are

         rated in one of two of the highest ratings by each of the Rating

         Agencies, and the long-term debt obligations of such depository

         institution or trust company (or, in the case of a depository

         institution or trust company which is the principal subsidiary of a

         holding company, the long-term debt obligations of such holding

         company) are rated in one of two of the highest ratings, by each of the

         Rating Agencies;

 

                  (iii)     repurchase obligations with a term not to exceed 30

         days with respect to any security described in clause (i) above and

          entered into with a depository institution or trust company (acting as

         a principal) rated "A" or higher by Moody's, "A-1" or higher by S&P and

         "F-1" or higher by Fitch; provided, however, that collateral

         transferred pursuant to such repurchase obligation must be of the type

         described in clause (i) above and must (A) be valued daily at current

         market price plus accrued interest, (B) pursuant to such valuation, be

         equal, at all times, to 105% of the cash transferred by the Trustee in

         exchange for such collateral, and (C) be delivered to the Trustee or,

         if the Trustee is supplying the collateral, an agent for the Trustee,

         in such a manner as to accomplish perfection of a security interest in

         the collateral by possession of certificated securities;

 

                  (iv)      securities bearing interest or sold at a discount

         issued by any corporation incorporated under the laws of the United

         States of America or any state thereof which has a long-term unsecured

         debt rating in the highest available rating category of each of the

         Rating Agencies at the time of such investment;

 

                  (v)       commercial paper having an original maturity of less

         than 365 days and issued by an institution having a short-term

         unsecured debt rating in the highest available rating category of each

         Rating Agency that rates such securities at the time of such

         investment;

 

                  (vi)      a guaranteed investment contract approved by each of

         the Rating Agencies and issued by an insurance company or other

         corporation having a long-term unsecured debt rating in the highest

         available rating category of each of the Rating Agencies at the time of

         such investment;

 

                  (vii)     which may be 12b-1 funds as contemplated under the

         rules promulgated by the Securities and Exchange Commission under the

          Investment Company Act of 1940) having ratings in the highest available

         rating category of Moody's and Fitch and or "AAAm" or "AAAm-G" by S&P

         at the time of such investment (any such money market funds which

         provide for demand withdrawals being conclusively deemed to satisfy any

         maturity requirements for Eligible Investments set forth herein)

         including money market funds of a Servicer or the Trustee and any such

         funds that are managed by a Servicer or the Trustee or their respective

         Affiliates or for a Servicer or the Trustee or any Affiliate of either

         acts as advisor, as long as such money market funds satisfy the

         criteria of this subparagraph (vii); and

 

                  (viii)    such other investments the investment in which will

         not, as evidenced by a letter from each of the Rating Agencies, result

         in the downgrading or withdrawal of the Ratings of the Certificates.

 

provided,   however,   that no such instrument shall be an Eligible   Investment if

such instrument   evidences either (i) a right to receive only interest   payments

with   respect   to the   obligations   underlying   such   instrument,   or (ii)   both

principal   and   interest   payments   derived   from   obligations   underlying   such

instrument   and   the   principal   and   interest   payments   with   respect   to such

instrument   provide a yield to   maturity   of   greater   than 120% of the yield to

maturity at par of such underlying obligations.

 

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

amended.

 

                  ERISA-Restricted Certificates: As specified in the Preliminary

Statement.

 

                  Escrow Account: The separate account or accounts created and

maintained by each Servicer pursuant to Section 3.06.

 

                  Escrow Mortgage Loan: Any Mortgage Loan for which the related

Servicer has established an Escrow Account for items constituting Escrow

Payments.

 

                  Escrow   Payments:   With   respect   to any   Mortgage   Loan,   the

amounts constituting ground rents, taxes, mortgage insurance premiums,   fire and

hazard insurance premiums, and any other payments required to be escrowed by the

Mortgagor   with the mortgagee   pursuant to the Mortgage,   applicable   law or any

other related document.

 

                  Event of Default: As defined in Section 7.01.

 

                  Excess Cashflow Loss Payment: As defined in Section

4.02(b)(iv)(A).

 

                  Excess   Servicing   Fee: With respect to each Mortgage Loan and

any   Distribution   Date,   an amount equal to one month's   interest at the Excess

Servicing Fee Rate on the Class X-S Notional Amount for such Distribution Date.

 

                  Excess   Servicing   Fee   Rate:   With   respect   to the   Wilshire

Serviced Loans,   the excess,   if any, of 0.50% over the "Wilshire   Servicing Fee

Rate" as defined in the   Wilshire   Letter   Agreement.   With respect to the Ocwen

Serviced Loans, the excess, if any, of 0.50% over the "Ocwen Servicing Fee Rate"

as defined in the Ocwen Letter Agreement.

 

                  Expense Fees: As to each Mortgage Loan, the sum of the related

Servicing Fee, the Excess Servicing Fee, the Credit Risk Manager Fee, the Credit

Insurance Provider Fee (if applicable) and the Trustee Fee.

 

                  Expense Fee Rate:   As to each   Mortgage   Loan,   the sum of the

related   Servicing Fee Rate, the Excess   Servicing Fee Rate, if applicable,   the

Credit Risk Manager Fee Rate , the Credit Insurance Provider Fee (if applicable)

and the Trustee Fee Rate.

 

                  Fair   Market   Value:   The   fair   market   value   of   all of the

property of the Trust,   as agreed   upon   between   the   Terminating   Entity and a

majority of the Holders of the Class A-RL Certificates;   provided, however, that

if the   Terminating   Entity   and a   majority   of the   Holders   of the Class A-RL

Certificates   do not agree upon the fair market value of all the property of the

Trust, the Terminating Entity shall solicit,   or cause the solicitation of, good

faith bids for all of the property of the Trust until it has received three bids

from   institutions   that are regular   purchasers and/or sellers in the secondary

market of residential   whole mortgage loans similar to the Mortgage   Loans,   and

the Fair Market Value shall be equal to the highest of such three bids.

 

                  Fannie Mae:   Fannie Mae, a federally   chartered   and privately

owned   corporation   organized and existing under the Federal   National   Mortgage

Association Charter Act, or any successor thereto.

 

                  Fannie Mae Guides: The Fannie Mae Sellers' Guide and the

Fannie Mae Servicers' Guide and all amendments or additions thereto.

 

                  FDIC: The Federal Deposit Insurance Corporation, or any

successor thereto.

 

                   FIRREA: The Financial Institutions Reform, Recovery and

Enforcement Act of 1989.

 

                  First Mortgage Loan: A Mortgage Loan that is secured by a

first lien on the Mortgaged Property securing the related Mortgage Note.

 

                   Fitch: Fitch, Inc., or any successor thereto.

 

                  Foreclosure   Restricted   Loan: Any Mortgage Loan that is 60 or

more days   delinquent   as of the Closing   Date,   unless such   Mortgage   Loan has

become current for three consecutive Scheduled Payments after the Closing Date.

 

                  Freddie Mac: Freddie Mac, a corporate   instrumentality   of the

United States created and existing under Title III of the Emergency Home Finance

Act of 1970, as amended, or any successor thereto.

 

                  Highest Priority:   As of any date of determination,   the Class

of Subordinate   Certificates   then   outstanding   with a Class Principal   Balance

greater than zero,   with the highest   priority for payments   pursuant to Section

4.02, in the following order of decreasing priority: Class M-1, Class M-2, Class

M-3, Class M-4, Class M-5, Class M-6, Class M-7, Class M-8, Class M-9A and Class

M-9F, Class B-1 and Class B-2 Certificates.

 

                  IndyMac: Indymac Bank, F.S.B., a federal savings bank.

 

                  IndyMac Serviced Loans: The Mortgage Loans identified as such

on the Mortgage Loan Schedule.

 

                  Initial   Mortgage   Loan: A Mortgage Loan conveyed to the Trust

on the Closing Date   pursuant to this   Agreement as   identified   on the Mortgage

Loan Schedule delivered to the Trustee on the Closing Date.

 

                  Initial   Mortgage Loan Net WAC Rate: A per annum rate equal to

the weighted average of the Net Mortgage Rates of the Initial Mortgage Loans.

 

                   Indirect   Participant:    A   broker,    dealer,   bank   or   other

financial   institution   or other   Person   that   clears   through or   maintains   a

custodial relationship with a Depository Participant.

 

                  Insurance   Proceeds:   Proceeds due under the Credit   Insurance

Policy,   and proceeds paid under any other Insurance   Policy covering a Mortgage

Loan to the extent the   proceeds are not (i) applied to the   restoration   of the

related   Mortgaged   Property,   (ii) applied to the   satisfaction   of any related

First   Mortgage Loan or (iii)   released to the Mortgagor in accordance   with the

procedures   that the Servicer would follow in servicing   mortgage loans held for

its own account.

 

                  Interest   Accrual   Period:   With respect to each   Distribution

Date, (i) with respect to the Class A-1, Class A-2A,   Class A-2B,   Class A-4 and

Class M-9A   Certificates,   the period   commencing on the   immediately   preceding

Distribution   Date (or the Closing Date,   in the case of the first   Distribution

Date) and ending on the day immediately preceding the related Distribution Date,

and (ii) with respect to the Class A-3,   Class M-1,   Class M-2, Class M-3, Class

M-4, Class M-6,   Class M-7,   Class M-8, Class M-9F,   Class B-1, Class B-2, Class

A-R,   Class A-RL,   Class P, Class X-1 and Class X-S   Certificates,   the calendar

month prior to the month of such Distribution Date.

 

                  Interest   Remittance   Amount:   For any   Distribution   Date, an

amount equal to (1) all interest collected (other than Payaheads, if applicable)

or advanced in respect of Scheduled   Payments on the   Mortgage   Loans during the

related Due Period,   the interest portion of Payaheads   previously   received and

intended for   application in the related Due Period and the interest   portion of

all Payoffs and   Curtailments   received on the Mortgage Loans during the related

Prepayment   Period,   less (x) the Expense   Fee (other than the Excess   Servicing

Fee) with respect to such Mortgage Loans and (y) unreimbursed Advances and other

amounts due to a Servicer or the Trustee with respect to such Mortgage Loans, to

the extent allocable to interest, (2) all Compensating Interest Payments paid by

each   Servicer   with   respect to the   Mortgage   Loans it is   servicing   and such

Distribution   Date,   (3) the portion of any   Substitution   Adjustment   Amount or

Repurchase   Price paid with respect to such   Mortgage   Loans during the calendar

month immediately preceding the Distribution Date allocable to interest, (4) all

Liquidation   Proceeds,   Net   Recoveries   and any   Insurance   Proceeds   and other

recoveries (net of unreimbursed   Advances,   Servicing Advances and expenses,   to

the extent   allocable to interest,   and unpaid   Servicing   Fees)   collected with

respect to the Mortgage   Loans during the prior   calendar   month,   to the extent

allocable   to   interest   and (5) any   amounts   withdrawn   from   the   Capitalized

Interest   Account   to pay   interest   on the   Certificates   with   respect to such

Distribution Date.

 

                   Interest   Shortfall:   For any Distribution Date, the aggregate

shortfall,   if any, in collections of interest for the previous month   (adjusted

to the related Net Mortgage Rate) on Mortgage Loans resulting from (a) Principal

Prepayments   received   during the   related   Prepayment   Period to the extent not

covered   by   Compensating   Interest,   (b)   payments   received   under the   Credit

Insurance   Policy   during   the   related   Prepayment   Period   and (c)   Relief Act

Reductions.

 

                  Last Scheduled Distribution Date: With respect to each Class

of Certificates, the Distribution Date in January 2036.

 

                  Latest   Possible   Maturity   Date:   For purposes of   satisfying

Treasury regulation Section   1.860G-1(a)(4)(iii),   the "latest possible maturity

date" of all interests   created in REMIC 1, REMIC 2 and REMIC 3 shall be January

25, 2036.

 

                  LIBOR:   For any Interest   Accrual   Period other than the first

Interest   Accrual   Period,   the rate for United States   dollar   deposits for one

month which appears on the Dow Jones Telerate Screen Page 3750 as of 11:00 A.M.,

London, England time, on the second LIBOR Business Day prior to the first day of

such Interest Accrual Period. With respect to the first Interest Accrual Period,

the rate for United   States   dollar   deposits for one month which appears on the

Dow Jones Telerate Screen Page 3750 as of 11:00 A.M., London,   England time, two

LIBOR   Business   Days prior to the Closing Date. If such rate does not appear on

such page (or such other page as may replace   that page on that   service,   or if

such service is no longer   offered,   such other service for displaying   LIBOR or

comparable rates as may be reasonably selected by the Trustee), the rate will be

the Reference Bank Rate. If no such   quotations can be obtained and no Reference

Bank Rate is   available,   LIBOR   will be the LIBOR   applicable   to the   Interest

Accrual Period preceding the next applicable Distribution Date.

 

                  LIBOR   Business   Day:   Any day other than (i) a Saturday   or a

Sunday or (ii) a day on which banking   institutions   in the State of New York or

in the city of London, England are required or authorized by law to be closed.

 

                  LIBOR   Certificates:   The Class A-1,   Class A-2A,   Class A-2B,

Class A-4 and Class M-9A Certificates.

 

                  Liquidated   Mortgage   Loan:   With respect to any   Distribution

Date,   a   defaulted   Mortgage   Loan   (including   any   REO   Property)   which   was

liquidated or for which payments under the related   private   mortgage   insurance

policy,   hazard insurance policy or any condemnation   proceeds were received, in

the calendar month preceding the month of such Distribution Date and as to which

the related   Servicer has determined (in accordance with this Agreement) that it

has   received   all   amounts   it   expects   to   receive   in   connection   with   the

liquidation   of such   Mortgage   Loan,   including   the final   disposition   of the

related 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 similar

disposition 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,   in each case,   which,   for the   avoidance   of doubt,   is

remaining after, or not otherwise required to be applied to, the satisfaction of

any related First Mortgage Loan,   less the sum of related   unreimbursed   Expense

Fees, Servicing Advances, Advances and reasonable out-of-pocket expenses.

 

                  Majority in Interest:   As to any Class of Regular Certificates

or the Class   X-2   Certificates,   the   Holders   of   Certificates   of such   Class

evidencing, in the aggregate, at least 51% of the Percentage Interests evidenced

by all Certificates of such Class.

 

                  Majority    Servicer:    The   Servicer    servicing   the   largest

percentage by Stated   Principal   Balance of   outstanding   Mortgage   Loans on the

Optional   Termination Date;   provided,   however,   that if such Servicer does not

exercise its right to purchase the Mortgage Loans under Section 9.01, each other

Servicer,   in sequential   order from the Servicer   servicing the second   largest

percentage,   the   third   largest   percentage,   and so   forth,   to   the   Servicer

servicing the smallest   percentage,   in each case by Stated Principal Balance of

outstanding   Mortgage   Loans   on the   Optional   Termination   Date,   shall be the

Majority Servicer.

 

                  Marker Rate:   With respect to the Class X-1   Certificates   and

any   Distribution   Date,   a per annum rate   equal to two (2) times the   weighted

average of the   Uncertificated   REMIC 2   Pass-Through   Rates for REMIC 2 Regular

Interests MTI-A-1,   MTI-A-2A,   MTI-A-2B,   MTI-A-3,   MTI-A-4,   MTI-M-1,   MTI-M-2,

MTI-M-3,   MTI-M-4,   MTI-M-5,   MTI-M-6,   MTI-M-7,   MTI-M-8,   MTI-M-9F,   MTI-M-9A,

MTI-B-1,   MTI-B-2   and MTI-ZZ,   with the rates on the REMIC 2 Regular   Interests

MTI-A-1,   MTI-A-2A,   MTI-A-2B,   MTI-A-4 and MTI-M-9A,   subject to a cap, for the

purpose   of   this   calculation,   equal   to the   lesser   of (A)   LIBOR   plus   the

Certificate Margin for the Corresponding Certificate and (B) the REMIC 2 Net WAC

Rate,   with the rate on the REMIC 2 Regular   Interest   MTI-A-3 subject to a cap,

for purposes of this   calculation,   equal to the lesser of (A) 4.7420% per annum

on or prior to the   Optional   Termination   Date and   5.2420% per annum after the

Optional Termination Date and (B) the REMIC 2 Net WAC Rate, with the rate on the

REMIC   2   Regular   Interest   MTI-M-1   subject   to a cap,   for   purposes   of this

calculation,   equal to the   lesser of (A)   5.4841%   per annum on or prior to the

Optional   Termination Date and 5.9841% per annum after the Optional   Termination

Date and (B) the   REMIC 2 Net WAC   Rate,   with the rate on the   REMIC 2   Regular

Interest   MTI-M-2 subject to a cap, for purposes of this   calculation,   equal to

the lesser of (A) 5.5906% per annum on or prior to the Optional Termination Date

and 6.0906% per annum after the   Optional   Termination   Date and (B) the REMIC 2

Net WAC Rate, with the rate on the REMIC 2 Regular Interest MTI-M-3 subject to a

cap,   for purposes of this   calculation,   equal to the lesser of (A) 5.5392% per

annum on or prior to the Optional   Termination   Date and 6.0392% per annum after

the Optional Termination Date and (B) the REMIC 2 Net WAC Rate, with the rate on

the REMIC 2 Regular   Interest   MTI-M-4   subject to a cap,   for   purposes of this

calculation,   equal to the   lesser of (A)   5.7010%   per annum on or prior to the

Optional   Termination Date and 6.2010% per annum after the Optional   Termination

Date and (B) the   REMIC 2 Net WAC   Rate,   with the rate on the   REMIC 2   Regular

Interest   MTI-M-5 subject to a cap, for purposes of this   calculation,   equal to

the lesser of (A) 5.6182% per annum on or prior to the Optional Termination Date

and 6.11820% per annum after the Optional   Termination   Date and (B) the REMIC 2

Net WAC Rate, with the rate on the REMIC 2 Regular Interest MTI-M-6 subject to a

cap,   for purposes of this   calculation,   equal to the lesser of (A) 5.7216% per

annum on or prior to the Optional   Termination Date and 6.22160% per annum after

the Optional Termination Date and (B) the REMIC 2 Net WAC Rate, with the rate on

the REMIC 2 Regular   Interest   MTI-M-7   subject to a cap,   for   purposes of this

calculation,   equal to the   lesser of (A)   5.7657%   per annum on or prior to the

Optional   Termination Date and 6.2657% per annum after the Optional   Termination

Date and (B) the   REMIC 2 Net WAC   Rate,   with the rate on the   REMIC 2   Regular

Interest   MTI-M-8 subject to a cap, for purposes of this   calculation,   equal to

the lesser of (A) 5.9694% per annum on or prior to the Optional Termination Date

and 6.4694% per annum after the   Optional   Termination   Date and (B) the REMIC 2

Net WAC Rate, with the rate on the REMIC 2 Regular Interest   MTI-M-9F subject to

a cap, for purposes of this calculation,   equal to the lesser of (A) 6.4413% per

annum on or prior to the Optional   Termination   Date and 6.9413% per annum after

the Optional Termination Date and (B) the REMIC 2 Net WAC Rate, with the rate on

the REMIC 2 Regular   Interest   MTI-B-1   subject to a cap,   for   purposes of this

calculation,   equal to the   lesser of (A)   7.0000%   per annum on or prior to the

Optional   Termination Date and 7.5000% per annum after the Optional   Termination

Date and (B) the   REMIC 2 Net WAC   Rate,   with the rate on the   REMIC 2   Regular

Interest   MTI-B-2 subject to a cap, for purposes of this   calculation,   equal to

the lesser of (A) 7.0000% per annum on or prior to the Optional Termination Date

and 7.5000% per annum after the   Optional   Termination   Date and (B) the REMIC 2

Net WAC Rate and with the rate on the REMIC 2 Regular Interest MTI-ZZ subject to

a cap, for the purpose of this calculation, equal to zero.

 

                  MERS: Mortgage Electronic Registration Systems, Inc., a

corporation organized and existing under the laws of the State of Delaware, or

any successor thereto.

 

                  MERS Mortgage Loan: Any Mortgage Loan registered with MERS on

the MERS System.

 

                  MERS(R) System: The system of recording transfers of Mortgages

electronically maintained by MERS.

 

                  MIN: The Mortgage Identification Number for Mortgage Loans

registered with MERS on the MERS(R) System.

 

                  MOM Loan:   With respect to any Mortgage   Loan,   MERS acting as

the mortgagee of such   Mortgage   Loan,   solely as nominee for the   originator of

such Mortgage Loan and its successors and assigns, at the origination thereof.

 

                  Monthly Excess Cashflow:   For any Distribution Date, an amount

equal    to   the   sum   of   (1)   the    Monthly    Excess    Interest    and   (2)   the

Overcollateralization Release Amount, if any, for such date.

 

                  Monthly Excess Interest: As to any Distribution Date, the sum

of (A) the Interest Remittance Amount remaining after the application of

payments pursuant to clauses A. through M. of Section 4.02(b)(i) plus (B) the

Principal Payment Amount remaining after the application of payments pursuant to

clauses A. through N. of Section 4.02(b)(ii) or (iii).

 

                   Monthly Statement: The statement delivered to the

Certificateholders pursuant to Section 4.06.

 

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

thereto. For purposes of Section 10.05(b) the address for notices to Moody's

shall be Moody's Investors Service, Inc., 99 Church Street, New York, New York

10007, Attention: Residential Pass-Through Monitoring, or such other address as

Moody's may hereafter furnish to the Depositor, the Servicers and the Trustee.

 

                  Mortgage:   The   mortgage,   deed of trust   or other   instrument

creating a first or second lien on an estate in fee simple or leasehold interest

in real property securing a Mortgage Note.

 

                  Mortgage   File:   The   Mortgage   documents   listed   in   Section

2.01(b) hereof   pertaining to a particular   Initial   Mortgage Loan or Subsequent

Mortgage Loan and any additional   documents delivered to the Trustee to be added

to the Mortgage File pursuant to this Agreement.

 

                  Mortgage   Loans:   Such of the mortgage loans   transferred   and

assigned to the Trustee   pursuant to the provisions   hereof as from time to time

are held as a part of the Trust Fund (including any REO Property),   the mortgage

loans so held being   identified in the Mortgage Loan   Schedule,   notwithstanding

foreclosure or other acquisition of title of the related Mortgaged Property.

 

                  Mortgage Loan   Purchase   Price:   The price,   calculated as set

forth in Section 9.01,   to be paid in connection   with the purchase of the Trust

Collateral by the Auction Purchaser.

 

                  Mortgage Loan Schedule:   The Mortgage Loan Schedule which will

list the   Mortgage   Loans (as from time to time amended by the Seller to reflect

the addition of Qualified Substitute Mortgage Loans and the purchase of Mortgage

Loans pursuant to Section 2.01(f),   2.02 or 2.03)   transferred to the Trustee as

part of the Trust Fund and from time to time subject to this Agreement, attached

hereto as Schedule I, setting   forth the following   information   with respect to

each Mortgage Loan:

 

                  (i)       the Mortgage Loan identifying number;

 

                  (ii)      [reserved];

 

                  (iii)     the zip code of the Mortgaged Property;

 

                  (iv)      a code indicating the type of Mortgaged Property and

         the occupancy status.

 

                  (v)       the original months to maturity or the

         remaining months to maturity from the Cut-off Date, in any case based

         on the original amortization schedule and, if different, the maturity

         expressed in the same manner but based on the actual amortization

         schedule;

 

                  (vi)      the Combined Loan-to-Value Ratio at origination;

 

                  (vii)     the Mortgage Rate as of the Cut-off Date;

 

                  (viii)    the stated maturity date;

 

                  (ix)      the amount of the Scheduled Payment as of the Cut-off

         Date;

 

                  (x)       the original principal amount of the Mortgage Loan;

 

                  (xi)      the principal balance of the Mortgage Loan as of the

         close of business on the Cut-off Date, after deduction of payments of

         principal due on or before the Cut-off Date whether or not collected;

 

                   (xii)     a code indicating the purpose of the Mortgage Loan

         (i.e., purchase, rate and term refinance, equity take-out refinance);

 

                  (xiii)    the Net Mortgage Rate as of the Cut-off Date;

 

                  (xiv)     the Originator of the related Mortgage Loan;

 

                  (xv)      the Servicing Fee Rate;

 

                  (xvi)     the related sub-servicer;

 

                  (xvii)    a code indicating whether a Mortgage Loan is subject

         to a Prepayment Charge;

 

                  (xviii)   the amount of the Prepayment Charge with respect to

         each Mortgage Loan and a code identifying whether such Prepayment

         Charge is related to a Curtailment or Payoff;

 

                  (xix)     whether such Mortgage Loan is a Balloon Loan;

 

                  (xx)      whether such Mortgage Loan is a Wilshire Serviced

         Loan, an Ocwen Serviced Loan or an IndyMac Serviced Loan;

 

                  (xxi)     a code indicating whether the Mortgage Loan is a MERS

         Mortgage Loan and, if so, its corresponding MIN; and

 

                  (xxii)    whether such Mortgage Loan is an Old Republic Covered

         Loan.

 

                  With respect to the Mortgage Loans in the aggregate, each, the

Mortgage Loan   Schedule   shall set forth the   following   information,   as of the

Cut-off Date:

 

                  (i)       the number of Mortgage Loans; and

 

                  (ii)      the current aggregate principal balance of the

         Mortgage Loans as of the close of business on the Cut-off Date, after

         deduction of payments of principal due on or before the Cut-off Date

         whether or not collected.

 

                  Mortgage Note: The original executed note or other evidence of

indebtedness evidencing the indebtedness of a Mortgagor under a Mortgage Loan.

 

                  Mortgage Rate: The annual fixed rate of interest borne by a

Mortgage Note.

 

                  Mortgaged Property: The underlying real property securing a

Mortgage Loan.

 

                   Mortgagor: The obligor(s) on a Mortgage Note.

 

                  Net Excess Spread:   With respect to any Distribution   Date and

Loan, a fraction,   expressed as a percentage, the numerator of which is equal to

the excess of (x) the aggregate Stated Principal   Balance for such   Distribution

Date of the Mortgage Loans, multiplied by the weighted average Net Mortgage Rate

of such   Mortgage   Loans   over   (y) the   Interest   Remittance   Amount   for   such

Distribution   Date,   and the   denominator   of   which is an   amount   equal to the

aggregate Stated Principal   Balance for such   Distribution   Date of the Mortgage

Loans,   multiplied by the actual number of days elapsed in the related   Interest

Accrual Period divided by 360.

 

                  Net Funds   Cap:   As to any   Distribution   Date,   will be a per

annum rate equal to (a) a fraction, expressed as a percentage, (a) the numerator

of which is (1) the amount of interest   accrued on the   Mortgage   Loans for such

date, minus (2) the Expense Fee, and (b) the denominator of which is the product

of (i) the Aggregate Collateral Balance immediately   preceding such Distribution

Date (or as of the   Cut-off   Date in the case of the first   Distribution   Date),

multiplied by (ii)(x) in the case of the Class A-3,   Class M-1, Class M-2, Class

M-3, Class M-4,   Class M-5,   Class M-6, Class M-7, Class M-8, Class M-9F,   Class

B-1, Class B-2, Class A-R, Class A-RL and Class P Certificates,   1/12 and (y) in

the case of the Class A-1, Class A-2A,   Class A-2B and Class M-9A   Certificates,

the actual number of days in the related Interest Accrual Period divided by 360.

For federal income tax purposes,   however,   as to any Distribution   Date will be

the   equivalent   of the   foregoing,   expressed   as a per annum rate equal to the

weighted average of the Uncertificated Pass-Through Rates on the REMIC 2 Regular

Interests (other than the REMIC 2 Regular Interest MTI-P and the REMIC 2 Regular

Interest MTI-R)   multiplied by (in the case of the Class A-1, Class A-2A,   Class

A-2B, Class A-4 and Class M-9A   Certificates) 30 divided by the actual number of

days in the related Interest Accrual Period.

 

                  Net Mortgage   Rate: As to each Mortgage Loan, and at any time,

the per annum rate equal to the Mortgage Rate less the related Expense Fee Rate.

 

                  Net Prepayment   Interest   Shortfalls:   As to any   Distribution

Date,   the   amount,   if any,   by which   the   aggregate   of   Prepayment   Interest

Shortfalls   during the   Prepayment   Period   exceeds   the   Compensating   Interest

Payment for such Distribution Date.

 

                  Net   Recovery:   Any   proceeds   received   by   a   Servicer   on a

delinquent or Charged Off Loan (including any Liquidation Proceeds received on a

Charged Off Loan),   net of any   Servicing   Fee,   Ancillary   Income and any other

related expenses.

 

                  Nonrecoverable Advance: Any portion of an Advance or Servicing

Advance previously made or proposed to be made by the applicable   Servicer that,

in the good faith   judgment of the applicable   Servicer,   will not be ultimately

recoverable   by the   applicable   Servicer   from the related   Mortgagor,   related

Liquidation Proceeds or otherwise.

 

                  Notional Amount: The Class X-1 Notional Amount or the Class

X-S Notional Amount, as applicable.

 

                  Notional Amount Certificates: As specified in the Preliminary

Statement.

 

                  Ocwen: Ocwen Loan Servicing, LLC, a Delaware limited liability

company.

 

                  Ocwen Letter   Agreement:   The   securitization   servicing   side

letter agreement,   dated as of September 1, 2005,   between the Seller and Ocwen,

as amended, supplemented or superseded from time to time.

 

                  Ocwen Serviced Loans: The Mortgage Loans identified as such on

the Mortgage Loan Schedule.

 

                  Ocwen   Special   Servicing:   With regard to any Ocwen   Serviced

Loans that become   Charged Off Loans,   the   servicing   of such Charged Off Loans

using specialized collection procedures (including foreclosure,   if appropriate)

to maximize recoveries.

 

                  Offered Certificates: As specified in the Preliminary

Statement.

 

                  Officer's Certificate: A certificate signed by the Chairman of

the Board or the Vice Chairman of the Board or the President or a Vice President

or an Assistant   Vice   President or the Treasurer or the Secretary or one of the

Assistant   Treasurers   or   Assistant   Secretaries   of a   Servicer,   the   Special

Servicer or the Depositor, and delivered to the Depositor or the Trustee, as the

case may be, as required by this Agreement.

 

                  Old Republic   Covered Loan: A Mortgage Loan for which coverage

is available   under the Credit   Insurance   Policy,   as indicated on the Mortgage

Loan Schedule.

 

                  Opinion of Counsel:   A written opinion of counsel,   who may be

counsel for the Depositor or a Servicer,   including in-house counsel, reasonably

acceptable   to   the   Trustee;   provided,   however,   that   with   respect   to   the

interpretation or application of the REMIC Provisions,   such counsel must (i) in

fact be   independent   of the   Depositor   and any   Servicer,   (ii)   not   have any

material   direct   financial   interest in the Depositor or any Servicer or in any

affiliate   of   either,   and (iii) not be   connected   with the   Depositor   or any

Servicer as an   officer,   employee,   promoter,   underwriter,   trustee,   partner,

director or person performing similar functions.

 

                  Optional Termination: The termination of the trust created

hereunder in connection with the purchase of the Mortgage Loans pursuant to

Section 9.01.

 

                  Optional Termination Date: The first date on which the

Optional Termination may be exercised.

 

                  Optional Termination Notice Date: As defined in Section 9.02.

 

                  OTS: The Office of Thrift Supervision.

 

                  Outsourcer: As defined in Section 3.02.

 

                  Outstanding:   With respect to the   Certificates as of any date

of determination,   all Certificates theretofore executed and authenticated under

this Agreement except: (i) Certificates   theretofore   canceled by the Trustee or

delivered to the Trustee for cancellation; and (ii) Certificates in exchange for

which or in lieu of which other Certificates have been executed and delivered by

the Trustee pursuant to this Agreement.

 

                  Outstanding Mortgage Loan: As of any Due Date, a Mortgage Loan

with a Stated Principal Balance greater than zero which was not the subject of a

Payoff   prior to such Due Date and which did not   become a   Liquidated   Mortgage

Loan or Charged Off Loan prior to such Due Date.

 

                  Overcollateralization   Amount:   For any Distribution   Date, an

amount   equal to the   amount,   if any,   by which   (x) the   Aggregate   Collateral

Balance for such   Distribution   Date exceeds (y) the aggregate   Class   Principal

Balance of the Certificates after giving effect to payments on such Distribution

Date.

 

                  Overcollateralization   Release   Amount:   For any   Distribution

Date,   an amount   equal to the   lesser of (x) the   Principal   Remittance   Amount

(without regard to clause (6) of such definition) for such Distribution Date and

(y) the amount, if any, by which (1) the   Overcollateralization   Amount for such

date,   calculated for this purpose on the basis of the   assumption   that 100% of

the   aggregate   of the   Principal   Remittance   Amount and Excess   Cashflow   Loss

Payment for such date is applied on such date in reduction   of the   aggregate of

the Class   Principal   Balances of the   Certificates   (to an amount not less than

zero), exceeds (2) the Targeted Overcollateralization Amount for such date.

 

                  Overfunded   Interest   Amount:   With respect to any   Subsequent

Transfer Date and the Subsequent Mortgage Loans, the excess of (A) the amount on

deposit in the Capitalized   Interest Account on such date over (B) the excess of

(i) the   amount   of   interest   accruing   at (x)   the   assumed   weighted   average

Pass-Through Rates of the Senior Certificates   multiplied by (y) the Pre-Funding

Amount   outstanding at the end of the related Due Period for the total number of

days   remaining   through   the end of the   Interest   Accrual   Periods   ending (a)

October 25, 2005,   (b) November 25, 2005 and (c) December 26, 2005 over (ii) one

month of   investment   earnings   on the   amount   on   deposit   in the   Capitalized

Interest Account on such date at an annual rate of 2.840%.   The assumed weighted

average Pass-Through Rate of the Senior Certificates will be calculated assuming

LIBOR is 3.840% for any   Subsequent   Transfer Date for the   Subsequent   Mortgage

Loans prior to the October 2005   Distribution   Date,   4.240% for any   Subsequent

Transfer   Date for the   Subsequent   Mortgage   Loans prior to the   November   2005

Distribution Date and 4.640% for any Subsequent Transfer Date for the Subsequent

Mortgage Loans prior to the December 2005 Distribution Date.

 

                  Ownership   Interest:   As   to   any   Residual   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.

 

                  Par Value:   As defined in Section 9.01 hereof;   provided   that

the "Par Value" for any Auction Date shall also include the auction   expenses of

the Trustee (which auction expenses shall not exceed $25,000).

 

                  Pass-Through   Rate: With respect to the Class A-1, Class A-2A,

Class A-2B,   Class A-3, Class A-4,   Class A-R,   Class A-RL,   Class P, Class M-1,

Class M-2,   Class M-3,   Class M-4,   Class M-5,   Class M-6, Class M-7, Class M-8,

Class M-9A,   Class   M-9F,   Class B-1 and Class B-2   Certificates,   the Class A-1

Pass-Through   Rate, Class A-2A Pass-Through   Rate, Class A-2B Pass-Through Rate,

Class A-3 Pass-Through Rate, Class A-4 Pass-Through Rate, Class A-R Pass-Through

Rate,   Class   A-RL   Pass-Through   Rate,   Class P   Pass-Through   Rate,   Class M-1

Pass-Through   Rate,   Class M-2 Pass-Through   Rate, Class M-3 Pass-Through   Rate,

Class M-4 Pass-Through Rate, Class M-5 Pass-Through Rate, Class M-6 Pass-Through

Rate,   Class M-7   Pass-Through   Rate,   Class M-8   Pass-Through   Rate, Class M-9A

Pass-Through Rate, Class M-9F Pass-Through Rate, Class B-1 Pass-Through Rate and

Class B-2 Pass-Through Rate.

 

With   respect to the Class X-1   Certificates   and any   Distribution   Date, a per

annum rate equal to the   percentage   equivalent of a fraction,   the numerator of

which is the sum of the amounts   calculated   pursuant to clauses (A) through (S)

below,   and the   denominator   of which is the   aggregate   of the   Uncertificated

Principal Balances of REMIC 2 Regular Interest MTI-AA,   REMIC 2 Regular Interest

MTI-A-1,   REMIC 2 Regular Interest MTI-A-2A,   REMIC 2 Regular Interest MTI-A-2B,

REMIC 2 Regular   Interest   MTI-A-3,   REMIC 2 Regular Interest   MTI-A-4,   REMIC 2

Regular   Interest   MTI-M-1,   REMIC 2 Regular Interest   MTI-M-2,   REMIC 2 Regular

Interest   MTI-M-3,   REMIC 2 Regular Interest   MTI-M-4,   REMIC 2 Regular Interest

MTI-M-5,   REMIC 2 Regular Interest   MTI-M-6,   REMIC 2 Regular Interest   MTI-M-7,

REMIC 2 Regular Interest   MTI-M-8,   REMIC 2 Regular Interest   MTI-M-9A,   REMIC 2

Regular Interest   MTI-M-9F,   REMIC 2 Regular Interest   MTI-B-1,   REMIC 2 Regular

Interest   MTI-B-2   and   REMIC   2   Regular   Interest   MTI-ZZ.    For   purposes   of

calculating the Pass-Through Rate for the Class X-1 Certificates,   the numerator

is equal to the sum of the following components:

 

                  (A)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-AA minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-AA;

 

                  (B)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-A-1 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-A-1;

 

                  (C)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-A-2A minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-A-2A;

 

                  (D)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-A-2B minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-A-2B;

 

                  (E)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-A-3 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-A-3;

 

                  (F)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-A-4 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-A-4;

 

                  (G)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-M-1 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-M-1;

 

                  (H)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-M-2 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-M-2;

 

                  (I)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-M-3 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-M-3;

 

                  (J)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-M-4 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-M-4;

 

                   (K)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-M-5 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-M-5;

 

                  (L)        the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-M-6 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-M-6;

 

                  (M)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-M-7 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-M-7;

 

                  (N)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-M-8 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-M-8;

 

                  (O)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-M-9A minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-M-9A;

 

                  (P)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-M-9F minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-M-9F;

 

                  (Q)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-B-1 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-B-1;

 

                  (R)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-B-2 minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-B-2; and

 

                  (S)       the Uncertificated REMIC 2 Pass-Through Rate for

REMIC 2 Regular Interest MTI-ZZ minus the Marker Rate, applied to an amount

equal to the Uncertificated Principal Balance of REMIC 2 Regular Interest

MTI-ZZ.

 

                  Payahead: Any Scheduled Payment intended by the related

Mortgagor to be applied in a Due Period subsequent to the Due Period in which

such payment was received.

 

                  Payoff:   Any payment of principal on a Mortgage   Loan equal to

the entire   outstanding   Stated   Principal   Balance of such   Mortgage   Loan,   if

received in advance of the last   scheduled   Due Date for such   Mortgage Loan and

accompanied   by an amount of interest   equal to accrued   unpaid   interest on the

Mortgage Loan to the date of such payment-in-full.

 

                  Percentage   Interest:   As to any   Certificate,   the percentage

interest   evidenced thereby in distributions   required to be made on the related

Class, such percentage   interest being set forth on the face thereof or equal to

the percentage   obtained by dividing the Denomination of such Certificate by the

aggregate of the Denominations of all Certificates of the same Class.

 

                  Permitted   Transferee:   Any   person   other than (i) the United

States,   any   State   or   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 (except certain farmers' cooperatives described

in section 521 of the Code) 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) on any excess   inclusions (as defined in section   860E(c)(1) of

the Code) with   respect to any   Residual   Certificate,   (iv) rural   electric and

telephone   cooperatives   described in section   1381(a)(2)(C)   of the Code, (v) a

Person that is not a United   States   Person,   and (vi) a Person   designated as a

non-Permitted   Transferee by the Depositor based upon an Opinion of Counsel that

the Transfer of an Ownership   Interest in a Residual   Certificate to such Person

may cause any REMIC created   hereunder to fail to qualify as a REMIC at any time

that the Certificates   are   outstanding.   The terms "United States," "State" and

"International   Organization"   shall have the meanings set forth in section 7701

of the Code or successor   provisions.   A   corporation   will not be treated as an

instrumentality   of the United   States or of any State or political   subdivision

thereof for these purposes if all of its activities are subject to tax and, with

the   exception   of   Freddie   Mac, a majority   of its board of   directors   is not

selected by such government unit.

 

                  Person:   Any   individual,    corporation,    partnership,   joint

venture,   association,   limited liability company,   joint-stock company,   trust,

unincorporated    organization    or   government,    or   any   agency   or   political

subdivision thereof.

 

                  Physical Certificates: As specified in the Preliminary

Statement.

 

                  Pre-Funding Account: The separate Eligible Account created and

maintained by the Trustee with respect to the Mortgage Loans pursuant to Section

3.05(f) in the name of the Trustee for the benefit of the Certificateholders and

designated   "JPMorgan Chase Bank, N.A., in trust for registered   holders of Home

Equity   Mortgage   Pass-Through   Certificates,    Series   2005-4."   Funds   in   the

Pre-Funding   Account shall be held in trust for the   Certificateholders   for the

uses and   purposes   set forth in this   Agreement   and shall not be a part of any

REMIC created hereunder;   provided,   however,   that any investment income earned

from Eligible   Investments   made with funds in the Pre-Funding   Account shall be

for the account of the Depositor.

 

                  Pre-Funding Amount: The amount deposited in the Pre-Funding

Account on the Closing Date, which shall equal $29,400,300.

 

                  Pre-Funding Period: the period from the Closing Date until the

earliest   of (i) the date on which the   amount   on   deposit   in the   Pre-Funding

Account is reduced to zero, (ii) the date on which an Event of Default occurs or

(iii) December 24, 2005.

 

                  Prepayment   Charge:   With   respect to any Mortgage   Loan,   any

charge   required   to be paid if the   Mortgagor   prepays   such   Mortgage   Loan as

provided in the related Mortgage Note or Mortgage.

 

                  Prepayment    Interest    Excess:    As   to   any   Mortgage   Loan,

Distribution   Date and   Principal   Prepayment   in full during the portion of the

related   Prepayment   Period   occurring from the first day through the fourteenth

day of the calendar   month in which such   Distribution   Date   occurs,   an amount

equal to interest   (to the extent   received)   at the   applicable   Mortgage   Rate

(giving   effect to any   applicable   Relief   Act   Reduction),   as   reduced by the

related   Expense   Fee Rate on the amount of such   Principal   Prepayment   for the

number of days   commencing on the first day of the calendar   month in which such

Distribution   Date   occurs   and   ending   on the   date on   which   such   Principal

Prepayment is so applied;   provided that   Prepayment   Interest Excess shall only

exist with respect to any Mortgage Loan and any Distribution Date if the related

Principal   Prepayment   in full is   deposited by the   applicable   Servicer in the

related   Collection   Account pursuant to Section   3.05(b)(i)   hereof in the same

month   as such   Principal   Prepayment   in   full is   made,   to be   included   with

distributions on such Distribution Date.

 

                  Prepayment   Interest   Shortfall:   As   to   any   Mortgage   Loan,

Distribution Date and Principal Prepayment,   other than Principal Prepayments in

full that occur during the portion of the Prepayment   Period that is in the same

calendar month as the   Distribution   Date,   the difference   between (i) one full

month's   interest   at   the   applicable   Mortgage   Rate   (giving   effect   to   any

applicable   Relief Act   Reduction),   as reduced by the Expense Fee Rate,   on the

Stated   Principal   Balance   of such   Mortgage   Loan   immediately   prior   to such

Principal   Prepayment   and (ii) the amount of interest   actually   received   that

accrued during the month   immediately   preceding such Distribution Date or, with

respect to any Mortgage   Loan with a Due Date other than the first of the month,

the amount of interest   actually   received   that   accrued   during the   one-month

period   immediately   preceding the Due Date following the Principal   Prepayment,

with respect to such Mortgage Loan in connection with such Principal Prepayment.

 

                  Prepayment   Period:   With   respect to each   Distribution   Date

(other than the October 2005 Distribution   Date), each Mortgage Loan (other than

the IndyMac   Serviced Loans) and each Payoff,   the related   "Prepayment   Period"

will   be the   15th of the   month   preceding   the   month   in   which   the   related

Distribution   Date   occurs   through   the 14th of the month in which the   related

Distribution Date occurs.   With respect to the October 2005   Distribution   Date,

each Mortgage Loan (other than the IndyMac Serviced Loans) and each Payoff,   the

related   "Prepayment Period" will be September 1, 2005 through October 14, 2005.

With respect to each   Distribution   Date,   each IndyMac   Serviced   Loan and each

Curtailment   with   respect to the   Wilshire   Serviced   Loans and Ocwen   Serviced

Loans, the related   "Prepayment Period" will be the calendar month preceding the

month in which the related Distribution Date occurs.

 

                  Principal Payment Amount: For any Distribution Date, an amount

equal to the Principal   Remittance   Amount plus any Excess Cashflow Loss Payment

for such date, minus the Overcollateralization   Release Amount, if any, for such

date.

 

                  Principal Prepayment: Any payment of principal on a Mortgage

Loan which constitutes a Payoff or Curtailment.

 

                  Principal   Remittance   Amount:   For any Distribution   Date, an

amount equal to the sum of (1) all principal collected (other than Payaheads) or

advanced in respect of   Scheduled   Payments   on the   Mortgage   Loans   during the

related Due Period (less   unreimbursed   Advances,   Servicing   Advances and other

amounts due to each Servicer and the Trustee with respect to the Mortgage Loans,

to the extent   allocable to principal)   and the   principal   portion of Payaheads

previously   received and intended for application in the related Due Period, (2)

all Principal   Prepayments   on the Mortgage   Loans   received   during the related

Prepayment Period,   (3) the outstanding   principal balance of each Mortgage Loan

that was repurchased by the Seller,   the   Terminating   Entity or the Majority in

Interest   Class X-2   Certificateholder   during the   calendar   month   immediately

preceding such Distribution Date, (4) the portion of any Substitution Adjustment

Amount paid with respect to any Deleted Mortgage Loans during the calendar month

immediately   preceding such   Distribution   Date allocable to principal,   (5) all

Liquidation   Proceeds,   and any Insurance   Proceeds and other recoveries (net of

unreimbursed   Advances,   Servicing   Advances and other   expenses,   to the extent

allocable   to   principal)   and Net   Recoveries   collected   with   respect   to the

Mortgage   Loans   during the prior   calendar   month,   to the extent   allocable to

principal,   (6) amounts   withdrawn   from the Reserve   Account to cover   Realized

Losses on the Mortgage Loans incurred during the related   Collection   Period and

(7) with respect to the Distribution Date in December 2005, the amount remaining

in the Pre-Funding Account at the end of the Pre-Funding Period.

 

                  Prospectus Supplement: The Prospectus Supplement dated

September 29, 2005 relating to the Offered Certificates.

 

                  PUD: Planned Unit Development.

 

                  Qualified   Insurer: A mortgage guaranty insurance company duly

qualified as such under the laws of the state of its principal place of business

and each state   having   jurisdiction   over such insurer in   connection   with the

insurance   policy issued by such insurer,   duly   authorized and licensed in such

states to transact a mortgage guaranty   insurance business in such states and to

write the insurance provided by the insurance policy issued by it, approved as a

Fannie Mae- or Freddie   Mac-approved   mortgage insurer or having a claims paying

ability rating of at least "AA" or equivalent   rating by at least two nationally

recognized   statistical   rating   organizations.   Any   replacement   insurer   with

respect to a Mortgage   Loan must have at least as high a claims   paying   ability

rating as the   insurer it   replaces   had on the Closing   Date.   Any   replacement

insurer with respect to the Credit   Insurance   Policy must be   acceptable to the

Rating Agencies as evidenced by written   acknowledgment   from each Rating Agency

that such replacement will not cause a reduction,   withdrawal or cancellation of

the ratings of the Certificates.

 

                  Qualified    Substitute    Mortgage    Loan:    A   Mortgage    Loan

substituted by the Seller for a Deleted Mortgage Loan which must, on the date of

such substitution,   as confirmed in a Request for Release,   substantially in the

form of Exhibit M (i) have a Stated   Principal   Balance,   after deduction of the

principal portion of the Scheduled Payment due in the month of substitution (or,

in the case of a   substitution   of more   than one   mortgage   loan for a   Deleted

Mortgage Loan, an aggregate principal   balance),   not in excess of, and not more

than 10% less than the Stated   Principal   Balance of the Deleted   Mortgage Loan;

(ii) be accruing interest at a rate no lower than and not more than 1% per annum

higher   than,   that   of   the   Deleted   Mortgage   Loan;   (iii)   have   a   Combined

Loan-to-Value   Ratio no higher than that of the Deleted Mortgage Loan; (iv) have

a remaining   term to   maturity no greater   than (and not more than one year less

than that of) the Deleted Mortgage Loan; and (v) comply with each representation

and warranty set forth in Section 2.03(f).

 

                  Rating   Agency:    Fitch,   Moody's   and   S&P.   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 and the Servicers.   References   herein to a given rating or

rating   category   of a Rating   Agency   shall mean such rating   category   without

giving effect to any modifiers.

 

                  Ratings: As of any date of determination, the ratings, if any,

of the Certificates as assigned by the Rating Agencies.

 

                  Realized Loss: With respect to each Liquidated   Mortgage Loan,

an amount (not less than zero or greater   than the Stated   Principal   Balance of

the Mortgage Loan) as of the date of such   liquidation,   equal to (i) the Stated

Principal   Balance   of the   Liquidated   Mortgage   Loan   as of the   date   of such

liquidation,   plus (ii)   interest at the Net Mortgage   Rate from the related Due

Date as to which interest was last paid or advanced (and not   reimbursed) to the

related   Certificateholders   up to the   related   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 Rate and to principal of the Liquidated   Mortgage Loan. Any Charged Off

Loan will give rise to a Realized   Loss   (calculated   as if clause   (iii) of the

previous   sentence is equal to zero) at the time it is charged off, as described

in Section 3.11(a)(iii) hereof.

 

                  If a Servicer   receives   Net   Recoveries   with   respect to any

Charged Off Loan,   the amount of the Realized   Loss with respect to that Charged

Off Loan will be reduced to the extent such   recoveries are applied to principal

distributions on any Distribution Date.

 

                  Record Date: With respect to the Certificates   (other than the

LIBOR Certificates which are Book-Entry Certificates) and any Distribution Date,

the close of business on the last Business Day of the month   preceding the month

in which such   applicable   Distribution   Date occurs.   With respect to the LIBOR

Certificates   which are Book-Entry   Certificates and any Distribution   Date, the

close of business on the Business Day preceding such Distribution Date.

 

                  Reference   Bank Rate:   With   respect to any   Interest   Accrual

Period, as follows:   the arithmetic mean (rounded upwards, if necessary,   to the

nearest   one   sixteenth   of a percent) of the   offered   rates for United   States

dollar   deposits   for one month which are offered by the   Reference   Banks as of

11:00 A.M., London,   England time, on the second LIBOR Business Day prior to the

first day of such Interest Accrual Period to prime banks in the London interbank

market for a period of one month in amounts approximately equal to the aggregate

Class Principal   Balance of the LIBOR   Certificates;   provided that at least two

such Reference   Banks provide such rate. If fewer than two offered rates appear,

the Reference Bank Rate will be the   arithmetic   mean of the rates quoted by one

or more major banks in New York City, selected by the Trustee, as of 11:00 a.m.,

New York time, on such date for loans in U.S.   Dollars to leading European Banks

for a period of one month in amounts   approximately equal to the aggregate Class

Principal   Balance   of the   LIBOR   Certificates.   If no such   quotations   can be

obtained,   the   Reference   Bank Rate shall be LIBOR   applicable to the preceding

Distribution   Date;   provided however,   that if, under the priorities   indicated

above,   LIBOR for a   Distribution   Date would be based on LIBOR for the previous

Payment Date for the third   consecutive   Distribution   Date,   the Trustee   shall

select an   alternative   comparable   index over which the Trustee has no control,

used for determining   one-month   Eurodollar lending rates that is calculated and

published or otherwise made available by an independent party.

 

                  Reference Banks: Barclays Bank PLC, National Westminster Bank

and Abbey National PLC.

 

                  Regular Certificates: As specified in the Preliminary

Statement.

 

                  Released   Loan:   Any   Charged   Off Loan   that is   released   by

Wilshire   to the Class   X-2   Certificateholders   pursuant   to   Section   3.11(a),

generally on the date that is six months after the date on which Wilshire begins

using Wilshire   Special   Servicing on such Charged Off Loans.   Any Released Loan

will no longer be an asset of any REMIC or the Trust Fund.

 

                  Relief Act: The Servicemembers Civil Relief Act or any similar

state law or regulation.

 

                   Relief Act Reductions:   With respect to any Distribution   Date

and any   Mortgage   Loan as to which there has been a reduction   in the amount of

interest or principal   collectible thereon   (attributable to any previous month)

as a result   of the   application   of the   Relief   Act or   similar   state   law or

regulation,   the   amount,   if   any,   by   which   (i)   interest   and/or   principal

collectible   on such Mortgage Loan for the most recently ended calendar month is

less than (ii) interest and/or principal accrued thereon for such month pursuant

to the Mortgage Note.

 

                  REMIC: A "real estate mortgage investment conduit" within the

meaning of section 860D of the Code.

 

                  REMIC   1:   The   segregated   pool   of   assets   subject   hereto,

constituting the primary trust created hereby and to be administered   hereunder,

with   respect to which a REMIC   election is to be made   consisting   of: (i) such

Mortgage   Loans as from time to time are subject to this   Agreement   (other than

any Prepayment Charges),   together with the Mortgage Files relating thereto, and

together   with   all   collections   thereon   and   proceeds   thereof,   (ii) any REO

Property,   together with all collections thereon and proceeds thereof, (iii) the

Credit Insurance Policy,   (iv) the Trustee's rights with respect to the Mortgage

Loans under all   insurance   policies,   including any Primary   Insurance   Policy,

required to be maintained   pursuant to this   Agreement and any proceeds   thereof

and (v) the Collection Account and the Certificate   Account (subject to the last

sentence of this   definition)   and such assets that are   deposited   therein from

time to   time   and   any   investments   thereof.   Notwithstanding   the   foregoing,

however,   a REMIC   election   will not be made with   respect   to the   Pre-Funding

Account, the Capitalized Interest Account and the Reserve Account.

 

                  REMIC   1   Regular    Interest    LTI-1:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 1 issued hereunder and

designated   as a Regular   Interest   in REMIC 1. REMIC 1 Regular   Interest   LTI-1

shall accrue interest at the related Uncertificated REMIC 1 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   1   Regular   Interest    LTI-PF:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 1 issued hereunder and

designated   as a Regular   Interest in REMIC 1. REMIC 1 Regular   Interest   LTI-PF

shall accrue interest at the related Uncertificated REMIC 1 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   1   Regular    Interest    LTI-P:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 1 issued hereunder and

designated   as a Regular   Interest   in REMIC 1. REMIC 1 Regular   Interest   LTI-P

shall accrue interest at the related Uncertificated REMIC 1 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   1   Regular    Interest    LTI-R:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 1 issued hereunder and

designated   as a Regular   Interest   in REMIC 1. REMIC 1 Regular   Interest   LTI-R

shall accrue interest at the related Uncertificated REMIC 1 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   1   Regular   Interest    LTI-S1:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 1 issued hereunder and

designated   as a Regular   Interest in REMIC 1. REMIC 1 Regular   Interest   LTI-S1

shall accrue interest at the related Uncertificated REMIC 1 Pass-Through Rate in

effect   from   time to time,   and   shall   not be   entitled   to   distributions   of

principal.

 

                  REMIC   1   Regular   Interest    LTI-S2:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 1 issued hereunder and

designated   as a Regular   Interest in REMIC 1. REMIC 1 Regular   Interest   LTI-S2

shall accrue interest at the related Uncertificated REMIC 1 Pass-Through Rate in

effect   from   time to time,   and   shall   not be   entitled   to   distributions   of

principal.

 

                  REMIC 1 Regular Interests: REMIC 1 Regular Interest LTI-1,

LTI-PF, LTI-P, LTI-S1, LTI-S2 and LTI-R.

 

                  REMIC 2: The   segregated   pool of assets   consisting of all of

the REMIC 1 Regular   Interests   conveyed   in the trust to the   Trustee,   for the

benefit   of the   Holders   of the   REMIC 2   Regular   Interests   and the Class A-R

Certificates   (in   respect of the Class R-2   Interest),   pursuant   to Article II

hereunder,   and all amounts deposited therein,   with respect to which a separate

REMIC election is to be made.

 

                  REMIC 2 Net WAC Rate: With respect to any Distribution Date, a

per annum   rate equal to the   weighted   average   of the   Uncertificated   REMIC 1

Pass-Through   Rates on the   REMIC 1 Regular   Interest   LTI-1 and REMIC 1 Regular

Interest   LTI-1PF,   weighted   on the   basis   of such   respective   Uncertificated

Principal Balances thereof immediately preceding such Distribution Date.

 

                  REMIC 2 Regular Interest: Any of the separate non-certificated

beneficial   ownership   interests in REMIC 2 issued hereunder and designated as a

"regular   interest"   in REMIC 2. Each   REMIC 2   Regular   Interest   shall   accrue

interest at the related   Uncertificated REMIC 2 Pass-Through Rate in effect from

time to time, and shall be entitled to   distributions   of principal,   subject to

the terms and   conditions   hereof,   in an aggregate   amount equal to its initial

Uncertificated   Principal   Balance   as set   forth in the   Preliminary   Statement

hereto.   The designations   for the respective REMIC 2 Regular   Interests are set

forth in the Preliminary Statement hereto.

 

                  REMIC 2 Interest Loss Allocation   Amount:   With respect to any

Distribution   Date,   an amount   equal to (a) the   product   of (i) the   aggregate

Stated   Principal   Balance of the Mortgage Loans and related REO Properties then

outstanding and (ii) the   Uncertificated   REMIC 2 Pass-Through   Rate for REMIC 2

Regular Interest MTI-AA minus the Marker Rate, divided by (b) 12.

 

                  REMIC 2 Overcollateralization Amount: With respect to any date

of determination,   (i) 1% of the aggregate   Uncertificated Principal Balances of

the REMIC 2 Regular Interests minus (ii) the aggregate   Uncertificated Principal

Balances of REMIC 2 Regular   Interests   MTI-A-1,   MTI-A-2A,   MTI-A-2B,   MTI-A-3,

MTI-A-4, MTI-M-1, MTI-M-2, MTI-M-3, MTI-M-4, MTI-M-5, MTI-M-6, MTI-M-7, MTI-M-8,

MTI-M-9A,   MTI-M-9F,   MTI-B-1, MTI-B-2, MTI-R and MTI-P, in each case as of such

date of determination.

 

                  REMIC 2 Principal Loss Allocation Amount:   With respect to any

Distribution   Date, an amount equal to the product of (i) the   aggregate   Stated

Principal   Balance   of the   Mortgage   Loans   and   related   REO   Properties   then

outstanding and (ii) 1 minus a fraction, the numerator of which is two times the

aggregate Uncertificated Principal Balance of REMIC 2 Regular Interests MTI-A-1,

MTI-A-2A,   MTI-A-2B,   MTI-A-3,   MTI-A-4,   MTI-M-1,   MTI-M-2,   MTI-M-3,   MTI-M-4,

MTI-M-5, MTI-M-6, MTI-M-7, MTI-M-8, MTI-M-9A,   MTI-M-9F, MTI-B-1 and MTI-B-2 and

the denominator of which is the aggregate   Uncertificated   Principal   Balance of

REMIC   2   Regular   Interests   MTI-A-1,   MTI-A-2A,   MTI-A-2B,   MTI-A-3,   MTI-A-4,

MTI-M-1,    MTI-M-2,    MTI-M-3,   MTI-M-4,   MTI-M-5,   MTI-M-6,   MTI-M-7,   MTI-M-8,

MTI-M-9A, MTI-M-9F, MTI-B-1, MTI-B-2 and MTI-ZZ.

 

                  REMIC   2   Regular   Interest    MTI-AA:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 2 issued hereunder and

designated   as a Regular   Interest in REMIC 2. REMIC 2 Regular   Interest   MTI-AA

shall accrue interest at the related Uncertificated REMIC 2 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   2   Regular   Interest   MTI-A-1:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 2 issued hereunder and

designated as a Regular   Interest in REMIC 2. REMIC 2 Regular   Interest   MTI-A-1

shall accrue interest at the related Uncertificated REMIC 2 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   2   Regular   Interest   MTI-A-2A:   One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 2 issued hereunder and

designated as a Regular Interest in REMIC 2. REMIC 2 Regular   Interest   MTI-A-2A

shall accrue interest at the related Uncertificated REMIC 2 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   2   Regular   Interest   MTI-A-2B:   One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 2 issued hereunder and

designated as a Regular Interest in REMIC 2. REMIC 2 Regular   Interest   MTI-A-2B

shall accrue interest at the related Uncertificated REMIC 2 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   2   Regular   Interest   MTI-A-3:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 2 issued hereunder and

designated as a Regular   Interest in REMIC 2. REMIC 2 Regular   Interest   MTI-A-3

shall accrue interest at the related Uncertificated REMIC 2 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   2   Regular   Interest   MTI-A-4:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 2 issued hereunder and

designated as a Regular   Interest in REMIC 2. REMIC 2 Regular   Interest   MTI-A-4

shall accrue interest at the related Uncertificated REMIC 2 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   2   Regular   Interest   MTI-M-1:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 2 issued hereunder and

designated as a Regular   Interest in REMIC 2. REMIC 2 Regular   Interest   MTI-M-1

shall accrue interest at the related Uncertificated REMIC 2 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial   Uncertificated   Principal   Balance   as set   forth   in   the   Preliminary

Statement hereto.

 

                  REMIC   2   Regular   Interest   MTI-M-2:    One   of   the   separate

non-certificated   beneficial ownership interests in REMIC 2 issued hereunder and

designated as a Regular   Interest in REMIC 2. REMIC 2 Regular   Interest   MTI-M-2

shall accrue interest at the related Uncertificated REMIC 2 Pass-Through Rate in

effect from time to time, and shall be entitled to   distributions   of principal,

subject to the terms and conditions   hereof, in an aggregate amount equal to its

initial