AB MORTGAGE SECURITIES CORP. MBN TRUST SERIES 200_ - __

                                     Issuer

                                       AND

                           [Name of Indenture Trustee]

                                INDENTURE TRUSTEE

                _________________________________________________

                                    INDENTURE

                           Dated as of _____ __, 200_

                _________________________________________________


                              MORTGAGE-BACKED NOTES

                         _______________________________





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                                                 TABLE OF CONTENTS

Section                                                                     Page
-------                                                                     ----

ARTICLE I

   Definitions.................................................................2
   Section 1.01    Definitions.................................................2
   Section 1.02    Incorporation by Reference of Trust Indenture Act...........2
   Section 1.03    Rules of Construction.......................................2

ARTICLE II

   Original Issuance of Notes..................................................4
   Section 2.01    Form........................................................4
   Section 2.02    Execution, Authentication and Delivery......................4

ARTICLE III

   Covenants...................................................................5
   Section 3.01    Collection of Payments with Respect to the Mortgage Loans...5
   Section 3.02    Maintenance of Office or Agency.............................5
   Section 3.03    Money for Payments to Be Held in Trust; Paying Agent........5
   Section 3.04    Existence...................................................6
   Section 3.05    Payment of Principal and Interest; Defaulted Interest.......7
   Section 3.06    Protection of Trust Estate..................................9
   Section 3.07    Opinions as to Trust Estate................................10
   Section 3.08    Performance of Obligations; Servicing Agreement............10
   Section 3.09    Negative Covenants.........................................11
   Section 3.10    Annual Statement as to Compliance..........................11
   Section 3.11    Recording of Assignments...................................12
   Section 3.12    Representations and Warranties Concerning the Mortgage
                   Loans......................................................12
   Section 3.13    Amendments to Servicing Agreement..........................12
   Section 3.14    Master Servicer as Agent and Bailee of the Mortgage
                   Loans Holder...............................................12
   Section 3.15    Investment Company Act.....................................12
   Section 3.16    Issuer May Consolidate, Etc................................13
   Section 3.17    Successor or Transferee....................................14
   Section 3.18    No Other Business..........................................15
   Section 3.19    No Borrowing...............................................15
   Section 3.20    Guarantees, Loans, Advances and Other Liabilities..........15
   Section 3.21    Capital Expenditures.......................................15
   Section 3.22    [Reserved].................................................15
   Section 3.23    Restricted Payments........................................15


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   Section 3.24    Notice of Events of Default................................15
   Section 3.25    Further Instruments and Acts...............................16
   Section 3.26    Statements to Noteholders..................................16
   Section 3.27    Determination of Note Interest Rate........................16
   Section 3.28    Payments under the Credit Enhancement Instrument...........16
   Section 3.29    Replacement Credit Enhancement Instrument..................17

ARTICLE IV

   The Notes; Satisfaction and Discharge of Indenture.........................18
   Section 4.01    The Notes..................................................18
   Section 4.02    Registration of and Limitations on Transfer and Exchange
                   of Notes; Appointment of Certificate Registrar.............18
   Section 4.03    Mutilated, Destroyed, Lost or Stolen Notes.................19
   Section 4.04    Persons Deemed Owners......................................20
   Section 4.05    Cancellation...............................................20
   Section 4.06    Book-Entry Notes...........................................21
   Section 4.07    Notices to Depository......................................21
   Section 4.08    Definitive Notes...........................................22
   Section 4.09    Tax Treatment..............................................22
   Section 4.10    Satisfaction and Discharge of Indenture....................22
   Section 4.11    Application of Trust Money.................................23
   Section 4.12    Subrogation and Cooperation................................24
   Section 4.13    Repayment of Monies Held by Paying Agent...................24
   Section 4.14    Temporary Notes............................................25

ARTICLE V

   Default and Remedies.......................................................26
   Section 5.01    Events of Default..........................................26
   Section 5.02    Acceleration of Maturity; Rescission and Annulment.........26
   Section 5.03    Collection of Indebtedness and Suits for Enforcement by
                   Indenture Trustee..........................................27
   Section 5.04    Remedies; Priorities.......................................29
   Section 5.05    Optional Preservation of the Trust Estate..................31
   Section 5.06    Limitation of Suits........................................31
   Section 5.07    Unconditional Rights of Noteholders to Receive Principal
                   and Interest...............................................32
   Section 5.08    Restoration of Rights and Remedies.........................32
   Section 5.09    Rights and Remedies Cumulative.............................32
   Section 5.10    Delay or Omission Not a Waiver.............................32
   Section 5.11    Control by Noteholders.....................................32
   Section 5.12    Waiver of Past Defaults....................................33


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   Section 5.14    Waiver of Stay or Extension Laws...........................34
   Section 5.15    Sale of Trust Estate.......................................34
   Section 5.16    Action on Notes............................................36
   Section 5.17    Performance and Enforcement of Certain Obligations.........36
ARTICLE VI

   The Indenture Trustee......................................................37
   Section 6.01    Duties of Indenture Trustee................................37
   Section 6.02    Rights of Indenture Trustee................................38
   Section 6.03    Individual Rights of Indenture Trustee.....................38
   Section 6.04    Indenture Trustee's Disclaimer.............................38
   Section 6.05    Notice of Event of Default.................................39
   Section 6.06    Reports by Indenture Trustee to Holders....................39
   Section 6.07    Compensation and Indemnity.................................39
   Section 6.08    Replacement of Indenture Trustee...........................40
   Section 6.09    Successor Indenture Trustee by Merger......................41
   Section 6.10    Appointment of Co-Indenture Trustee or Separate
                   Indenture Trustee..........................................41
   Section 6.11    Eligibility; Disqualification..............................42
   Section 6.12    Preferential Collection of Claims Against Issuer...........42
   Section 6.13    Representation and Warranty................................42
   Section 6.14    Directions to Indenture Trustee............................43
   Section 6.15    [No Consent to Certain Acts of Depositor...................43
   Section 6.16    Indenture Trustee May Own Securities.......................43

ARTICLE VII

   Noteholders' Lists and Reports.............................................44
   Section 7.01    Issuer to Furnish Indenture Trustee Names and Addresses
                   of Noteholders.............................................44
   Section 7.02    Preservation of Information; Communications to Noteholders.44
   Section 7.03    Reports by Issuer..........................................44
   Section 7.04    Reports by Indenture Trustee...............................45

ARTICLE VIII

   Accounts, Disbursements and Releases.......................................46
   Section 8.02    Trust Accounts.............................................46
   Section 8.03    Officer's Certificate......................................47
   Section 8.04    Termination upon Distribution to Noteholders...............47
   Section 8.05    Release of Trust Estate....................................48
   Section 8.06    Surrender of Notes upon Final Payment......................48

ARTICLE IX

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   Supplemental Indentures....................................................49
   Section 9.01    Supplemental Indentures Without Consent of Noteholders.....49
   Section 9.02    Supplemental Indentures with Consent of Noteholders........50
   Section 9.03    Execution of Supplemental Indentures.......................52
   Section 9.04    Effect of Supplemental Indenture...........................52
   Section 9.05    Conformity with Trust Indenture Act........................52
   Section 9.06    Reference in Notes to Supplemental Indentures..............52

ARTICLE X

   Miscellaneous..............................................................53
   Section 10.01   Compliance Certificates and Opinions, Etc..................53
   Section 10.02   Form of Documents Delivered to Indenture Trustee...........55
   Section 10.03   Acts of Noteholders........................................55
   Section 10.04   Notices, Etc., to Indenture Trustee, Issuer, Credit
                   Enhancer and Rating Agencies...............................56
   Section 10.05   Notices to Noteholders; Waiver.............................57
   Section 10.06   Alternate Payment and Notice Provisions....................57
   Section 10.07   Conflict with Trust Indenture Act..........................58
   Section 10.08   Effect of Headings.........................................58
   Section 10.09   Successors and Assigns.....................................58
   Section 10.10   Separability...............................................58
   Section 10.11   Benefits of Indenture......................................58
   Section 10.12   Legal Holidays.............................................58
   Section 10.13   GOVERNING LAW..............................................58
   Section 10.14   Counterparts...............................................59
   Section 10.15   Recording of Indenture.....................................59
   Section 10.16   Issuer Obligation..........................................59
   Section 10.17   No Petition................................................59
   Section 10.18   Inspection.................................................59
   Section 10.19   Authority of the Administrator.............................60



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EXHIBITS

Exhibit A     --     Form of Notes

Appendix A    --     Definitions




                                        v

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     This Indenture, dated as of _______________, between AB Mortgage Securities
Corp. MBN Trust Series 200_ -__, a Delaware business trust, as Issuer (the
"Issuer"), and ____________________________, a ____________________________, as
Indenture Trustee (the "Indenture Trustee"),

                                WITNESSETH THAT:

     Each party hereto agrees as follows for the benefit of the other party and
for the equal and ratable benefit of the Holders of the Issuer's Series 200_-_
Mortgage-Backed Notes (the "Notes").

                                 GRANTING CLAUSE

     The Issuer hereby Grants to the Indenture Trustee at the Closing Date, as
trustee for the benefit of the Holders of the Notes, all of the Issuer's right,
title and interest in and to whether now existing or hereafter created by (a)
the Mortgage Loans and the proceeds thereof, (b) all funds on deposit in the
Funding Account, including all income from the investment and reinvestment of
funds therein, (c) all funds on deposit from time to time in the Collection
Account allocable to the Mortgage Loans excluding any investment income from
such funds; (d) all funds on deposit from time to time in the Payment Account
and in all proceeds thereof; (e) the Policy and (f) all present and future
claims, demands, causes and chooses in action in respect of any or all of the
foregoing and all payments on or under, and all proceeds of every kind and
nature whatsoever in respect of, any or all of the foregoing and all payments on
or under, and all proceeds of every kind and nature whatsoever in the conversion
thereof, voluntary or involuntary, into cash or other liquid property, all cash
proceeds, accounts, accounts receivable, notes, drafts, acceptances, checks,
deposit accounts, rights to payment of any and every kind, and other forms of
obligations and receivables, instruments and other property which at any time
constitute all or part of or are included in the proceeds of any of the
foregoing (collectively, the "Trust Estate" or the "Collateral").

     The foregoing Grant is made in trust to secure the payment of principal of
and interest on, and any other amounts owing in respect of, the Notes, equally
and ratably without prejudice, priority or distinction, and to secure compliance
with the provisions of this Indenture, all as provided in this Indenture.

     The Indenture Trustee, as trustee on behalf of the Holders of the Notes,
acknowledges such Grant, accepts the trust under this Indenture in accordance
with the provisions hereof and agrees to perform its duties as Indenture Trustee
as required herein.




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                                    ARTICLE I

                                   Definitions

     Section 1.01 DEFINITIONS. For all purposes of this Indenture, except as
otherwise expressly provided herein or unless the context otherwise requires,
capitalized terms not otherwise defined herein shall have the meanings assigned
to such terms in the Definitions attached hereto as Appendix A which is
incorporated by reference herein. All other capitalized terms used herein shall
have the meanings specified herein.

     Section 1.02 INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT. Whenever
this Indenture refers to a provision of the Trust Indenture Act (the "TIA"), the
provision is incorporated by reference in and made a part of this Indenture. The
following TIA terms used in this Indenture have the following meanings:

          "Commission" means the Securities and Exchange Commission.

          "indenture securities" means the Notes.

          "indenture security holder" means a Noteholder.

          "indenture to be qualified" means this Indenture.

          "indenture trustee" or "institutional trustee" means the Indenture
     Trustee.

          "obligor" on the indenture securities means the Issuer and any other
     obligor on the indenture securities.

     All other TIA terms used in this Indenture that are defined by the TIA,
defined by TIA reference to another statute or defined by Commission rule have
the meaning assigned to them by such definitions.

     Section 1.03 RULES OF CONSTRUCTION. Unless the context otherwise requires:

          (i) a term has the meaning assigned to it;

          (ii) an accounting term not otherwise defined has the meaning assigned
     to it in accordance with generally accepted accounting principles as in
     effect from time to time;

          (iii) "or" is not exclusive;

          (iv) "including" means including without limitation;



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          (v) words in the singular include the plural and words in the plural
     include the singular; and

          (vi) any agreement, instrument or statute defined or referred to
     herein or in any instrument or certificate delivered in connection herewith
     means such agreement, instrument or statute as from time to time amended,
     modified or supplemented and includes (in the case of agreements or
     instruments) references to all attachments thereto and instruments
     incorporated therein; references to a Person are also to its permitted
     successors and assigns.




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                                   ARTICLE II

                           Original Issuance of Notes

     Section 2.01 FORM. The Notes, together with the Indenture Trustee's
certificate of authentication, shall be in substantially the form set forth in
Exhibit A, with such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Indenture and may have such
letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may, consistently herewith, be determined by the
officers executing such Notes, as evidenced by their execution of the Notes. Any
portion of the text of any Note may be set forth on the reverse thereof, with an
appropriate reference thereto on the face of the Note.

     The Notes shall be typewritten, printed, lithographed or engraved or
produced by any combination of these methods (with or without steel engraved
borders), all as determined by the Authorized Officers executing such Notes, as
evidenced by their execution of such Notes.

     The terms of the Notes set forth in Exhibit A are part of the terms of this
Indenture.

     Section 2.02 EXECUTION, AUTHENTICATION AND DELIVERY. The Notes shall be
executed on behalf of the Issuer by any of its Authorized Officers. The
signature of any such Authorized Officer on the Notes may be manual or
facsimile.

     Notes bearing the manual or facsimile signature of individuals who were at
any time Authorized Officers of the Issuer shall bind the Issuer,
notwithstanding that such individuals or any of them have ceased to hold such
offices prior to the authentication and delivery of such Notes or did not hold
such offices at the date of such Notes.

     The Indenture Trustee shall upon Issuer Request authenticate and deliver
Notes for original issue in an aggregate initial principal amount of
$___________.

     Each Note shall be dated the date of its authentication. The Notes shall be
issuable as registered Notes and the Notes shall be issuable in the minimum
initial Security Balances of $100,000 and in integral multiples of $1,000 in
excess thereof.

     No Note shall be entitled to any benefit under this Indenture or be valid
or obligatory for any purpose, unless there appears on such Note a certificate
of authentication substantially in the form provided for herein executed by the
Indenture Trustee by the manual signature of one of its authorized signatories,
and such certificate upon any Note shall be conclusive evidence, and the only
evidence, that such Note has been duly authenticated and delivered hereunder.




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                                   ARTICLE III

                                    Covenants

     Section 3.01 COLLECTION OF PAYMENTS WITH RESPECT TO THE MORTGAGE LOANS. The
Indenture Trustee shall establish and maintain with itself a trust account (the
"Payment Account") in which the Indenture Trustee shall, subject to the terms of
this paragraph, deposit, on the same day as it is received from the Master
Servicer, each remittance received by the Indenture Trustee with respect to the
Mortgage Loans. The Indenture Trustee shall make all payments of principal of
and interest on the Notes, subject to Section 3.03 as provided in Section 3.05
herein from monies on deposit in the Payment Account.

     Section 3.02 MAINTENANCE OF OFFICE OR AGENCY. The Issuer will maintain in
the [Borough of Manhattan, The City of New York,] an office or agency where,
subject to satisfaction of conditions set forth herein, Notes may be surrendered
for registration of transfer or exchange, and where notices and demands to or
upon the Issuer in respect of the Notes and this Indenture may be served. The
Issuer hereby initially appoints the Indenture Trustee to serve as its agent for
the foregoing purposes. If at any time the Issuer shall fail to maintain any
such office or agency or shall fail to furnish the Indenture Trustee with the
address thereof, such surrenders, notices and demands may be made or served at
the Corporate Trust Office, and the Issuer hereby appoints the Indenture Trustee
as its agent to receive all such surrenders, notices and demands.

     Section 3.03 MONEY FOR PAYMENTS TO BE HELD IN TRUST; PAYING AGENT. (a) As
provided in Section 3.01, all payments of amounts due and payable with respect
to any Notes that are to be made from amounts withdrawn from the Payment Account
pursuant to Section 3.01 shall be made on behalf of the Issuer by the Indenture
Trustee or by the Paying Agent, and no amounts so withdrawn from the Payment
Account for payments of Notes shall be paid over to the Issuer except as
provided in this Section 3.03.

     The Issuer will cause each Paying Agent other than the Indenture Trustee to
execute and deliver to the Indenture Trustee an instrument in which such Paying
Agent shall agree with the Indenture Trustee (and if the Indenture Trustee acts
as Paying Agent it hereby so agrees), subject to the provisions of this Section
3.03, that such Paying Agent will:

          (i) hold all sums held by it for the payment of amounts due with
     respect to the Notes in trust for the benefit of the Persons entitled
     thereto until such sums shall be paid to such Persons or otherwise disposed
     of as herein provided and pay such sums to such Persons as herein provided;

          (ii) give the Indenture Trustee notice of any default by the Issuer of
     which it has actual knowledge in the making of any payment required to be
     made with respect to the Notes;



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          (iii) at any time during the continuance of any such default, upon the
     written request of the Indenture Trustee, forthwith pay to the Indenture
     Trustee all sums so held in trust by such Paying Agent;

          (iv) immediately resign as Paying Agent and forthwith pay to the
     Indenture Trustee all sums held by it in trust for the payment of Notes if
     at any time it ceases to meet the standards required to be met by a Paying
     Agent at the time of its appointment; and

          (v) comply with all requirements of the Code with respect to the
     withholding from any payments made by it on any Notes of any applicable
     withholding taxes imposed thereon and with respect to any applicable
     reporting requirements in connection therewith.

     The Issuer may at any time, for the purpose of obtaining the satisfaction
and discharge of this Indenture or for any other purpose, by Issuer Request
direct any Paying Agent to pay to the Indenture Trustee all sums held in trust
by such Paying Agent, such sums to be held by the Indenture Trustee upon the
same trusts as those upon which the sums were held by such Paying Agent; and
upon such payment by any Paying Agent to the Indenture Trustee, such Paying
Agent shall be released from all further liability with respect to such money.

     Subject to applicable laws with respect to escheat of funds, any money held
by the Indenture Trustee or any Paying Agent in trust for the payment of any
amount due with respect to any Note and remaining unclaimed for one year after
such amount has become due and payable shall be discharged from such trust and
be paid to the Issuer on Issuer Request; and the Holder of such Note shall
thereafter, as an unsecured general creditor, look only to the Issuer for
payment thereof (but only to the extent of the amounts so paid to the Issuer),
and all liability of the Indenture Trustee or such Paying Agent with respect to
such trust money shall thereupon cease; provided, however, that the Indenture
Trustee or such Paying Agent, before being required to make any such repayment,
shall at the expense and direction of the Issuer cause to be published once, in
an Authorized Newspaper published in the English language, notice that such
money remains unclaimed and that, after a date specified therein, which shall
not be less than 30 days from the date of such publication, any unclaimed
balance of such money then remaining will be repaid to the Issuer. The Indenture
Trustee may also adopt and employ, at the expense and direction of the Issuer,
any other reasonable means of notification of such repayment (including, but not
limited to, mailing notice of such repayment to Holders whose Notes have been
called but have not been surrendered for redemption or whose right to or
interest in monies due and payable but not claimed is determinable from the
records of the Indenture Trustee or of any Paying Agent, at the last address of
record for each such Holder).

     Section 3.04 EXISTENCE. The Issuer will keep in full effect its existence,
rights and franchises as a business trust under the laws of the State of
Delaware (unless it becomes, or any successor Issuer hereunder is or becomes,
organized under the laws of any other state or of the United States of America,
in which case the Issuer will keep in full effect its existence, rights and
franchises under the laws of such other jurisdiction) and will obtain and
preserve its qualification to do business in each jurisdiction in which such
qualification is or shall be necessary to protect the


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validity and enforceability of this Indenture, the Notes, the Mortgage Loans and
each other instrument or agreement included in the Trust Estate.

     Section 3.05 PAYMENT OF PRINCIPAL AND INTEREST; DEFAULTED INTEREST. (a) On
each Payment Date from amounts on deposit in the Payment Account after making
(x) any deposit to the Funding Account pursuant to Section 8.02(b) and (y) any
deposits to the Payment Account pursuant to Section 8.02(c)(ii) and Section
8.02(c)(i)(2), the Indenture Trustee shall pay to the Noteholders, the
Certificate Paying Agent, on behalf of the Certificateholders, and to other
Persons the amounts to which they are entitled as set forth below:

          (i) to the Noteholders the sum of (a) one month's interest at the Note
     Interest Rate on the Security Balances of Notes immediately prior to such
     Payment Date and (b) any previously accrued and unpaid interest for prior
     Payment Dates;

          (ii) if such Payment Date is after the Funding Period, to the
     Noteholders, as principal on the Notes, the applicable Security Percentage
     of the Principal Collection Distribution Amount and if such Payment Date is
     the first Payment Date following the end of the Funding Period (if ending
     due to an Amortization Event) or the Payment Date on which the Funding
     Period ends, to the Noteholders as principal on the Notes the applicable
     Security Percentage of the amount deposited from the Funding Account in
     respect of Security Principal Collections;

          (iii) to the Noteholders, as principal on the Notes, from the amount
     remaining on deposit in the Payment Account, up to the applicable Security
     Percentage of Liquidation Loss Amounts for the related Collection Period;

          (iv) to the Noteholders, as principal on the Notes, from the amount
     remaining on deposit in the Payment Account, up to the applicable Security
     Percentage of Carryover Loss Amounts;

          (v) to the Credit Enhancer, in the amount of the premium for the
     Credit Enhancement Instrument and for any Additional Credit Enhancement
     Instrument;

          (vi) to the Credit Enhancer, to reimburse it for prior draws made on
     the Credit Enhancement Instrument and on any Additional Credit Enhancement
     Instrument (with interest thereon as provided in the Insurance Agreement);

          (vii) to the Noteholders, as principal on the Notes based on the
     Security Balances from Security Interest Collections, up to the Special
     Capital Distribution Amount for such Payment Date;

          (viii) to the Credit Enhancer, any other amounts owed to the Credit
     Enhancer pursuant to the Insurance Agreement;


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          (ix) [Reserved];

          (x) to reimburse the Administrator for expenditures made on behalf of
     the Issuer with respect to the performance of its duties under the
     Indenture; and

          (xi) any remaining amount, to the Certificate Paying Agent, on behalf
     of the Certificates.

provided, however, in the event that on a Payment Date a Credit Enhancer Default
shall have occurred and be continuing then the priorities of distributions
described above will be adjusted such that payments of the Certificate
Distribution Amount and all other amounts to be paid to the Certificate Paying
Agent will not be paid until the full amount of interest and principal in
accordance with clauses (i), (x) and (ii) through (iv) above that are due on the
Notes on such Payment Date have been paid and provided, further, that on the
Final Scheduled Payment Date or other final Payment Date, the amount to be paid
pursuant to clause (ii) above shall be equal to the Security Balances of the
Securities immediately prior to such Payment Date.

     On each Payment Date, the Certificate Paying Agent shall deposit in the
Certificate Distribution Account all amounts it received pursuant to this
Section 3.05 for the purpose of distributing such funds to the
Certificateholders.

     The amounts paid to Noteholders shall be paid to each Class in accordance
with the Class Percentage as set forth in paragraph (b) below. Interest will
accrue on the Notes during an Interest Period on the basis of the actual number
of days in such Interest Period and a year assumed to consist of 360 days.

     [Any installment of interest or principal, if any, payable on any Note or
Certificate that is punctually paid or duly provided for by the Issuer on the
applicable Payment Date shall, if such Holder holds Notes or Certificates of an
aggregate initial Principal Balance of at least $1,000,000, be paid to each
Holder of record on the preceding Record Date, by wire transfer to an account
specified in writing by such Holder reasonably satisfactory to the Indenture
Trustee as of the preceding Record Date or in all other cases or if no such
instructions have been delivered to the Indenture Trustee, by check to such
Noteholder mailed to such Holder's address as it appears in the Note Register
the amount required to be distributed to such Holder on such Payment Date
pursuant to such Holder's Securities; provided, however, that the Indenture
Trustee shall not pay to such Holders any amount required to be withheld from a
payment to such Holder by the Code.]

     (b) The principal of each Note shall be due and payable in full on the
Final Scheduled Payment Date for such Note as provided in the form of Note set
forth in Exhibit A. All principal payments on each Class of Notes shall be made
to the Noteholders of such Class entitled thereto in accordance with the
Percentage Interests represented by such Notes. Upon notice to the Indenture
Trustee by the Issuer, the Indenture Trustee shall notify the Person in whose
name a Note is


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registered at the close of business on the Record Date preceding the Final
Scheduled Payment Date or other final Payment Date. Such notice shall be mailed
no later than five Business Days prior to such Final Scheduled Payment Date or
other final Payment Date and shall specify that payment of the principal amount
and any interest due with respect to such Note at the Final Scheduled Payment
Date or other final Payment Date will be payable only upon presentation and
surrender of such Note and shall specify the place where such Note may be
presented and surrendered for such final payment.

     Section 3.06 PROTECTION OF TRUST ESTATE. (a) The Issuer will from time to
time execute and deliver all such supplements and amendments hereto and all such
financing statements, continuation statements, instruments of further assurance
and other instruments, and will take such other action necessary or advisable
to:

          (i) maintain or preserve the lien and security interest (and the
     priority thereof) of this Indenture or carry out more effectively the
     purposes hereof;

          (ii) perfect, publish notice of or protect the validity of any Grant
     made or to be made by this Indenture;

          (iii) cause the Issuer to enforce any of the Mortgage Loans; or

          (iv) preserve and defend title to the Trust Estate and the rights of
     the Indenture Trustee and the Noteholders in such Trust Estate against the
     claims of all persons and parties.

     (b) Except as otherwise provided in this Indenture, the Indenture Trustee
shall not remove any portion of the Trust Estate that consists of money or is
evidenced by an instrument, certificate or other writing from the jurisdiction
in which it was held at the date of the most recent Opinion of Counsel delivered
pursuant to Section 3.07 (or from the jurisdiction in which it was held as
described in the Opinion of Counsel delivered at the Closing Date pursuant to
Section 3.07(a), if no Opinion of Counsel has yet been delivered pursuant to
Section 3.07(b) unless the Trustee shall have first received an Opinion of
Counsel to the effect that the lien and security interest created by this
Indenture with respect to such property will continue to be maintained after
giving effect to such action or actions.

     The Issuer hereby designates the Indenture Trustee its agent and
attorney-in-fact to execute any financing statement, continuation statement or
other instrument required to be executed pursuant to this Section 3.06.



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     Section 3.07 OPINIONS AS TO TRUST ESTATE. (a) On the Closing Date, the
Issuer shall furnish to the Indenture Trustee and the Owner Trustee an Opinion
of Counsel either stating that, in the opinion of such counsel, such action has
been taken with respect to the recording and filing of this Indenture, any
indentures supplemental hereto, and any other requisite documents, and with
respect to the execution and filing of any financing statements and continuation
statements, as are necessary to perfect and make effective the lien and security
interest in the Mortgage Loans and reciting the details of such action, or
stating that, in the opinion of such counsel, no such action is necessary to
make such lien and security interest effective.

     (b) On or before ___________ in each calendar year, beginning in ____, the
Issuer shall furnish to the Indenture Trustee an Opinion of Counsel at the
expense of the Issuer either stating that, in the opinion of such counsel, such
action has been taken with respect to the recording, filing, re-recording and
refiling of this Indenture, any indentures supplemental hereto and any other
requisite documents and with respect to the execution and filing of any
financing statements and continuation statements as is necessary to maintain the
lien and security interest in the Mortgage Loans and reciting the details of
such action or stating that in the opinion of such counsel no such action is
necessary to maintain such lien and security interest. Such Opinion of Counsel
shall also describe the recording, filing, re-recording and refiling of this
Indenture, any indentures supplemental hereto and any other requisite documents
and the execution and filing of any financing statements and continuation
statements that will, in the opinion of such counsel, be required to maintain
the lien and security interest in the Mortgage Loans until December 31 in the
following calendar year.

     Section 3.08 PERFORMANCE OF OBLIGATIONS; SERVICING AGREEMENT. (a) The
Issuer will punctually perform and observe all of its obligations and agreements
contained in this Indenture, the Basic Documents and in the instruments and
agreements included in the Trust Estate.

     (b) The Issuer may contract with other Persons to assist it in performing
its duties under this Indenture, and any performance of such duties by a Person
identified to the Indenture Trustee in an Officer's Certificate of the Issuer
shall be deemed to be action taken by the Issuer. Initially, the Issuer has
contracted with the Administrator to assist the Issuer in performing its duties
under this Indenture.

     (c) The Issuer will not take any action or permit any action to be taken by
others which would release any Person from any of such Person's covenants or
obligations under any of the documents relating to the Mortgage Loans or under
any instrument included in the Trust Estate, or which would result in the
amendment, hypothecation, subordination, termination or discharge of, or impair
the validity or effectiveness of, any of the documents relating to the Mortgage
Loans or any such instrument, except such actions as the Master Servicer is
expressly permitted to take in the Servicing Agreement. The Indenture Trustee,
as pledgee of the Mortgage Loans, shall be able to exercise the rights Issuer
and the Mortgage Loans holder, to direct the actions of the Master Servicer.

     (d) The Issuer shall at all times retain an Administrator (approved by the
Credit Enhancer under the Administration Agreement) and may enter into contracts
with other Persons for the


                                       10

<PAGE>



performance of the Issuer's obligations hereunder, and performance of such
obligations by such Persons shall be deemed to be performance of such
obligations by the Issuer.

     Section 3.09 NEGATIVE COVENANTS. So long as any Notes are Outstanding, the
Issuer shall not:

          (i) except as expressly permitted by this Indenture, sell, transfer,
     exchange or otherwise dispose of the Trust Estate, unless directed to do so
     by the Indenture Trustee;

          (ii) claim any credit on, or make any deduction from the principal or
     interest payable in respect of, the Notes (other than amounts properly
     withheld from such payments under the Code) or assert any claim against any
     present or former Noteholder by reason of the payment of the taxes levied
     or assessed upon any part of the Trust Estate;

          (iii) (A) permit the validity or effectiveness of this Indenture to be
     impaired, or permit the lien of this Indenture to be amended, hypothecated,
     subordinated, terminated or discharged, or permit any Person to be released
     from any covenants or obligations with respect to the Notes under this
     Indenture except as may be expressly permitted hereby, (B) permit any lien,
     charge, excise, claim, security interest, mortgage or other encumbrance
     (other than the lien of this Indenture) to be created on or extend to or
     other wise arise upon or burden the Trust Estate or any part thereof or any
     interest therein or the proceeds thereof or (C) permit the lien of this
     Indenture not to constitute a valid first priority security interest in the
     Trust Estate; or

          (iv) waive or impair, or fail to assert rights under, the Mortgage
     Loans, or impair or cause to be impaired the Company's or the Issuer's
     interest in the Mortgage Loans, the Mortgage Loan Purchase Agreement or in
     any Basic Document, if any such action would materially and adversely
     affect the interests of the Noteholders.

     Section 3.10 ANNUAL STATEMENT AS TO COMPLIANCE. The Issuer will deliver to
the Indenture Trustee, within 120 days after the end of each fiscal year of the
Issuer (commencing with the fiscal year ____), an Officer's Certificate stating,
as to the Authorized Officer signing such Officer's Certificate, that:

          (i) a review of the activities of the Issuer during such year and of
     its performance under this Indenture has been made under such Authorized
     Officer's supervision; and

          (ii) to the best of such Authorized Officer's knowledge, based on such
     review, the Issuer has complied with all conditions and covenants under
     this Indenture throughout such year, or, if there has been a default in its
     compliance with any such condition or covenant, specifying each such
     default known to such Authorized Officer and the nature and status thereof.



                                       11

<PAGE>



     Section 3.11 RECORDING OF ASSIGNMENTS. The Company shall cause the to
exercise its right under the Mortgage Loan Purchase Agreement with respect to
the obligation of the Seller to submit or cause to be submitted for recording
all Assignments of Mortgages on or prior to ______________ with respect to the
Initial Loans and within 60 days following the related Deposit Date with respect
to any Additional Loans.

     Section 3.12 REPRESENTATIONS AND WARRANTIES CONCERNING THE MORTGAGE LOANS.
The Indenture Trustee, as pledgee of the Mortgage Loans, has the benefit of the
representations and warranties made by the Seller in Section [____] and Section
[____] of the Mortgage Loan Purchase Agreement concerning the Mortgage Loans and
the right to enforce the remedies against the Seller provided in such Section
[____] or Section [____] to the same extent as though such representations and
warranties were made directly to the Indenture Trustee.

     Section 3.13 AMENDMENTS TO SERVICING AGREEMENT. The Issuer covenants with
the Indenture Trustee that it will not enter into any amendment or supplement to
the Servicing Agreement in accordance with Section 8.01 of the Servicing
Agreement without the prior written consent of the Indenture Trustee. The
Indenture Trustee, as pledgee of the Mortgage Loans, may, in its discretion,
decline to enter into or consent to any such supplement or amendment if its own
rights, duties or immunities shall be adversely affected.

     Section 3.14 MASTER SERVICER AS AGENT AND BAILEE OF THE MORTGAGE LOANS
HOLDER. Solely for purposes of perfection under Section 9-305 of the Uniform
Commercial Code or other similar applicable law, rule or regulation of the state
in which such property is held by the Master Servicer, the Indenture Trustee
hereby acknowledges that the Master Servicer is acting as agent and bailee of
the Mortgage Loans holder in holding amounts on deposit in the Collection
Account pursuant to Section 3.02 of the Servicing Agreement, as well as its
agent and bailee in holding any Related Documents released to the Master
Servicer pursuant to Section 3.06(c) of the Servicing Agreement, and any other
items constituting a part of the Trust Estate which from time to time come into
the possession of the Master Servicer. It is intended that, by the Master
Servicer's acceptance of such agency pursuant to Section 3.02 of the Servicing
Agreement, the Trustee, as a secured party of the Mortgage Loans, will be deemed
to have possession of such Related Documents, such monies and such other items
for purposes of Section 9-305 of the Uniform Commercial Code of the state in
which such property is held by the Master Servicer.

     Section 3.15 INVESTMENT COMPANY ACT. The Issuer shall not become an
"investment company" or under the "control" of an "investment company" as such
terms are defined in the Investment Company Act of 1940, as amended (or any
successor or amendatory statute), and the rules and regulations thereunder
(taking into account not only the general definition of the term "investment
company" but also any available exceptions to such general definition);
provided, however, that the Issuer shall be in compliance with this Section 3.15
if it shall have obtained an order exempting it from regulation as an
"investment company" so long as it is in compliance with the conditions imposed
in such order.



                                       12

<PAGE>



     Section 3.16 ISSUER MAY CONSOLIDATE, ETC. (a) The Issuer shall not
consolidate or merge with or into any other Person, unless:

          (i) the Person (if other than the Issuer) formed by or surviving such
     consolidation or merger shall be a Person organized and existing under the
     laws of the United States of America or any state or the District of
     Columbia and shall expressly assume, by an indenture supplemental hereto,
     executed and delivered to the Indenture Trustee, in form reasonably
     satisfactory to the Indenture Trustee, the due and punctual payment of the
     principal of and interest on all Notes and to the Certificate Paying Agent,
     on behalf of the Certificateholders and the performance or observance of
     every agreement and covenant of this Indenture on the part of the Issuer to
     be performed or observed, all as provided herein;

          (ii) immediately after giving effect to such transaction, no Event of
     Default shall have occurred and be continuing;

          (iii) the Rating Agencies shall have notified the Issuer that such
     transaction shall not cause the rating of the Notes [or the Certificates]
     to be reduced, suspended or withdrawn or to be considered by either Rating
     Agency to be below investment grade without taking into account the Credit
     Enhancement Instrument;

          (iv) the Issuer shall have received an Opinion of Counsel (and shall
     have delivered copies thereof to the Indenture Trustee) to the effect that
     such transaction will not have any material adverse tax consequence to the
     Issuer, any Noteholder or any Certificateholder;

          (v) any action that is necessary to maintain the lien and security
     interest created by this Indenture shall have been taken; and

          (vi) the Issuer shall have delivered to the Indenture Trustee an
     Officer's Certificate and an Opinion of Counsel each stating that such
     consolidation or merger and such supplemental indenture comply with this
     Article III and that all conditions precedent herein provided for relating
     to such transaction have been complied with (including any filing required
     by the Exchange Act).

     (b) The Issuer shall not convey or transfer any of its properties or
assets, including those included in the Trust Estate, to any Person, unless:

          (i) the Person that acquires by conveyance or transfer the properties
     and assets of the Issuer the conveyance or transfer of which is hereby
     restricted shall (A) be a United States citizen or a Person organized and
     existing under the laws of the United States of America or any state, (B)
     expressly assumes, by an indenture supplemental hereto, executed and
     delivered to the Indenture Trustee, in form satisfactory to the Indenture
     Trustee, the due and punctual payment of the principal of and interest on
     all Notes and the performance or observance of every agreement and covenant
     of this Indenture on the part of the Issuer to be


                                       13

<PAGE>



     performed or observed, all as provided herein, (C) expressly agrees by
     means of such supplemental indenture that all right, title and interest so
     conveyed or transferred shall be subject and subordinate to the rights of
     Holders of the Notes, (D) unless otherwise provided in such supplemental
     indenture, expressly agrees to indemnify, defend and hold harmless the
     Issuer against and from any loss, liability or expense arising under or
     related to this Indenture and the Notes and (E) expressly agrees by means
     of such supplemental indenture that such Person (or if a group of Persons,
     then one specified Person) shall make all filings with the Commission (and
     any other appropriate Person) required by the Exchange Act in connection
     with the Notes;

          (ii) immediately after giving effect to such transaction, no Default
     or Event of Default shall have occurred and be continuing;

          (iii) the Rating Agencies shall have notified the Issuer that such
     transaction shall not cause the rating of the Notes or the Certificates to
     be reduced, suspended or withdrawn;

          (iv) the Issuer shall have received an Opinion of Counsel (and shall
     have delivered copies thereof to the Indenture Trustee) to the effect that
     such transaction will not have any material adverse tax consequence to the
     Issuer or any Noteholder;

          (v) any action that is necessary to maintain the lien and security
     interest created by this Indenture shall have been taken; and

          (vi) the Issuer shall have delivered to the Indenture Trustee an
     Officer's Certificate and an Opinion of Counsel each stating that such
     conveyance or transfer and such supplemental indenture comply with this
     Article III and that all conditions precedent herein provided for relating
     to such transaction have been complied with (including any filing required
     by the Exchange Act).

     Section 3.17 SUCCESSOR OR TRANSFEREE. (a) Upon any consolidation or merger
of the Issuer in accordance with Section 3.16(a), the Person formed by or
surviving such consolidation or merger (if other than the Issuer) shall succeed
to, and be substituted for, and may exercise every right and power of, the
Issuer under this Indenture with the same effect as if such Person had been
named as the Issuer herein.

     (b) Upon a conveyance or transfer of all the assets and properties of the
Issuer pursuant to Section 3.16(b), the Issuer will be released from every
covenant and agreement of this Indenture to be observed or performed on the part
of the Issuer with respect to the Notes immediately upon the delivery of written
notice to the Indenture Trustee of such conveyance or transfer.



                                       14

<PAGE>



     Section 3.18 NO OTHER BUSINESS. The Issuer shall not engage in any business
other than financing, purchasing, owning and selling and managing the Mortgage
Loans and the issuance of the Notes and Certificates in the manner contemplated
by this Indenture and the Basic Documents and all activities incidental thereto.

     Section 3.19 NO BORROWING. The Issuer shall not issue, incur, assume,
guarantee or otherwise become liable, directly or indirectly, for any
indebtedness except for the Notes.

     Section 3.20 GUARANTEES, LOANS, ADVANCES AND OTHER LIABILITIES. Except as
contemplated by this Indenture or the Basic Documents, the Issuer shall not make
any loan or advance or credit to, or guarantee (directly or indirectly or by an
instrument having the effect of assuring another's payment or performance on any
obligation or capability of so doing or otherwise), endorse or otherwise become
contingently liable, directly or indirectly, in connection with the obligations,
stocks or dividends of, or own, purchase, repurchase or acquire (or agree
contingently to do so) any stock, obligations, assets or securities of, or any
other interest in, or make any capital contribution to, any other Person.

     Section 3.21 CAPITAL EXPENDITURES. The Issuer shall not make any
expenditure (by long- term or operating lease or otherwise) for capital assets
(either realty or personalty).

     Section 3.22 [Reserved]

     Section 3.23 RESTRICTED PAYMENTS. The Issuer shall not, directly or
indirectly, (i) pay any dividend or make any distribution (by reduction of
capital or otherwise), whether in cash, property, securities or a combination
thereof, to the Owner Trustee or any owner of a beneficial interest in the
Issuer or otherwise with respect to any ownership or equity interest or security
in or of the Issuer, (ii) redeem, purchase, retire or otherwise acquire for
value any such ownership or equity interest or security or (iii) set aside or
otherwise segregate any amounts for any such purpose; provided, however, that
the Issuer may make, or cause to be made, (x) distributions to the Owner Trustee
and the Certificateholders as contemplated by, and to the extent funds are
available for such purpose under the Trust Agreement, (y) payments to the Master
Servicer pursuant to the terms of the Servicing Agreement and (z) payments to
the Indenture Trustee pursuant to Section 1(a)(ii) of the Administration
Agreement. The Issuer will not, directly or indirectly, make payments to or
distributions from the Collection Account except in accordance with this
Indenture and the Basic Documents.

     Section 3.24 NOTICE OF EVENTS OF DEFAULT. The Issuer shall give the
Indenture Trustee the Credit Enhancer and the Rating Agencies prompt written
notice of each Event of Default hereunder and under the Trust Agreement.



                                       15

<PAGE>



     Section 3.25 FURTHER INSTRUMENTS AND ACTS. Upon request of the Indenture
Trustee, the Issuer will execute and deliver such further instruments and do
such further acts as may be reasonably necessary or proper to carry out more
effectively the purpose of this Indenture.

     Section 3.26 STATEMENTS TO NOTEHOLDERS. The Indenture Trustee and the
Certificate Registrar shall forward by mail to each Noteholder and
Certificateholder, respectively, the Statement delivered to it pursuant to
Section 4.01 of the Servicing Agreement.

     Section 3.27 DETERMINATION OF NOTE INTEREST RATE. On the second LIBOR
Business Day immediately preceding (i) the Closing Date in the case of the first
Interest Period and (ii) the first day of each succeeding Interest Period, the
Indenture Trustee shall determine LIBOR and the Note Interest Rate for such
Interest Period and shall inform the Issuer, the Master Servicer and the
Depositor at their respective facsimile numbers given to the Indenture Trustee
in writing thereof.

     Section 3.28 PAYMENTS UNDER THE CREDIT ENHANCEMENT INSTRUMENT. (a) On any
Payment Date, other than a Dissolution Payment Date, the Indenture Trustee on
behalf of the Noteholders, and in its capacity as Certificate Paying Agent on
behalf of the Certificateholders shall make a draw on the Credit Enhancement
Instrument in an amount if any equal to the sum of (x) the amount by which the
interest accrued at the Note Interest Rate on the Security Balance of the Notes
exceeds the amount on deposit in the Payment Account available to be distributed
therefor on such Payment Date and (y) the Guaranteed Principal Payment Amount
(the "Credit Enhancement Draw Amount").

     (b) The Indenture Trustee shall submit, if a Credit Enhancement Draw Amount
is specified in any Statement to Holders prepared by the Master Servicer
pursuant to Section 4.01 of the Servicing Agreement, the Notice for Payment (as
defined in the Credit Enhancement Instrument) in the amount of the Credit
Enhancement Draw Amount to the Credit Enhancer no later than 2:00 P.M., New York
City time, on the second Business Day prior to the applicable Payment Date. Upon
receipt of such Credit Enhancement Draw Amount in accordance with the terms of
the Credit Enhancement Instrument, the Indenture Trustee shall deposit such
Credit Enhancement Draw Amount in the Payment Account for distribution to
Holders (and the Certificate Paying Agent on behalf of the Certificates)
pursuant to Section 3.05.

     In addition, a draw may be made under the Credit Enhancement Instrument in
respect of any Avoided Payment (as defined in and pursuant to the terms and
conditions of the Credit Enhancement Instrument) and the Indenture Trustee shall
submit a Notice for Payment with respect thereto together with the other
documents required to be delivered to the Credit Enhancer pursuant to the Credit
Enhancement Instrument in connection with a draw in respect of any Avoided
Payment.

     (c) In the event that any Additional Credit Enhancement Instruments are
issued pursuant to Section 4.01 and Section 2.02(B) of the Insurance Agreement,
the Indenture Trustee shall be authorized to make draws thereon subject to the
terms and conditions therein.



                                       16

<PAGE>



     Section 3.29 REPLACEMENT CREDIT ENHANCEMENT INSTRUMENT. In the event of a
Credit Enhancer Default or if the claims paying ability rating of the Credit
Enhancer is downgraded and such downgrade results in a downgrading of the then
current rating of the Securities (in each case, a "Replacement Event"), the
Issuer, at its expense, in accordance with and upon satisfaction of the
conditions set forth in the Credit Enhancement Instrument, including, without
limitation, payment in full of all amounts owed to the Credit Enhancer, may, but
shall not be required to, substitute a new surety bond or surety bonds for the
existing Credit Enhancement Instrument or may arrange for any other form of
credit enhancement; provided, however, that in each case the Notes shall be
rated no lower than the rating assigned by each Rating Agency to the Notes
immediately prior to such Replacement Event and the timing and mechanism for
drawing on such new credit enhancement shall be reasonably acceptable to the
Indenture Trustee and provided further that the premiums under the proposed
credit enhancement shall not exceed such premiums under the existing Credit
Enhancement Instrument. It shall be a condition to substitution of any new
credit enhancement that there be delivered to the Indenture Trustee (i) an
Opinion of Counsel, acceptable in form to the Indenture Trustee, from counsel to
the provider of such new credit enhancement with respect to the enforceability
thereof and such other matters as the Indenture Trustee may require and (ii) an
Opinion of Counsel to the effect that such substitution would not (a) adversely
affect in any material respect the tax status of the Notes or (b) cause the
Issuer to be subject to a tax at the entity level. Upon receipt of the items
referred to above and payment of all amounts owing to the Credit Enhancer and
the taking of physical possession of the new credit enhancement, the Indenture
Trustee shall, within five Business Days following receipt of such items and
such taking of physical possession, deliver the replaced Credit Enhancement
Instrument to the Credit Enhancer. In the event of any such replacement the
Issuer shall give written notice thereof to the Rating Agencies.




                                       17

<PAGE>



                                   ARTICLE IV

               The Notes; Satisfaction and Discharge of Indenture

     Section 4.01 THE NOTES. The Notes shall be registered in the name of a
nominee designated by the Depository. Beneficial Owners will hold interests in
the Notes through the book-entry facilities of the Depository in minimum initial
Principal Balances of $1,000 and integral multiples of $1,000 in excess thereof.

     The Indenture Trustee may for all purposes (including the making of
payments due on the Notes) deal with the Depository as the authorized
representative of the Beneficial Owners with respect to the Notes for the
purposes of exercising the rights of Holders of Notes hereunder. Except as
provided in the next succeeding paragraph of this Section 4.01, the rights of
Beneficial Owners with respect to the Notes shall be limited to those
established by law and agreements between such Beneficial Owners and the
Depository and Depository Participants. Except as provided in Section 4.08,
Beneficial Owners shall not be entitled to definitive certificates for the Notes
as to which they are the Beneficial Owners. Requests and directions from, and
votes of, the Depository as Holder of the Notes shall not be deemed inconsistent
if they are made with respect to different Beneficial Owners. The Indenture
Trustee may establish a reasonable record date in connection with solicitations
of consents from or voting by Noteholders and give notice to the Depository of
such record date. Without the consent of the Issuer and the Indenture Trustee,
no Note may be transferred by the Depository except to a successor Depository
that agrees to hold such Note for the account of the Beneficial Owners.

     In the event the Depository Trust Company resigns or is removed as
Depository, the Indenture Trustee with the approval of the Issuer may appoint a
successor Depository. If no successor Depository has been appointed within 30
days of the effective date of the Depository's resignation or removal, each
Beneficial Owner shall be entitled to certificates representing the Notes it
beneficially owns in the manner prescribed in Section 4.08.

     The Notes shall, on original issue, be executed on behalf of the Issuer by
the Owner Trustee, not in its individual capacity but solely as Owner Trustee,
authenticated by the Note Registrar and delivered by the Indenture Trustee to or
upon the order of the Issuer.

     Section 4.02 REGISTRATION OF AND LIMITATIONS ON TRANSFER AND EXCHANGE OF
NOTES; APPOINTMENT OF CERTIFICATE REGISTRAR. The Issuer shall cause to be kept
at its Corporate Trust Office a Note Register in which, subject to such
reasonable regulations as it may prescribe, the Note Registrar shall provide for
the registration of Notes and of transfers and exchanges of Notes as herein
provided.

     Subject to the restrictions and limitations set forth below, upon surrender
for registration of transfer of any Note at the Corporate Trust Office, the
Indenture Trustee shall execute and the Note Registrar shall authenticate and
deliver, in the name of the designated transferee or transferees, one


                                       18

<PAGE>



or more new Notes in authorized initial Security Balances evidencing the same
aggregate Percentage Interests.

     Subject to the foregoing, at the option of the Noteholders, Notes may be
exchanged for other Notes of like tenor or, in each case in authorized initial
Principal Balances evidencing the same aggregate Percentage Interests upon
surrender of the Notes to be exchanged at the Corporate Trust Office of the Note
Registrar. Whenever any Notes are so surrendered for exchange, the Indenture
Trustee shall execute and the Note Registrar shall authenticate and deliver the
Notes which the Noteholder making the exchange is entitled to receive. Each Note
presented or sur rendered for registration of transfer or exchange shall (if so
required by the Note Registrar) be duly endorsed by, or be accompanied by a
written instrument of transfer in form reasonably satisfactory to the Note
Registrar duly executed by, the Holder thereof or his attorney duly authorized
in writing with such signature guaranteed by a commercial bank or trust company
located or having a correspondent located in the city of New York. Notes
delivered upon any such transfer or exchange will evidence the same obligations,
and will be entitled to the same rights and privileges, as the Notes
surrendered.

     No service charge shall be made for any registration of transfer or
exchange of Notes, but the Note Registrar shall require payment of a sum
sufficient to cover any tax or governmental charge that may be imposed in
connection with any registration of transfer or exchange of Notes.

     All Notes surrendered for registration of transfer and exchange shall be
cancelled by the Note Registrar and delivered to the Indenture Trustee for
subsequent destruction without liability on the part of either.

     The Issuer hereby appoints __________________________________ as
Certificate Registrar to keep at its Corporate Trust Office a Certificate
Register pursuant to Section 3.09 of the Trust Agreement in which, subject to
such reasonable regulations as it may prescribe, the Certificate Registrar shall
provide for the registration of Certificates and of transfers and exchanges
thereof pursuant to Section 3.05 of the Trust Agreement.
__________________________________ hereby accepts such appointment.

     Section 4.03 MUTILATED, DESTROYED, LOST OR STOLEN NOTES. If (i) any
mutilated Note is surrendered to the Indenture Trustee, or the Indenture Trustee
receives evidence to its satisfaction of the destruction, loss or theft of any
Note, and (ii) there is delivered to the Indenture Trustee such security or
indemnity as may be required by it to hold the Issuer and the Indenture Trustee
harmless, then, in the absence of notice to the Issuer, the Note Registrar or
the Indenture Trustee that such Note has been acquired by a bona fide purchaser,
and provided that the requirements of Section 8-405 of the UCC are met, the
Issuer shall execute, and upon its request the Indenture Trustee shall
authenticate and deliver, in exchange for or in lieu of any such mutilated,
destroyed, lost or stolen Note, a replacement Note of the same Class; provided,
however, that if any such destroyed, lost or stolen Note, but not a mutilated
Note, shall have become or within seven days shall be due and payable, instead
of issuing a replacement Note, the Issuer may pay such destroyed, lost or stolen
Note when so due or payable without surrender thereof. If, after the delivery of
such replacement


                                       19

<PAGE>



Note or payment of a destroyed, lost or stolen Note pursuant to the proviso to
the preceding sentence, a bona fide purchaser of the original Note in lieu of
which such replacement Note was issued presents for payment such original Note,
the Issuer and the Indenture Trustee shall be entitled to recover such
replacement Note (or such payment) from the Person to whom it was delivered or
any Person taking such replacement Note from such Person to whom such
replacement Note was delivered or any assignee of such Person, except a bona
fide purchaser, and shall be entitled to recover upon the security or indemnity
provided therefor to the extent of any loss, damage, cost or expense incurred by
the Issuer or the Indenture Trustee in connection therewith.

     Upon the issuance of any replacement Note under this Section 4.03, the
Issuer may require the payment by the Holder of such Note of a sum sufficient to
cover any tax or other governmental charge that may be imposed in relation
thereto and any other reasonable expenses (including the fees and expenses of
the Indenture Trustee) connected therewith.

     Every replacement Note issued pursuant to this Section 4.03 in replacement
of any mutilated, destroyed, lost or stolen Note shall constitute an original
additional contractual obligation of the Issuer, whether or not the mutilated,
destroyed, lost or stolen Note shall be at any time enforceable by anyone, and
shall be entitled to all the benefits of this Indenture equally and
proportionately with any and all other Notes duly issued hereunder.

     The provisions of this Section 4.03 are exclusive and shall preclude (to
the extent lawful) all other rights and remedies with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Notes.

     Section 4.04 PERSONS DEEMED OWNERS. Prior to due presentment for
registration of transfer of any Note, the Issuer, the Indenture Trustee and any
agent of the Issuer or the Indenture Trustee may treat the Person in whose name
any Note is registered (as of the day of determination) as the owner of such
Note for the purpose of receiving payments of principal of and interest, if any,
on such Note and for all other purposes whatsoever, whether or not such Note be
overdue, and neither the Issuer, the Indenture Trustee nor any agent of the
Issuer or the Indenture Trustee shall be affected by notice to the contrary.

     Section 4.05 CANCELLATION. All Notes surrendered for payment, registration
of transfer, exchange or redemption shall, if surrendered to any Person other
than the Indenture Trustee, be delivered to the Indenture Trustee and shall be
promptly cancelled by the Indenture Trustee. The Issuer may at any time deliver
to the Indenture Trustee for cancellation any Notes previously authenticated and
delivered hereunder which the Issuer may have acquired in any manner whatsoever,
and all Notes so delivered shall be promptly cancelled by the Indenture Trustee.
No Notes shall be authenticated in lieu of or in exchange for any Notes
cancelled as provided in this Section 4.05, except as expressly permitted by
this Indenture. All cancelled Notes may be held or disposed of by the Indenture
Trustee in accordance with its standard retention or disposal policy as in
effect at the time unless the Issuer shall direct by an Issuer Request that they
be destroyed or returned to it; provided however, that such Issuer Request is
timely and the Notes have not been


                                       20

<PAGE>



previously disposed of by the Indenture Trustee.

     Section 4.06 BOOK-ENTRY NOTES. The Notes, upon original issuance, will be
issued in the form of typewritten Notes representing the Book-Entry Notes, to be
delivered to The Depository Trust Company, the initial Depository, by, or on
behalf of, the Issuer. Such Notes shall initially be registered on the Note
Register in the name of Cede & Co., the nominee of the initial Depository, and
no Beneficial Owner will receive a Definitive Note representing such Beneficial
Owner's interest in such Note, except as provided in Section 4.08. Unless and
until definitive, fully registered Notes (the "Definitive Notes") have been
issued to Beneficial Owners pursuant to Section 4.08:

          (i) the provisions of this Section 4.06 shall be in full force and
     effect;

          (ii) the Note Registrar and the Indenture Trustee shall be entitled to
     deal with the Depository for all purposes of this Indenture (including the
     payment of principal of and interest on the Notes and the giving of
     instructions or directions hereunder) as the sole holder of the Notes, and
     shall have no obligation to the Owners of Notes;

          (iii) to the extent that the provisions of this Section 4.06 conflict
     with any other provisions of this Indenture, the provisions of this Section
     4.06 shall control;

          (iv) the rights of Beneficial Owners shall be exercised only through
     the Depository and shall be limited to those established by law and
     agreements between such Owners of Notes and the Depository and/or the
     Depository Participants. Unless and until Definitive Notes are issued
     pursuant to Section 4.08, the initial Depository will make book-entry
     transfers among the Depository Participants and receive and transmit
     payments of principal of and interest on the Notes to such Depository
     Participants; and

          (v) whenever this Indenture requires or permits actions to be taken
     based upon instructions or directions of Holders of Notes evidencing a
     specified percentage of the Security Balances of the Notes, the Depository
     shall be deemed to represent such percentage only to the extent that it has
     received instructions to such effect from Beneficial Owners and/or
     Depository Participants owning or representing, respectively, such required
     percentage of the beneficial interest in the Notes and has delivered such
     instructions to the Indenture Trustee.

     Section 4.07 NOTICES TO DEPOSITORY. Whenever a notice or other
communication to the Note Holders is required under this Indenture, unless and
until Definitive Notes shall have been issued to Beneficial Owners pursuant to
Section 4.08, the Indenture Trustee shall give all such notices and
communications specified herein to be given to Holders of the Notes to the
Depository, and shall have no obligation to the Beneficial Owners.



                                       21

<PAGE>



     Section 4.08 DEFINITIVE NOTES. If (i) the Administrator advises the
Indenture Trustee in writing that the Depository is no longer willing or able to
properly discharge its responsibilities with respect to the Notes and the
Administrator is unable to locate a qualified successor, (ii) the Administrator
at its option advises the Indenture Trustee in writing that it elects to
terminate the book-entry system through the Depository or (iii) after the
occurrence of an Event of Default, Owners of Notes representing beneficial
interests aggregating at least a majority of the Security Balances of the Notes
advise the Depository in writing that the continuation of a book-entry system
through the Depository is no longer in the best interests of the Beneficial
Owners, then the Depository shall notify all Beneficial Owners and the Indenture
Trustee of the occurrence of any such event and of the availability of
Definitive Notes to Beneficial Owners requesting the same. Upon surrender to the
Indenture Trustee of the typewritten Notes representing the Book-Entry Notes by
the Depository, accompanied by registration instructions, the Issuer shall
execute and the Indenture Trustee shall authenticate the Definitive Notes in
accordance with the instructions of the Depository. None of the Issuer, the Note
Registrar or the Indenture Trustee shall be liable for any delay in delivery of
such instructions and may conclusively rely on, and shall be protected in
relying on, such instructions. Upon the issuance of Definitive Notes, the
Indenture Trustee shall recognize the Holders of the Definitive Notes as
Noteholders.

     Section 4.09 TAX TREATMENT. The Issuer has entered into this Indenture, and
the Notes will be issued, with the intention that, for federal, state and local
income, single business and franchise tax purposes, the Notes will qualify as
indebtedness of the Issuer. The Issuer, by entering into this Indenture, and
each Noteholder, by its acceptance of its Note (and each Beneficial Owner by its
acceptance of an interest in the applicable Book-Entry Note), agree to treat the
Notes for federal, state and local income, single business and franchise tax
purposes as indebtedness of the Issuer.

     Section 4.10 SATISFACTION AND DISCHARGE OF INDENTURE. This Indenture shall
cease to be of further effect with respect to the Notes except as to (i) rights
of registration of transfer and exchange, (ii) substitution of mutilated,
destroyed, lost or stolen Notes, (iii) rights of Noteholders to receive payments
of principal thereof and interest thereon, (iv) Sections 3.03, 3.04, 3.06, 3.09,
3.16, 3.18 and 3.19, (v) the rights, obligations and immunities of the Indenture
Trustee hereunder (including the rights of the Indenture Trustee under Section
6.07 and the obligations of the Indenture Trustee under Section 4.11) and (vi)
the rights of Noteholders as beneficiaries hereof with respect to the property
so deposited with the Indenture Trustee payable to all or any of them, and the
Indenture Trustee, on demand of and at the expense of the Issuer, shall execute
proper instruments acknowledging satisfaction and discharge of this Indenture
with respect to the Notes, when

          (A)  either

               (1)  all Notes theretofore authenticated and delivered (other
               than (i) Notes that have been destroyed, lost or stolen and that
               have been replaced or paid as provided in Section 4.03 and (ii)
               Notes for whose payment money has theretofore been deposited in
               trust or segregated and held in trust by the Issuer and
               thereafter repaid to the Issuer or discharged from such trust,
               as


                                       22

<PAGE>



               provided in Section 3.03) have been delivered to the Indenture
               Trustee for cancellation; or

               (2)  all Notes not theretofore delivered to the Indenture Trustee
               for cancellation

                    a.  have become due and payable,

                    b.  will become due and payable at the Final Scheduled
                    Payment Date within one year, or

                    c.  have been called for early redemption pursuant to
                    Section 5.02.

and the Issuer, in the case of a. or b. above, has irrevocably deposited or
caused to be irrevocably deposited with the Indenture Trustee cash or direct
obligations of or obligations guaranteed by the United States of America (which
will mature prior to the date such amounts are payable), in trust for such
purpose, in an amount sufficient to pay and discharge the entire indebtedness on
such Notes and Certificates then outstanding not theretofore delivered to the
Indenture Trustee for cancellation when due on the Final Scheduled Payment Date;

          (B)  the Issuer has paid or caused to be paid all other sums payable
          hereunder and under the Insurance Agreement by the Issuer; and

          (C)  the Issuer has delivered to the Indenture Trustee and the Credit
          Enhancer an Officer's Certificate, an Opinion of Counsel and each
          meeting the applicable requirements of Section 10.01 each stating that
          all conditions precedent herein provided for relating to the
          satisfaction and discharge of this Indenture have been complied with
          and, if the Opinion of Counsel relates to a deposit made in connection
          with Section 4.10(A)(2)b. above, such opinion shall further be to the
          effect that such deposit will not have any material adverse tax
          consequences to the Issuer, any Noteholders or any Certificateholders.

     Section 4.11 APPLICATION OF TRUST MONEY. All monies deposited with the
Indenture Trustee pursuant to Section 4.10 hereof shall be held in trust and
applied by it, in accordance with the provisions of the Notes and this
Indenture, to the payment, either directly or through any Paying Agent or
Certificate Paying Agent, as the Indenture Trustee may determine, to the Holders
of Securities, of all sums due and to become due thereon for principal and
interest; but such monies need not be segregated from other funds except to the
extent required herein or required by law.



                                       23

<PAGE>



     Section 4.12 SUBROGATION AND COOPERATION. (a) The Issuer and the Indenture
Trustee acknowledge that (i) to the extent the Credit Enhancer makes payments
under the Credit Enhancement Instrument on account of principal of or interest
on the Notes, the Credit Enhancer will be fully subrogated to the rights of such
Holders to receive such principal and interest from the Issuer, and (ii) the
Credit Enhancer shall be paid such principal and interest but only from the
sources and in the manner provided herein and in the Insurance Agreement for the
payment of such principal and interest.

     The Indenture Trustee shall cooperate in all respects with any reasonable
request by the Credit Enhancer for action to preserve or enforce the Credit
Enhancer's rights or interest under this Indenture or the Insurance Agreement
without limiting the rights of the Noteholders as otherwise set forth in the
Indenture, including, without limitation, upon the occurrence and continuance of
a default under the Insurance Agreement, a request to take any one or more of
the following actions:

          (i) institute Proceedings for the collection of all amounts then
     payable on the Notes, or under this Indenture in respect to the Notes and
     all amounts payable under the Insurance Agreement enforce any judgment
     obtained and collect from the Issuer monies adjudged due;

          (ii) sell the Trust Estate or any portion thereof or rights or
     interest therein, at one or more public or private Sales called and
     conducted in any manner permitted by law;

          (iii) file or record all Assignments that have not previously been
     recorded;

          (iv) institute Proceedings from time to time for the complete or
     partial foreclosure of this Indenture; and

          (v) exercise any remedies of a secured party under the Uniform
     Commercial Code and take any other appropriate action to protect and
     enforce the rights and remedies of the Credit Enhancer hereunder.

     Section 4.13 REPAYMENT OF MONIES HELD BY PAYING AGENT. In connection with
the satisfaction and discharge of this Indenture with respect to the Notes, all
monies then held by any Administrator other than the Indenture Trustee under the
provisions of this Indenture with respect to such Notes shall, upon demand of
the Issuer, be paid to the Indenture Trustee to be held and applied according to
Section 3.05 and thereupon such Paying Agent shall be released from all further
liability with respect to such monies.



                                       24

<PAGE>



     Section 4.14 TEMPORARY NOTES. Pending the preparation of any Definitive
Notes, the Issuer may execute and upon its written direction, the Indenture
Trustee may authenticate and make available for delivery, temporary Notes that
are printed, lithographed, typewritten, photocopied or otherwise produced, in
any denomination, substantially of the tenor of the Definitive Notes in lieu of
which they are issued and with such appropriate insertions, omissions,
substitutions and other variations as the officers executing such Notes may
determine, as evidenced by their execution of such Notes.

     If temporary Notes are issued, the Issuer will cause Definitive Notes to be
prepared without unreasonable delay. After the preparation of the Definitive
Notes, the temporary Notes shall be exchangeable for Definitive Notes upon
surrender of the temporary Notes at the office or agency of the Indenture
Trustee, without charge to the Holder. Upon surrender for cancellation of any
one or more temporary Notes, the Issuer shall execute and the Indenture Trustee
shall authenticate and make available for delivery, in exchange therefor,
Definitive Notes of authorized denominations and of like tenor and aggregate
principal amount. Until so exchanged, such temporary Notes shall in all respects
be entitled to the same benefits under this Indenture as Definitive Notes.




                                       25

<PAGE>



                                    ARTICLE V

                              Default and Remedies

     Section 5.01 EVENTS OF DEFAULT. "Event of Default," wherever used herein,
shall have the meaning provided in Article I; provided, however, that no Event
of Default will occur under clause (i) or clause (ii) of the definition of
"Event of Default" if the Issuer fails to make payments of principal of and
interest on the Notes so long as the Credit Enhancer makes payments sufficient
therefore under the Credit Enhancement Instrument.

     The Issuer shall deliver to the Indenture Trustee and the Credit Enhancer,
within five days after learning of the occurrence of an Event of Default,
written notice in the form of an Officer's Certificate of any event which with
the giving of notice and the lapse of time would become an Event of Default
under clause (iii) of the definition of "Event of Default", its status and what
action the Issuer is taking or proposes to take with respect thereto.

     Section 5.02 ACCELERATION OF MATURITY; RESCISSION AND ANNULMENT. If an
Event of Default should occur and be continuing or if the Master Servicer shall
purchase all of the Mortgage Loans pursuant to Section 8.08 of the Servicing
Agreement, then and in every such case the Indenture Trustee or the Holders of
Notes representing not less than a majority of the Security Balances of all
Notes may declare the Notes to be immediately due and payable, by a notice in
writing to the Issuer (and to the Indenture Trustee if given by Noteholders),
and upon any such declaration the unpaid principal amount of such Class of
Notes, together with accrued and unpaid interest thereon through the date of
acceleration, shall become immediately due and payable. Unless the prior written
consent of the Credit Enhancer shall have been obtained by the Indenture
Trustee, the Payment Date upon which such accelerated payment is due and payable
shall not be a Payment Date under the Credit Enhancement Instrument and the
Indenture Trustee shall not be authorized under Section 3.29 to make a draw
therefor.

     At any time after such declaration of acceleration of maturity with respect
to an Event of Default has been made and before a judgment or decree for payment
of the money due has been obtained by the Indenture Trustee as hereinafter in
this Article V provided, the Holders of Notes representing a majority of the
Security Balances of all Notes, by written notice to the Issuer and the
Indenture Trustee, may waive the related Event of Default and rescind and annul
such declaration and its consequences if:

          (i) the Issuer has paid or deposited with the Indenture Trustee a sum
     sufficient to pay:

          (A) all payments of principal of and interest on the Notes and all
          other amounts that would then be due hereunder or upon the Notes if
          the Event of Default giving rise to such acceleration had not
          occurred; and



                                       26

<PAGE>



          (B) all sums paid or advanced by the Indenture Trustee hereunder and
          the reasonable compensation, expenses, disbursements and advances of
          the Indenture Trustee and its agents and counsel; and

          (ii) all Events of Default, other than the nonpayment of the principal
     of the Notes that has become due solely by such acceleration, have been
     cured or waived as provided in Section 5.12.

     No such rescission shall affect any subsequent default or impair any right
consequent thereto.

     Section 5.03 COLLECTION OF INDEBTEDNESS AND SUITS FOR ENFORCEMENT BY
INDENTURE TRUSTEE. (a) The Issuer covenants that if (i) default is made in the
payment of any interest on any Note when the same becomes due and payable, and
such default continues for a period of five days, or (ii) default is made in the
payment of the principal of or any installment of the principal of any Note when
the same becomes due and payable, the Issue shall, upon demand of the Indenture
Trustee, pay to it, for the benefit of the Holders of Notes and of the Credit
Enhancer, the whole amount then due and payable on the Notes for principal and
interest, with interest upon the overdue principal, and in addition thereto such
further amount as shall be sufficient to cover the costs and expenses of
collection, including the reasonable compensation, expenses, disbursements and
advances of the Indenture Trustee and its agents and counsel.

     (b) In case the Issuer shall fail forthwith to pay such amounts upon such
demand, the Indenture Trustee, in its own name and as trustee of an express
trust, subject to the provisions of Section 10.17 hereof may institute a
Proceeding for the collection of the sums so due and unpaid, and may prosecute
such Proceeding to judgment or final decree, and may enforce the same against
the Issuer or other obligor upon the Notes and collect in the manner provided by
law out of the property of the Issuer or other obligor the Notes, wherever
situated, the monies adjudged or decreed to be payable.

     (c) If an Event of Default occurs and is continuing, the Indenture Trustee
subject to the provisions of Section 10.17 hereof may, as more particularly
provided in Section 5.04, in its discretion, proceed to protect and enforce its
rights and the rights of the Noteholders and the Credit Enhancer, by such
appropriate Proceedings as the Indenture Trustee shall deem most effective to
protect and enforce any such rights, whether for the specific enforcement of any
covenant or agreement in this Indenture or in aid of the exercise of any power
granted herein, or to enforce any other proper remedy or legal or equitable
right vested in the Indenture Trustee by this Indenture or by law.

     (d) In case there shall be pending, relative to the Issuer or any other
obligor upon the Notes or any Person having or claiming an ownership interest in
the Trust Estate, Proceedings under Title 11 of the United States Code or any
other applicable federal or state bankruptcy, insolvency or other similar law,
or in case a receiver, assignee or trustee in bankruptcy or reorganization,
liquidator, sequestrator or similar official shall have been appointed for or
taken possession of the


                                       27

<PAGE>



Issuer or its property or such other obligor or Person, or in case of any other
comparable judicial Proceedings relative to the Issuer or other obligor upon the
Notes, or to the creditors or property of the Issuer or such other obligor, the
Indenture Trustee, irrespective of whether the principal of any Notes shall then
be due and payable as therein expressed or by declaration or otherwise and
irrespective of whether the Indenture Trustee shall have made any demand
pursuant to the provisions of this Section, shall be entitled and empowered, by
intervention in such Proceedings or otherwise:

          (i) to file and prove a claim or claims for the whole amount of
     principal and interest owing and unpaid in respect of the Notes and to file
     such other papers or documents as may be necessary or advisable in order to
     have the claims of the Indenture Trustee (including any claim for
     reasonable compensation to the Indenture Trustee and each predecessor
     Indenture Trustee, and their respective agents, attorneys and counsel, and
     for reimbursement of all expenses and liabilities incurred, and all
     advances made, by the Indenture Trustee and each predecessor Indenture
     Trustee, except as a result of negligence or bad faith) and of the
     Noteholders allowed in such Proceedings;

          (ii) unless prohibited by applicable law and regulations, to vote on
     behalf of the Holders of Notes in any election of a trustee, a standby
     trustee or Person performing similar functions in any such Proceedings;

          (iii) to collect and receive any monies or other property payable or
     deliverable on any such claims and to distribute all amounts received with
     respect to the claims of the Noteholders and of the Indenture Trustee on
     their behalf; and

          (iv) to file such proofs of claim and other papers or documents as may
     be necessary or advisable in order to have the claims of the Indenture
     Trustee or the Holders of Notes allowed in any judicial proceedings
     relative to the Issuer, its creditors and its property;

and any trustee, receiver, liquidator, custodian or other similar official in
any such Proceeding is hereby authorized by each of such Noteholders to make
payments to the Indenture Trustee, and, in the event that the Indenture Trustee
shall consent to the making of payments directly to such Noteholders, to pay to
the Indenture Trustee such amounts as shall be sufficient to cover reasonable
compensation to the Indenture Trustee, each predecessor Indenture Trustee and
their respective agents, attorneys and counsel, and all other expenses and
liabilities incurred, and all advances made, by the Indenture Trustee and each
predecessor Indenture Trustee except as a result of negligence or bad faith.

     (e) Nothing herein contained shall be deemed to authorize the Indenture
Trustee to authorize or consent to or vote for or accept or adopt on behalf of
any Noteholder any plan of reorganization, arrangement, adjustment or
composition affecting the Notes or the rights of any Holder thereof or to
authorize the Indenture Trustee to vote in respect of the claim of any Note
holder in any such proceeding except, as aforesaid, to vote for the election of
a trustee in bankruptcy or similar Person.


                                       28

<PAGE>




     (f) All rights of action and of asserting claims under this Indenture, or
under any of the Notes, may be enforced by the Indenture Trustee without the
possession of any of the Notes or the production thereof in any trial or other
Proceedings relative thereto, and any such action or proceedings instituted by
the Indenture Trustee shall be brought in its own name as trustee of an express
trust, and any recovery of judgment, subject to the payment of the expenses,
disbursements and compensation of the Indenture Trustee, each predecessor
Indenture Trustee and their respective agents and attorneys, shall be for the
ratable benefit of the Holders of the Notes.

     (g) In any Proceedings brought by the Indenture Trustee (and also any
Proceedings involving the interpretation of any provision of this Indenture to
which the Indenture Trustee shall be a party), the Indenture Trustee shall be
held to represent all the Holders of the Notes, and it shall not be necessary to
make any Noteholder a party to any such Proceedings.

     Section 5.04 REMEDIES; PRIORITIES. (a) If an Event of Default shall have
occurred and be continuing, the Indenture Trustee subject to the provisions of
Section 10.17 hereof may do one or more of the following (subject to Section
5.05):

          (i) institute Proceedings in its own name and as trustee of an express
     trust for the collection of all amounts then payable on the Notes or under
     this Indenture with respect thereto, whether by declaration or otherwise,
     and all amounts payable under the Insurance Agreement, enforce any judgment
     obtained, and collect from the Issuer and any other obligor upon such Notes
     monies adjudged due;

          (ii) institute Proceedings from time to time for the complete or
     partial foreclosure of this Indenture with respect to the Trust Estate;

          (iii) exercise any remedies of a secured party under the UCC and take
     any other appropriate action to protect and enforce the rights and remedies
     of the Indenture Trustee, the Holders of the Notes and the Credit Enhancer;
     and

          (iv) sell the Trust Estate or any portion thereof or rights or
     interest therein, at one or more public or private sales called and
     conducted in any manner permitted by law;

provided, however, that the Indenture Trustee may not sell or otherwise
liquidate the Trust Estate following an Event of Default, unless (A) the
Indenture Trustee obtains the consent of the Holders of 100% of the aggregate
Principal Balances of the Notes and the Credit Enhancer, which consent will not
be unreasonably withheld, (B) the proceeds of such sale or liquidation
distributable to Holders are sufficient to discharge in full all amounts then
due and unpaid upon the Notes for principal and interest and to reimburse the
Credit Enhancer for any amounts drawn under the Credit Enhancement Instrument
and any other amounts due the Credit Enhancer under the Insurance Agreement or
(C) the Indenture Trustee determines that the Mortgage Loans will not continue
to provide sufficient funds for the payment of principal of and interest on the
Notes as they would have


                                       29

<PAGE>



become due if the Notes had not been declared due and payable, and the Indenture
Trustee obtains the consent of the Credit Enhancer, which consent will not be
unreasonably withheld, and of the Holders of a majority of the aggregate
Principal Balances of the Notes. In determining such sufficiency or
insufficiency with respect to clause (B) and (C), the Indenture Trustee may, but
need not, obtain and rely upon an opinion of an Independent investment banking
or accounting firm of national reputation as to the feasibility of such proposed
action and as to the sufficiency of the Trust Estate for such purpose.
Notwithstanding the fore going, so long as an Event of Servicer Termination has
not occurred, any Sale of the Trust Estate shall be made subject to the
continued Servicing of the Mortgage Loans by the Master Servicer as provided in
the Servicing Agreement.

     (b) If the Indenture Trustee collects any money or property pursuant to
this Article V, it shall pay out the money or property in the following order:

     FIRST: to the Indenture Trustee for amounts due under Section 6.07;

     SECOND: to each Class of Noteholders for amounts due and unpaid on the
related Class Notes for interest and to each Noteholder of such Class in each
case, ratably, without preference or priority of any kind, according to the
amounts due and payable on such Class of Notes for interest from amounts
available in the Trust Estate for such Noteholders;

     THIRD: to Holders of each Class of Notes for amounts due and unpaid on the
related Class of Notes for principal, from amounts available in the Trust Estate
for such Noteholders, and to each Noteholder of such Class in each case ratably,
without preference or priority of any kind, according to the amounts due and
payable on such Class of Notes for principal, until the Security Balances of
each Class of Notes is reduced to zero;

     FOURTH: to the Issuer for amounts required to be distributed to the
Certificateholders in respect of interest and principal pursuant to the Trust
Agreement;

     FIFTH: To the payment of all amounts due and owing to the Credit Enhancer
under the Insurance Agreement;

     SIXTH: to the Issuer for amounts due under Article VIII of the Trust
Agreement; and

     SEVENTH: to the payment of the remainder, if any to the Issuer or any other
person legally entitled thereto. The Indenture Trustee may fix a record date and
payment date for any payment to Noteholders pursuant to this Section 5.04. At
least 15 days before such record date, the Indenture Trustee shall mail to each
Noteholder a notice that states the record date, the payment date and the amount
to be paid.



                                       30

<PAGE>



     Section 5.05 OPTIONAL PRESERVATION OF THE TRUST ESTATE. If the Notes have
been declared to be due and payable under Section 5.02 following an Event of
Default and such declaration and its consequences have not been rescinded and
annulled, the Indenture Trustee may, but need not, elect to take and maintain
possession of the Trust Estate. It is the desire of the parties hereto and the
Noteholders that there be at all times sufficient funds for the payment of
principal of and interest on the Notes and other obligations of the Issuer
including payment to the Credit Enhancer, and the Indenture Trustee shall take
such desire into account when determining whether or not to take and maintain
possession of the Trust Estate. In determining whether to take and maintain
possession of the Trust Estate, the Indenture Trustee may, but need not, obtain
and rely upon an opinion of an Independent investment banking or accounting firm
of national reputation as to the feasibility of such proposed action and as to
the sufficiency of the Trust Estate for such purpose.

     Section 5.06 LIMITATION OF SUITS. No Holder of any Note shall have any
right to institute any Proceeding, judicial or otherwise, with respect to this
Indenture, or for the appointment of a receiver or trustee, or for any other
remedy hereunder, unless and subject to the provisions of Section 10.17 hereof:

          (i) such Holder has previously given written notice to the Indenture
     Trustee of a continuing Event of Default;

          (ii) the Holders of not less than 25% of the Security Balances of the
     Notes have made written request to the Indenture Trustee to institute such
     Proceeding in respect of such Event of Default in its own name as Indenture
     Trustee hereunder;

          (iii) such Holder or Holders have offered to the Indenture Trustee
     reasonable indemnity against the costs, expenses and liabilities to be
     incurred in complying with such request;

          (iv) the Indenture Trustee for 60 days after its receipt of such
     notice, request and offer of indemnity has failed to institute such
     Proceedings; and

          (v) no direction inconsistent with such written request has been given
     to the Indenture Trustee during such 60-day period by the Holders of a
     majority of the Security Balances of the Notes.

     It is understood and intended that no one or more Holders of Notes shall
have any right in any manner whatever by virtue of, or by availing of, any
provision of this Indenture to affect, disturb or prejudice the rights of any
other Holders of Notes or to obtain or to seek to obtain priority or preference
over any other Holders or to enforce any right under this Indenture, except in
the manner herein provided.

     In the event the Indenture Trustee shall receive conflicting or
inconsistent requests and indemnity from two or more groups of Holders of Notes,
each representing less than a majority of


                                       31

<PAGE>



the Security Balances of the Notes, the Indenture Trustee in its sole discretion
may determine what action, if any, shall be taken, notwithstanding any other
provisions of this Indenture.

     Section 5.07 UNCONDITIONAL RIGHTS OF NOTEHOLDERS TO RECEIVE PRINCIPAL AND
INTEREST. Notwithstanding any other provisions in this Indenture, the Holder of
any Note shall have the right, which is absolute and unconditional, to receive
payment of the principal of and interest, if any, on such Note on or after the
respective due dates thereof expressed in such Note or in this Indenture and to
institute suit for the enforcement of any such payment, and such right shall not
be impaired without the consent of such Holder.

     Section 5.08 RESTORATION OF RIGHTS AND REMEDIES. If the Indenture Trustee
or any Noteholder has instituted any Proceeding to enforce any right or remedy
under this Indenture and such Proceeding has been discontinued or abandoned for
any reason or has been determined adversely to the Indenture Trustee or to such
Noteholder, then and in every such case the Issuer, the Indenture Trustee and
the Noteholders shall, subject to any determination in such Proceeding, be
restored severally and respectively to their former positions hereunder, and
thereafter all rights and remedies of the Indenture Trustee and the Noteholders
shall continue as though no such Proceeding had been instituted.

     Section 5.09 RIGHTS AND REMEDIES CUMULATIVE. No right or remedy herein
conferred upon or reserved to the Indenture Trustee or to the Noteholders is
intended to be exclusive of any other right or remedy, and every right and
remedy shall, to the extent permitted by law, be cumulative and in addition to
every other right and remedy given hereunder or now or hereafter existing at law
or in equity or otherwise. The assertion or employment of any right or remedy
hereunder, or otherwise, shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.

     Section 5.10 DELAY OR OMISSION NOT A WAIVER. No delay or omission of the
Indenture Trustee or any Holder of any Note to exercise any right or remedy
accruing upon any Event of Default shall impair any such right or remedy or
constitute a waiver of any such Event of Default or an acquiescence therein.
Every right and remedy given by this Article V or by law to the Indenture
Trustee or to the Noteholders may be exercised from time to time, and as often
as may be deemed expedient, by the Indenture Trustee or by the Noteholders, as
the case may be.

     Section 5.11 CONTROL BY NOTEHOLDERS. The Holders of a majority of the
Security Balances of Notes shall have the right to direct the time, method and
place of conducting any Proceeding for any remedy available to the Indenture
Trustee with respect to the Notes or exercising any trust or power conferred on
the Indenture Trustee; provided that:

          (i) such direction shall not be in conflict with any rule of law or
     with this Indenture;

          (ii) subject to the express terms of Section 5.04, any direction to
     the Indenture Trustee to sell or liquidate the Trust Estate shall be by
     Holders of Notes representing not less


                                       32

<PAGE>



     than 100% of the Security Balances of Notes;

          (iii) if the conditions set forth in Section 5.05 have been satisfied
     and the Indenture Trustee elects to retain the Trust Estate pursuant to
     such Section, then any direction to the Indenture Trustee by Holders of
     Notes representing less than 100% of the Security Balances of Notes to sell
     or liquidate the Trust Estate shall be of no force and effect; and

          (iv) the Indenture Trustee may take any other action deemed proper by
     the Indenture Trustee that is not inconsistent with such direction.

     Notwithstanding the rights of Noteholders set forth in this Section,
subject to Section 6.01, the Indenture Trustee need not take any action that it
determines might involve it in liability or might materially adversely affect
the rights of any Noteholders not consenting to such action.

     Section 5.12 WAIVER OF PAST DEFAULTS. Prior to the declaration of the
acceleration of the maturity of the Notes as provided in Section 5.02, the
Holders of Notes of not less than a majority of the Security Balances of the
Notes may waive any past Event of Default and its consequences except an Event
of Default (a) with respect to payment of principal of or interest on any of the
Notes or (b) in respect of a covenant or provision hereof which cannot be
modified or amended without the consent of the Holder of each Note or (c) the
waiver of which would materially and adversely affect the interests of the
Credit Enhancer or modify its obligation under the Credit Enhancement
Instrument. In the case of any such waiver, the Issuer, the Indenture Trustee
and the Holders of the Notes shall be restored to their former positions and
rights hereunder, respectively; but no such waiver shall extend to any
subsequent or other Event of Default or impair any right consequent thereto.

     Upon any such waiver, any Event of Default arising therefrom shall be
deemed to have been cured and not to have occurred, for every purpose of this
Indenture; but no such waiver shall extend to any subsequent or other Event of
Default or impair any right consequent thereto.

     Section 5.13 UNDERTAKING FOR COSTS. All parties to this Indenture agree,
and each Holder of any Note by such Holder's acceptance thereof shall be deemed
to have agreed, that any court may in its discretion require, in any suit for
the enforcement of any right or remedy under this Indenture, or in any suit
against the Indenture Trustee for any action taken, suffered or omitted by it as
Indenture Trustee, the filing by any party litigant in such suit of an
undertaking to pay the costs of such suit, and that such court may in its
discretion assess reasonable costs, including reasonable attorneys' fees,
against any party litigant in such suit, having due regard to the merits and
good faith of the claims or defenses made by such party litigant; but the
provisions of this Section 5.13 shall not apply to (a) any suit instituted by
the Indenture Trustee, (b) any suit instituted by any Noteholder, or group of
Noteholders, in each case holding in the aggregate more than 10% of the Security
Balances of the Notes or (c) any suit instituted by any Noteholder for the
enforcement of the payment of principal of or interest on any Note on or after
the respective due dates expressed in such Note and in this Indenture.


                                       33

<PAGE>




     Section 5.14 WAIVER OF STAY OR EXTENSION LAWS. The Issuer covenants (to the
extent that it may lawfully do so) that it will not at any time insist upon, or
plead or in any manner whatsoever, claim or take the benefit or advantage of,
any stay or extension law wherever enacted, now or at any time hereafter in
force, that may affect the covenants or the performance of this Indenture; and
the Issuer (to the extent that it may lawfully do so) hereby expressly waives
all benefit or advantage of any such law, and covenants that it shall not
hinder, delay or impede the execution of any power herein granted to the
Indenture Trustee, but will suffer and permit the execution of every such power
as though no such law had been enacted.

     Section 5.15 SALE OF TRUST ESTATE. (a) The power to effect any sale or
other disposition (a "Sale") of any portion of the Trust Estate pursuant to
Section 5.04 is expressly subject to the provisions of Section 5.05 and this
Section 5.15. The power to effect any such Sale shall not be exhausted by any
one or more Sales as to any portion of the Trust Estate remaining unsold, but
shall continue unimpaired until the entire Trust Estate shall have been sold or
all amounts payable on the Notes and under this Indenture and under the
Insurance Agreement shall have been paid. The Indenture Trustee may from time to
time postpone any public Sale by public announcement made at the time and place
of such Sale. The Indenture Trustee hereby expressly waives its right to any
amount fixed by law as compensation for any Sale.

     (b) The Indenture Trustee shall not in any private Sale sell the Trust
Estate, or any portion thereof, unless

               (1)  the Holders of all Notes and the Credit Enhancer consent to
               or direct the Indenture Trustee to make, such Sale, or

               (2)  the proceeds of such Sale would be not less than the entire
               amount which would be payable to the Noteholders under the Notes
               and the Credit Enhancer in respect of amounts drawn under the
               Credit Enhancement Instrument and any other amounts due the
               Credit Enhancer under the Insurance Agreement, in full payment
               thereof in accordance with Section 5.02, on the Payment Date next
               succeeding the date of such Sale, or

               (3)  The Indenture Trustee determines, in its sole discretion,
               that the conditions for retention of the Trust Estate set forth
               in Section 5.05 cannot be satisfied (in making any such
               determination, the Indenture Trustee may rely upon an opinion of
               an Independent investment banking firm obtained and delivered as
               provided in Section 5.05), and the Credit Enhancer consents to
               such Sale, which consent will not be unreasonably withheld and
               the Holders representing at least 66-2/3% of the Security
               Balances of the Notes consent to such Sale.



                                       34

<PAGE>



     The purchase by the Indenture Trustee of all or any portion of the Trust
Estate at a private Sale shall not be deemed a Sale or other disposition thereof
for purposes of this Section 5.15(b).

     (c) Unless the Holders and the Credit Enhancer have otherwise consented or
directed the Indenture Trustee, at any public Sale of all or any portion of the
Trust Estate at which a minimum bid equal to or greater than the amount
described in paragraph (2) of subsection (b) of this Section 5.15 has not been
established by the Indenture Trustee and no Person bids an amount equal to or
greater than such amount, the Indenture Trustee shall bid an amount at least
$1.00 more than the highest other bid.

     (d) In connection with a Sale of all or any portion of the Trust Estate

               (1)  any Holder or Holders of Notes may bid for and with the
               consent of the Credit Enhancer purchase the property offered for
               sale, and upon compliance with the terms of sale may hold, retain
               and possess and dispose of such property, without further
               accountability, and may, in paying the purchase money therefor,
               deliver any Notes or claims for interest thereon in lieu of cash
               up to the amount which shall, upon distribution of the net
               proceeds of such sale, be payable thereon, and such Notes, in
               case the amounts so payable thereon shall be less than the amount
               due thereon, shall be returned to the Holders thereof after being
               appropriately stamped to show such partial payment;

               (2)  the Indenture Trustee may bid for and acquire the property
               offered for Sale in connection with any Sale thereof, and,
               subject to any requirements of, and to the extent permitted by,
               applicable law in connection therewith, may purchase all or any
               portion of the Trust Estate in a private sale, and, in lieu of
               paying cash therefor, may make settlement for the purchase price
               by crediting the gross Sale price against the sum of (A) the
               amount which would be distributable to the Holders of the Notes
               and Holders of Certificates and amounts owing to the Credit
               Enhancer as a result of such Sale in accordance with Section
               5.04(b) on the Payment Date next succeeding the date of such Sale
               and (B) the expenses of the Sale and of any Proceedings in
               connection therewith which are reimbursable to it, without being
               required to produce the Notes in order to complete any such Sale
               or in order for the net Sale price to be credited against such
               Notes, and any property so acquired by the Indenture Trustee
               shall be held and dealt with by it in accordance with the
               provisions of this Indenture;

               (3)  the Indenture Trustee shall execute and deliver an
               appropriate instrument of conveyance transferring its interest in
               any portion of the Trust Estate in connection with a Sale
               thereof;



                                       35

<PAGE>



               (4)  the Indenture Trustee is hereby irrevocably appointed the
               agent and attorney-in-fact of the Issuer to transfer and convey
               its interest in any portion of the Trust Estate in connection
               with a Sale thereof, and to take all action necessary to effect
               such Sale; and

               (5)  no purchaser or transferee at such a Sale shall be bound to
               ascertain the Indenture Trustee's authority, inquire into the
               satisfaction of any conditions precedent or see to the
               application of any monies.

     Section 5.16 ACTION ON NOTES. The Indenture Trustee's right to seek and
recover judgment on the Notes or under this Indenture shall not be affected by
the seeking, obtaining or application of any other relief under or with respect
to this Indenture. Neither the lien of this Indenture nor any rights or remedies
of the Indenture Trustee or the Noteholders shall be impaired by the recovery of
any judgment by the Indenture Trustee against the Issuer or by the levy of any
execution under such judgment upon any portion of the Trust Estate or upon any
of the assets of the Issuer. Any money or property collected by the Indenture
Trustee shall be applied in accordance with Section 5.04(b).

     Section 5.17 PERFORMANCE AND ENFORCEMENT OF CERTAIN OBLIGATIONS. (a)
Promptly following a request from the Indenture Trustee to do so and at the
Administrator's expense, the Issuer in its capacity as holder of the Mortgage
Loans, shall take all such lawful action as the Indenture Trustee may request to
cause the Issuer to compel or secure the performance and observance by the
Seller and the Master Servicer, as applicable, of each of their obligations to
the Issuer under or in connection with the Mortgage Loan Purchase Agreement and
the Servicing Agreement, and to exercise any and all rights, remedies, powers
and privileges lawfully available to the Issuer under or in connection with the
Mortgage Loan Purchase Agreement and the Servicing Agreement to the extent and
in the manner directed by the Indenture Trustee, as pledgee of the Mortgage
Loans, including the transmission of notices of default on the part of the
Seller or the Master Servicer thereunder and the institution of legal or
administrative actions or proceedings to compel or secure performance by the
Seller or the Master Servicer of each of their obligations under the Mortgage
Loan Purchase Agreement and the Servicing Agreement.

     (b) If an Event of Default has occurred and is continuing, the Indenture
Trustee, as pledgee of the Mortgage Loans, subject to the rights of the Credit
Enhancer under the Servicing Agreement may, and at the direction (which
direction shall be in writing or by telephone (confirmed in writing promptly
thereafter)) of the Holders of 66-2/3% of the Security Balances of the Notes
shall, exercise all rights, remedies, powers, privileges and claims of the
Issuer against the Seller or the Master Servicer under or in connection with the
Mortgage Loan Purchase Agreement and the Servicing Agreement, including the
right or power to take any action to compel or secure performance or observance
by the Seller or the Master Servicer, as the case may be, of each of their
obligations to the Issuer thereunder and to give any consent, request, notice,
direction, approval, extension or waiver under the Mortgage Loan Purchase
Agreement and the Servicing Agreement, as the case may be, and any right of the
Issuer to take such action shall not be suspended.



                                       36

<PAGE>



                                   ARTICLE VI

                              The Indenture Trustee

     Section 6.01 DUTIES OF INDENTURE TRUSTEE. (a) If an Event of Default has
occurred and is continuing, the Indenture Trustee shall exercise the rights and
powers vested in it by this Indenture and use the same degree of care and skill
in their exercise as a prudent person would exercise or use under the
circumstances in the conduct of such person's own affairs.

     (b) Except during the continuance of an Event of Default:

          (i) the Indenture Trustee undertakes to perform such duties and only
     such duties as are specifically set forth in this Indenture and no implied
     covenants or obligations shall be read into this Indenture against the
     Indenture Trustee; and

          (ii) in the absence of bad faith on its part, the Indenture Trustee
     may conclusively rely, as to the truth of the statements and the
     correctness of the opinions expressed therein, upon certificates or
     opinions furnished to the Indenture Trustee and conforming to the
     requirements of this Indenture; however, the Indenture Trustee shall
     examine the certificates and opinions to determine whether or not they
     conform to the requirements of this Indenture.

     (c) The Indenture Trustee may not be relieved from liability for its own
negligent action, its own negligent failure to act or its own willful
misconduct, except that:

          (i) this paragraph does not limit the effect of paragraph (b) of this
     Section 6.01;

          (ii) the Indenture Trustee shall not be liable for any error of
     judgment made in good faith by a Responsible Officer unless it is proved
     that the Indenture Trustee was negligent in ascertaining the pertinent
     facts; and

          (iii) the Indenture Trustee shall not be liable with respect to any
     action it takes or omits to take in good faith in accordance with a
     direction received by it (A) pursuant to Section 5.11 or (B) from the
     Credit Enhancer, which it is entitled to give under any of the Basic
     Documents.

     (d) The Indenture Trustee shall not be liable for interest on any money
received by it except as the Indenture Trustee may agree in writing with the
Issuer.

     (e) Money held in trust by the Indenture Trustee need not be segregated
from other funds except to the extent required by law or the terms of this
Indenture or the Trust Agreement.

     (f) No provision of this Indenture shall require the Indenture Trustee to
expend or risk its own funds or otherwise incur financial liability in the
performance of any of its duties hereunder


                                       37

<PAGE>



or in the exercise of any of its rights or powers, if it shall have reasonable
grounds to believe that repayment of such funds or adequate indemnity against
such risk or liability is not reasonably assured to it.

     (g) Every provision of this Indenture relating to the conduct or affecting
the liability of or affording protection to the Indenture Trustee shall be
subject to the provisions of this Section and to the provisions of the TIA.

     Section 6.02 RIGHTS OF INDENTURE TRUSTEE. (a) The Indenture Trustee may
rely on any document believed by it to be genuine and to have been signed or
presented by the proper person. The Indenture Trustee need not investigate any
fact or matter stated in the document.

     (b) Before the Indenture Trustee acts or refrains from acting, it may
require an Officer's Certificate or an Opinion of Counsel. The Indenture Trustee
shall not be liable for any action it takes or omits to take in good faith in
reliance on an Officer's Certificate or Opinion of Counsel.

     (c) The Indenture Trustee may execute any of the trusts or powers hereunder
or perform any duties hereunder either directly or by or through agents or
attorneys or a custodian or nominee, and the Indenture Trustee shall not be
responsible for any misconduct or negligence on the part of, or for the
supervision of, any such agent, attorney, custodian or nominee appointed with
due care by it hereunder.

     (d) The Indenture Trustee shall not be liable for any action it takes or
omits to take in good faith which it believes to be authorized or within its
rights or powers; provided, however, that the Indenture Trustee's conduct does
not constitute willful misconduct, negligence or bad faith.

     (e) The Indenture Trustee may consult with counsel, and the advice or
opinion of counsel with respect to legal matters relating to this Indenture and
the Notes shall be full and complete authorization and protection from liability
in respect to any action taken, omitted or suffered by it hereunder in good
faith and in accordance with the advice or opinion of such counsel.

     Section 6.03 INDIVIDUAL RIGHTS OF INDENTURE TRUSTEE. The Indenture Trustee
in its individual or any other capacity may become the owner or pledgee of Notes
and may otherwise deal with the Issuer or its Affiliates with the same rights it
would have if it were not Indenture Trustee. Any Administrator, Note Registrar,
co-registrar or co-paying agent may do the same with like rights. However, the
Indenture Trustee must comply with Sections 6.11 and 6.12.

     Section 6.04 INDENTURE TRUSTEE'S DISCLAIMER. The Indenture Trustee shall
not be responsible for and makes no representation as to the validity or
adequacy of this Indenture or the Notes, it shall not be accountable for the
Issuer's use of the proceeds from the Notes, and it shall not be responsible for
any statement of the Issuer in the Indenture or in any document issued in
connection with the sale of the Notes or in the Notes other than the Indenture
Trustee's certificate of authentication.



                                       38

<PAGE>



     Section 6.05 NOTICE OF EVENT OF DEFAULT. If an Event of Default occurs and
is continuing and if it is known to a Responsible Officer of the Indenture
Trustee, the Indenture Trustee shall give notice thereof to the Credit Enhancer.
The Trustee shall mail to each Noteholder notice of the Event of Default within
90 days after it occurs. Except in the case of an Event of Default in payment of
principal of or interest on any Note, the Indenture Trustee may withhold the
notice if and so long as a committee of its Responsible Officers in good faith
determines that withholding the notice is in the interests of Noteholders.

     Section 6.06 REPORTS BY INDENTURE TRUSTEE TO HOLDERS. The Indenture Trustee
shall deliver to each Noteholder such information as may be required to enable
such holder to prepare its federal and state income tax returns. In addition,
upon the Issuer's written request, the Indenture Trustee shall promptly furnish
information reasonably requested by the Issuer that is reasonably available to
the Indenture Trustee to enable the Issuer to perform its federal and state
income tax reporting obligations.

     Section 6.07 COMPENSATION AND INDEMNITY. The Issuer shall or shall cause
the Administrator to pay to the Indenture Trustee on each Payment Date
reasonable compensation for its services. The Indenture Trustee's compensation
shall not be limited by any law on compensation of a trustee of an express
trust. The Issuer shall or shall cause the Administrator to reimburse the
Indenture Trustee for all reasonable out-of-pocket expenses incurred or made by
it, including costs of collection, in addition to the compensation for its
services. Such expenses shall include the reasonable compensation and expenses,
disbursements and advances of the Indenture Trustee's agents, counsel,
accountants and experts. The Issuer shall or shall cause the Administrator to
indemnify the Indenture Trustee against any and all loss, liability or expense
(including attorneys' fees) incurred by it in connection with the administration
of this trust and the performance of its duties hereunder. The Indenture Trustee
shall notify the Issuer and the Administrator promptly of any claim for which it
may seek indemnity. Failure by the Indenture Trustee to so notify the Issuer and
the Administrator shall not relieve the Issuer or the Administrator of its
obligations hereunder. The Issuer shall or shall cause the Administrator to
defend any such claim, and the Indenture Trustee may have separate counsel and
the Issuer shall or shall cause the Administrator to pay the fees and expenses
of such counsel. Neither the Issuer nor the Administrator need reimburse any
expense or indemnify against any loss, liability or expense incurred by the
Indenture Trustee through the Indenture Trustee's own willful misconduct,
negligence or bad faith.

     The Issuer's payment obligations to the Indenture Trustee pursuant to this
Section 6.07 shall survive the discharge of this Indenture. When the Indenture
Trustee incurs expenses after the occurrence of an Event of Default specified in
Section 5.01(iv) or (v) with respect to the Issuer, the expenses are intended to
constitute expenses of administration under Title 11 of the United States Code
or any other applicable federal or state bankruptcy, insolvency or similar law.



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<PAGE>



     Section 6.08 REPLACEMENT OF INDENTURE TRUSTEE. No resignation or removal of
the Indenture Trustee and no appointment of a successor Indenture Trustee shall
become effective until the acceptance of appointment by the successor Indenture
Trustee pursuant to this Section 6.08. The Indenture Trustee may resign at any
time by so notifying the Issuer and the Credit Enhancer. The Holders of a
majority of Security Balances of the Notes may remove the Indenture Trustee by
so notifying the Indenture Trustee and the Credit Enhancer and may appoint a
successor Indenture Trustee. The Issuer shall remove the Indenture Trustee if:

          (i) the Indenture Trustee fails to comply with Section 6.11;

          (ii) the Indenture Trustee is adjudged a bankrupt or insolvent;

          (iii) a receiver or other public officer takes charge of the Indenture
     Trustee or its property; or

          (iv) the Indenture Trustee otherwise becomes incapable of acting.

     If the Indenture Trustee resigns or is removed or if a vacancy exists in
the office of Indenture Trustee for any reason (the Indenture Trustee in such
event being referred to herein as the retiring Indenture Trustee), the Issuer
shall promptly appoint a successor Indenture Trustee.

     A successor Indenture Trustee shall deliver a written acceptance of its
appointment to the retiring Indenture Trustee and to the Issuer. Thereupon, the
resignation or removal of the retiring Indenture Trustee shall become effective,
and the successor Indenture Trustee shall have all the rights, powers and duties
of the Indenture Trustee under this Indenture. The successor Indenture Trustee
shall mail a notice of its succession to Noteholders. The retiring Indenture
Trustee shall promptly transfer all property held by it as Indenture Trustee to
the successor Indenture Trustee.

     If a successor Indenture Trustee does not take office within 60 days after
the retiring Indenture Trustee resigns or is removed, the retiring Indenture
Trustee, the Issuer or the Holders of a majority of Security Balances of the
Notes may petition any court of competent jurisdiction for the appointment of a
successor Indenture Trustee.

     If the Indenture Trustee fails to comply with Section 6.11, any Noteholder
may petition any court of competent jurisdiction for the removal of the
Indenture Trustee and the appointment of a successor Indenture Trustee.

     Notwithstanding the replacement of the Indenture Trustee pursuant to this
Section, the Issuer's and the Administrator's obligations under Section 6.07
shall continue for the benefit of the retiring Indenture Trustee.



                                       40

<PAGE>



     Section 6.09 SUCCESSOR INDENTURE TRUSTEE BY MERGER. If the Indenture
Trustee consolidates with, merges or converts into, or transfers all or
substantially all its corporate trust business or assets to, another corporation
or banking association, the resulting, surviving or transferee corporation
without any further act shall be the successor Indenture Trustee; provided, that
such corporation or banking association shall be otherwise qualified and
eligible under Section 6.11. The Indenture Trustee shall provide the Rating
Agencies prior written notice of any such transaction.

     In case at the time such successor or successors by merger, conversion or
consolidation to the Indenture Trustee shall succeed to the trusts created by
this Indenture any of the Notes shall have been authenticated but not delivered,
any such successor to the Indenture Trustee may adopt the certificate of
authentication of any predecessor trustee, and deliver such Notes so
authenticated; and in case at that time any of the Notes shall not have been
authenticated, any successor to the Indenture Trustee may authenticate such
Notes either in the name of any predecessor hereunder or in the name of the
successor to the Indenture Trustee; and in all such cases such certificates
shall have the full force which it is anywhere in the Notes or in this Indenture
provided that the certificate of the Indenture Trustee shall have.

     Section 6.10 APPOINTMENT OF CO-INDENTURE TRUSTEE OR SEPARATE INDENTURE
TRUSTEE. (a) Notwithstanding any other provisions of this Indenture, at any
time, for the purpose of meeting any legal requirement of any jurisdiction in
which any part of the Trust Estate may at the time be located, the Indenture
Trustee shall have the power and may execute and deliver all instruments to
appoint one or more Persons to act as a co-trustee or co-trustees, or separate
trustee or separate trustees, of all or any part of the Trust, and to vest in
such Person or Persons, in such capacity and for the benefit of the Noteholders,
such title to the Trust Estate, or any part hereof, and, subject to the other
provisions of this Section, such powers, duties, obligations, rights and trusts
as the Indenture Trustee may consider necessary or desirable. No co-trustee or
separate trustee here under shall be required to meet the terms of eligibility
as a successor trustee under Section 6.11 and no notice to Noteholders of the
appointment of any co-trustee or separate trustee shall be required under
Section 6.08 hereof.

     (b) Every separate trustee and co-trustee shall, to the extent permitted by
law, be appointed and act subject to the following provisions and conditions:

          (i) all rights, powers, duties and obligations conferred or imposed
     upon the Indenture Trustee shall be conferred or imposed upon and exercised
     or performed by the Indenture Trustee and such separate trustee or
     co-trustee jointly (it being understood that such separate trustee or
     co-trustee is not authorized to act separately without the Indenture
     Trustee joining in such act), except to the extent that under any law of
     any jurisdiction in which any particular act or acts are to be performed
     the Indenture Trustee shall be incompetent or unqualified to perform such
     act or acts, in which event such rights, powers, duties and obligations
     (including the holding of title to the Trust Estate or any portion thereof
     in any such jurisdiction) shall be exercised and performed singly by such
     separate trustee or co-trustee, but solely at the direction of the
     Indenture Trustee;



                                       41

<PAGE>



          (ii) no trustee hereunder shall be personally liable by reason of any
     act or omission of any other trustee hereunder; and

          (iii) the Indenture Trustee may at any time accept the resignation of
     or remove any separate trustee or co-trustee.

     (c) Any notice, request or other writing given to the Indenture Trustee
shall be deemed to have been given to each of the then separate trustees and
co-trustees, as effectively as if given to each of them. Every instrument
appointing any separate trustee or co-trustee shall refer to this Agreement and
the conditions of this Article VI. Each separate trustee and co-trustee, upon
its acceptance of the trusts conferred, shall be vested with the estates or
property specified in its instrument of appointment, either jointly with the
Indenture Trustee or separately, as may be provided therein, subject to all the
provisions of this Indenture, specifically including every provision of this
Indenture relating to the conduct of, affecting the liability of, or affording
protection to, the Indenture Trustee. Every such instrument shall be filed with
the Indenture Trustee.

     (d) Any separate trustee or co-trustee may at any time constitute the
Indenture Trustee, its agent or attorney-in-fact with full power and authority,
to the extent not prohibited by law, to do any lawful act under or in respect of
this Agreement on its behalf and in its name. If any separate trustee or
co-trustee shall die, become incapable of acting, resign or be removed, all of
its estates, properties, rights, remedies and trusts shall vest in and be
exercised by the Indenture Trustee, to the extent permitted by law, without the
appointment of a new or successor trustee.

     Section 6.11 ELIGIBILITY; DISQUALIFICATION. The Indenture Trustee shall at
all times satisfy the requirements of TIA Section 310(a). The Indenture Trustee
shall have a combined capital and surplus of at least [$50,000,000] as set forth
in its most recent published annual report of condition and it or its parent
shall have a long-term debt rating of [Baa3] or better by [Moody's]. The
Indenture Trustee shall comply with TIA Section 310(b), including the optional
provision permitted by the second sentence of TIA Section 310(b)(9); provided,
however, that there shall be excluded from the operation of TIA Section
310(b)(1) any indenture or indentures under which other securities of the Issuer
are outstanding if the requirements for such exclusion set forth in TIA Section
310(b)(1) are met.

     Section 6.12 PREFERENTIAL COLLECTION OF CLAIMS AGAINST ISSUER. The
Indenture Trustee shall comply with TIA Section 311(a), excluding any creditor
relationship listed in TIA Section 311(b). An Indenture Trustee who has resigned
or been removed shall be subject to TIA Section 311(a) to the extent indicated.

     Section 6.13 REPRESENTATION AND WARRANTY. The Indenture Trustee hereby
represents that:

          (i) The Indenture Trustee is duly organized and validly existing as a
     corporation in good standing under the laws of the State of ___________,
     with power and authority to own its properties and to conduct its business
     as such properties are currently owned and such business is presently
     conducted.

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<PAGE>



          (ii) The Indenture Trustee has the power and authority to execute and
     deliver this Indenture and to carry out its terms; and the execution,
     delivery and performance of this Indenture have been duly authorized by the
     Indenture Trustee by all necessary corporate action.

          (iii) The consummation of the transactions contemplated by this
     Indenture and the fulfillment of the terms hereof do not conflict with,
     result in any breach of any of the terms and provisions of, or constitute
     (with or without notice or lapse of time) a default under, the articles of
     incorporation or bylaws of the Indenture Trustee or any agreement or other
     instrument to which the Indenture Trustee is a party or by which it is
     bound.

          (iv) To the Indenture Trustee's best knowledge, there are no
     proceedings or investigations pending or threatened before any court,
     regulatory body, administrative agency or other governmental
     instrumentality having jurisdiction over the Indenture Trustee or its
     properties: (A) asserting the invalidity of this Indenture (B) seeking to
     prevent the consummation of any of the transactions contemplated by this
     Indenture or (C) seeking any determination or ruling that might materially
     and adversely affect the performance by the Indenture Trustee of its
     obligations under, or the validity or enforceability of, this Indenture.

     Section 6.14 DIRECTIONS TO INDENTURE TRUSTEE. The Indenture Trustee is
hereby directed:

     (a) to accept the pledge of the Mortgage Loans and hold the assets of the
Trust in trust for the Noteholders;

     (b) to issue, execute and deliver the Notes substantially in the form
prescribed by Exhibit A in accordance with the terms of this Indenture; and

     (c) to take all other actions as shall be required to be taken by the terms
of this Indenture.

     Section 6.15 [NO CONSENT TO CERTAIN ACTS OF DEPOSITOR. The Indenture
Trustee shall not consent to any action proposed to be taken by the Depositor
pursuant to Article [_________] of the Depositor's Restated Certificate of
Incorporation.]

     Section 6.16 INDENTURE TRUSTEE MAY OWN SECURITIES. The Indenture Trustee,
in its individual or any other capacity may become the owner or pledgee of
Securities with the same rights it would have if it were not Indenture Trustee.




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                                   ARTICLE VII

                         Noteholders' Lists and Reports

     Section 7.01 ISSUER TO FURNISH INDENTURE TRUSTEE NAMES AND ADDRESSES OF
NOTEHOLDERS. The Issuer will furnish or cause to be furnished to the Indenture
Trustee (a) not more than five days after each Record Date, a list, in such form
as the Indenture Trustee may reasonably require, of the names and addresses of
the Holders of Notes as of such Record Date, (b) at such other times as the
Indenture Trustee and the Credit Enhancer may request in writing, within 30 days
after receipt by the Issuer of any such request, a list of similar form and
content as of a date not more than 10 days prior to the time such list is
furnished; provided, however, that so long as the Indenture Trustee is the Note
Registrar, no such list shall be required to be furnished.

     Section 7.02 PRESERVATION OF INFORMATION; COMMUNICATIONS TO NOTEHOLDERS.
(a) The Indenture Trustee shall preserve, in as current a form as is reasonably
practicable, the names and addresses of the Holders of Notes contained in the
most recent list furnished to the Indenture Trustee as provided in Section 7.01
and the names and addresses of Holders of Notes received by the Indenture
Trustee in its capacity as Note Registrar. The Indenture Trustee may destroy any
list furnished to it as provided in such Section 7.01 upon receipt of a new list
so furnished.

     (b) Noteholders may communicate pursuant to TIA Section 312(b) with other
Noteholders with respect to their rights under this Indenture or under the
Notes.

     (c) The Issuer, the Indenture Trustee and the Note Registrar shall have the
protection of TIA Section 312(c).

     Section 7.03 REPORTS BY ISSUER. (a) The Issuer shall:

          (i) file with the Indenture Trustee, within 15 days after the Issuer
     is required to file the same with the Commission, copies of the annual
     reports and of the information, documents and other reports (or copies of
     such portions of any of the foregoing as the Commission may from time to
     time by rules and regulations prescribe) that the Issuer may be required to
     file with the Commission pursuant to Section 13 or 15(d) of the Exchange
     Act;

          (ii) file with the Indenture Trustee, and the Commission in accordance
     with rules and regulations prescribed from time to time by the Commission
     such additional information, documents and reports with respect to
     compliance by the Issuer with the conditions and covenants of this
     Indenture as may be required from time to time by such rules and
     regulations; and

          (iii) supply to the Indenture Trustee (and the Indenture Trustee shall
     transmit by mail to all Noteholders described in TIA Section 313(c)) such
     summaries of any information, documents and reports required to be filed by
     the Issuer pursuant to clauses (i) and (ii) of this


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<PAGE>



     Section 7.03(a) and by rules and regulations prescribed from time to time
     by the Commission.

     (b) Unless the Issuer otherwise determines, the fiscal year of the Issuer
shall end on December 31 of each year.

     Section 7.04 REPORTS BY INDENTURE TRUSTEE. If required by TIA Section
313(a), within 60 days after each January 1 beginning with January 1, 200_, the
Indenture Trustee shall mail to each Noteholder as required by TIA Section
313(c) and to the Credit Enhancer a brief report dated as of such date that
complies with TIA Section 313(a). The Indenture Trustee also shall comply with
TIA Section 313(b).

     A copy of each report at the time of its mailing to Noteholders shall be
filed by the Indenture Trustee with the Commission and each stock exchange, if
any, on which the Notes are listed. The Issuer shall notify the Indenture
Trustee if and when the Notes are listed on any stock exchange.




                                       45

<PAGE>



                                  ARTICLE VIII

                      Accounts, Disbursements and Releases

     Section 8.01 COLLECTION OF MONEY. Except as otherwise expressly provided
herein, the Indenture Trustee may demand payment or delivery of, and shall
receive and collect, directly and without intervention or assistance of any
fiscal agent or other intermediary, all money and other property payable to or
receivable by the Indenture Trustee pursuant to this Indenture. The Indenture
Trustee shall apply all such money received by it as provided in this Indenture.
Except as otherwise expressly provided in this Indenture, if any default occurs
in the making of any payment or performance under any agreement or instrument
that is part of the Trust Estate, the Indenture Trustee may take such action as
may be appropriate to enforce such payment or performance, including the
institution and prosecution of appropriate Proceedings. Any such action shall be
without prejudice to any right to claim a Default or Event of Default under this
Indenture and any right to proceed thereafter as provided in Article V.

     Section 8.02 TRUST ACCOUNTS. (a) On or prior to the Closing Date, the
Issuer shall cause the Indenture Trustee to establish and maintain, in the name
of the Indenture Trustee, for the benefit of the Noteholders and the Certificate
Paying Agent, on behalf of the Certificateholders and the Credit Enhancer, the
Payment Account as provided in Section 3.01 of this Indenture.

     (b) All monies deposited from time to time in the Payment Account pursuant
to the Servicing Agreement and all deposits therein pursuant to this Indenture
are for the benefit of the Noteholders and the Certificate Paying Agent, on
behalf of the Certificateholders and all investments made with such monies
including all income or other gain from such investments are for the benefit of
the Master Servicer as provided by the Servicing Agreement.

     On each Payment Date during the Funding Period the Indenture Trustee shall
withdraw Net Principal Collections from the Payment Account and deposit Net
Principal Collections to the Funding Account.

     On each Payment Date, the Indenture Trustee shall distribute all amounts on
deposit in the Payment Account (after giving effect to the withdrawal referred
to in the preceding paragraph) to Noteholders in respect of the Notes and in its
capacity as Certificate Paying Agent to Certificateholders in the order of
priority set forth in Section 3.05 (except as otherwise provided in Section
5.04(b).

     The Master Servicer may direct the Indenture Trustee to invest any funds in
the Payment Account in Eligible Investments maturing no later than the Business
Day preceding each Payment Date and shall not be sold or disposed of prior to
the maturity. Unless otherwise instructed by the Master Servicer, the Indenture
Trustee shall invest all funds in the Payment Account in Eligible Investments.



                                       46

<PAGE>



     (c) On or before the Closing Date the Issuer shall open, at the Corporate
Trust Office, an account which shall be the "Funding Account". The Master
Servicer may direct the Indenture Trustee to invest any funds in the Funding
Account in Eligible Investments maturing no later than the Business Day
preceding each Payment Date and shall not be sold or disposed of prior to the
maturity. Unless otherwise instructed by the Master Servicer, the Indenture
Trustee shall invest all funds in the Payment Account in its Corporate Trust
Short Term Investment Fund so long as it is an Eligible Investment. During the
Funding Period, any amounts received by the Indenture Trustee in respect of Net
Principal Collections for deposit in the Funding Account, together with any
Eligible Investments in which such monies are or will be invested or reinvested
during the term of the Notes, shall be held by the Indenture Trustee in the
Funding Account as part of the Trust Estate, subject to disbursement and
withdrawal as herein provided: Amounts on deposit in the Funding Account in
respect of Net Principal Collections may be withdrawn on each Deposit Date and
(1) paid to the Issuer in payment for Additional Loans by the deposit of such
amount to the Collection Account and (2) at the end of the Funding Period any
amounts remaining in the Funding Account after the withdrawal called for by
clause (1) shall be deposited in the Payment Account to be included in the
payment of principal on the Payment Date that is the last day of the Funding
Period.

     (d) (i) Any investment in the institution with which the Funding Account is
maintained may mature on such Payment Date and (ii) any other investment may
mature on such Payment Date if the Indenture Trustee shall advance funds on such
Payment Date to the Funding Account in the amount payable on such investment on
such Payment Date, pending receipt thereof to the extent necessary to make
distributions on the Notes and the Certificates) and shall not be sold or
disposed of prior to maturity.

     Section 8.03 OFFICER'S CERTIFICATE. The Indenture Trustee shall receive at
least [seven] days notice when requested by the Issuer to take any action
pursuant to Section 8.05(a), accompanied by copies of any instruments to be
executed, and the Indenture Trustee shall also require, as a condition to such
action, an Officer's Certificate, in form and substance satisfactory to the
Indenture Trustee, stating the legal effect of any such action, outlining the
steps required to complete the same, and concluding that all conditions
precedent to the taking of such action have been complied with.

     Section 8.04 TERMINATION UPON DISTRIBUTION TO NOTEHOLDERS. This Indenture
and the respective obligations and responsibilities of the Issuer and the
Indenture Trustee created hereby shall terminate upon the distribution to
Noteholders, Certificate Paying Agent, on behalf of the Certificateholders and
the Indenture Trustee of all amounts required to be distributed pursuant to
Article III; provided, however, that in no event shall the trust created hereby
continue beyond the expiration of 21 years from the death of the survivor of the
descendants of Joseph P. Kennedy, the late ambassador of the United States to
the Court of St. James, living on the date hereof.



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<PAGE>



     Section 8.05 RELEASE OF TRUST ESTATE. (a) Subject to the payment of its
fees and expenses, the Indenture Trustee may, and when required by the
provisions of this Indenture shall, execute instruments to release property from
the lien of this Indenture, or convey the Indenture Trustee's interest in the
same, in a manner and under circumstances that are not inconsistent with the
provisions of this Indenture. No party relying upon an instrument executed by
the Indenture Trustee as provided in Article VIII hereunder shall be bound to
ascertain the Indenture Trustee's authority, inquire into the satisfaction of
any conditions precedent, or see to the application of any monies.

     (b) The Indenture Trustee shall, at such time as (i) there are no Notes
Outstanding, (ii) all sums due the Indenture Trustee pursuant to this Indenture
have been paid, and (iii) all sums due the Credit Enhancer have been paid,
release any remaining portion of the Trust Estate that secured the Notes from
the lien of this Indenture.

     [(c) The Indenture Trustee shall release property from the lien of this
Indenture pursuant to this Section 8.05 only upon receipt of an request from the
Issuer accompanied by an [Officers' Certificate], [an Opinion of Counsel,] and a
letter from the Credit Enhancer, stating that the Credit Enhancer has no
objection to such request from the Issuer.]

     Section 8.06 SURRENDER OF NOTES UPON FINAL PAYMENT. By acceptance of any
Note, the Holder thereof agrees to surrender such Note to the Indenture Trustee
promptly, prior to such Noteholder's receipt of the final payment thereon.




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                                   ARTICLE IX

                             Supplemental Indentures

     Section 9.01 SUPPLEMENTAL INDENTURES WITHOUT CONSENT OF NOTEHOLDERS. (a)
Without the consent of the Holders of any Notes but with the consent of the
Credit Enhancer and prior notice to the Rating Agencies and the Credit Enhancer,
the Issuer and the Indenture Trustee, when authorized by an Issuer Request, at
any time and from time to time, may enter into one or more indentures
supplemental hereto (which shall conform to the provisions of the Trust
Indenture Act as in force at the date of the execution thereof), in form
satisfactory to the Indenture Trustee, for any of the following purposes:

          (i) to correct or amplify the description of any property at any time
     subject to the lien of this Indenture, or better to assure, convey and
     confirm unto the Indenture Trustee any property subject or required to be
     subjected to the lien of this Indenture, or to subject to the lien of this
     Indenture additional property;

          (ii) to evidence the succession, in compliance with the applicable
     provisions hereof, of another person to the Issuer, and the assumption by
     any such successor of the covenants of the Issuer herein and in the Notes
     contained;

          (iii) to add to the covenants of the Issuer, for the benefit of the
     Holders of the Notes, or to surrender any right or power herein conferred
     upon the Issuer;

          (iv) to convey, transfer, assign, mortgage or pledge any property to
     or with the Indenture Trustee;

          (v) to cure any ambiguity, to correct or supplement any provision
     herein or in any supplemental indenture that may be inconsistent with any
     other provision herein or in any supplemental indenture;

          (vi) to make any other provisions with respect to matters or questions
     arising under this Indenture or in any supplemental indenture; provided,
     that such action shall not materially and adversely affect the interests of
     the Holders of the Notes;

          (vii) to evidence and provide for the acceptance of the appointment
     hereunder by a successor trustee with respect to the Notes and to add to or
     change any of the provisions of this Indenture as shall be necessary to
     facilitate the administration of the trusts hereunder by more than one
     trustee, pursuant to the requirements of Article VI; or

          (viii) to modify, eliminate or add to the provisions of this Indenture
     to such extent as shall be necessary to effect the qualification of this
     Indenture under the TIA or under any similar federal statute hereafter
     enacted and to add to this Indenture such other provisions as


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<PAGE>



     may be expressly required by the TIA;

provided, however, that no such indenture supplements shall be entered into
unless the Indenture Trustee shall have received an Opinion of Counsel that
entering into such indenture supplement will not have any material adverse tax
consequences to the Noteholders.

     The Indenture Trustee is hereby authorized to join in the execution of any
such supplemental indenture and to make any further appropriate agreements and
stipulations that may be therein contained.

     (b) The Issuer and the Indenture Trustee, when authorized by an Issuer
Request, may, also without the consent of any of the Holders of the Notes but
with the consent of the Credit Enhancer and prior notice to the Rating Agencies
and the Credit Enhancer, enter into an indenture or indentures supplemental
hereto for the purpose of adding any provisions to, or changing in any manner or
eliminating any of the provisions of, this Indenture or of modifying in any
manner the rights of the Holders of the Notes under this Indenture; provided,
however, that such action shall not, as evidenced by an Opinion of Counsel, (i)
adversely affect in any material respect the interests of any Noteholder or (ii)
cause the Issuer to be subject to an entity level tax.

     Section 9.02 SUPPLEMENTAL INDENTURES WITH CONSENT OF NOTEHOLDERS. The
Issuer and the Indenture Trustee, when authorized by an Issuer Request, also
may, with prior notice to the Rating Agencies and, with the written consent of
the Credit Enhancer and with the consent of the Holders of not less than a
majority of the Security Balances of each Class of Notes affected thereby, by
Act of such Holders delivered to the Issuer and the Indenture Trustee, enter
into an indenture or indentures supplemental hereto for the purpose of adding
any provisions to, or changing in any manner or eliminating any of the
provisions of, this Indenture or of modifying in any manner the rights of the
Holders of the Notes under this Indenture; provided, however, that no such
supplemental indenture shall, without the consent of the Holder of each Note
affected thereby:

          (i) change the date of payment of any installment of principal of or
     interest on any Note, or reduce the principal amount thereof or the
     interest rate thereon, change the provisions of this Indenture relating to
     the application of collections on, or the proceeds of the sale of, the
     Trust Estate to payment of principal of or interest on the Notes, or change
     any place of payment where, or the coin or currency in which, any Note or
     the interest thereon is payable, or impair the right to institute suit for
     the enforcement of the provisions of this Indenture requiring the
     application of funds available therefor, as provided in Article V, to the
     payment of any such amount due on the Notes on or after the respective due
     dates thereof;

          (ii) reduce the percentage of the Security Balances of the Notes, the
     consent of the Holders of which is required for any such supplemental
     indenture, or the consent of the Holders of which is required for any
     waiver of compliance with certain provisions of this Indenture or certain
     defaults hereunder and their consequences provided for in this Indenture;


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<PAGE>




          (iii) modify or alter the provisions of the proviso to the definition
     of the term "Outstanding" or modify or alter the exception in the
     definition of the term "Holder";

          (iv) reduce the percentage of the Security Balances of the Notes
     required to direct the Indenture Trustee to direct the Issuer to sell or
     liquidate the Trust Estate pursuant to Section 5.04;

          (v) modify any provision of this Section 9.02 except to increase any
     percentage specified herein or to provide that certain additional
     provisions of this Indenture or the Basic Documents cannot be modified or
     waived without the consent of the Holder of each Note affected thereby;

          (vi) modify any of the provisions of this Indenture in such manner as
     to affect the calculation of the amount of any payment of interest or
     principal due on any Note on any Payment Date (including the calculation of
     any of the individual components of such calculation); or

          (vii) permit the creation of any lien ranking prior to or on a parity
     with the lien of this Indenture with respect to any part of the Trust
     Estate or, except as otherwise permitted or contemplated herein, terminate
     the lien of this Indenture on any property at any time subject hereto or
     deprive the Holder of any Note of the security provided by the lien of this
     Indenture; and provided, further, that such action shall not, as evidenced
     by an Opinion of Counsel, cause the Issuer to be subject to an entity level
     tax.

     The Indenture Trustee may in its discretion determine whether or not any
Notes would be affected by any supplemental indenture and any such determination
shall be conclusive upon the Holders of all Notes, whether theretofore or
thereafter authenticated and delivered hereunder. The Indenture Trustee shall
not be liable for any such determination made in good faith.

     It shall not be necessary for any Act of Noteholders under this Section
9.02 to approve the particular form of any proposed supplemental indenture, but
it shall be sufficient if such Act shall approve the substance thereof.

     Promptly after the execution by the Issuer and the Indenture Trustee of any
supplemental indenture pursuant to this Section 9.02, the Indenture Trustee
shall mail to the Holders of the Notes to which such amendment or supplemental
indenture relates a notice setting forth in general terms the substance of such
supplemental indenture. Any failure of the Indenture Trustee to mail such
notice, or any defect therein, shall not, however, in any way impair or affect
the validity of any such supplemental indenture.



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<PAGE>



     Section 9.03 EXECUTION OF SUPPLEMENTAL INDENTURES. In executing, or
permitting the additional trusts created by, any supplemental indenture
permitted by this Article IX or the modification thereby of the trusts created
by this Indenture, the Indenture Trustee shall be entitled to receive, and
subject to Sections 6.01 and 6.02, shall be fully protected in relying upon, an
Opinion of Counsel stating that the execution of such supplemental indenture is
authorized or permitted by this Indenture. The Indenture Trustee may, but shall
not be obligated to, enter into any such supplemental indenture that affects the
Indenture Trustee's own rights, duties, liabilities or immunities under this
Indenture or otherwise.

     Section 9.04 EFFECT OF SUPPLEMENTAL INDENTURE. Upon the execution of any
supplemental indenture pursuant to the provisions hereof, this Indenture shall
be and shall be deemed to be modified and amended in accordance therewith with
respect to the Notes affected thereby, and the respective rights, limitations of
rights, obligations, duties, liabilities and immunities under this Indenture of
the Indenture Trustee, the Issuer and the Holders of the Notes shall thereafter
be determined, exercised and enforced hereunder subject in all respects to such
modifications and amendments, and all the terms and conditions of any such
supplemental indenture shall be and be deemed to be part of the terms and
conditions of this Indenture for any and all purposes.

     Section 9.05 CONFORMITY WITH TRUST INDENTURE ACT. Every amendment of this
Indenture and every supplemental indenture executed pursuant to this Article IX
shall conform to the requirements of the Trust Indenture Act as then in effect
so long as this Indenture shall then be qualified under the Trust Indenture Act.

     Section 9.06 REFERENCE IN NOTES TO SUPPLEMENTAL INDENTURES. Notes
authenticated and delivered after the execution of any supplemental indenture
pursuant to this Article IX may, and if required by the Indenture Trustee shall,
bear a notation in form approved by the Indenture Trustee as to any matter
provided for in such supplemental indenture. If the Issuer or the Indenture
Trustee shall so determine, new Notes so modified as to conform, in the opinion
of the Indenture Trustee and the Issuer, to any such supplemental indenture may
be prepared and executed by the Issuer and authenticated and delivered by the
Indenture Trustee in exchange for Outstanding Notes.




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<PAGE>



                                    ARTICLE X

                                  Miscellaneous

     Section 10.01 COMPLIANCE CERTIFICATES AND OPINIONS, ETC. (a) Upon any
application or request by the Issuer to the Indenture Trustee to take any action
under any provision of this Indenture, the Issuer shall furnish to the Indenture
Trustee and to the Credit Enhancer (i) an Officer's Certificate stating that all
conditions precedent, if any, provided for in this Indenture relating to the
proposed action have been complied with and (ii) an Opinion of Counsel stating
that in the opinion of such counsel all such conditions precedent, if any, have
been complied with, except that, in the case of any such application or request
as to which the furnishing of such documents is specifically required by any
provision of this Indenture, no additional certificate or opinion need be
furnished.

     Every certificate or opinion with respect to compliance with a condition or
covenant provided for in this Indenture shall include:

                    (1) a statement that each signatory of such certificate or
                    opinion has read or has caused to be read such covenant or
                    condition and the definitions herein relating thereto;

                    (2) a brief statement as to the nature and scope of the
                    examination or investigation upon which the statements or
                    opinions contained in such certificate or opinion are based;

                    (3) a statement that, in the opinion of each such signatory,
                    such signatory has made such examination or investigation as
                    is necessary to enable such signatory to express an informed
                    opinion as to whether or not such covenant or condition has
                    been complied with;

(4) a statement as to whether, in the opinion of each such signatory, such
condition or covenant has been complied with; and

(5) if the Signer of such Certificate or Opinion is required to be Independent,
the Statement required by the definition of the term "Independent".

     (b) (i) Prior to the deposit of any Collateral or other property or
securities with the Indenture Trustee that is to be made the basis for the
release of any property or securities subject to the lien of this Indenture, the
Issuer shall, in addition to any obligation imposed in Section 10.01(a) or
elsewhere in this Indenture, furnish to the Indenture Trustee an Officer's
Certificate certifying or stating the opinion of each person signing such
certificate as to the fair value (within 90 days of such deposit) to the Issuer
of the Collateral or other property or securities to be so deposited.



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<PAGE>



          (ii) Whenever the Issuer is required to furnish to the Indenture
     Trustee an Officer's Certificate certifying or stating the opinion of any
     signer thereof as to the matters described in clause (i) above, the Issuer
     shall also deliver to the Indenture Trustee an Independent Certificate as
     to the same matters, if the fair value to the Issuer of the securities to
     be so deposited and of all other such securities made the basis of any such
     withdrawal or release since the commencement of the then-current fiscal
     year of the Issuer, as set forth in the certificates delivered pursuant to
     clause (i) above and this clause (ii), is 10% or more of the Security
     Balances of the Notes, but such a certificate need not be furnished with
     respect to any securities so deposited, if the fair value thereof to the
     Issuer as set forth in the related Officer's Certificate is less than
     $25,000 or less than one percent of the Security Balances of the Notes.

          (iii) Whenever any property or securities are to be released from the
     lien of this Indenture, the Issuer shall also furnish to the Indenture
     Trustee an Officer's Certificate certifying or stating the opinion of each
     person signing such certificate as to the fair value (within 90 days of
     such release) of the property or securities proposed to be released and
     stating that in the opinion of such person the proposed release will not
     impair the security under this Indenture in contravention of the provisions
     hereof.

          (iv) Whenever the Issuer is required to furnish to the Indenture
     Trustee an Officer's Certificate certifying or stating the opinion of any
     signer thereof as to the matters described in clause (iii) above, the
     Issuer shall also furnish to the Indenture Trustee an Independent
     Certificate as to the same matters if the fair value of the property or
     securities and of all other property, other than property as contemplated
     by clause (v) below or securities released from the lien of this Indenture
     since the commencement of the then-current calendar year, as set forth in
     the certificates required by clause (iii) above and this clause (iv),
     equals 10% or more of the Security Balances of the Notes, but such
     certificate need not be furnished in the case of any release of property or
     securities if the fair value thereof as set forth in the related Officer's
     Certificate is less than $25,000 or less than one percent of the then
     Security Balances of the Notes.

          (v) Notwithstanding any provision of this Indenture, the Issuer may,
     without compliance with the requirements of the other provisions of this
     Section 10.01, (A) collect, sell or otherwise dispose of the Mortgage Loans
     as and to the extent permitted or required by the Basic Documents or (B)
     make cash payments out of the Payment Account as and to the extent
     permitted or required by the Basic Documents [, so long as the Issuer shall
     deliver to the Indenture Trustee every six months, commencing
     _____________, an Officer's Certificate of the Issuer stating that all the
     dispositions of Collateral described in clauses (A) or (B) above that
     occurred during the preceding six calendar months were in the ordinary
     course of the Issuer's business and that the proceeds thereof were applied
     in accordance with the Basic Documents].



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<PAGE>



     Section 10.02 FORM OF DOCUMENTS DELIVERED TO INDENTURE TRUSTEE. In any case
where several matters are required to be certified by, or covered by an opinion
of, any specified Person, it is not necessary that all such matters be certified
by, or covered by the opinion of, only one such Person, or that they be so
certified or covered by only one document, but one such Person may certify or
give an opinion with respect to some matters and one or more other such Persons
as to other matters, and any such Person may certify or give an opinion as to
such matters in one or several documents.

     Any certificate or opinion of an Authorized Officer of the Issuer may be
based, insofar as it relates to legal matters, upon a certificate or opinion of,
or representations by, counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to the matters upon which his certificate or opinion is based are
erroneous. Any such certificate of an Authorized Officer or Opinion of Counsel
may be based, insofar as it relates to factual matters, upon a certificate or
opinion of, or representations by, an officer or officers of the Seller, the
Issuer or the Administrator, stating that the information with respect to such
factual matters is in the possession of the Seller, the Issuer or the
Administrator, unless such counsel knows, or in the exercise of reasonable care
should know, that the certificate or opinion or representations with respect to
such matters are erroneous.

     Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

     Whenever in this Indenture, in connection with any application or
certificate or report to the Indenture Trustee, it is provided that the Issuer
shall deliver any document as a condition of the granting of such application,
or as evidence of the Issuer's compliance with any term hereof, it is intended
that the truth and accuracy, at the time of the granting of such application or
at the effective date of such certificate or report (as the case may be), of the
facts and opinions stated in such document shall in such case be conditions
precedent to the right of the Issuer to have such application granted or to the
sufficiency of such certificate or report. The foregoing shall not, however, be
construed to affect the Indenture Trustee's right to rely upon the truth and
accuracy of any statement or opinion contained in any such document as provided
in Article VI.

     Section 10.03 ACTS OF NOTEHOLDERS. (a) Any request, demand, authorization,
direction, notice, consent, waiver or other action provided by this Indenture to
be given or taken by Noteholders may be embodied in and evidenced by one or more
instruments of substantially similar tenor signed by such Noteholders in person
or by agents duly appointed in writing; and except as herein otherwise expressly
provided such action shall become effective when such instrument or instruments
are delivered to the Indenture Trustee, and, where it is hereby expressly
required, to the Issuer. Such instrument or instruments (and the action embodied
therein and evidenced thereby) are herein sometimes referred to as the "Act" of
the Noteholders signing such instrument or instruments. Proof of execution of
any such instrument or of a writing appointing any such agent shall be
sufficient for any purpose of this Indenture and (subject to Section 6.01)
conclusive in favor of the Indenture Trustee and the Issuer, if made in the
manner provided in this Section 10.03.


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<PAGE>




     (b) The fact and date of the execution by any person of any such instrument
or writing may be proved in any manner that the Indenture Trustee deems
sufficient.

     (c) The ownership of Notes shall be proved by the Note Registrar.

     (d) Any request, demand, authorization, direction, notice, consent, waiver
or other action by the Holder of any Notes shall bind the Holder of every Note
issued upon the registration thereof or in exchange therefor or in lieu thereof,
in respect of anything done, omitted or suffered to be done by the Indenture
Trustee or the Issuer in reliance thereon, whether or not notation of such
action is made upon such Note.

     Section 10.04 NOTICES, ETC., TO INDENTURE TRUSTEE, ISSUER, CREDIT ENHANCER
AND RATING AGENCIES. Any request, demand, authorization, direction, notice,
consent, waiver or Act of Note holders or other documents provided or permitted
by this Indenture shall be in writing and if such request, demand,
authorization, direction, notice, consent, waiver or act of Noteholders is to be
made upon, given or furnished to or filed with:

          (i) the Indenture Trustee by any Noteholder or by the Issuer shall be
     sufficient for every purpose hereunder if made, given, furnished or filed
     in writing to or with the Indenture Trustee at the Corporate Trust Office.
     The Indenture Trustee shall promptly transmit any notice received by it
     from the Noteholders to the Issuer, or

          (ii) the Issuer by the Indenture Trustee or by any Noteholder shall be
     sufficient for every purpose hereunder if in writing and mailed
     first-class, postage prepaid to the Issuer addressed to: AB Mortgage
     Securities Corp. MBN Trust Series 200_ - ______, in care of [Name of Owner
     Trustee] _________________, __________, ______________, Attention of
     _________________________________________ with a copy to the Administrator
     at ________________ Attention: __________ __________________________, or at
     any other address previously furnished in writing to the Indenture Trustee
     by the Issuer or the Administrator. The Issuer shall promptly transmit any
     notice received by it from the Noteholders to the Indenture Trustee, or

          (iii) the Credit Enhancer by the Issuer, the Indenture Trustee or by
     any Noteholders shall be sufficient for every purpose hereunder to in
     writing and mailed, first-class postage pre-paid, or personally delivered
     or telecopied to: [Name of Credit Enhancer], ________________, ________,
     _______________, Attention: _________________, ___________________________,
     Telephone ______________. Telecopier ______________. The Credit Enhancer
     shall promptly transmit any notice received by it from the Issuer, the
     Indenture Trustee or the Noteholders to the Issuer or Indenture Trustee, as
     the case may be.

     Notices required to be given to the Rating Agencies by the Issuer, the
Indenture Trustee or


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<PAGE>



the Owner Trustee shall be in writing, personally delivered or mailed by
certified mail, return receipt requested, to (i) in the case of [Moody's], at
the following address: [Moody's Investors Service, Inc., ABS Monitoring
Department, 99 Church Street, New York, New York 10007] and (ii) in the case of
[Standard & Poor's], at the following address: [Standard & Poor's Ratings Group,
26 Broadway (15th Floor), New York, New York 10004, Attention of Asset Backed
Surveillance Department]; or as to each of the foregoing, at such other address
as shall be designated by written notice to the other parties.

     Section 10.05 NOTICES TO NOTEHOLDERS; WAIVER. Where this Indenture provides
for notice to Noteholders of any event, such notice shall be sufficiently given
(unless otherwise herein expressly provided) if in writing and mailed,
first-class, postage prepaid to each Noteholder affected by such event, at such
Person's as it appears on the Note Register, not later than the latest date, and
not earlier than the earliest date, prescribed for the giving of such notice. In
any case where notice to Noteholders is given by mail, neither the failure to
mail such notice nor any defect in any notice so mailed to any particular
Noteholder shall affect the sufficiency of such notice with respect to other
Noteholders, and any notice that is mailed in the manner herein provided shall
conclusively be presumed to have been duly given regardless of whether such
notice is in fact actually received.

     Where this Indenture provides for notice in any manner, such notice may be
waived in writing by any Person entitled to receive such notice, either before
or after the event, and such waiver shall be the equivalent of such notice.
Waivers of notice by Noteholders shall be filed with the Indenture Trustee but
such filing shall not be a condition precedent to the validity of any action
taken in reliance upon such a waiver.

     In case, by reason of the suspension of regular mail service as a result of
a strike, work stoppage or similar activity, it shall be impractical to mail
notice of any event to Noteholders when such notice is required to be given
pursuant to any provision of this Indenture, then any manner of giving such
notice as shall be satisfactory to the Indenture Trustee shall be deemed to be a
sufficient giving of such notice.

     Where this Indenture provides for notice to the Rating Agencies, failure to
give such notice shall not affect any other rights or obligations created
hereunder, and shall not under any circumstance constitute an Event of Default.

     Section 10.06 ALTERNATE PAYMENT AND NOTICE PROVISIONS. Notwithstanding any
provision of this Indenture or any of the Notes to the contrary, the Issuer may
enter into any agreement with any Holder of a Note providing for a method of
payment, or notice by the Indenture Trustee or any Administrator to such Holder,
that is different from the methods provided for in this Indenture for such
payments or notices. The Issuer shall furnish to the Indenture Trustee a copy of
each such agreement and the Indenture Trustee shall cause payments to be made
and notices to be given in accordance with such agreements.



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<PAGE>



     Section 10.07 CONFLICT WITH TRUST INDENTURE ACT. If any provision hereof
limits, qualifies or conflicts with another provision hereof that is required to
be included in this Indenture by any of the provisions of the Trust Indenture
Act, such required provision shall control.

     The provisions of TIA Sections 310 through 317 that impose duties on any
Person (including the provisions automatically deemed included herein unless
expressly excluded by this Indenture) are a part of and govern this Indenture,
whether or not physically contained herein.

     Section 10.08 EFFECT OF HEADINGS. The Article and Section headings herein
are for convenience only and shall not affect the construction hereof.

     Section 10.09 SUCCESSORS AND ASSIGNS. All covenants and agreements in this
Indenture and the Notes by the Issuer shall bind its successors and assigns,
whether so expressed or not. All agreements of the Indenture Trustee in this
Indenture shall bind its successors, co-trustees and agents.

     Section 10.10 SEPARABILITY. In case any provision in this Indenture or in
the Notes shall be invalid, illegal or unenforceable, the validity, legality,
and enforceability of the remaining provisions shall not in any way be affected
or impaired thereby.

     Section 10.11 BENEFITS OF INDENTURE. The Credit Enhancer and its successors
and assigns shall be a third-party beneficiary to the provisions of this
Indenture. Nothing in this Indenture or in the Notes, express or implied, shall
give to any Person, other than the parties hereto and their successors
hereunder, and the Noteholders, and any other party secured hereunder, and any
other Person with an ownership interest in any part of the Trust Estate, any
benefit or any legal or equitable right, remedy or claim under this Indenture.

     Section 10.12 LEGAL HOLIDAYS. In any case where the date on which any
payment is due shall not be a Business Day, then (notwithstanding any other
provision of the Notes or this Indenture) payment need not be made on such date,
but may be made on the next succeeding Business Day with the same force and
effect as if made on the date on which nominally due, and no interest shall
accrue for the period from and after any such nominal date.

     Section 10.13 GOVERNING LAW. THIS INDENTURE SHALL BE CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REFERENCE TO ITS
CONFLICT OF LAW PROVISIONS, AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE
PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.



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<PAGE>



     Section 10.14 COUNTERPARTS. This Indenture may be executed in any number of
counterparts, each of which so executed shall be deemed to be an original, but
all such counterparts shall together constitute but one and the same instrument.

     Section 10.15 RECORDING OF INDENTURE. If this Indenture is subject to
recording in any appropriate public recording offices, such recording is to be
effected by the Issuer and at its expense accompanied by an Opinion of Counsel
(which may be counsel to the Indenture Trustee or any other counsel reasonably
acceptable to the Indenture Trustee) to the effect that such recording is
necessary either for the protection of the Noteholders or any other Person
secured hereunder or for the enforcement of any right or remedy granted to the
Indenture Trustee under this Indenture.

     Section 10.16 ISSUER OBLIGATION. No recourse may be taken, directly or
indirectly, with respect to the obligations of the Issuer, the Owner Trustee or
the Indenture Trustee on the Notes or under this Indenture or any certificate or
other writing delivered in connection herewith or therewith, against (i) the
Indenture Trustee or the Owner Trustee in its individual capacity, (ii) any
owner of a beneficial interest in the Issuer or (iii) any partner, owner,
beneficiary, agent, officer, director, employee or agent of the Indenture
Trustee or the Owner Trustee in its individual capacity, any holder of a
beneficial interest in the Issuer, the Owner Trustee or the Indenture Trustee or
of any successor or assign of the Indenture Trustee or the Owner Trustee in its
individual capacity, except as any such Person may have expressly agreed (it
being understood that the Indenture Trustee and the Owner Trustee have no such
obligations in their individual capacity) and except that any such partner,
owner or beneficiary shall be fully liable, to the extent provided by applicable
law, for any unpaid consideration for stock, unpaid capital contribution or
failure to pay any installment or call owing to such entity. For all purposes of
this Indenture, in the performance of any duties or obligations of the Issuer
hereunder, the Owner Trustee shall be subject to, and entitled to the benefits
of, the terms and provisions of Article VI, VII and VIII of the Trust Agreement.

     Section 10.17 NO PETITION. The Indenture Trustee, by entering into this
Indenture, and each Noteholder, by accepting a Note, hereby covenant and agree
that they will not at any time institute against the Depositor or the Issuer, or
join in any institution against the Depositor or the Issuer of, any bankruptcy,
reorganization, arrangement, insolvency or liquidation proceedings, or other
proceedings under any United States federal or state bankruptcy or similar law
in connection with any obligations relating to the Notes, this Indenture or any
of the Basic Documents.

     Section 10.18 INSPECTION. The Issuer agrees that, on reasonable prior
notice, it shall permit any representative of the Indenture Trustee, during the
Issuer's normal business hours, to examine all the books of account, records,
reports and other papers of the Issuer, to make copies and extracts therefrom,
to cause such books to be audited by Independent certified public accountants,
and to discuss the Issuer's affairs, finances and accounts with the Issuer's
officers, employees, and Independent certified public accountants, all at such
reasonable times and as often as may be reasonably requested. The Indenture
Trustee shall and shall cause its representatives to hold in confidence all such
information except to the extent disclosure may be required by law (and all
reasonable applications for confidential treatment are unavailing) and except to
the extent that the


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<PAGE>



Indenture Trustee may reasonably determine that such disclosure is consistent
with its obligations hereunder.

     Section 10.19 AUTHORITY OF THE ADMINISTRATOR. Each of the parties to this
Indenture acknowledges that the Issuer and the Owner Trustee have each appointed
the Administrator to act as its agent to perform the duties and obligations of
the Issuer hereunder. Unless otherwise instructed by the Issuer or the Owner
Trustee, copies of all notices, requests, demands and other documents to be
delivered to the Issuer or the Owner Trustee pursuant to the terms hereof shall
be delivered to the Administrator. Unless otherwise instructed by the Issuer or
the Owner Trustee, all notices, requests, demands and other documents to be
executed or delivered, and any action to be taken, by the Issuer or the Owner
Trustee pursuant to the terms hereof may be executed, delivered and/or taken by
the Administrator pursuant to the Administration Agreement.




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<PAGE>



     IN WITNESS WHEREOF, the Issuer and the Indenture Trustee have caused their
names to be signed hereto by their respective officers thereunto duly
authorized, all as of the day and year first above written.

                                    AB MORTGAGE SECURITIES CORP. MBN
                                    TRUST SERIES 200_ -  _____,
                                    as Issuer


                                    By:_________________________________________
                                    not in its individual capacity but solely as
                                    Owner Trustee


                                    By:_________________________________________
                                    Name:
                                    Title:


                                    ___________________________________________,
                                    as Indenture Trustee, as Certificate Paying
                                    Agent and as Note Registrar


                                    By:_________________________________________
                                    Name:
                                    Title:


_____________________________
hereby accepts the appointment
as Certificate Paying Agent
pursuant to Section 3.03 hereof
and as Certificate Registrar
pursuant to Section 4.02 hereof.


By:_____________________________
Name:
Title:



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<PAGE>



STATE OF [NEW YORK]   )
                      ) ss.:
COUNTY OF [NEW YORK]  )

     On this ____ day of __________, before me personally appeared
______________, to me known, who being by me duly sworn, did depose and say,
that he resides at _________________, __________________ _____, that he is the
of the Owner Trustee, one of the corporations described in and which executed
the above instrument; that he knows the seal of said corporation; that the seal
affixed to said instrument is such corporate seal; that it was so affixed by
order of the Board of Directors of said corporation; and that he signed his name
thereto by like order.


                                          _____________________________________
                                                    Notary Public


[NOTARIAL SEAL]




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<PAGE>



STATE OF [NEW YORK]       )
                          ) ss.:
COUNTY OF [NEW YORK]      )

     On this ____ day of __________, before me personally appeared , to me
known, who being by me duly sworn, did depose and say, that he resides at
____________________, that he is the ______________ of ________________, as
Indenture Trustee, one of the corporations described in and which executed the
above instrument; that he knows the seal of said corporation; that the seal
affixed to said instrument is such corporate seal; that it was so affixed by
order of the Board of Directors of said corporation; and that he signed his name
thereto by like order.


                                          _____________________________________
                                                    Notary Public



[NOTARIAL SEAL]



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<PAGE>



STATE OF [NEW YORK]      )
                         ) ss.:
COUNTY OF [NEW YORK]     )

     On this ____ day of __________, before me personally appeared , to me
known, who being by me duly sworn, did depose and say, that he resides at
________________________, that he is an ________________ of _______________, as
Indenture Trustee, one of the corporations described in and which executed the
above instrument; that he knows the seal of said corporation; that the seal
affixed to said instrument is such corporate seal; that it was so affixed by
order of the Board of Directors of said corporation; and that he signed his name
thereto by like order.


                                          _____________________________________
                                                    Notary Public



[NOTARIAL SEAL]




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<PAGE>



                                   APPENDIX A

                                   DEFINITIONS


     ADJUSTABLE RATE MORTGAGE LOAN: A Mortgage Loan with a Mortgage Rate that is
subject to periodic adjustment calculated on the basis of the Index, plus an
applicable Gross Margin. Each Adjustable Rate Mortgage Loan is secured by a
first lien on the related Mortgaged Property.

     ADJUSTMENT DATE: As to each Adjustable Rate Mortgage Loan, each date set
forth in the related Mortgage Note on which an adjustment to the interest rate
on such Mortgage Loan becomes effective.

     ADMINISTRATIVE FEE: The amount of the fee payable to the Owner Trustee
together with the amount of the premium payable to the Note Insurer, which will
accrue at ______% per annum based on the Note Principal Balance of the Notes.

     ADVANCE: As to any Mortgage Loan, any advance made by the Master Servicer,
pursuant to Section 4.04 of the Servicing Agreement.

     AFFILIATE: With respect to any Person, any other Person controlling,
controlled by or under common control with such Person. For purposes of this
definition, "control" means the power to direct the management and policies of a
Person, directly or indirectly, whether through ownership of voting securities,
by contract or otherwise and "controlling" and "controlled" shall have meanings
correlative to the foregoing.

     APPRAISED VALUE: The appraised value of a Mortgaged Property based upon the
lesser of (i) the appraisal made at the time of the origination of the related
Mortgage Loan, or (ii) the sales price of such Mortgaged Property at such time
of origination. With respect to a Mortgage Loan the proceeds of which were used
to refinance an existing mortgage loan, the appraised value of the Mortgaged
Property based upon the appraisal (as reviewed and approved by the Seller)
obtained at the time of refinancing.

     ASSIGNMENT OF MORTGAGE: An assignment of Mortgage, notice of transfer or
equivalent instrument, in recordable form, which is sufficient under the laws of
the jurisdiction wherein the related Mortgaged Property is located to reflect of
record the sale of the Mortgage, which assignment, notice of transfer or
equivalent instrument may be in the form of one or more blanket assignments
covering Mortgages secured by Mortgaged Properties located in the same county,
if permitted by law.

     AUTHORIZED NEWSPAPER: A newspaper of general circulation in the Borough of
Manhattan, The City of New York, printed in the English language and customarily
published on each Business Day, whether or not published on Saturdays, Sundays
or holidays.


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<PAGE>



     AUTHORIZED OFFICER: With respect to the Issuer, any officer of the Owner
Trustee who is authorized to act for the Owner Trustee in matters relating to
the Issuer and who is identified on the list of Authorized Officers delivered by
the Owner Trustee to the Indenture Trustee on the Closing Date (as such list may
be modified or supplemented from time to time thereafter).

     AVAILABLE FUNDS: As to any Payment Date, an amount equal to the amount on
deposit in the Payment Account on such Payment Date and available for
distribution to the Noteholders (minus, if the Notes have been declared due and
payable following an Event of Default on such Payment Date, any amounts owed to
the Indenture Trustee by the Issuer pursuant to Section 6.07 of the Indenture).

     AVAILABLE FUNDS CAP CARRY-FORWARD AMOUNT: With respect to the Notes and any
Payment Date, an amount equal to the sum of (x) the amount, if any, by which (a)
the lesser of (1) the amount payable if clause (i) of the definition of Note
Interest Rate is used to calculate interest and (2) the amount payable if the
Maximum Note Interest Rate is used to calculate interest exceeds (b) the amount
payable if clause (ii) of the definition of Note Interest Rate is used to
calculate interest and (y) the interest accrued during the prior Interest Period
on the amount of any Available Funds Cap Carry-Forward Amount immediately prior
to such Payment Date, calculated on the basis of a 360-day year and the actual
number of days elapsed and using the Note Interest Rate applicable to such
Payment Date minus (z) the aggregate of all amounts distributed to the
Noteholders on all prior Payment Dates pursuant to Section 3.05(v) of the
Indenture.

     AVAILABLE FUNDS INTEREST RATE: As to any Payment Date, a per annum rate
equal to the lesser of (x) the fraction, expressed as a percentage, the
numerator of which is (i) an amount equal to (A) 1/12 of the aggregate Principal
Balance of the then outstanding Mortgage Loans times the weighted average of the
Expense Adjusted Mortgage Rates on the then outstanding Mortgage Loans minus (B)
the Administrative Fee for such Payment Date, and the denominator of which is
(ii) an amount equal to (A) the then outstanding aggregate Note Principal
Balance of the Notes multiplied by (B) the actual number of days elapsed in the
related Interest Period divided by 360 and (y) the Maximum Note Interest Rate.

     BANKRUPTCY CODE: The Bankruptcy Code of 1978, as amended.

     BASIC DOCUMENTS: The Trust Agreement, the Certificate of Trust, the
Indenture, the Mortgage Loan Purchase Agreement, the Insurance Agreement, the
Servicing Agreement, and the other documents and certificates delivered in
connection with any of the above.

     BENEFICIAL OWNER: With respect to any Note, the Person who is the
beneficial owner of such Note as reflected on the books of the Depository or on
the books of a Person maintaining an account with such Depository (directly as a
Depository Participant or indirectly through a Depository Participant, in
accordance with the rules of such Depository).



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<PAGE>



     BOOK-ENTRY NOTES: Beneficial interests in the Notes, ownership and
transfers of which shall be made through book entries by the Depository as
described in Section 4.06 of the Indenture.

     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, Delaware or California or
in the city in which the corporate trust offices of the Indenture Trustee or the
Note Insurer are located, are required or authorized by law to be closed.

     BUSINESS TRUST STATUTE: Chapter 38 of Title 12 of the Delaware Code, 12
DEL. Code Sections 3801 ET SEQ., as the same may be amended from time to time.

     CASH LIQUIDATION: As to any defaulted Mortgage Loan other than a Mortgage
Loan as to which an REO Acquisition occurred, a determination by the Master
Servicer that it has received all Insurance Proceeds, Liquidation Proceeds and
other payments or cash recoveries which the Master Servicer reasonably and in
good faith expects to be finally recoverable with respect to such Mortgage Loan.

     CERTIFICATE DISTRIBUTION ACCOUNT: The account or accounts created and
maintained pursuant to Section 3.10(d) of the Trust Agreement. The Certificate
Distribution Account shall be an Eligible Account.

     CERTIFICATE PAYING AGENT: The meaning specified in Section 3.10 of the
Trust Agreement.

     CERTIFICATE PERCENTAGE INTEREST: With respect to each Certificate, the
Certificate Percentage Interest on the face thereof.

     CERTIFICATE REGISTER: The register maintained by the Certificate Registrar
in which the Certificate Registrar shall provide for the registration of
Certificates and of transfers and exchanges of Certificates.

     CERTIFICATE REGISTRAR: Initially, the Indenture Trustee, in its capacity as
Certificate Registrar, or any successor to the Indenture Trustee in such
capacity.

     CERTIFICATE OF TRUST: The Certificate of Trust filed for the Trust pursuant
to Section 3810(a) of the Business Trust Statute.

     CERTIFICATES: The AB Mortgage Securities Corp., Mortgage-Backed
Certificates, Series 200_-_, evidencing the beneficial ownership interest in the
Issuer and executed by the Owner Trustee in substantially the form set forth in
Exhibit A to the Trust Agreement.

     CERTIFICATEHOLDER: The Person in whose name a Certificate is registered in
the Certificate Register. Owners of Certificates that have been pledged in good
faith may be regarded as Holders if the pledgee establishes to the satisfaction
of the Indenture Trustee or the Owner Trustee, as the


                                       67

<PAGE>



case may be, the pledgee's right so to act with respect to such Certificates and
that the pledgee is not the Issuer, any other obligor upon the Certificates or
any Affiliate of any of the foregoing Persons.

     CLOSING DATE: ______ __, 200_.

     CODE: The Internal Revenue Code of 1986, as amended, and the rules and
regulations promulgated thereunder.

     COLLATERAL: The meaning specified in the Granting Clause of the Indenture.

     COLLECTION ACCOUNT: The account or accounts created and maintained pursuant
to Section 3.06(d) of the Servicing Agreement. The Collection Account shall be
an Eligible Account.

     COMBINED LOAN-TO-VALUE RATIO: With respect to any Mortgage Loan and any
date, the percentage equivalent of a fraction, the numerator of which is the
Cut-Off Date Principal Balance of such Mortgage Loan and the denominator of
which is the outstanding principal balance as of the date of the origination of
such Mortgage Loan of any mortgage loan or mortgage loans that are secured by
liens on the Mortgaged Property that are senior or subordinate to the Mortgage
and the denominator of which is the Appraised Value of the related Mortgaged
Property.

     COMPENSATING INTEREST: With respect to any Determination Date, an amount
equal to the lesser of (i) the aggregate amount of Prepayment Interest Shortfall
for the related Prepayment Period and (ii) the Servicing Fee for such
Determination Date.

     CONVERTED MORTGAGE LOAN: Any Convertible Mortgage Loan with respect to
which the interest rate borne by such Mortgage Loan has been converted from an
adjustable interest rate to a fixed interest rate.

     CONVERTIBLE MORTGAGE LOAN: Any Adjustable Rate Mortgage Loan which by its
terms grants to the related Mortgagor the option to convert the interest rate
borne by such Mortgage Loan from an adjustable interest rate to a fixed interest
rate.

     CONVERTING MORTGAGE LOAN: Any Convertible Mortgage Loan with respect to
which the related Mortgagor has given notice of his intent to convert from an
adjustable interest rate to a fixed interest rate and prior to the conversion of
such Mortgage Loan.

     CORPORATE TRUST OFFICE: With respect to the Indenture Trustee, Certificate
Registrar, Certificate Paying Agent and Paying Agent, the principal corporate
trust office of the Indenture Trustee and Note Registrar at which at any
particular time its corporate trust business shall be administered, which office
at the date of the execution of this instrument is located at ____________,
__________, ______, __________ _____, Attention: ________ ___ ______, except
that for purposes of Section 4.02 of the Indenture and Section 3.09 of the Trust
Agreement, such term shall include the Indenture Trustee's office or agency at
_______________, ________,


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<PAGE>



________ _____, Attention: ___________ _________. With respect to the Owner
Trustee, the principal corporate trust office of the Owner Trustee at which at
any particular time its corporate trust business shall be administered, which
office at the date of the execution of this Trust Agreement is located at
________________________, ______ ____________, ________________________,
__________, ________ _____, Attention: ______________________.

     CUT-OFF DATE: With respect to the Mortgage Loans, ______ 1, 200_.

     CUT-OFF DATE PRINCIPAL BALANCE: With respect to any Mortgage Loan, the
unpaid principal balance thereof as of the opening of business on the last day
of the related Due Period immediately prior to the Cut-Off Date.

     DEBT SERVICE REDUCTION: With respect to any Mortgage Loan, a reduction in
the scheduled Monthly Payment for such Mortgage Loan by a court of competent
jurisdiction in a proceeding under the Bankruptcy Code, except such a reduction
constituting a Deficient Valuation or any reduction that results in a permanent
forgiveness of principal.

     DEFAULT: Any occurrence which is or with notice or the lapse of time or
both would become an Event of Default.

     DEFICIENCY AMOUNT: The meaning provided in the Note Insurance Policy.

     DEFICIENT VALUATION: With respect to any Mortgage Loan, a valuation by a
court of competent jurisdiction of the Mortgaged Property in an amount less than
the then outstanding indebtedness under the Mortgage Loan, or any reduction in
the amount of principal to be paid in connection with any scheduled Monthly
Payment that constitutes a permanent forgiveness of principal, which valuation
or reduction results from a proceeding under the Bankruptcy Code.

     DEFINITIVE NOTES: The meaning specified in Section 4.06 of the Indenture.

     DELETED MORTGAGE LOAN: A Mortgage Loan replaced or to be replaced with an
Eligible Substitute Mortgage Loan.

     DEPOSITOR: AB Mortgage Securities Corp., a Delaware corporation, or its
successor in interest.

     DEPOSITORY OR DEPOSITORY AGENCY: The Depository Trust Company or a
successor appointed by the Indenture Trustee with the approval of the Depositor.
Any successor to the Depository shall be an organization registered as a
"clearing agency" pursuant to Section 17A of the Exchange Act and the
regulations of the Securities and Exchange Commission thereunder.

     DEPOSITORY PARTICIPANT: A Person for whom, from time to time, the
Depository effects book-entry transfers and pledges of securities deposited with
the Depository.


                                       69

<PAGE>



     DETERMINATION DATE: With respect to any Payment Date, the 15th of the
related month, or if the 15th day of such month is not a Business Day, the
immediately preceding Business Day.

     DUE DATE: The first day of the month of the related Payment Date.

     DUE PERIOD: With respect to any Mortgage Loan and Due Date, the period
commencing on the second day of the month preceding the month of such Payment
Date (or, with respect to the first Due Period, the day following the Cut-Off
Date) and ending on the related Due Date.

     ELIGIBLE ACCOUNT: An account that is any of the following: (i) maintained
with a depository institution the short term deposits of which have been rated
by each Rating Agency in its highest rating available, or (ii) an account or
accounts in a depository institution in which such accounts are fully insured to
the limits established by the FDIC, provided that any deposits not so insured
shall, to the extent acceptable to the Note Insurer and each Rating Agency, as
evidenced in writing, be maintained such that (as evidenced by an Opinion of
Counsel delivered to the Indenture Trustee, the Note Insurer and each Rating
Agency) the Indenture Trustee have a claim with respect to the funds in such
account or a perfected first security interest against any collateral (which
shall be limited to Eligible Investments) securing such funds that is superior
to claims of any other depositors or creditors of the depository institution
with which such account is maintained, or (iii) in the case of the Collection
Account, either (A) a trust account or accounts maintained at the Corporate
Trust Department of the Indenture Trustee or (B) an account or accounts
maintained at the Corporate Trust Department of the Indenture Trustee, as long
as its short term debt obligations are rated P-1 by Moody's and A-1 by Standard
& Poor's or better and its long term debt obligations are rated A2 by Moody's
and A by Standard & Poor's or better, or (iv) in the case of the Collection
Account and the Payment Account, a trust account or accounts maintained in the
corporate trust division of the Indenture Trustee, or (v) an account or accounts
of a depository institution acceptable to each Rating Agency as evidenced in
writing by each Rating Agency that use of any such account as the Collection
Account or the Payment Account will not reduce the rating assigned to any of the
Securities by such Rating Agency below investment grade without taking into
account the Note Insurance Policy and acceptable to the Note Insurer as
evidenced in writing.

     ELIGIBLE INVESTMENTS: One or more of the following:

               (i) direct obligations of, and obligations fully guaranteed by,
          the United States of America, the Federal Home Mortgage Corporation,
          the Federal National Mortgage Association, the Federal Home Loan Banks
          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;

               (ii) (A) demand and time deposits in, certificates of deposit of,
          banker's acceptances issued by or federal funds sold by any depository
          institution or trust company (including the Indenture Trustee or its
          agent acting in their respective commercial capacities) incorporated
          under the laws of the United States of America


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          or any State thereof and subject to supervision and examination by
          federal and/or state authorities, so long as at the time of such
          investment or contractual commitment providing for such investment,
          such depository institution or trust company has a short term
          unsecured debt rating in the highest available rating category of each
          of the Rating Agencies and provided that each such investment has an
          original maturity of no more than 365 days, and (B) any other demand
          or time deposit or deposit which is fully insured by the Federal
          Deposit Insurance Corporation;

               (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 S&P and A2 or higher by Moody's;
          provided, however, that collateral transferred pursuant to such
          repurchase obligation must (A) be valued weekly at current market
          price plus accrued interest, (B) pursuant to such valuation, equal, at
          all times, 105% of the cash transferred by the Indenture Trustee in
          exchange for such collateral and (C) be delivered to the Indenture
          Trustee or, if the Indenture Trustee is supplying the collateral, an
          agent for the Indenture 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 of the Rating
          Agencies at the time of such investment;

               (vi) a guaranteed investment contract approved by each of the
          Rating Agencies and the Note Insurer 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) money market funds having ratings in the highest available
          long-term rating category of each of the Rating Agencies at the time
          of such investment; any such money market funds which provide for
          demand withdrawals being conclusively deemed to satisfy any maturity
          requirement for Eligible Investments set forth in the Indenture; and

               (viii) any investment approved in writing by each of the Rating
          Agencies and the Note Insurer.


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     The Indenture Trustee may purchase from or sell to itself or an affiliate,
as principal or agent, the Eligible Investments listed above.

Provided, however, that each such instrument shall be acquired in an arm's
length transaction and no such instrument shall be an Eligible Investment if it
represents, either (1) the right to receive only interest payments with respect
to the underlying debt instrument or (2) the right to receive 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 greater than 120% of the yield to maturity at par of such underlying
obligations; provided further, however, that each such instrument acquired shall
not be acquired at a price in excess of par.

     ELIGIBLE 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 an Officer's Certificate delivered to the Indenture Trustee, (i)
have an outstanding principal balance, after deduction of the principal portion
of the monthly 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 outstanding principal balance, after such deduction), not in excess of
the outstanding principal balance of the Deleted Mortgage Loan (the amount of
any shortfall to be deposited by the Seller in the Collection Account in the
month of substitution); (ii) comply with each representation and warranty set
forth in clauses (ii) through (lxxvii) of Section 3.1(b) of the Mortgage Loan
Purchase Agreement other than clauses (ii), (iii), (v)-(xi), (xiii)-(xiv), (l),
(lxvi), (lxviii), (lxxi), (lxxiii); (iii) have a Mortgage Rate and Gross Margin
no lower than and not more than 1% per annum higher than the Mortgage Rate and
Gross Margin, respectively, of the Deleted Mortgage Loan as of the date of
substitution; (iv) have a Combined Loan-to-Value Ratio at the time of
substitution no higher than that of the Deleted Mortgage Loan at the time of
substitution; (v) have a remaining term to stated maturity not greater than (and
not more than one year less than) that of the Deleted Mortgage Loan and (vi) not
be 30 days or more delinquent.

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

     EVENT OF DEFAULT: With respect to the Indenture, any one of the following
events (whatever the reason for such Event of Default and whether it shall be
voluntary or involuntary or be effected by operation of law or pursuant to any
judgment, decree or order of any court or any order, rule or regulation of any
administrative or governmental body):

               (i) a default in (a) the payment of the Interest Payment Amount
          or the Principal Payment Amount with respect to a Payment Date on such
          Payment Date or (b) the Subordination Increase Amount or the Available
          Funds Cap Carry-Forward Amount, but only, with respect to clause (b),
          to the extent funds are available to make such payment as provided in
          the Indenture; or



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               (ii) the failure by the Issuer on the Final Scheduled Payment
          Date to reduce the Note Principal Balance to zero; or

               (iii) there occurs a default in the observance or performance of
          any covenant or agreement of the Issuer made in the Indenture, or any
          representation or warranty of the Issuer made in the Indenture or in
          any certificate or other writing delivered pursuant hereto or in
          connection herewith proving to have been incorrect in any material
          respect as of the time when the same shall have been made, and such
          default shall continue or not be cured, or the circumstance or
          condition in respect of which such representation or warranty was
          incorrect shall not have been eliminated or otherwise cured, for a
          period of 30 days after there shall have been given, by registered or
          certified mail, to the Issuer by the Indenture Trustee or to the
          Issuer and the Indenture Trustee by the Note Insurer, or if a Note
          Insurer Default exists the Holders of at least 25% of the Outstanding
          Amount of the Notes, a written notice specifying such default or
          incorrect representation or warranty and requiring it to be remedied
          and stating that such notice is a notice of default hereunder; or

               (iv) there occurs the filing of a decree or order for relief by a
          court having jurisdiction in the premises in respect of the Issuer or
          any substantial part of the Trust Estate in an involuntary case under
          any applicable federal or state bankruptcy, insolvency or other
          similar law now or hereafter in effect, or appointing a receiver,
          liquidator, assignee, custodian, trustee, sequestrator or similar
          official of the Issuer or for any substantial part of the Trust
          Estate, or ordering the winding-up or liquidation of the Issuer's
          affairs, and such decree or order shall remain unstayed and in effect
          for a period of 60 consecutive days; or

               (v) there occurs the commencement by the Issuer of a voluntary
          case under any applicable federal or state bankruptcy, insolvency or
          other similar law now or hereafter in effect, or the consent by the
          Issuer to the entry of an order for relief in an involuntary case
          under any such law, or the consent by the Issuer to the appointment or
          taking possession by a receiver, liquidator, assignee, custodian,
          trustee, sequestrator or similar official of the Issuer or for any
          substantial part of the assets of the Trust Estate, or the making by
          the Issuer of any general assignment for the benefit of creditors, or
          the failure by the Issuer generally to pay its debts as such debts
          become due, or the taking of any action by the Issuer in furtherance
          of any of the foregoing.

     EVENT OF SERVICER TERMINATION: With respect to the Servicing Agreement, a
Servicing Default as defined in Section 6.01 of the Servicing Agreement.

     EXCESS SUBORDINATION AMOUNT: With respect to any Payment Date, the excess,
if any, of (a) the Subordination Amount that would apply on such Payment Date
after taking into account all distributions to be made on such Payment Date
(exclusive of any reductions thereto attributable to


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Subordination Reduction Amounts on such Payment Date) over (b) the Required
Subordination Amount for such Payment Date.

     EXCHANGE ACT: The Securities Exchange Act of 1934, as amended, and the
rules and regulations promulgated thereunder.

     EXPENSE ADJUSTED MORTGAGE RATE: For any Mortgage Loan, the rate equal to
the then applicable Mortgage Rate thereon minus the sum of (i) the Minimum
Spread and (ii) the Servicing Fee Rate and (iii) the Indenture Trustee Fee Rate.

     EXPENSES: The meaning specified in Section 7.02 of the Trust Agreement.

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

     FHLMC: The Federal Home Loan Mortgage Corporation, or any successor
thereto.

     FINAL SCHEDULED PAYMENT DATE: The Payment Date occurring in _________ 20__.

     FIXED RATE MORTGAGE LOAN: Any Mortgage Loan with a fixed rate of interest.

     FNMA: The Federal National Mortgage Association, or any successor thereto.

     FORECLOSURE PROFIT: With respect to a Liquidated Mortgage Loan, the amount,
if any, by which (i) the aggregate of its Net Liquidation Proceeds exceeds (ii)
the related Principal Balance (plus accrued and unpaid interest thereon at the
applicable Mortgage Rate from the date interest was last paid through the date
of receipt of the final Liquidation Proceeds) of such Liquidated Mortgage Loan
immediately prior to the final recovery of its Liquidation Proceeds.

     GRANT: Pledge, bargain, sell, warrant, alienate, remise, release, convey,
assign, transfer, create, and grant a lien upon and a security interest in and
right of set-off against, deposit, set over and confirm pursuant to the
Indenture. A Grant of the Collateral or of any other agreement or instrument
shall include all rights, powers and options (but none of the obligations) of
the granting party thereunder, including the immediate and continuing right to
claim for, collect, receive and give receipt for principal and interest payments
in respect of such collateral or other agreement or instrument and all other
moneys payable thereunder, to give and receive notices and other communications,
to make waivers or other agreements, to exercise all rights and options, to
bring proceedings in the name of the granting party or otherwise, and generally
to do and receive anything that the granting party is or may be entitled to do
or receive thereunder or with respect thereto.

     GROSS MARGIN: With respect to any Adjustable Rate Mortgage Loan, the
percentage set forth as the "Gross Margin" for such Mortgage Loan on the
Mortgage Loan Schedule, as adjusted from time to time in accordance with the
terms of the Servicing Agreement.



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     INDEMNIFIED PARTY: The meaning specified in Section 7.02 of the Trust
Agreement.

     INDENTURE: The indenture dated as of ______ __, 200_, between the Issuer,
as debtor, and the Indenture Trustee, as Indenture Trustee.

     INDENTURE TRUSTEE: _________________________________________, a national
banking association, and its successors and assigns or any successor indenture
trustee appointed pursuant to the terms of the Indenture.

     INDENTURE TRUSTEE FEE: With respect to each Mortgage Loan and any Payment
Date the product of (i) the Indenture Trustee Fee Rate divided by 12 and (ii)
the Principal Balance of such Mortgage Loans as of such date.

     INDENTURE TRUSTEE FEE RATE: _____% per annum.

     INDEPENDENT: When used with respect to any specified Person, the Person (i)
is in fact independent of the Issuer, any other obligor on the Notes, the
Seller, the Issuer, the Depositor and any Affiliate of any of the foregoing
Persons, (ii) does not have any direct financial interest or any material
indirect financial interest in the Issuer, any such other obligor, the Seller,
the Issuer, the Depositor or any Affiliate of any of the foregoing Persons and
(iii) is not connected with the Issuer, any such other obligor, the Seller, the
Issuer, the Depositor or any Affiliate of any of the foregoing Persons as an
officer, employee, promoter, underwriter, trustee, partner, director or person
performing similar functions.

     INDEPENDENT CERTIFICATE: A certificate or opinion to be delivered to the
Indenture Trustee under the circumstances described in, and otherwise complying
with, the applicable requirements of Section 10.01 of the Indenture, made by an
Independent appraiser or other expert appointed by an Issuer Order and approved
by the Indenture Trustee in the exercise of reasonable care, and such opinion or
certificate shall state that the signer has read the definition of "Independent"
in this Indenture and that the signer is Independent within the meaning thereof.

     INDEX: With respect to any Adjustable Rate Mortgage Loan, index for the
adjustment of the Mortgage Rate set forth as such on the related Mortgage Note.

     INITIAL NOTE PRINCIPAL BALANCE: With respect to the Notes, $______________.

     INITIAL SUBSERVICER: _____________, a __________ corporation.

     INSOLVENCY EVENT: With respect to a specified Person, (a) the filing of a
decree or order for relief by a court having jurisdiction in the premises in
respect of such Person or any substantial part of its property in an involuntary
case under any applicable bankruptcy, insolvency or other similar law now or
hereafter in effect, or appointing a receiver, liquidator, assignee, custodian,
trustee, sequestrator or similar official for such Person or for any substantial
part of its property, or ordering


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the winding-up or liquidation of such Person's affairs, and such decree or order
shall remain unstayed and in effect for a period of 60 consecutive days; or (b)
the commencement by such Person of a voluntary case under any applicable
bankruptcy, insolvency or other similar law now or hereafter in effect, or the
consent by such Person to the entry of an order for relief in an involuntary
case under any such law, or the consent by such Person to the appointment of or
taking possession by a receiver, liquidator, assignee, custodian, trustee,
sequestrator or similar official for such Person or for any substantial part of
its property, or the making by such Person of any general assignment for the
benefit of creditors, or the failure by such Person generally to pay its debts
as such debts become due or the admission by such Person in writing (as to which
the Indenture Trustee shall have notice) of its inability to pay its debts
generally, or the adoption by the Board of Directors or managing member of such
Person of a resolution which authorizes action by such Person in furtherance of
any of the foregoing.

     INSURANCE AGREEMENT: The insurance and reimbursement agreement dated as of
_____ __, 200_, among the Master Servicer, the Seller, the Depositor, the
Issuer, Indenture Trustee and the Note Insurer, including any amendments and
supplements thereto.

     INSURANCE PROCEEDS: Proceeds paid by any insurer (other than the Note
Insurer) pursuant to any insurance policy covering a Mortgage Loan which are
required to be remitted to the Master Servicer, or amounts required to be paid
by the Master Servicer pursuant to the Servicing Agreement, net of any component
thereof (i) covering any expenses incurred by or on behalf of the Master
Servicer in connection with obtaining such proceeds, (ii) that is applied to the
restoration or repair of the related Mortgaged Property, (iii) released to the
Mortgagor in accordance with the Master Servicer's normal servicing procedures
or (iv) required to be paid to any holder of a mortgage senior to such Mortgage
Loan.

     INSURED PAYMENT: Shall have the meaning set forth in the Note Insurance
Policy.

     INTEREST DETERMINATION DATE: With respect to any Interest Period, the
second London Business Day preceding the commencement of such Interest Period.

     INTEREST PAYMENT AMOUNT: With respect to any Payment Date, an amount equal
to interest accrued during the related Interest Period on the Note Principal
Balance thereof at the then-applicable Note Interest Rate, minus any Prepayment
Interest Shortfalls and Relief Act Shortfalls to the extent not covered by the
Master Servicer by Compensating Interest for such Payment Date.

     INTEREST PERIOD: With respect to any Payment Date other than the first
Payment Date, the period beginning on the preceding Payment Date and ending on
the day preceding such Payment Date, and in the case of the first Payment Date,
the period beginning on the Closing Date and ending on the day preceding the
first Payment Date.



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     INTEREST RATE ADJUSTMENT DATE: With respect to each Mortgage Loan, the date
or dates on which the Mortgage Rate is adjusted in accordance with the related
Mortgage Note.

     ISSUER: The AB Mortgage Securities Corp. MBN Trust Series 200_-_, a
Delaware business trust, or its successor in interest.

     ISSUER REQUEST: A written order or request signed in the name of the Issuer
by any one of its Authorized Officers and approved in writing by the Note
Insurer, so long as no Note Insurer Default exists and delivered to the
Indenture Trustee.

     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, Delaware or
California, or in the city of London, England are required or authorized by law
to be closed.

     LIEN: Any mortgage, deed of trust, pledge, conveyance, hypothecation,
assignment, participation, deposit arrangement, encumbrance, lien (statutory or
other), preference, priority right or interest or other security agreement or
preferential arrangement of any kind or nature whatsoever, including, without
limitation, any conditional sale or other title retention agreement, any
financing lease having substantially the same economic effect as any of the
foregoing and the filing of any financing statement under the UCC (other than
any such financing statement filed for informational purposes only) or
comparable law of any jurisdiction to evidence any of the foregoing; provided,
however, that any assignment pursuant to Section 6.02 of the Servicing Agreement
shall not be deemed to constitute a Lien.

     LIFETIME RATE CAP: With respect to each Mortgage Loan with respect to which
the related Mortgage Note provides for a lifetime rate cap, the maximum Mortgage
Rate permitted over the life of such Mortgage Loan under the terms of such
Mortgage Note, as set forth on the Mortgage Loan Schedule and initially as set
forth on Exhibit A to the Servicing Agreement.

     LIQUIDATED MORTGAGE LOAN: With respect to any Payment Date, any Mortgage
Loan in respect of which the Master Servicer has determined, in accordance with
the servicing procedures specified in the Servicing Agreement, as of the end of
the related Prepayment Period that substantially all Liquidation Proceeds which
it reasonably expects to recover with respect to the disposition of the related
REO Property have been recovered.

     LIQUIDATION EXPENSES: Out-of-pocket expenses (exclusive of overhead) which
are incurred by or on behalf of the Master Servicer in connection with the
liquidation of any Mortgage Loan and not recovered under any insurance policy,
such expenses including, without limitation, legal fees and expenses, any
unreimbursed amount expended (including, without limitation, amounts advanced to
correct defaults on any mortgage loan which is senior to such Mortgage Loan and
amounts advanced to keep current or pay off a mortgage loan that is senior to
such Mortgage Loan) respecting the related Mortgage Loan and any related and
unreimbursed expenditures for real estate property taxes or for property
restoration, preservation or insurance against casualty loss or damage.


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     LIQUIDATION PROCEEDS: Proceeds (including Insurance Proceeds but not
including amounts drawn under the Note Insurance Policy) received in connection
with the liquidation of any Mortgage Loan or related REO Property, whether
through trustee's sale, foreclosure sale or otherwise.

     LOAN YEAR: With respect to any Mortgage Loan, the one year period
commencing on the day succeeding the origination of such Mortgage Loan and
ending on the anniversary date of such Mortgage Loan, and each annual period
thereafter.

     LONDON BUSINESS DAY: Any day on which banks in the City of London, England
are open and conducting transactions in United States dollars.

     LOST NOTE AFFIDAVIT: With respect to any Mortgage Loan as to which the
original Mortgage Note has been permanently lost or destroyed and has not been
replaced, an affidavit from the Seller certifying that the original Mortgage
Note has been lost, misplaced or destroyed (together with a copy of the related
Mortgage Note).

     MASTER SERVICER: _______________________, a __________ corporation, and its
successors and assigns.

     MASTER SERVICING FEE: With respect to each Mortgage Loan and any Payment
Date the product of (i) the Master Servicing Fee Rate divided by 12 and (ii) the
Principal Balance of such Mortgage Loans as of such date.

     MASTER SERVICING FEE RATE: With respect to each Mortgage Loan, ____% per
annum.

     MAXIMUM NOTE INTEREST RATE: With respect to any Payment Date, the per annum
rate equal to the fraction, expressed as a percentage, the numerator of which is
(i) an amount equal to (A) 1/12 of the aggregate Principal Balance of the then
outstanding Mortgage Loans times the weighted average of the Expense Adjusted
Maximum Mortgage Rates on the then outstanding Mortgage Loans minus (B) the
Administrative Fee for such Payment Date, and the denominator of which is (ii)
an amount equal to (A) the aggregate Note Principal Balance of the Notes
multiplied by (B) the actual number of days elapsed in the related Interest
Period divided by 360.

     MAXIMUM MORTGAGE RATE: With respect to each Adjustable Rate Mortgage Loan,
the maximum Mortgage Rate.

     MINIMUM MORTGAGE RATE: With respect to each Adjustable Rate Mortgage Loan,
the minimum Mortgage Rate.

     MINIMUM SPREAD: ____% per annum.

     MONTHLY PAYMENT: With respect to any Mortgage Loan (including any REO
Property) and any Due Date, the payment of principal and interest due thereon in
accordance with the amortization


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<PAGE>



schedule at the time applicable thereto (after adjustment, if any, for partial
Prepayments and for Deficient Valuations occurring prior to such Due Date but
before any adjustment to such amortization schedule by reason of any bankruptcy,
other than a Deficient Valuation, or similar proceeding or any moratorium or
similar waiver or grace period).

     MOODY'S: Moody's Investors Service, Inc. or its successor in interest.

     MORTGAGE: The mortgage, deed of trust or other instrument creating a first
or second lien on an estate in fee simple interest in real property securing a
Mortgage Loan.

     MORTGAGE FILE: The file containing the Related Documents pertaining to a
particular Mortgage Loan and any additional documents required to be added to
the Mortgage File pursuant to the Mortgage Loan Purchase Agreement or the
Servicing Agreement.

     MORTGAGE LOAN PURCHASE AGREEMENT: The Mortgage Loan Purchase Agreement,
dated as of the Cut-Off Date, between the Seller, as seller, and the Purchaser,
as purchaser, with respect to the Mortgage Loans, dated as of ______ __, 200_.

     MORTGAGE LOAN SCHEDULE: With respect to any date, the schedule of Mortgage
Loans held by the Issuer on such date. The initial schedule of Mortgage Loans as
of the Cut-Off Date is the schedule set forth in Exhibit A of the Servicing
Agreement, which schedule sets forth as to each Mortgage Loan

                    (i) the loan number and name of the Mortgagor;

                    (ii) the street address, city, state and zip code of the
               Mortgaged Property;

                    (iii) the Mortgage Rate;

                    (iv) the Maximum Rate;

                    (v) the maturity date;

                    (vi) the original principal balance;

                    (vii) the first payment date;

                    (viii) the type of Mortgaged Property;

                    (ix) the Monthly Payment in effect as of the Cut-Off Date;

                    (x) the Cut-off Date Principal Balance;



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                    (xi) the occupancy status;

                    (xii) the purpose of the Mortgage Loan;

                    (xiii) the Appraised Value of the Mortgaged Property;

                    (xiv) the original term to maturity;

                    (xv) the paid-through date of the Mortgage Loan;

                    (xvi) the Loan-to-Value Ratio; and

                    (xvii) whether or not the Mortgage Loan was underwritten
               pursuant to a limited documentation program.

     The Mortgage Loan Schedule shall also set forth the total of the amounts
described under (ix) above for all of the Mortgage Loans.

     MORTGAGE LOANS: At any time, collectively, all Mortgage Loans that have
been sold to the Depositor under the Mortgage Loan Purchase Agreement or
substituted for pursuant to Section 2.1 and 3.1 of the Mortgage Loan Purchase
Agreement and transferred and conveyed to the Issuer, in each case together with
the Related Documents, and that remain subject to the terms thereof.

     MORTGAGE NOTE: The note or other evidence of the indebtedness of a
Mortgagor under a Mortgage Loan.

     MORTGAGE RATE: With respect to any Mortgage Loan, the annual rate at which
interest accrues on such Mortgage Loan.

     MORTGAGED PROPERTY: The underlying property, including real property and
improvements thereon, securing a Mortgage Loan.

     MORTGAGOR: The obligor or obligors under a Mortgage Note.

     NET LIQUIDATION PROCEEDS: With respect to any Liquidated Mortgage Loan,
Liquidation Proceeds net of Liquidation Expenses.

     NET MONTHLY EXCESS CASHFLOW: For any Payment Date, the amount of Available
Funds and any Insured Payment remaining after distributions pursuant to clauses
(i) through (iii) of Section 3.05 of the Indenture (minus any Insured Payment
and any Subordination Reduction Amount).



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     NET MORTGAGE RATE: With respect to any Mortgage Loan and any day, the
related Mortgage Rate less the sum of the related Servicing Fee Rate, the
Administrative Fee Rate and the Indenture Trustee Fee Rate.

     NONRECOVERABLE ADVANCE: Any advance (i) which was previously made or is
proposed to be made by the Master Servicer; and (ii) which, in the good faith
judgment of the Master Servicer, will not or, in the case of a proposed advance,
would not, be ultimately recoverable by the Master Servicer from Liquidation
Proceeds, Insurance Proceeds or future payments on any Mortgage Loan.

     NOTE INSURANCE POLICY: The bond guaranty insurance policy number 21885,
issued by the Note Insurer to the Indenture Trustee for the benefit of the
Noteholders.

     NOTE INSURER: MBIA Insurance Corporation, a New York insurance company, any
successor thereto or any replacement bond insurer substituted pursuant to
Section 3.29 of the Indenture.

     NOTE INSURER DEFAULT: The existence and continuance of any of the
following: (a) a failure by the Note Insurer to make a payment required under
the Note Insurance Policy in accordance with its terms; or (b)(i) the Note
Insurer (A) files any petition or commences any case or proceeding under any
provision or chapter of the Bankruptcy Code or any other similar federal or
state law relating to insolvency, bankruptcy, rehabilitation, liquidation or
reorganization, (B) makes a general assignment for the benefit of its creditors,
or (C) has an order for relief entered against it under the Bankruptcy Code or
any other similar federal or state law relating to insolvency, bankruptcy,
rehabilitation, liquidation or reorganization which is final and nonappealable;
or (ii) a court of competent jurisdiction, the New York Department of Insurance
or other competent regulatory authority enters a final and nonappealable order,
judgment or decree (A) appointing a custodian, trustee, agent or receiver for
the Note Insurer or for all or any material portion of its property or (B)
authorizing the taking of possession by a custodian, trustee, agent or receiver
of the Note Insurer (or the taking of possession of all or any material portion
of the property of the Note Insurer).

     NOTE INTEREST RATE: With respect to each Payment Date after the first
Payment Date, a floating rate equal to the lesser of (i) with respect to each
Payment Date up to and including the Payment Date in _________ 200_, One-Month
LIBOR plus ____%, and with respect to each Payment Date thereafter, One-Month
LIBOR plus ____% and (ii) the Available Funds Interest Rate with respect to such
Payment Date. The Note Interest Rate for the first Payment Date will equal ____%
per annum.

     NOTE OWNER: The Beneficial Owner of a Note.

     NOTE PERCENTAGE: With respect to any Payment Date and any Note, the ratio
expressed as a percentage of the Note Principal Balance of such Note to the
aggregate Note Principal Balance of all Notes immediately prior to such Payment
Date.



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     NOTE PRINCIPAL BALANCE: With respect to any Note, the initial Note
Principal Balance thereof minus all amounts distributed in respect of principal
with respect to such Note.

     NOTE REGISTER: The register maintained by the Note Registrar in which the
Note Registrar shall provide for the registration of Notes and of transfers and
exchanges of Notes.

     NOTE REGISTRAR: The Indenture Trustee, in its capacity as Note Registrar.

     NOTEHOLDER: The Person in whose name a Note is registered in the Note
Register, except that, any Note registered in the name of the Depositor, the
Issuer or the Indenture Trustee or any Affiliate of any of them shall be deemed
not to be outstanding and the registered holder will not be considered a
Noteholder or holder for purposes of giving any request, demand, authorization,
direction, notice, consent or waiver under the Indenture or the Trust Agreement
provided that, in determining whether the Indenture Trustee shall be protected
in relying upon any such request, demand, authorization, direction, notice,
consent or waiver, only Notes that the Indenture Trustee or the Owner Trustee
knows to be so owned shall be so disregarded. Owners of Notes that have been
pledged in good faith may be regarded as Holders if the pledgee establishes to
the satisfaction of the Indenture Trustee or the Owner Trustee the pledgee's
right so to act with respect to such Notes and that the pledgee is not the
Issuer, any other obligor upon the Notes or any Affiliate of any of the
foregoing Persons. Any bonds on which payments are made under the Note Insurance
Policy shall be deemed Outstanding until the Note Insurer has been reimbursed
with respect thereto and the Note Insurer shall be deemed the Noteholder thereof
to the extent of such unreimbursed payment.

     NOTES: The Notes designated as the "Notes" in the Indenture.

     OFFICER'S CERTIFICATE: With respect to the Master Servicer, a certificate
signed by the President, Managing Director, a Director, a Vice President or an
Assistant Vice President, of the Master Servicer and delivered to the Indenture
Trustee. With respect to the Issuer, a certificate signed by any Authorized
Officer of the Issuer, under the circumstances described in, and otherwise
complying with, the applicable requirements of Section 10.01 of the Indenture,
and delivered to the Indenture Trustee. Unless otherwise specified, any
reference in the Indenture to an Officer's Certificate shall be to an Officer's
Certificate of any Authorized Officer of the Issuer.

     ONE-MONTH LIBOR: With respect to any Interest Period, the rate determined
by the Indenture Trustee on the related Interest Determination Date on the basis
of the offered rates of the Reference Banks for one-month United States dollar
deposits, as such rates appear on the Reuters Screen LIBOR Page, as of 11:00
a.m. (London time) on such Interest Determination Date. On each Interest
Determination Date, One-Month LIBOR for the related Interest Period will be
established by the Indenture Trustee as follows:



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               (i) If on such Interest Determination Date two or more Reference
          Banks provide such offered quotations, One-Month LIBOR for the related
          Interest Period shall be the arithmetic mean of such offered
          quotations (rounded upwards if necessary to the nearest whole multiple
          of 1/16%).

               (ii) If on such Interest Determination Date fewer than two
          Reference Banks provide such offered quotations, One-Month LIBOR for
          the related Interest Period shall be the higher of (i) One-Month LIBOR
          as determined on the previous Interest Determination Date and (ii) the
          Reserve Interest Rate.

     OPINION OF COUNSEL: A written opinion of counsel acceptable to Note Insurer
who may be in-house counsel for the Master Servicer if acceptable to the
Indenture Trustee, the Note Insurer and the Rating Agencies or counsel for the
Depositor, as the case may be.

     ORIGINAL SPECIFIED SUBORDINATION AMOUNT: An amount equal to ____% of the
aggregate Principal Balance of the Mortgage Loans as of the Cut-Off Date.

     ORIGINAL VALUE: Except in the case of a refinance Mortgage Loan, the lesser
of the Appraised Value or sales price of Mortgaged Property at the time a
Mortgage Loan is closed, and for a refinance Mortgage Loan, the Original Value
is the value of such property set forth in an appraisal acceptable to the Master
Servicer.

     OUTSTANDING: With respect to the Notes, as of the date of determination,
all Notes theretofore executed, authenticated and delivered under this Indenture
except:

               (i) Notes theretofore cancelled by the Note Registrar or
          delivered to the Indenture Trustee for cancellation; and

               (ii) Notes in exchange for or in lieu of which other Notes have
          been executed, authenticated and delivered pursuant to the Indenture
          unless proof satisfactory to the Indenture Trustee is presented that
          any such Notes are held by a holder in due course;

               (iii) Notes that have been paid with funds provided under the
          Note Insurance Policy shall be deemed to be Outstanding until the Note
          Insurer has been reimbursed with respect thereto.

     OWNER TRUST: The AB Mortgage Securities Corp. MBN Trust Series 200_-_ to be
created pursuant to the Trust Agreement.

     OWNER TRUST ESTATE: The corpus of the Issuer created by the Trust Agreement
which consists of items in Section 2.01 of the Trust Agreement.



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     OWNER TRUSTEE: ________________________ and its successors and assigns or
any successor owner trustee appointed pursuant to the terms of the Trust
Agreement.

     OWNER TRUSTEE FEE:

     OWNER TRUSTEE FEE RATE: ______% per annum.

     PAYING AGENT: Any paying agent or co-paying agent appointed pursuant to
Section 3.03 of the Indenture, which initially shall be the Indenture Trustee.

     PAYMENT ACCOUNT: The account established by the Indenture Trustee pursuant
to Section 8.02 of the Indenture and Section 4.03 of the Servicing Agreement.
The Payment Account shall be an Eligible Account.

     PAYMENT DATE: The 25th day of each month, or if such day is not a Business
Day, then the next Business Day.

     PERCENTAGE INTEREST: With respect to any Note, the percentage obtained by
dividing the Note Principal Balance of such Note by the aggregate of the Note
Principal Balances of all Notes. With respect to any Certificate, the percentage
on the face thereof.

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

     POOL BALANCE: With respect to any date, the aggregate of the Principal
Balances of all Mortgage Loans as of such date.

     PREFERENCE AMOUNT: Any amount previously distributed to an Owner on the
Notes that is recoverable and sought to be recovered as a voidable preference by
a trustee in bankruptcy pursuant to the United States Bankruptcy Code (11
U.S.C.), as amended from time to time, in accordance with a final nonappealable
order of a court having competent jurisdiction.

     PREMIUM AMOUNT: The amount of premium due to the Note Insurer in accordance
with the terms of the Insurance Agreement.



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     PREPAYMENT INTEREST SHORTFALL: As to any Payment Date and any Mortgage Loan
(other than a Mortgage Loan relating to an REO Property) that was the subject of
(a) a Principal Prepayment in full during the related Prepayment Period, an
amount equal to the excess of interest accrued during the related Prepayment
Period at the Net Mortgage Rate on the Principal Balance of such Mortgage Loan
over the amount of interest (adjusted to the Net Mortgage Rate) paid by the
Mortgagor for such Prepayment Period to the date of such Principal Prepayment in
full or (b) a partial Prepayment during the prior calendar month, an amount
equal to interest accrued during the related Prepayment Period at the Net
Mortgage Rate on the amount of such partial Prepayment.

     PREPAYMENT PERIOD: As to any Payment Date, the calendar month preceding the
month of distribution.

     PRIMARY INSURANCE POLICY: Each primary policy of mortgage guaranty
insurance issued by a Qualified Insurer or any replacement policy therefor.

     PRINCIPAL BALANCE: With respect to any Mortgage Loan or related REO
Property, at any given time, (i) the Cut-off Date Principal Balance of the
Mortgage Loan, minus (ii) the sum of (a) the principal portion of the Monthly
Payments due with respect to such Mortgage Loan or REO Property during each Due
Period ending prior to the most recent Payment Date which were received or with
respect to which an Advance was made, and (b) all Principal Prepayments with
respect to such Mortgage Loan or REO Property, and all Insurance Proceeds,
Liquidation Proceeds and REO Proceeds, to the extent applied by the Master
Servicer as recoveries of principal in accordance with the Servicing Agreement
with respect to such Mortgage Loan or REO Property, and (c) any Realized Loss
with respect thereto for any previous Payment Date.

     PRINCIPAL PAYMENT AMOUNT: With respect to any Payment Date (a) other than
the Final Scheduled Payment Date, and the first Payment Date following any
acceleration of the Notes following an Event of Default, the lesser of (a) the
sum of the Available Funds remaining after distributions pursuant to clause (i)
of Section 3.05 of the Indenture and any portion of any Insured Payment for such
Payment Date representing a Subordination Deficit and (b) the sum of:

     (1) the principal portion of all Monthly Payments received during the
related Due Period or advanced on each Mortgage Loan;

     (2) the Principal Balance of any Mortgage Loan repurchased during the
related Prepayment Period (or deemed to have been so repurchased) pursuant to
the Mortgage Loan Purchase Agreement or Section 3.18 of the Servicing Agreement
and the amount of any Substitution Adjustment Amounts during the related
Prepayment Period;

     (3) the principal portion of all other unscheduled collections (including,
without limitation, Principal Prepayments in full, partial Prepayments,
Insurance Proceeds, Liquidation Proceeds and REO Proceeds) received during the
related Prepayment Period to the extent applied by the Master Servicer as
payments or recoveries of principal of the related Mortgage Loan;


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     (4) any Insured Payment made with respect to any Subordination Deficit; and

     MINUS

     (5) the amount of any Subordination Reduction Amount for such Payment Date;

     and (b) with respect to the Final Scheduled Payment Date, and the first
Payment Date following any acceleration of the Notes following an Event of
Default, the amount necessary to reduce the Note Principal Balance to zero.

     PRINCIPAL PREPAYMENT: Any payment of principal made by the Mortgagor on a
Mortgage Loan which is received in advance of its scheduled Due Date and which
is not accompanied by an amount of interest representing scheduled interest due
on any date or dates in any month or months subsequent to the month of
prepayment.

     PROCEEDING: Any suit in equity, action at law or other judicial or
administrative proceeding.

     PURCHASE PRICE: The meaning specified in Section 2.2(a) of the Mortgage
Loan Purchase Agreement.

     PURCHASER: _________________________, a ____________ corporation, and its
successors and assigns.

     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 an insurer
by the Master Servicer and as a FNMA-approved mortgage insurer.

     RATING AGENCY: Any nationally recognized statistical rating organization,
or its successor, that rated the Notes at the request of the Depositor at the
time of the initial issuance of the Notes. Initially, Moody's or Standard &
Poor's. If such organization or a successor is no longer in existence, "Rating
Agency" shall be such nationally recognized statistical rating organization, or
other comparable Person, designated by the Note Insurer so long as no Note
Insurer Default exists, notice of which designation shall be given to the
Indenture Trustee. References herein to the highest short term unsecured rating
category of a Rating Agency shall mean A-1 or better in the case of Standard &
Poor's and P-1 or better in the case of Moody's and in the case of any other
Rating Agency shall mean such equivalent ratings. References herein to the
highest long-term rating category of a Rating Agency shall mean "AAA" in the
case of Standard & Poor's and "Aaa" in the case of Moody's and in the case of
any other Rating Agency, such equivalent rating.



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     REALIZED LOSS: With respect to each Mortgage Loan (or REO Property) as to
which a Cash Liquidation or REO Disposition has occurred, an amount (not less
than zero) equal to (i) the Principal Balance of the Mortgage Loan (or REO
Property) as of the date of Cash Liquidation or REO Disposition, plus (ii)
interest (and REO Imputed Interest, if any) at the Net Mortgage Rate from the
Due Date as to which interest was last paid or advanced to Noteholders up to the
last day of the month in which the Cash Liquidation (or REO Disposition)
occurred on the Principal Balance of such Mortgage Loan (or REO Property)
outstanding during each Due Period that such interest was not paid or advanced,
minus (iii) the proceeds, if any, received during the month in which such Cash
Liquidation (or REO Disposition) occurred, to the extent applied as recoveries
of interest at the Net Mortgage Rate and to principal of the Mortgage Loan, net
of the portion thereof reimbursable to the Master Servicer or any Subservicer
with respect to related Advances or expenses as to which the Master Servicer or
Subservicer is entitled to reimbursement thereunder but which have not been
previously reimbursed. With respect to each Mortgage Loan which has become the
subject of a Deficient Valuation, the difference between the principal balance
of the Mortgage Loan outstanding immediately prior to such Deficient Valuation
and the principal balance of the Mortgage Loan as reduced by the Deficient
Valuation. With respect to each Mortgage Loan which has become the object of a
Debt Service Reduction, the amount of such Debt Service Reduction.

     RECORD DATE: With respect to the Notes and any Payment Date, the last day
of the calendar month preceding such Payment Date.

     REFERENCE BANKS: Bankers Trust Company, Barclay's Bank PLC, The Bank of
Tokyo and National Westminster Bank PLC and their successors in interest;
provided that if any of the foregoing banks are not suitable to serve as a
Reference Bank, then any leading banks selected by the Indenture Trustee which
are engaged in transactions in Eurodollar deposits in the international
Eurocurrency market (i) with an established place of business in London, (ii)
not controlling, under the control of or under common control with the Company
or any Affiliate thereof, (iii) whose quotations appear on the Reuters Screen
LIBO Page on the relevant Interest Determination Date and (iv) which have been
designated as such by the Indenture Trustee.

     REGISTERED HOLDER: The Person in whose name a Note is registered in the
Note Register on the applicable Record Date.

     RELATED DOCUMENTS: With respect to each Mortgage Loan, the documents
specified in Section 2.1(b) of the Mortgage Loan Purchase Agreement and any
documents required to be added to such documents pursuant to the Mortgage Loan
Purchase Agreement, the Trust Agreement, Indenture or the Servicing Agreement.

     RELIEF ACT: The Soldiers' and Sailors' Civil Relief Act of 1940, as
amended.

     RELIEF ACT SHORTFALL: For any Payment Date, As to any Payment Date and any
Mortgage Loan (other than a Mortgage Loan relating to an REO Property) any
shortfalls relating to the Relief Act or similar legislation or regulations.


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     REO ACQUISITION: The acquisition by the Master Servicer on behalf of the
Indenture Trustee for the benefit of the Noteholders of any REO Property
pursuant to Section 3.13 of the Servicing Agreement.

     REO DISPOSITION: As to any REO Property, a determination by the Master
Servicer that it has received substantially all Insurance Proceeds, Liquidation
Proceeds, REO Proceeds and other payments and recoveries (including proceeds of
a final sale) which the Master Servicer expects to be finally recoverable from
the sale or other disposition of the REO Property.

     REO IMPUTED INTEREST: As to any REO Property, for any period, an amount
equivalent to interest (at the Net Mortgage Rate that would have been applicable
to the related Mortgage Loan had it been outstanding) on the unpaid principal
balance of the Mortgage Loan as of the date of acquisition thereof for such
period.

     REO PROCEEDS: Proceeds, net of expenses, received in respect of any REO
Property (including, without limitation, proceeds from the rental of the related
Mortgaged Property) which proceeds are required to be deposited into the
Collection Account only upon the related REO Disposition.

     REO PROPERTY: A Mortgaged Property that is acquired by the Issuer in
foreclosure or by deed in lieu of foreclosure.

     REPURCHASE EVENT: With respect to any Mortgage Loan, either (i) a discovery
that, as of the Closing Date the related Mortgage was not a valid lien on the
related Mortgaged Property subject only to (A) the lien of any prior mortgage
indicated on the Mortgage Loan Schedule, (B) the lien of real property taxes and
assessments not yet due and payable, (C) covenants, conditions, and
restrictions, rights of way, easements and other matters of public record as of
the date of recording of such Mortgage and such other permissible title
exceptions as are permitted and (D) other matters to which like properties are
commonly subject which do not materially adversely affect the value, use,
enjoyment or marketability of the related Mortgaged Property or (ii) with
respect to any Mortgage Loan as to which the Seller delivers an affidavit
certifying that the original Mortgage Note has been lost or destroyed, a
subsequent default on such Mortgage Loan if the enforcement thereof or of the
related Mortgage is materially and adversely affected by the absence of such
original Mortgage Note.

     REPURCHASE PRICE: With respect to any Mortgage Loan required to be
repurchased on any date pursuant to the Mortgage Loan Purchase Agreement or
purchased by the Master Servicer pursuant to the Servicing Agreement, an amount
equal to the sum, without duplication, of (i) 100% of the Principal Balance
thereof (without reduction for any amounts charged off) and (ii) unpaid accrued
interest at the Mortgage Rate on the outstanding principal balance thereof from
the Due Date to which interest was last paid by the Mortgagor to the first day
of the month following the month of purchase plus (iii) the amount of Advances
and any unreimbursed Servicing Advances or unreimbursed Advances made with
respect to such Mortgage Loan plus (iv) any other amounts owed


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to the Master Servicer or the Subservicer pursuant to Section 3.07 of the
Servicing Agreement not included in clause (iii) of this definition.

     REQUIRED SUBORDINATION AMOUNT: With respect to any Payment Date occurring
from the initial Payment Date and ending on the later of (i) the date on which
the aggregate Principal Balance of the Mortgage Loans is 50% of the initial
aggregate Principal Balance of the Mortgage Loans and (ii) the 30th Payment
Date, the greater of:

     (a) the Original Specified Subordination Amount; and

     (b) two times the excess of (1) 50% of the aggregate Principal Balance of
the Mortgage Loans which are 91 or more days delinquent (including Mortgage
Loans in foreclosure and REO Properties) as of such date over (2) two times the
current Net Monthly Excess Cash Flow for such Payment Date; and

     with respect to any Payment Date thereafter, the greatest of:

     (a) the lesser of (1) the Original Specified Subordination Amount and (2)
two times ____% times the aggregate Note Principal Balance as of such Payment
Date;

     (b) two times the excess of (A) 50% of the aggregate Principal Balance of
the Mortgage Loans which are 91 or more days delinquent (including Mortgage
Loans in foreclosure and REO Properties) as of such date over (B) two times the
current Net Monthly Excess Cash Flow for such Payment Date;

     (c) 0.5% of the Cut-Off Date Principal Balance of the Mortgage Loans; and

     (d) an amount equal to the outstanding balance of the four largest Mortgage
Loans as of the Cut-Off Date;

Provided, however, that if (x) a Servicer Default has occurred and is continuing
as of such Payment Date, and such Servicer Default has not been waived by the
Note Insurer or (y) a claim has been made on the Note Insurance Policy by the
Indenture Trustee, the Required Subordination Amount shall not decrease on any
Payment Date.

     RESERVE INTEREST RATE: With respect to any Interest Determination Date, the
rate per annum that the Indenture Trustee determines to be either (i) the
arithmetic mean (rounded upwards if necessary to the nearest whole multiple of
1/16%) of the three-month United States dollar lending rates which New York City
banks selected by the Indenture Trustee are quoting on the relevant Interest
Determination Date to the principal London offices of leading banks in the
London interbank market or (ii) in the event that the Indenture Trustee can
determine no such arithmetic mean, the lowest three-month United States dollar
lending rate which New York City banks selected by the Indenture Trustee are
quoting on such Interest Determination Date to leading European banks.


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     RESPONSIBLE OFFICER: With respect to the Indenture Trustee, any officer of
the Indenture Trustee with direct responsibility for the administration of the
Trust Agreement and also, with respect to a particular matter, any other officer
to whom such matter is referred because of such officer's knowledge of and
familiarity with the particular subject.

     SECURITIES ACT: The Securities Act of 1933, as amended, and the rules and
regulations promulgated thereunder.

     SECURITY: Any of the Certificates or Notes.

     SECURITYHOLDER OR HOLDER: Any Noteholder or a Certificateholder.

     SECURITY INSTRUMENT: A written instrument creating a valid first lien on a
Mortgaged Property securing a Mortgage Note, which may be any applicable form of
mortgage, deed of trust, deed to secure debt or security deed, including any
riders or addenda thereto.

     SELLER: _______________________, a __________ corporation, and its
successors and assigns.

     SERVICING ACCOUNT: The separate trust account created and maintained by the
Master Servicer or each Subservicer with respect to the Mortgage Loans or REO
Property, which shall be an Eligible Account, for collection of taxes,
assessments, insurance premiums and comparable items as described in Section
3.08 of the Servicing Agreement.

     SERVICING ADVANCES: All customary, reasonable and necessary "out of pocket"
costs and expenses incurred in connection with a default, delinquency or other
unanticipated event in the performance by the Master Servicer of its servicing
obligations, including, without duplication, but not limited to, the cost of (i)
the preservation, restoration and protection of a Mortgaged Property, (ii) any
enforcement or judicial proceedings, including foreclosures, (iii) the
management and liquidation of any REO Property and (iv) compliance with the
obligations under Sections 3.10, 3.11, 3.13 of the Servicing Agreement.

     SERVICING AGREEMENT: The Servicing Agreement dated as of ______ __, 200_,
between the Master Servicer and the Issuer.

     SERVICING CERTIFICATE: A certificate completed and executed by a Servicing
Officer on behalf of the Master Servicer in accordance with Section 4.01 of the
Servicing Agreement.

     SERVICING DEFAULT: The meaning assigned in Section 6.01 of the Servicing
Agreement.

     SERVICING FEE: With respect to any Mortgage Loan, the sum of the related
Master Servicing Fee and the related Subservicing Fee.



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     SERVICING FEE RATE: With respect to any Mortgage Loan, the sum of the
related Master Servicing Fee Rate and the Subservicing Fee Rate.

     SERVICING OFFICER: Any officer of the Master Servicer involved in, or
responsible for, the administration and servicing of the Mortgage Loans whose
name and specimen signature appear on a list of servicing officers furnished to
the Indenture Trustee (with a copy to the Note Insurer) by the Master Servicer,
as such list may be amended from time to time.

     SINGLE NOTE: A Note in the amount of $1,000.

     STANDARD & POOR'S: Standard & Poor's Ratings Service, or its successor in
interest.

     SUBORDINATION AMOUNT: As of any Payment Date, the excess, if any, of (x)
the sum of the aggregate Principal Balances of the Mortgage Loans as of the
close of business on the last day of the related Due Period as of such Payment
Date over (y) the Note Principal Balance of the Notes as of such Payment Date
(and following the making of all distributions on such Payment Date)

     SUBORDINATION DEFICIT: With respect to any Payment Date, the amount, if
any, by which (x) the aggregate Note Principal Balance of the Notes as of such
Payment Date, and following the making of all distributions to be made on such
Payment Date (except for any payment to be made as to principal from proceeds of
the Note Insurance Policy), exceeds (y) the aggregate Principal Balances of the
Mortgage Loans as of the close of business on the preceding Due Date on such
Payment Date.

     SUBORDINATION INCREASE AMOUNT: With respect to any Payment Date, the amount
of any Net Monthly Excess Cashflow (including any Subordination Reduction
Amount) available in the Payment Account to increase the Subordination Amount up
to the Required Subordination Amount.

     SUBORDINATION REDUCTION AMOUNT: With respect to any Payment Date, an amount
equal to the lesser of (a) the Excess Subordination Amount and (b) the principal
collections received by the Master Servicer with respect to the prior Due
Period.

     SUBSERVICER: Any Person with whom the Master Servicer has entered into a
Subservicing Agreement as a Subservicer by the Master Servicer and acceptable to
the Note Insurer and the Indenture Trustee, including the Initial Subservicers.

     SUBSERVICING ACCOUNT: An Eligible Account established or maintained by a
Sub servicer as provided for in Section 3.06(e) of the Servicing Agreement.

     SUBSERVICING AGREEMENT: The written contract between the Master Servicer
and any Subservicer relating to servicing and administration of certain Mortgage
Loans as provided in Section 3.02 of the Servicing Agreement.



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     SUBSERVICING FEE: With respect to each Mortgage Loan and any date of
determination, the product of (i) the Subservicing Fee Rate divided by 12 and
(ii) the Principal Balance of such Mortgage Loans as of such date.

     SUBSERVICING FEE RATE: For any date of determination, ____% per annum.

     SUBSTITUTION ADJUSTMENT AMOUNT: With respect to any Eligible Substitute
Mortgage Loan, the amount as defined in Section 2.03 of the Servicing Agreement.

     TELERATE SCREEN PAGE 3750: The display designated as page 3750 on the
Telerate Service (or such other page as may replace page 3750 on that service
for the purpose of displaying London interbank offered rates of major banks). 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 One-Month LIBOR or comparable rates as may be selected by
the Issuer after consultation with the Indenture Trustee), the rate will be the
Reference Bank Rate.

     TREASURY REGULATIONS: Regulations, including proposed or temporary
Regulations, promulgated under the Code. References herein to specific
provisions of proposed or temporary regulations shall include analogous
provisions of final Treasury Regulations or other successor Treasury
Regulations.

     TRUST AGREEMENT: The Trust Agreement dated as of ______ __, 200_ between
the Owner Trustee and the Depositor.

     TRUST ESTATE: The meaning specified in the Granting Clause of the
Indenture.

     TRUST INDENTURE ACT OR TIA: The Trust Indenture Act of 1939, as amended
from time to time, as in effect on any relevant date.

     UCC: The Uniform Commercial Code, as amended from time to time, as in
effect in any specified jurisdiction.

     WEIGHTED AVERAGE NET MORTGAGE RATE: With respect to the Mortgage Loans in
the aggregate, and any Due Date, the average of the Net Mortgage Rate for each
Mortgage Loan as of the last day of the related Due Period weighted on the basis
of the related Principal Balances outstanding as of the last day of the related
Due Period for each Mortgage Loan as determined by the Master Servicer in
accordance with the Master Servicer's normal servicing procedures.


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