Exhibit 4.1


                               SERIES SUPPLEMENT

                      CORPORATE BACKED TRUST CERTIFICATES

            AT&T WIRELESS SERVICES NOTE-BACKED SERIES 2002-7 TRUST

                                    between

                            LEHMAN ABS CORPORATION,

                                 as Depositor,

                                      and

                     U.S. BANK TRUST NATIONAL ASSOCIATION,

                                  as Trustee,

                            Dated as of May 1, 2002


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                               Table of Contents
                                                                          Page

Section 1.   Incorporation of Standard Terms................................1

Section 2.   Definitions....................................................1

Section 3.   Designation of Trust and Certificates..........................7

Section 4.   Trust Certificates.............................................8

Section 5.   Distributions..................................................8

Section 6.   Trustee's Fees................................................11

Section 7.   Optional Exchange; Optional Call..............................11

Section 8.   Notices of Events of Default..................................13

Section 9.   Miscellaneous.................................................13

Section 10.  Governing Law.................................................15

Section 11.  Counterparts..................................................16

Section 12.  Termination of the Trust......................................16

Section 13.  Sale of Underlying Securities; Optional Exchange..............16

Section 14.  Amendments....................................................16

Section 15.  Voting of Underlying Securities, Modification of Indenture....17

Section 16.  Additional Depositor Representation...........................18


SCHEDULE I       SERIES 2002-7 UNDERLYING SECURITIES SCHEDULE
EXHIBIT A-1      FORM OF TRUST CERTIFICATE CLASS A-1
EXHIBIT A-2      FORM OF TRUST CERTIFICATE CLASS A-2
EXHIBIT B        FORM OF WARRANT AGENT AGREEMENT
EXHIBIT C        FORM OF INVESTMENT LETTER


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                               SERIES SUPPLEMENT

                      CORPORATE BACKED TRUST CERTIFICATES

            AT&T WIRELESS SERVICES NOTE-BACKED SERIES 2002-7 TRUST

         SERIES SUPPLEMENT, AT&T Wireless Services Note-Backed Series 2002-7,
dated as of May 1, 2002 (the "Series Supplement"), by and between LEHMAN ABS
CORPORATION, as Depositor (the "Depositor"), and U.S. BANK TRUST NATIONAL
ASSOCIATION, as Trustee (the "Trustee").

                             W I T N E S S E T H:

         WHEREAS, the Depositor desires to create the Trust designated herein
(the "Trust") by executing and delivering this Series Supplement, which shall
incorporate the terms of the Standard Terms for Trust Agreements, dated as of
January 16, 2001 (the "Standard Terms" and, together with this Series
Supplement, the "Trust Agreement"), by and between the Depositor and the
Trustee, as modified by this Series Supplement;

         WHEREAS, the Depositor desires to deposit into the Trust the
Underlying Securities set forth on Schedule I attached hereto (the "Underlying
Securities Schedule") the general terms of which are described in the
Prospectus Supplement under the heading "Description of the Deposited Assets -
Underlying Securities";

         WHEREAS, in connection with the creation of the Trust and the deposit
therein of the Underlying Securities, it is desired to provide for the
issuance of trust certificates evidencing undivided interests in the Trust and
call warrants related thereto; and

         WHEREAS, the Trustee has joined in the execution of the Standard
Terms and this Series Supplement to evidence the acceptance by the Trustee of
the Trust.

         NOW, THEREFORE, in consideration of the foregoing premises and the
mutual covenants expressed herein, it is hereby agreed by and between the
Depositor and the Trustee as follows:

     Section 1. Incorporation of Standard Terms. Except as otherwise provided
herein, all of the provisions of the Standard Terms are hereby incorporated
herein by reference in their entirety, and this Series Supplement and the
Standard Terms shall form a single agreement between the parties. In the event
of any inconsistency between the provisions of this Series Supplement and the
provisions of the Standard Terms, the provisions of this Series Supplement
will control with respect to the AT&T Wireless Services Note-Backed Series
2002-7 Certificates and the transactions described herein.

     Section 2. Definitions.

     (a) Except as otherwise specified herein or as the context may otherwise
require, the following terms shall have the respective meanings set forth
below for all purposes under this Series Supplement. (Section 2(b) below sets
forth terms listed in the Standard Terms which are


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not applicable to this Series.) Capitalized terms used but not defined herein
shall have the meanings assigned to them in the Standard Terms.

         "Available Funds" shall have the meaning specified in the Standard
Terms.

         "Business Day" shall mean any day other than (i) Saturday and Sunday
or (ii) a day on which banking institutions in New York City, New York are
authorized or obligated by law or executive order to be closed for business or
(iii) a day that is not a business day for the purposes of the Indenture.

         "Call Date" shall mean any Business Day (i) on or after May 1, 2007,
(ii) after the Underlying Securities Issuer announces that it will redeem (in
whole or in part) or otherwise make an unscheduled payment on the Underlying
Securities, (iii) after the Trustee notifies the Certificateholders of any
proposed sale of the Underlying Securities pursuant to the provisions of this
Series Supplement or (iv) on which a tender offer for some or all of the
Underlying Securities is consummated.

         "Call Notice" shall have the meaning specified in Section 1.1 of the
Warrant Agent Agreement.

         "Call Price" shall mean, for each related Call Date, (i) in the case
of the Class A-1 Certificates, 100% of the outstanding Certificate Principal
Balance of the Class A-1 Certificates being purchased pursuant to the exercise
of the Call Warrants, plus any accrued and unpaid interest on such amount to
but excluding the Call Date and (ii) in the case of the Class A-2
Certificates, the present value of all amounts that would otherwise have been
payable on the Class A-2 Certificates being purchased pursuant to the exercise
of the Call Warrants for the period from the related Call Date to the Final
Scheduled Distribution Date using a discount rate of 8.62% per annum, assuming
no delinquencies, deferrals, redemptions or prepayments on the Underlying
Securities shall occur after the related Call Date.

         "Call Warrants" shall have the meaning specified in Section 3 hereof.

         "Called Certificates" shall have the meaning specified in Section 1.1
(b) of the Warrant Agent Agreement.

         "Certificates" shall have the meaning specified in Section 3 hereof.

         "Class A-1 Allocation" shall mean the sum of the present values
(discounted at the rate of 8.00% per annum) of (i) any unpaid interest due or
to become due on the Class A-1 Certificates and (ii) the outstanding
Certificate Principal Balance of the Class A-1 Certificates (in each case
assuming that the Class A-1 Certificates were paid when due and were not
redeemed prior to their stated maturity).

         "Class A-1 Certificates" shall mean the Certificates, in the form
attached hereto as Exhibit A-1, to be issued by the Trust representing a
proportionate undivided beneficial ownership interest in certain distributions
to be made by the Trust and having the characteristics described herein and in
the Certificates.


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         "Class A-2 Allocation" shall mean the present value (discounted at
the rate of 8.00% per annum) of any unpaid amounts due or to become due on the
outstanding notional amount of the Class A-2 Certificates (assuming that the
Class A-2 Certificates were paid when due and were not redeemed prior to their
stated maturity).

         "Class A-2 Certificates" shall mean the Certificates, in the form
attached hereto as Exhibit A-2, to be issued by the Trust representing a
proportionate undivided beneficial ownership interest in certain distributions
to be made by the Trust and having the characteristics described herein and in
the Certificates.

         "Closing Date" shall mean May 1, 2002.

         "Collection Period" shall mean, (i) with respect to each September
Distribution Date, the period beginning on the day after the March
Distribution Date of such year and ending on such September Distribution Date,
inclusive and, (ii) with respect to each March Distribution Date, the period
beginning on the day after the September Distribution Date of the prior year
and ending on such March Distribution Date, inclusive; provided, however, that
clauses (i) and (ii) shall be subject to Section 9(f) hereof.

         "Corporate Trust Office" shall mean the office of U.S. Bank Trust
National Association located at 100 Wall Street, New York, New York 10005.

         "Currency" shall mean United States Dollars.

         "Depository" shall mean The Depository Trust Company, its nominees
and their respective successors.

         "Distribution Date" shall mean March 1st and September 1st of each
year (or if such date is not a Business Day, the next succeeding Business
Day), commencing on September 1, 2002, and ending on the earlier of the Final
Scheduled Distribution Date and any date on which all Underlying Securities
are redeemed pursuant to the Indenture or prepaid or liquidated in whole for
any reason other than at their maturity.

         "Event of Default" shall mean (i) a default in the payment of any
interest on any Underlying Security after the same becomes due and payable
(subject to any applicable grace period), (ii) a default in the payment of the
principal of or any installment of principal of any Underlying Security when
the same becomes due and payable, and (iii) any other event specified as an
"Event of Default" in the Indenture.

         "Exchange Act" shall mean the Securities and Exchange Act of 1934, as
amended, and the rules and regulations promulgated thereunder.

         "Final Scheduled Distribution Date" shall mean March 1, 2031, or, if
such day is not a Business Day, the next succeeding Business Day.

         "Indenture" shall mean the indenture, dated as of March 6, 2001,
between the Underlying Securities Issuer and the Underlying Securities
Trustee, pursuant to which the Underlying Securities were issued.


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         "Interest Accrual Period" shall mean for any Distribution Date, the
period from and including the preceding Distribution Date (or in the case of
the first Interest Accrual Period, from and including May 1, 2002) to but
excluding the current Distribution Date.

         "Liquidation Price" shall mean the price at which the Trustee sells
the Underlying Securities.

         "Maturity Date" shall have the meaning specified in Schedule I
hereto.

         "Moody's" shall mean Moody's Investors Service, Inc.

         "Optional Call" shall mean the call of the Certificates by the
Warrant Holder, in whole or in part, resulting from the exercise of Call
Warrants by the Warrant Holder, pursuant to Section 7(d) hereof.

         "Optional Exchange" shall mean the exchange of the Certificates by
the Trust for the Underlying Securities pursuant to Section 7(a) hereof.

         "Optional Exchange Date" shall mean any date on which Underlying
Securities subject to Optional Exchange are distributed to a
Certificateholder.

         "Ordinary Expenses" shall mean the Trustee's ordinary expenses and
overhead in connection with its services as Trustee, including the items
referred to in the definition of Ordinary Expenses in the Standard Terms.

         "Prepaid Ordinary Expenses" shall be zero for this Series.

         "Prospectus Supplement" shall mean the Prospectus Supplement, dated
April 19, 2002, relating to the Certificates.

         "QIB" shall have the meaning set forth in Section 3(e) hereof.

         "Rating Agency" shall mean Moody's and S&P.

         "Record Date" shall mean, with respect to each Distribution Date, the
day immediately preceding the related Distribution Date.

         "Required Percentage-Amendment" shall be 66-2/3% of the aggregate
Voting Rights, unless the subject amendment requires the vote of holders of
only one class of Certificates pursuant to the Standard Terms, in which case
66-2/3% of the Voting Rights of such Class.

         "Required Percentage-Direction of Trustee" shall be 66-2/3% of the
aggregate Voting Rights.

         "Required Percentage-Remedies" shall be 66-2/3% of the aggregate
Voting Rights.

         "Required Percentage-Removal" shall be 66-2/3% of the aggregate
Voting Rights.


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         "Required Rating" shall mean, in the case of Moody's, the rating
assigned to the Underlying Securities by Moody's as of the Closing Date, and,
in the case of S&P, the rating assigned to the Underlying Securities by S&P as
of the Closing Date.

         "Resale Restriction Termination Date" shall have the meaning set
forth in Section 3(e) hereof.

         "Rule 144A" shall have the meaning set forth in Section 3(e) hereof.

         "S&P" shall mean Standard & Poor's Ratings Services, a division of
The McGraw-Hill Companies, Inc.

         "Securities Act" shall mean the United States Securities Act of 1933,
as amended.

         "Series" shall mean AT&T Wireless Services Note-Backed Series 2002-7.

         "Special Distribution Date" shall have the meaning specified in
Section 5 hereof.

         "Trustee Fee" shall mean the amount paid to the Trustee by the
Depositor on the Closing Date.

         "Trust Property" shall mean the Underlying Securities described on
Schedule I hereto, the Certificate Account and any additional Underlying
Securities sold to the Trust pursuant to Section 3(d) hereof.

         "Underlying Securities" shall mean $30,000,000 aggregate principal
amount of 8.75% Senior Notes due March 1, 2031, issued by the Underlying
Securities Issuer, as set forth in Schedule I attached hereto (subject to
Section 3(d) hereof).

         "Underlying Securities Issuer" shall mean AT&T Wireless Services,
Inc..

         "Underlying Securities Trustee" shall mean The Bank of New York.

         "Underwriters" shall mean Lehman Brothers Inc. and Prudential
Securities Incorporated.

         "Voting Rights" shall be allocated between the holders of the Class
A-1 Certificates and the holders of the Class A-2 Certificates, pro rata, in
proportion to the ratio of the Class A-1 Allocation to the Class A-2
Allocation. The Class A-1 Voting Rights will be allocated among Class A-1
Certificateholders in proportion to the then unpaid Certificate Principal
Balances of their respective Certificates and the Class A-2 Voting Rights will
be allocated among all Class A-2 Certificateholders in proportion to the then
outstanding notional amounts of their respective Certificates.

         "Warrant Agent" shall mean initially, U.S. Bank Trust National
Association.


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         "Warrant Agent Agreement" shall mean that certain Warrant Agent
Agreement, dated as of the date hereof, between the Depositor and U.S. Bank
Trust National Association, as Warrant Agent and as Trustee, as the same may
be amended from time to time.

         "Warrant Holder" shall mean the holder of a Call Warrant.

     (b) The terms listed below are not applicable to this Series.

                "Accounting Date"

                "Administrative Fees"

                "Advance"

                "Allowable Expense Amounts"

                "Basic Documents"

                "Calculation Agent"

                "Call Premium Percentage"

                "Credit Support"

                "Credit Support Instrument"

                "Credit Support Provider"

                "Cut-off Date"

                "Eligible Expense"

                "Eligible Investment"

                "Exchange Rate Agent"

                "Fixed Pass-Through Rate"

                "Floating Pass-Through Rate"

                "Guaranteed Investment Contract"

                "Letter of Credit"

                "Limited Guarantor"

                "Limited Guaranty"

                "Minimum Wire Denomination"


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                "Pass-Through Rate"

                "Place of Distribution"

                "Purchase Price"

                "Required Premium"

                "Required Principal"

                "Requisite Reserve Amount"

                "Retained Interest"

                "Sale Procedures"

                "Sub-Administration Account"

                "Sub-Administration Agreement"

                "Sub-Administration Agent"

                "Surety Bond"

                "Swap Agreement"

                "Swap Counterparty"

                "Swap Distribution Amount"

                "Swap Guarantee"

                "Swap Guarantor"

                "Swap Receipt Amount"

                "Swap Termination Payment"

     Section 3. Designation of Trust and Certificates. The Trust created
hereby shall be known as the "Corporate Backed Trust Certificates, AT&T
Wireless Services Note-Backed Series 2002-7 Trust." The Certificates
evidencing certain undivided ownership interests therein shall be known as
"Corporate Backed Trust Certificates, AT&T Wireless Services Note-Backed
Series 2002-7." The Certificates shall consist of the Class A-1 Certificates
and the Class A-2 Certificates (together, the "Certificates"). The Trust is
also issuing call warrants with respect to the Certificates ("Call Warrants").

     (a) The Certificates shall be held through the Depository in book-entry
form and shall be substantially in the forms attached hereto as Exhibits A-1
and A-2. The Class A-1 Certificates shall be issued


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in denominations of $25. The Class A-2 Certificates shall be issued in
minimum notional denominations of $100,000 and integral multiples of $1 in
excess thereof; provided, however, that on any Call Date on which a Warrant
Holder shall concurrently exchange Called Certificates for a distribution of
Underlying Securities in accordance with the provisions of Section 7 hereof,
Called Certificates may be issued in other denominations. Except as provided
in the Standard Terms and in paragraph (d) in this Section, the Trust shall
not issue additional Certificates or additional Call Warrants or incur any
indebtedness.

     (b) The Class A-1 Certificates consist of 1,200,000 Certificates having
an initial aggregate certificate principal amount (the "Certificate Principal
Balance") of $30,000,000. The Class A-2 Certificates are interest-only
Certificates, and shall have an initial aggregate notional amount equal to the
initial Certificate Principal Balance of the Class A-1 Certificates.

     (c) The holders of the Class A-1 Certificates will be entitled to receive
on each Distribution Date the interest, if any, received on the Underlying
Securities, to the extent necessary to pay interest at a rate of 8.00% per
annum on the outstanding Certificate Principal Balance of the Class A-1
Certificates. The holders of the Class A-2 Certificates will be entitled to
receive on each Distribution Date the interest, if any, received on the
Underlying Securities, to the extent necessary to pay interest at a rate of
0.75% per annum on the outstanding notional amount of the Class A-2
Certificates. On September 1, 2002, the Trustee will pay to the Depositor the
amount of interest accrued and paid on the Underlying Securities from March 1,
2002, to but not including the Closing Date; provided, however, that in the
event an Optional Exchange Date shall occur prior to September 1, 2002, a pro
rata portion of such amount shall be paid to the Depositor on the Optional
Exchange Date in accordance with the provisions of Section 7(b)(ix) hereof. If
Available Funds are insufficient to pay such amount, the Trustee will pay the
Depositor its pro rata share, based on the ratio the amount owed to the
Depositor bears to all amounts owed on the Certificates in respect of accrued
interest, of any proceeds from the recovery on the Underlying Securities.

     (d) The Depositor may sell to the Trustee additional Underlying
Securities on any date hereafter upon at least 3 Business Days' notice to the
Trustee (or such shorter period as shall be mutually satisfactory to the
Depositor and the Trustee) and upon (i) satisfaction of the Rating Agency
Condition and (ii) delivery of an Opinion of Counsel to the effect that the
sale of such additional Underlying Securities will not cause the Trust to be
taxed as an association or publicly traded partnership taxable as a
corporation for federal income tax purposes. Each condition to be satisfied
with respect to a sale of Underlying Securities on or prior to the Closing
Date shall be satisfied with respect to a sale of additional Underlying
Securities no later than the date of sale thereof, each representation and
warranty set forth in the Standard Terms to be made on the Closing Date shall
be made on such date of sale, and from and after such date of sale, all
Underlying Securities held by the Trustee shall be held on the same terms and
conditions. Upon such sale to the Trustee, the Trustee shall deposit such
additional Underlying Securities in the Certificate Account, and shall
authenticate and deliver to the Depositor, on its order, Class A-1
Certificates in a Certificate Principal Balance, and Class A-2 Certificates in
a notional amount, equal to the principal amount of such additional Underlying
Securities, and the Call Warrants related thereto. Any such additional Class
A-1 Certificates and Class A-2 Certificates authenticated and delivered shall
have the same terms and rank pari passu with the corresponding classes of
Certificates previously issued in accordance with this Series Supplement.


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     (e) No Class A-2 Certificate or Call Warrant may be offered, resold,
assigned or otherwise transferred (including by pledge or hypothecation) at
any time prior to (x) the date which is two years or such shorter period of
time as permitted by Rule 144(k) under the Securities Act after the later of
the original issue date of such Class A-2 Certificates or Call Warrants, as
applicable, and the last date on which the Depositor or any "affiliate" (as
defined in Rule 144 under the Securities Act) of the Depositor was the owner
of such Class A-2 Certificates or Call Warrants, as applicable, (or any
predecessor thereto) or (y) such later date, if any, as may be required by a
change in applicable securities laws (the "Resale Restriction Termination
Date") unless such offer, resale, assignment or transfer is (i) to the Trust,
(ii) pursuant to an effective registration statement under the Securities Act,
(iii) to a qualified institutional buyer (a "QIB"), as such term is defined in
Rule 144A promulgated under the Securities Act ("Rule 144A"), in accordance
with Rule 144A or (iv) pursuant to another available exemption from
registration provided under the Securities Act, and, in each of cases (i)
through (iv), in accordance with any applicable securities laws of any state
of the United States and other jurisdictions. Prior to any offer, resale,
assignment or transfer of any Class A-2 Certificates or Call Warrants in the
manner described in clause (iii) above, the prospective transferee and the
prospective transferor shall be required to deliver to the Trustee an executed
copy of an Investment Letter with respect to the Class A-2 Certificates or
Call Warrants, as applicable, to be transferred substantially in the form of
Exhibit C hereto. Prior to any offer, resale, assignment or transfer of any
Class A-2 Certificates or Call Warrants in the manner described in clause (iv)
above, the prospective transferee and the prospective transferor shall be
required to deliver to the Trustee documentation certifying that the offer,
resale, assignment or transfer complies with the provisions of said clause
(iv). In addition to the foregoing, each prospective transferee of any Class
A-2 Certificates or Call Warrants in the manner contemplated by clause (iii)
above shall acknowledge, represent and agree as follows:


      (1)      The transferee (x) is a QIB, (y) is aware that the sale to
               it is being made in reliance on Rule 144A and (z) is
               acquiring such Class A-2 Certificates or Call Warrants, as
               applicable, for its own account or for the account of a QIB.

      (2)      The transferee understands that the Class A-2 Certificates
               or Call Warrants, as applicable, are being offered in a
               transaction not involving any public offering in the United
               States within the meaning of the Securities Act, and that
               the Class A-2 Certificates or Call Warrants, as applicable,
               have not been and will not be registered under the
               Securities Act.

      (3)      The transferee agrees that (A) if in the future it decides
               to offer, resell, pledge or otherwise transfer the Class A-2
               Certificates or Call Warrants, as applicable, prior to the
               Resale Restriction Termination Date, such Class A-2
               Certificates or Call Warrants, as applicable, shall only be
               offered, resold, assigned or otherwise transferred (i) to
               the Trust, (ii) pursuant to an effective registration
               statement under the Securities Act, (iii) to a QIB, in
               accordance with Rule 144A or (iv) pursuant to another
               available exemption from registration provided under the
               Securities Act, and, in each of cases (i) through (iv), in
               accordance with any applicable securities laws of any state
               of the United States and other jurisdictions and (B) the
               transferee will, and each subsequent holder is required to,
               notify any


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               subsequent purchaser of such Class A-2 Certificates or Call
               Warrants, as applicable, from it of the resale restrictions
               referred to in clause (A) above.

     (f) The Class A-2 Certificates will, unless otherwise agreed by the
Depositor and the Trustee, bear a legend substantially to the following
effect:

               "THIS CLASS A-2 CERTIFICATE (OR ITS PREDECESSOR) HAS NOT
               BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
               AMENDED, AND MAY NOT BE TRANSFERRED, SOLD OR OTHERWISE
               DISPOSED OF EXCEPT WHILE A REGISTRATION UNDER SUCH ACT IS IN
               EFFECT OR PURSUANT TO AN EXEMPTION THEREFROM UNDER SUCH ACT.
               THE CLASS A-2 CERTIFICATE REPRESENTED HEREBY MAY BE
               TRANSFERRED ONLY IN ACCORDANCE WITH THE TERMS OF THE SERIES
               SUPPLEMENT.

               EACH PURCHASER OF THIS CLASS A-2 CERTIFICATE IS HEREBY
               NOTIFIED THAT THE SELLER OF THIS CLASS A-2 CERTIFICATE MAY
               BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5
               OF THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER."

     Section 4. Trust Certificates. The Trustee hereby acknowledges receipt,
on or prior to the Closing Date, of:

     (a) the Underlying Securities set forth on Schedule I hereto; and

     (b) all documents required to be delivered to the Trustee pursuant to
Section 2.01 of the Standard Terms.

     Section 5. Distributions.

     (a) Except as otherwise provided in Sections 3(c), 5(c), 5(d) and 5(i) on
each applicable Distribution Date (or such later date as specified in Section
9(f)), the Trustee shall apply Available Funds in the Certificate Account as
follows:

         (i) The Trustee will pay the interest portion of Available Funds:

               (1) first, to the Trustee, as reimbursement for any
          Extraordinary Trust Expenses incurred by the Trustee in accordance
          with Section 6(b) below and approved by 100% of the
          Certificateholders; and

               (2) second, to the holders of the Class A-1 Certificates and to
          the holders of the Class A-2 Certificates, interest accrued and
          unpaid on each such Class, pro rata in proportion to their
          entitlements thereto.


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         (ii) the Trustee will pay the principal portion of Available Funds:

               (1) first, to the Trustee, as reimbursement for any remaining
          Extraordinary Trust Expenses incurred by the Trustee in accordance
          with Section 6(b) below and approved by 100% of the
          Certificateholders; and

               (2) second, to the holders of the Class A-1 Certificates, the
          Certificate Principal Balance of the Class A-1 Certificates.

Any portion of the Available Funds (i) that does not constitute principal of,
or interest on, the Underlying Securities, (ii) that is not received in
connection with a redemption, prepayment or liquidation of the Underlying
Securities and (iii) for which allocation by the Trustee is not otherwise
contemplated by this Series Supplement, shall be remitted by the Trustee to
the Depositor.

     (b) [Reserved].

     (c) Notwithstanding the foregoing, if the Underlying Securities are
redeemed, prepaid or liquidated in whole or in part for any reason other than
due to the occurrence of an Underlying Securities Event of Default, the
cessation of the Underlying Securities Issuer to file periodic reports as
required by the Exchange Act or at their maturity, the Trustee shall apply
Available Funds in the manner described in Section 5(h) in the following order
of priority:

         (i)   first, to the Trustee, as reimbursement for any Extraordinary
               Trust Expenses incurred by the Trustee in accordance with
               Section 6(b) below and approved by 100% of the
               Certificateholders;

         (ii)  second, to the holders of the Class A-1 Certificates, an
               amount equal to the principal amount of Underlying Securities
               so redeemed, prepaid or liquidated plus accrued and unpaid
               interest on the amount of Class A-1 Certificates so redeemed;

         (iii) third, to the holders of the Class A-2 Certificates, the
               present value of all amounts that would otherwise have been
               payable on the Class A-2 Certificates for the period from the
               date of such redemption or prepayment to the Final Scheduled
               Distribution Date using a discount rate of 8.00% per annum,
               assuming no delinquencies, deferrals, redemptions or
               prepayments on the Underlying Securities; and

         (iv)  fourth, any remainder to the holders of the Class A-1
               Certificates and the Class A-2 Certificates pro rata in
               proportion to the ratio of the Class A-1 Allocation to the
               Class A-2 Allocation.

     (d) Notwithstanding the foregoing, if the Underlying Securities are
redeemed, prepaid or liquidated in whole or in part due to the occurrence of
an Underlying Securities Event of Default, the Trustee shall apply Available
Funds to the holders of the Class A-1 Certificates and the holders of the
Class A-2 Certificates in accordance with the ratio of the Class A-1
Allocation to the Class A-2 Allocation.


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     (e) Unless otherwise instructed by holders of Certificates representing a
majority of the Voting Rights, thirty (30) days after giving notice pursuant
to Section 8 hereof, the Trustee shall sell the Underlying Securities pursuant
to Section 13 hereof and deposit the Liquidation Proceeds, if any, into the
Certificate Account for distribution not later than two (2) Business Days
after the receipt of immediately available funds in accordance with Section
5(d) hereof provided, however, that if any Warrant Holder designates any day
on or prior to the proposed sale date as a Call Date and Optional Exchange
Date pursuant to Section 7, the portion of Underlying Securities related to
such Optional Exchange shall not be sold but shall be distributed to the
Warrant Holder pursuant to Section 7 and the Warrant Agent Agreement.

     (f) If the Trustee receives non-cash property in respect of the
Underlying Securities as a result of a payment default on the Underlying
Securities (including from the sale thereof), the Trustee will promptly give
notice to the Depository, or for any Certificates which are not then held by
DTC or any other depository, directly to the registered holders of the
Certificates then outstanding and unpaid and to the Warrant Agent. Such notice
shall state that the Trustee shall and the Trustee shall, not later than 30
days after the receipt of such property, allocate and distribute such property
to the holders of Class A-1 Certificates and Class A-2 Certificates then
outstanding and unpaid (after deducting the costs incurred in connection
therewith) in accordance with Section 5(d) hereof. Property other than cash
will be liquidated by the Trustee, and the proceeds thereof distributed in
cash, only to the extent necessary to avoid distribution of fractional
securities to Certificateholders. In-kind distribution of such property to
Certificateholders, based on the market value of such property as of the date
of distribution to Certificateholders, will be deemed to reduce the
Certificate Principal Balance of the Class A-1 Certificates on a
dollar-for-dollar basis. The outstanding notional amount of the Class A-2
Certificates shall be reduced, pro rata among all Class A-2
Certificateholders, by an amount equal to the amount by which the Certificate
Principal Balance of the Class A-1 Certificates is reduced.

     (g) Subject to Section 9(f) hereof, to the extent Available Funds are
insufficient to make any scheduled interest or principal payments on any class
of Certificates on any Distribution Date, any shortfall will be carried over
and will be distributed on the next Distribution Date (or date referred to in
Section 5(h) hereof) on which sufficient funds are available to pay such
shortfall.

     (h) If a payment with respect to the Underlying Securities is made to the
Trustee in connection with redemption, prepayment or liquidation, in whole or
in part, of the Underlying Securities for any reason other than due to the
occurrence of an Event of Default, the cessation of the Underlying Securities
Issuer to file periodic reports as required by the Exchange Act or at their
maturity, the Trustee will distribute any such amounts received in accordance
with Section 5(c) on the next occurring Business Day (a "Special Distribution
Date") as if the funds had constituted Available Funds on the Distribution
Date immediately preceding such Special Distribution Date; provided, however,
that the Record Date for such Special Distribution Date shall be one Business
Day prior to the day on which the related payment was received with respect to
the Underlying Securities.

     (i) Notwithstanding Section 3.12 of the Standard Terms, if the Underlying
Securities Issuer ceases to file periodic reports as required under the
Exchange Act, the Depositor shall


                                      12


<PAGE>


within a reasonable time instruct the Trustee to (i) notify the Warrant
Agent that the Underlying Securities are proposed to be sold and that any Call
Warrants and related Optional Exchange rights must be exercised no later than
the date specified in the notice (which shall be not less than ten Business
Days after the date of such notice) and (ii) to the extent that the Warrant
Holders fail to exercise their Call Warrants and related Optional Exchange
rights on or prior to such date, to sell the Underlying Securities and
distribute the proceeds of such sale to the Certificateholders in accordance
with the following order of priority: first, to the Trustee, as reimbursement
for any Extraordinary Trust Expenses incurred by the Trustee in accordance
with Section 6(b) below and approved by 100% of the Certificateholders; and
second, any remainder to the holders of the Class A-1 Certificates and the
Class A-2 Certificates pro rata in proportion to the ratio of the Class A-1
Allocation to the Class A-2 Allocation; provided, however, the Depositor shall
not instruct the Trustee to sell the Underlying Securities (or provide a
notice of such instruction to the Warrant Agent) pursuant to this clause
unless the Underlying Securities Issuer has either (x) stated in writing that
it intends permanently to cease filing reports required under the Exchange Act
or (y) failed to file any required reports for one full calendar year.

     (j) On any date on which Underlying Securities are redeemed, prepaid or
liquidated for any reason, the aggregate outstanding notional amount of the
Class A-2 Certificates shall be reduced by an amount equal to the principal
amount of the Underlying Securities so redeemed, prepaid or liquidated, the
reduction to be allocated pro rata among all Class A-2 Certificates.

     Section 6. Trustee's Fees.

     (a) As compensation for its services hereunder, the Trustee shall be
entitled to the Trustee Fee. The Trustee Fee shall be paid by the Depositor
and not from Trust Property. The Trustee shall bear all Ordinary Expenses.
Failure by the Depositor to pay such amount shall not entitle the Trustee to
any payment or reimbursement from the Trust, nor shall such failure release
the Trustee from the duties it is required to perform under the Trust
Agreement.

     (b) Extraordinary Expenses shall not be paid out of the Trust Property
unless all the holders of the Class A-1 Certificates and Class A-2
Certificates then outstanding have directed the Trustee to incur such
Extraordinary Expenses. The Trustee may incur other Extraordinary Expenses if
any lesser percentage of the Certificateholders requesting such action
pursuant hereto reimburse the Trustee for the cost thereof from their own
funds in advance. If Extraordinary Expenses are not approved unanimously as
set forth in the first sentence of this Section 6(b), such Extraordinary
Expenses shall not be an obligation of the Trust, and the Trustee shall not
file any claim against the Trust therefor notwithstanding failure of
Certificateholders to reimburse the Trustee.

     Section 7. Optional Call; Optional Exchange.

     (a) On (A) any Distribution Date, (B) any date on which a tender offer
for some or all of the Underlying Securities is consummated or (C) any date on
which the Underlying Securities are to be redeemed by the Underlying
Securities Issuer, any holder of Class A-1 Certificates and Class A-2
Certificates and the related Call Warrants, if Call Warrants related to such
Certificates are outstanding, may exchange such Certificates and, if
applicable, Call Warrants, for a distribution of Underlying Securities
representing the same percentage of the Underlying


                                      13


<PAGE>


Securities as such Certificates represent of all outstanding Certificates. On
any Call Date, any Warrant Holder may exchange Called Certificates for a
distribution of Underlying Securities representing the same percentage of
Underlying Securities as such Called Certificates represent of all outstanding
Certificates; provided that any such exchange shall either (x) result from an
exercise of all Call Warrants owned by such Warrant Holder or (y) occur on a
Call Date on which such Warrant Holder, alone or together with one or more
other Warrant Holders, shall exchange Called Certificates relating to
Underlying Securities having an aggregate principal amount equal to or in
excess of the product of (i) 0.1 and (ii) the aggregate principal amount of
the Underlying Securities deposited into the Trust on the Closing Date.

     (b) The following conditions shall apply to any Optional Exchange.

          (i) A notice specifying the number of Certificates being surrendered
     and the Optional Exchange Date shall be delivered to the Trustee no less
     than 5 days (or such shorter period acceptable to the Trustee) but not
     more than 30 days before the Optional Exchange Date; provided that for an
     Optional Exchange to occur on a Call Date, unless otherwise specified
     therein, the Call Notice shall be deemed to be the notice required
     hereunder.

          (ii) Certificates and, if applicable, the Call Warrants, shall be
     surrendered to the Trustee no later than 10:00 a.m. (New York City time)
     on the Optional Exchange Date; provided that for an Optional Exchange to
     occur on a Call Date, payment of the Call Price to the Warrant Agent
     pursuant to Section 1.1(a)(iii) of the Warrant Agent Agreement shall
     satisfy the requirement to surrender Certificates.

          (iii) Class A-1 Certificates and Class A-2 Certificates representing
     a like percentage of all Class A-1 Certificates and Class A-2
     Certificates shall be surrendered.

          (iv) The Trustee shall have received an opinion of counsel stating
     that the Optional Exchange would not cause the Trust to be treated as an
     association or publicly traded partnership taxable as a corporation for
     federal income tax purposes.

          (v) If the Certificateholder is the Depositor or any Affiliate of
     the Depositor, (1) the Trustee shall have received a certification from
     the Certificateholder that any Certificates being surrendered have been
     held for at least six months, and (2) the Certificates being surrendered
     may represent no more than 5% (or 25% in the case of Certificates
     acquired by the Underwriters but never distributed to investors) of the
     then outstanding Certificates.

          (vi) The Trustee shall not be obligated to determine whether an
     Optional Exchange complies with the applicable provisions for exemption
     under Rule 3a-7 of the Investment Company Act of 1940, as amended, or the
     rules or regulations promulgated thereunder.

          (vii) The provisions of Section 4.07 of the Standard Terms shall not
     apply to an Optional Exchange pursuant to this Section 7(b). This Section
     7(b) shall not provide any person with a lien against, an interest in or
     a right to specific performance with respect to the Underlying
     Securities; provided that satisfaction of the conditions set forth in
     this


                                      14


<PAGE>


     Section 7(b) shall entitle the Certificateholder or Warrant Holder,
     as applicable, to a distribution thereof.

          (viii) The aggregate principal amount of Certificates exchanged in
     connection with any Optional Exchange pursuant to this Section shall be
     in an amount that will entitle the Certificateholders thereof to
     Underlying Securities in an even multiple of the minimum denomination of
     such Underlying Securities.

          (ix) In the event such Optional Exchange shall occur prior to
     September 1, 2002, the Certificateholders shall have paid to the Trustee,
     for distribution to the Depositor, on the Optional Exchange Date an
     amount equal to the sum obtained by multiplying the amount of accrued
     interest on the Underlying Securities from March 1, 2002 through, but
     excluding, the Closing Date by a fraction, the numerator of which shall
     be the number of Certificates being exchanged on such Optional Exchange
     Date and the denominator of which shall be the total number of
     Certificates.

     (c) Concurrently with the execution of this Series Supplement, the
Trustee, on behalf of the Trust, shall execute the Warrant Agent Agreement and
the Call Warrants, dated as of the date hereof and substantially in the form
of Exhibit B hereto, initially evidencing all of the Call Warrants. The
Trustee shall perform the Trust's obligations under the Warrant Agent
Agreement and the Call Warrants in accordance with their respective terms.

     (d) Call Warrants may be exercised by the Warrant Holder in whole or in
part on any Call Date. In addition to the conditions set forth in Section 1.1
of the Warrant Agent Agreement, the following conditions shall apply to any
Optional Call.

          (i) An opinion of counsel to the Warrant Holder shall have been
     delivered to the Rating Agencies, in form satisfactory to the Rating
     Agencies, indicating that payment of the Call Price shall not be
     recoverable as a preferential transfer or fraudulent conveyance under the
     United States Bankruptcy Code. Such opinion may contain customary
     assumptions and qualifications.

          (ii) The Warrant Holder shall have provided a certificate of
     solvency to the Trustee.

          (iii) Upon receipt of a Call Notice, the Trustee shall provide a
     conditional call notice to the Depository not less than 3 Business Days
     prior to the Call Date.

          (iv) Delivery of a Call Notice does not give rise to an obligation
     on the part of the Warrant Holder to pay the Call Price. If, by 10:00
     a.m. (New York City time) on the Call Date, the Warrant Holder has not
     paid the Call Price, except in connection with a Call Notice relating to
     a tender offer for the Underlying Securities, then the Call Notice shall
     automatically expire and none of the Warrant Holder, the Warrant Agent or
     the Trustee shall have any obligation with respect to the Call Notice.
     The expiration of a Call Notice shall in no way affect the Warrant
     Holder's right to deliver a Call Notice at a later date. The Call Price
     for a call in connection with a tender offer shall be deducted from the
     proceeds of a tender offer by the Trust pursuant to Section 7(g)(iii).


                                      15


<PAGE>


          (v) Subject to receipt of the Call Price, the Trustee shall pay the
     Call Price to the Certificateholders on the Call Date. The Call Price for
     each Class of Certificates in respect of partial calls shall be allocated
     pro rata to the Certificateholders of such Class.

          (vi) The Trustee shall not consent to any amendment or modification
     of this Agreement (including the Standard Terms) which would adversely
     affect the Warrant Holders (including, without limitation, any alteration
     of the timing or amount of any payment of the Call Price or any other
     provision of this Agreement in a manner adverse to the Warrant Holders)
     without the prior written consent of 100% of the Warrant Holders. For
     purposes of this clause, no amendment, modification or supplement
     required to provide for any purchase by the Trustee of additional
     Underlying Securities and authentication and delivery by the Trustee of
     additional Certificates and Call Warrants pursuant to Section 3(d) shall
     be deemed to adversely affect the Warrant Holders.

          (vii) The Trustee shall not be obligated to determine whether an
     Optional Call complies with the applicable provisions for exemption under
     Rule 3a-7 of the Investment Company Act of 1940, as amended, or the rules
     or regulations promulgated thereunder.

     (e) This Section 7 shall not provide the Warrant Holder with a lien
against, an interest in or a right to specific performance with respect to the
Underlying Securities; provided that satisfaction of the conditions set forth
in Section 7(b) shall entitle the Certificateholders or the Warrant Holders,
as applicable, to a distribution of the Underlying Securities.

     (f) The rights of the Certificateholders under the Trust Agreement and
the Certificates are limited by the terms, provisions and conditions of the
Trust Agreement, the Warrant Agent Agreement and the Call Warrants with
respect to the exercise of the Call Warrants by the Warrant Holder. The
Certificateholders, by their acceptance of Certificates, covenant and agree to
tender any and all Called Certificates to the Trustee upon the Warrant
Holder's exercise of Call Warrants and payment of the Call Price for such
Certificates in accordance with the provisions hereof and of the Warrant Agent
Agreement.

     (g) (i) If the Trustee receives notice of a tender offer for some or
     all of the Underlying Securities, the Trustee shall within one Business
     Day notify the Warrant Agent and forward to the Warrant Agent copies of
     all materials received by the Trustee in connection therewith. If the
     Trustee receives a Call Notice from any Warrant Holder no later than five
     Business Days prior to the expiration of the tender offer acceptance
     period that such Warrant Holder desires to exercise all or a portion of
     its Call Warrants in connection with the consummation of any such tender
     offer, then the Trustee shall tender, in compliance with the tender offer
     requirements, an amount of Underlying Securities equal to the amount of
     Underlying Securities that would be distributable to the Warrant Holder
     with respect to an Optional Exchange of the Called Certificates called by
     such Warrant Holder; provided that any Optional Call or Optional Exchange
     undertaken in connection with any such tender offer shall be subject to
     the provisions of Section 7 hereof.


                                      16


<PAGE>


          (ii) The Call Date and Optional Exchange Date for any exercise of
     Call Warrants in connection with a tender offer shall be deemed to be the
     Business Day on which such Underlying Securities are accepted for payment
     and paid for.

          (iii) The Call Price shall be deducted from the tender offer
     proceeds and paid to Certificateholders in connection with Section
     7(d)(v), and the excess of the tender offer proceeds over the Call Price
     shall be paid to the exercising Warrant Holders pro rata in respect to
     their proportionate exercises of Call Warrants or, if the Call Price
     exceeds the tender offer proceeds, the amount of such excess shall be
     paid by the exercising Warrant Holders pro rata in respect to their
     proportionate exercises of Call Warrants.

          (iv) If fewer than all tendered Underlying Securities are accepted
     for payment and paid for, (A) the amount of Call Warrants exercised shall
     be reduced to an amount that corresponds to a number of Certificates that
     could be exchanged in an Optional Exchange for the Underlying Securities
     accepted for payment and paid for (without regard to any restrictions on
     the amount to be exchanged, so long as such restrictions would have been
     satisfied had all tendered Underlying Securities been accepted for
     payment and paid for); (B) each Warrant Holder's exercise shall be
     reduced by its share (proportionate to the amount specified in its
     exercise notice) of the amount of Underlying Securities not accepted for
     payment and paid for; (C) the Call Price shall be determined after giving
     effect to the reduction specified in clause (B); (D) the Call Warrants
     that relate to the reduction specified in clause (B) shall remain
     outstanding; and (E) the excess of the tender offer proceeds over the
     Call Price shall be allocated in proportion to the amount of Call
     Warrants deemed exercised as set forth in clause (A) above or, if the
     Call Price exceeds the tender offer proceeds the amount of such excess
     shall be paid by the exercising Warrant Holders pro rata in respect to
     their proportionate exercises of Call Warrants.

          (v) If the tender offer is terminated by the Underlying Securities
     Issuer or any other tender offeror without consummation thereof or if all
     tenders by the Trust of Underlying Securities are otherwise rejected,
     then (1) the Call Notices will be of no further force and effect, and (2)
     any Call Warrants relating to such Call Notices will not be exercised and
     will remain outstanding.

     Section 8. Notices of Events of Default.

              As promptly as practicable after, and in any event within 30
days after, the occurrence of any Event of Default actually known to the
Trustee, the Trustee shall give notice of such Event of Default to the
Depository, or, if any Certificates are not then held by DTC or any other
depository, directly to the registered holders of such Certificates, and to
the Warrant Agent. However, except in the case of an Event of Default relating
to the payment of principal of or interest on any of the Underlying
Securities, the Trustee will be protected in withholding such notice if in
good faith it determines that the withholding of such notice is in the
interest of the Certificateholders.

     Section 9. Miscellaneous.


                                      17


<PAGE>


     (a) The provisions of Section 4.04, Advances, of the Standard Terms shall
not apply to the AT&T Wireless Services Note-Backed Series 2002-7
Certificates.

     (b) The provisions of Section 4.07, Optional Exchange, of the Standard
Terms shall not apply to the AT&T Wireless Services Note-Backed Series 2002-7
Certificates.

     (c) The Trustee shall simultaneously forward reports to
Certificateholders pursuant to Section 4.03 of the Standard Terms and to the
New York Stock Exchange.

     (d) Except as expressly provided herein, the Certificateholders shall not
be entitled to terminate the Trust or cause the sale or other disposition of
the Underlying Securities.

     (e) The provisions of Section 3.07(d) of the Standard Terms shall not
apply to the AT&T Wireless Services Note-Backed Series 2002-7 Certificates.

     (f) If the Trustee has not received payment with respect to a Collection
Period on the Underlying Securities on or prior to the related Distribution
Date, such distribution will be made promptly upon receipt of such payment. No
additional amounts shall accrue on the Certificates or be owed to
Certificateholders as a result of such delay; provided, however, that any
additional interest owed and paid by the Underlying Securities Issuer as a
result of such delay shall be paid to the Class A-1 Certificateholders and
Class A-2 Certificateholders pro rata in proportion to their respective
entitlements to such delayed payments.

     (g) The outstanding principal balance of the Certificates shall not be
reduced by the amount of any Realized Losses (as defined in the Standard
Terms).

     (h) The Trust may not engage in any business or activities other than in
connection with, or relating to, the holding, protecting and preserving of the
Trust Property and the issuance of the Certificates and the Call Warrants, and
other than those required or authorized by the Trust Agreement or incidental
and necessary to accomplish such activities. The Trust may not issue or sell
any certificates or other obligations other than the Certificates and the Call
Warrants or otherwise incur, assume or guarantee any indebtedness for money
borrowed. Notwithstanding Section 3.05 of the Standard Terms, funds on deposit
in the Certificate Account shall not be invested. Section 2.01(f) of the
Standard Terms shall be superseded by this provision.

     (i) Notwithstanding anything in the Trust Agreement to the contrary, the
Trustee may be removed upon 60 days prior written notice delivered by the
holders of Class A-1 Certificates and Class A-2 Certificates representing the
Required Percentage-Removal.

     (j) In the event that the Internal Revenue Service challenges the
characterization of the Trust as a grantor trust, the Trustee shall then file
such forms as the Depositor may specify to establish the Trust's election
pursuant to Section 761 of the Code to exclude the Trust from the application
of Subchapter K of the Code and is hereby empowered to execute such forms on
behalf of the Certificateholders.

     (k) Notwithstanding anything in the Standard Terms to the contrary, the
Trustee, upon written direction by the Depositor, will execute the
Certificates.


                                      18


<PAGE>


     (l) In relation to Section 7.01(f) of the Standard Terms, any periodic
reports filed by the Trustee pursuant to the Exchange Act in accordance with
the customary practices of the Depositor, need not contain any independent
reports.

     (m) Notwithstanding anything in the Trust Agreement to the contrary, the
Trustee will have no recourse to the Underlying Securities.

     (n) [Reserved].

     (o) The Trust will not merge or consolidate with any other entity without
confirmation from each Rating Agency that such merger or consolidation will
not result in the qualification, reduction or withdrawal of its then-current
rating on the Certificates.

     (p) All directions, demands and notices hereunder or under the Standard
Terms shall be in writing and shall be delivered as set forth below (unless
written notice is otherwise provided to the Trustee).

          If to the Depositor, to:

                  Lehman ABS Corporation
                  745 Seventh Avenue
                  New York, New York  10019
                  Attention:  Structured Credit Trading
                  Telephone:  (212) 526-6575
                  Facsimile:   (201) 508-4621

          If to the Trustee or the Warrant Agent, to:

                  U.S. Bank Trust National Association
                  100 Wall Street
                  New York, New York  10005
                  Attention:  Corporate Trust
                  Telephone:  (212) 361-2500
                  Facsimile:  (212) 809-5459

          If to the Rating Agencies, to:

                  Moody's Investors Service, Inc.
                  99 Church Street 21W
                  New York, New York  10007
                  Attention:  CBO/CLO Monitoring Department
                  Telephone:  (212) 553-1494
                  Facsimile:  (212) 553-0355


                                      19


<PAGE>


         and to:

                  Standard & Poor's Ratings Services
                  55 Water Street
                  New York, New York  10041
                  Attention:  Structured Finance Surveillance Group
                  Telephone:  (212) 438-2482
                  Facsimile:  (212) 438-2664

          If to the New York Stock Exchange, to:

                  New York Stock Exchange, Inc.
                  20 Broad Street
                  New York, New York  10005
                  Attention:  Vincent Patten
                  Telephone:  (212) 656-5276
                  Facsimile:  (212) 656-5780

         Copies of all directions, demands and notices required to be given to
the Certificateholders hereunder or under the Standard Terms will also be
given to the Warrant Holders in writing as set forth in this Section 9, and
copies of all directions, demands and notices required to be given to the
Trustee hereunder or under the Standard Terms will also be given to the
Warrant Agent in writing as set forth in this Section 9(p).

     (q) Each of the representations, covenants and agreements made herein by
each of the Depositor and the Trustee are for the benefit of the
Certiticateholders and the Warrant Holders.

     (r) The provisions of Section 2.01(d)(iii) of the Standard Terms shall
not apply to the AT&T Wireless Services Note-Backed Series 2002-7 Certificates
and the following shall be deemed to be inserted in its place:

     "at the time of delivery of the Underlying Securities, the Depositor owns
such Underlying Securities, has the right to transfer its interest in such
Underlying Securities and such Underlying Securities are free and clear of any
lien, pledge, encumbrance, right, charge, claim or other security interest;
and"

     Section 10. Governing Law. THIS SERIES SUPPLEMENT AND THE TRANSACTIONS
DESCRIBED HEREIN SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE
LAWS OF THE STATE OF NEW YORK APPLICABLE TO CONTRACTS MADE AND PERFORMED
WITHIN THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO THE CHOICE OF LAWS
PROVISIONS THEREOF.

     Section 11. Counterparts. This Series Supplement may be executed in any
number of counterparts, each of which shall be deemed to be an original, and
all such counterparts shall constitute but one and the same instrument.

     Section 12. Termination of the Trust. The Trust shall terminate upon the
earliest to occur of (i) the payment in full at maturity or sale by the Trust
after a payment default or an


                                      20


<PAGE>


acceleration or other early payment of the Underlying Securities and the
distribution in full of all amounts due to the Class A-1 Certificateholders
and Class A-2 Certificateholders; (ii) the exercise of all outstanding Call
Warrants by the Warrant Holder; (iii) the Final Scheduled Distribution Date
and (iv) the expiration of 21 years from the death of the last 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.

     Section 13. Sale of Underlying Securities; Optional Exchange. In the
event of a sale of the Underlying Securities pursuant to Section 5(e) hereof
or pursuant to the instructions of the Warrant Agent under Section 1.2 of the
Warrant Agent Agreement, the Trustee shall solicit bids for the sale of the
Underlying Securities with settlement thereof on or before the third (3rd)
Business Day after such sale from three leading dealers in the relevant
market. Any of the following dealers (or their successors) shall be deemed to
qualify as leading dealers: (1) Credit Suisse First Boston Corporation, (2)
Goldman, Sachs & Co., (3) Merrill Lynch, Pierce, Fenner & Smith Incorporated,
(4) UBS Warburg LLC, (5) Salomon Smith Barney Inc., and (6) except in the case
of a sale related to the exercise of Call Warrants by the Depositor or any
Affiliate thereof, Lehman Brothers Inc. The Trustee shall not be responsible
for the failure to obtain a bid so long as it has made reasonable efforts to
obtain bids. If a bid for the sale of the Underlying Securities has been
accepted by the Trustee but the sale has failed to settle on the proposed
settlement date, the Trustee shall request new bids from such leading dealers
to the Class A-1 and Class A-2 Certificateholders. In the event of an Optional
Exchange, the Trustee shall only deliver the Underlying Securities to the
purchaser of such Underlying Securities or sell the Underlying Securities
pursuant to this Section 13, as the case may be, against payment in same day
funds deposited into the Certificate Account.

     Section 14. Amendments. Notwithstanding anything in the Trust Agreement
to the contrary, in addition to the other restrictions on modification and
amendment contained therein, the Trustee shall not enter into any amendment or
modification of the Trust Agreement which would adversely affect in any
material respect the interests of the holders of any class of Certificates
without the consent of the holders of 100% of such class of Certificates;
provided, however, that no such amendment or modification will be permitted
which would cause the Trust to be taxed as an association or publicly traded
partnership taxable as a corporation for federal income tax purposes. Unless
otherwise agreed, the Trustee shall provide five Business Days written notice
to each Rating Agency before entering into any amendment or modification of
the Trust Agreement pursuant to this Section 14.

     Section 15. Voting of Underlying Securities, Modification of Indenture.

     (a) The Trustee, as holder of the Underlying Securities, has the right to
vote and give consents and waivers in respect of the Underlying Securities as
permitted by the Depository and except as otherwise limited by the Trust
Agreement. In the event that the Trustee receives a request from the
Depository, the Underlying Securities Trustee or the Underlying Securities
Issuer for its consent to any amendment, modification or waiver of the
Underlying Securities, the Indenture or any other document thereunder or
relating thereto, or receives any other solicitation for any action with
respect to the Underlying Securities, the Trustee shall mail a notice of such
proposed amendment, modification, waiver or solicitation to each
Certificateholder of record as of such date. The Trustee shall request
instructions from the Certificateholders as to whether or


                                      21


<PAGE>


not to consent to or vote to accept such amendment, modification, waiver or
solicitation. The Trustee shall consent or vote, or refrain from consenting or
voting, in the same proportion (based on the relative outstanding Certificate
Principal Balances of the Class A-1 Certificates) as the Certificates of the
Trust were actually voted or not voted by the Certificateholders thereof as of
a date determined by the Trustee prior to the date on which such consent or
vote is required; provided, however, that, notwithstanding anything in the
Trust Agreement to the contrary, the Trustee shall at no time vote on or
consent to any matter (i) unless such vote or consent would not (based on an
opinion of counsel) cause the Trust to be taxed as an association or publicly
traded partnership taxable as a corporation under the Code, (ii) which would
alter the timing or amount of any payment on the Underlying Securities,
including, without limitation, any demand to accelerate the Underlying
Securities, except in the event of a default under the Underlying Securities
or an event which with the passage of time would become an event of default
under the Underlying Securities and with the unanimous consent of holders of
all outstanding Class A-1 Certificates, Class A-2 Certificates and all Warrant
Holders, or (iii) which would result in the exchange or substitution of any of
the outstanding Underlying Securities pursuant to a plan for the refunding or
refinancing of such Underlying Securities except in the event of a default
under the Indenture and only with the consent of Certificateholders
representing 100% of the Class A-1 Certificates, 100% of the Class A-2
Certificates and 100% of the Warrant Holders. The Trustee shall have no
liability for any failure to act resulting from Certificateholders' late
return of, or failure to return, directions requested by the Trustee from the
Certificateholders.

     (b) In the event that an offer is made by the Underlying Securities
Issuer to issue new obligations in exchange and substitution for any of the
Underlying Securities, pursuant to a plan for the refunding or refinancing of
the outstanding Underlying Securities or any other offer is made for the
Underlying Securities, the Trustee shall notify the Class A-1
Certificateholders, Class A-2 Certificateholders and the Warrant Holders of
such offer promptly. Subject to the rights of the Warrant Holders to exercise
Call Warrants in connection with a tender offer for the Underlying Securities,
the Trustee must reject any such offer unless the Trustee is directed by the
affirmative vote of the holders of 100% of the Class A-1 Certificates, Class
A-2 Certificates and Call Warrants to accept such offer and the Trustee has
received the tax opinion described above. If pursuant to the preceding
sentence, the Trustee accepts any such offer the Trustee shall promptly notify
the Rating Agencies.

     (c) If an event of default under the Indenture occurs and is continuing,
and if directed by a majority of the outstanding Class A-1 Certificateholders
and Class A-2 Certificateholders, the Trustee shall vote the Underlying
Securities in favor of directing, or take such other action as may be
appropriate to direct, the Underlying Securities Trustee to declare the unpaid
principal amount of the Underlying Securities and any accrued and unpaid
interest thereon to be due and payable.

     Section 16. Additional Depositor Representation. It is the express intent
of the parties hereto that the conveyance of the Underlying Securities by the
Depositor to the Trustee be, and be construed as, a sale of the Underlying
Securities by the Depositor and not a pledge of any Underlying Securities by
the Depositor to secure a debt or other obligation of the Depositor. In the
event that, notwithstanding the aforementioned intent of the parties, any
Underlying Securities are held to be property of the Depositor, then, it is
the express intent of the parties that such conveyance be deemed a pledge of
such Underlying Securities by the Depositor to the


                                      22


<PAGE>


Trustee to secure a debt or other obligation of the Depositor, pursuant to
Section 10.07 of the Standard Terms. In connection with any such grant of a
security interest in the Underlying Securities (including any such grant in
connection with any sale of additional Underlying Securities pursuant to
Section 3(d)), the Depositor hereby represents and warrants to Trustee as
follows:

     (i)    In the event the Underlying Securities are held to be property of
            the Depositor, then the Trust Agreement creates a valid and
            continuing security interest (as defined in the applicable Uniform
            Commercial Code) in the Underlying Securities in favor of the
            Trustee which security interest is prior to all other liens, and
            is enforceable as such as against creditors of, and purchasers
            from, the Depositor.

     (ii)   The Underlying Securities have been credited to a trust
            account (the "Securities Account") of the Trustee, or its
            authorized agent, in accordance with Section 2.01 of the Standard
            Terms. The Trustee, as securities intermediary for the Securities
            Account, has agreed to treat the Underlying Securities as
            "financial assets" within the meaning of the Uniform Commercial
            Code.

     (iii)  Immediately prior to the transfer of the Underlying
            Securities to the Trust, Depositor owned and had good and
            marketable title to the Underlying Securities free and clear of
            any lien, claim or encumbrance of any Person.

     (iv)   Depositor has received all consents and approvals required by
            the terms of the Underlying Securities to the transfer to the
            Trustee of its interest and rights in the Underlying Securities as
            contemplated by the Trust Agreement.

     (v)    Depositor has taken all steps necessary to cause the Trustee,
            as securities intermediary for the Securities Account, to identify
            on its records that the Trustee, as the trustee of the Trust, is
            the Person having a security entitlement against the securities
            intermediary in the Securities Account.

     (vi)   Depositor has not assigned, pledged, sold, granted a security
            interest in or otherwise conveyed any interest in the Underlying
            Securities (or, if any such interest has been assigned, pledged or
            otherwise encumbered, it has been released). Depositor has not
            authorized the filing of and is not aware of any financing
            statements against Depositor that includes a description of the
            Underlying Securities. Depositor is not aware of any judgment or
            tax lien filings against Depositor.

     (vii)  The Securities Account is not in the name of any Person other than
            the Trust. Depositor has not consented to the compliance by the
            Trustee, as securities intermediary, with entitlement orders of
            any Person other than the Trustee, as trustee of the Trust.


                                      23


<PAGE>


         IN WITNESS WHEREOF, the parties hereto have caused this Series
Supplement to be duly executed by their respective authorized officers as of
the date first written above.

                      LEHMAN ABS CORPORATION,
                          as Depositor


                      By:  /s/ Rene Canezin
                         -----------------------------------------
                           Name:   Rene Canezin
                           Title:  Senior Vice President


                      U.S. BANK TRUST NATIONAL ASSOCIATION,
                         not in its individual capacity
                         but solely as Trustee on behalf
                         of the Corporate Backed Trust Certificates,
                         AT&T Wireless Services Note-Backed Series 2002-7


                      By:  /s/ David J. Kolibachuk
                         -----------------------------------------
                           Name:  David J. Kolibachuk
                           Title: Vice President and Assistant Secretary


                                      24


<PAGE>


                                                                   SCHEDULE I


<TABLE>
<CAPTION>


               AT&T WIRELESS SERVICES NOTE-BACKED SERIES 2002-7

                        UNDERLYING SECURITIES SCHEDULE

<S>                                                          <C>
Underlying Securities:                                       8.75% Senior Notes due March 1, 2031.

Issuer:                                                      AT&T Wireless Services, Inc.

Principal Amount Deposited:                                  $30,000,000

Original Issue Date:                                         September 19, 2001 1

Principal Amount of Underlying Securities
Originally Issued:                                           $2,500,000,000

Maturity Date:                                               March 1, 2031

Interest Rate:                                               8.75% per annum

Interest Payment Dates:                                      March 1st and September 1st

Record Dates:                                                February 15th and August 15th


</TABLE>


------------------
1     Pursuant to a certain registration statement on Form S-3, the Underlying
      Securities Issuer offered to exchange up to $1,000,000,000 in aggregate
      principal amount of its 7.35% senior notes due 2006, up to
      $3,000,000,000 in aggregate principal amount of its 7.875% senior notes
      due 2011 and up to $2,500,000,000 in aggregate principal amount of its
      8.75% senior notes due 2031 for the same principal amount of its then
      outstanding 7.350% senior notes due 2006, 7.875% senior notes due 2011
      and 8.750% senior notes due 2031. This exchange offer expired on
      September 19, 2001.


                                     I-1


<PAGE>


                                  EXHIBIT A-1
                      FORM OF TRUST CERTIFICATE CLASS A-1

                             CLASS A-1 CERTIFICATE

NUMBER 1                                     1,200,000 $25 PAR CERTIFICATES
                                                        CUSIP NO. 21988G452

                      SEE REVERSE FOR CERTAIN DEFINITIONS

         UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE ISSUER
OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY
CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER
NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT
IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

         THIS CERTIFICATE REPRESENTS A PROPORTIONATE UNDIVIDED BENEFICIAL
OWNERSHIP INTEREST IN THE TRUST AND DOES NOT EVIDENCE AN OBLIGATION OF, OR AN
INTEREST IN, AND IS NOT GUARANTEED BY THE DEPOSITOR OR THE TRUSTEE OR ANY OF
THEIR RESPECTIVE AFFILIATES. NEITHER THIS CERTIFICATE OR THE TRUST ASSETS ARE
INSURED OR GUARANTEED BY ANY GOVERNMENTAL AGENCY OR ANY OTHER PERSON.


                                    A-1-1

<PAGE>


                            LEHMAN ABS CORPORATION

                               1,200,000 $25 PAR

                     CORPORATE BACKED TRUST CERTIFICATES,

               AT&T WIRELESS SERVICES NOTE-BACKED SERIES 2002-7

8.00% INTEREST RATE

     evidencing a proportionate undivided beneficial ownership interest in the
Trust, as defined below, the property of which consists principally of
$30,000,000 aggregate principal amount of 8.75% Senior Notes due March 1,
2031, issued by AT&T Wireless Services, Inc. (the "Underlying Securities
Issuer") and all payments received thereon (the "Trust Property"), deposited
in trust by Lehman ABS Corporation (the "Depositor").

               THIS CERTIFIES THAT CEDE & CO. is the registered owner of an
aggregate of $30,000,000 principal amount nonassessable, fully-paid,
proportionate undivided beneficial ownership interest in the Corporate Backed
Trust Certificates, AT&T Wireless Services Note-Backed Series 2002-7 Trust,
formed by the Depositor.


                                    A-1-2


<PAGE>


               The Trust was created pursuant to a Standard Terms for Trust
Agreements, dated as of January 16, 2001 (the "Standard Terms"), between the
Depositor and U.S. Bank Trust National Association, a national banking
association, not in its individual capacity but solely as Trustee (the
"Trustee"), as supplemented by the Series Supplement in respect of the AT&T
Wireless Services Note-Backed Series 2002-7, dated as of May 1, 2002 (the
"Series Supplement" and, together with the Standard Terms, the "Trust
Agreement"), between the Depositor and the Trustee. This Certificate does not
purport to summarize the Trust Agreement and reference is hereby made to the
Trust Agreement for information with respect to the interests, rights,
benefits, obligations, proceeds and duties evidenced hereby and the rights,
duties and obligations of the Trustee with respect hereto. A copy of the Trust
Agreement may be obtained from the Trustee by written request sent to the
Corporate Trust Office. Capitalized terms used but not defined herein have the
meanings assigned to them in the Trust Agreement.

               This Certificate is one of the duly authorized Certificates
designated as the "Corporate Backed Trust Certificates, AT&T Wireless Services
Note-Backed Series 2002-7, Class A-1" (herein called the "Certificates"). This
Certificate is issued under and is subject to the terms, provisions and
conditions of the Trust Agreement, to which Trust Agreement the Holder of this
Certificate by virtue of the acceptance hereof assents and by which such
Holder is bound. The Trust Property consists of: (i) Underlying Securities
described in the Trust Agreement, and (ii) all payments on or collections in
respect of the Underlying Securities accrued on or after May 1, 2002, together
with any and all income, proceeds and payments with respect thereto; provided,
however, that any income from the investment of Trust funds in certain
permitted investments ("Eligible Investments") does not constitute Trust
Property.

               Subject to the terms and conditions of the Trust Agreement
(including the availability of funds for distributions) and until the
obligation created by the Trust Agreement shall have terminated in accordance
therewith, distributions will be made on each Distribution Date, to the Person
in whose name this Certificate is registered on the applicable Record Date, in
an amount equal to such Certificateholder's proportionate undivided beneficial
ownership interest in the amount required to be distributed to the Holders of
the Certificates on such Distribution Date. The Record Date applicable to any
Distribution Date is the close of business on the day immediately preceding
such Distribution Date (whether or not a Business Day). If a payment with
respect to the Underlying Securities is made to the Trustee after the date on
which such payment was due, then the Trustee will distribute any such amounts
received on the next occurring Business Day.

               Each Certificateholder, by its acceptance of a Certificate,
covenants and agrees that such Certificateholder will not at any time
institute against the Trust, or join in any institution against the Trust of,
any bankruptcy proceedings under any United States Federal or state bankruptcy
or similar law in connection with any obligations relating to the Certificates
or the Trust Agreement.

               Distributions made on this Certificate will be made as provided
in the Trust Agreement by the Trustee by wire transfer in immediately
available funds, or check mailed to the Certificateholder of record in the
Certificate Register without the presentation or surrender of this Certificate
or the making of any notation hereon, except that with respect to Certificates
registered on the Record Date in the name of the nominee of the Clearing
Agency (initially, such


                                    A-1-3


<PAGE>


nominee shall be Cede & Co.), payments will be made by wire transfer in
immediately available funds to the account designated by such nominee. Except
as otherwise provided in the Trust Agreement and notwithstanding the above,
the final distribution on this Certificate will be made after due notice by
the Trustee of the pendency of such distribution and only upon presentation
and surrender of this Certificate at the Corporate Trust Office or such other
location as may be specified in such notice.

               Reference is hereby made to the further provisions of this
Certificate set forth on the reverse hereof, which further provisions shall
for all purposes have the same effect as if set forth at this place.

               Unless the certificate of authentication hereon has been
executed by or on behalf of the Trustee, by manual signature, this Certificate
shall not entitle the Holder hereof to any benefit under the Trust Agreement
or be valid for any purpose.

               THIS CERTIFICATE 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 HOLDER HEREOF SHALL BE
DETERMINED IN ACCORDANCE WITH SUCH LAWS.



                                    A-1-4
<PAGE>


               IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed as of the date set forth below.


                                  CORPORATE BACKED TRUST
                                  CERTIFICATES, AT&T WIRELESS SERVICES
                                  NOTE-BACKED SERIES 2002-7 TRUST


                                  By: U.S. BANK TRUST NATIONAL ASSOCIATION
                                  not in its individual capacity but solely as
                                   Trustee,


                                  By:----------------------------------------
                                     Authorized Signatory


Dated: May 1, 2002


                    TRUSTEE'S CERTIFICATE OF AUTHENTICATION

         This is one of the Corporate Backed Trust Certificates, AT&T Wireless
Services Note-Backed Series 2002-7, described in the Trust Agreement referred
to herein.

U.S. BANK TRUST NATIONAL ASSOCIATION
not in its individual capacity but solely as
Trustee,


By:------------------------
   Authorized Signatory



                                    A-1-5


<PAGE>


                           (REVERSE OF CERTIFICATE)

               The Certificates are limited in right of distribution to
certain payments and collections respecting the Underlying Securities, all as
more specifically set forth herein and in the Trust Agreement. The registered
Holder hereof, by its acceptance hereof, agrees that it will look solely to
the Trust Property (to the extent of its rights therein) for distributions
hereunder.

               The Trust Agreement permits, with certain exceptions therein
provided, the amendment thereof and the modification of the rights and
obligations of the Depositor and the Trustee and the rights of the
Certificateholders under the Trust Agreement at any time by the Depositor and
the Trustee with the consent of the Holders of Class A-1 Certificates in the
manner set forth in the Series Supplement and the Standard Terms. Any such
consent by the Holder of this Certificate (or any predecessor Certificate)
shall be conclusive and binding on such Holder and upon all future Holders of
this Certificate and of any Certificate issued upon the transfer hereof or in
exchange hereof or in lieu hereof whether or not notation of such consent in
made upon this Certificate. The Trust Agreement also permits the amendment
thereof, in certain limited circumstances, without the consent of the Holders
of any of the Certificates.

               The Certificates are issuable in fully registered form only in
denominations of $25

               As provided in the Trust Agreement and subject to certain
limitations therein set forth, the transfer of this Certificate is
registerable in the Certificate Register upon surrender of this Certificate
for registration of transfer at the offices or agencies of the Certificate
Registrar maintained by the Trustee in the Borough of Manhattan, the City of
New York, duly endorsed by or accompanied by an assignment in the form below
and by such other documents as required by the Trust Agreement, and thereupon
one or more new Certificates of the same class in authorized denominations
evidencing the same principal amount will be issued to the designated
transferee or transferees. The initial Certificate Registrar appointed under
the Trust Agreement is U.S. Bank Trust National Association.

               No service charge will be made for any registration of transfer
or exchange, but the Trustee may require exchange of a sum sufficient to cover
any tax or other governmental charge that may be imposed in connection with
any transfer or exchange of Certificates.

               The Depositor and the Trustee and any agent of the Depositor or
the Trustee may treat the Person in whose name this Certificate is registered
as the owner hereof for all purposes, and neither the Depositor, the Trustee,
nor any such agent shall be affected by any notice to the contrary.

               It is the intention of the parties to the Trust Agreement that
the Trust created thereunder shall constitute a fixed investment trust for
federal income tax purposes under Treasury Regulation Section 301.7701-4, and
the Certificateholder agrees to treat the Trust, any distributions therefrom
and its beneficial interest in the Certificates consistently with such
characterization.


                                    A-1-6
<PAGE>


               The Trust and the obligations of the Depositor and the Trustee
created by the Trust Agreement with respect to the Certificates shall
terminate upon the earliest to occur of (i) the payment in full at maturity or
sale by the Trust after a payment default or an acceleration or other early
payment of the Underlying Securities and the distribution in full of all
amounts due to the Class A-1 Certificateholders and Class A-2
Certificateholders; (ii) the Final Scheduled Distribution Date and (iii) the
expiration of 21 years from the death of the last 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.

               An employee benefit plan subject to the Employee Retirement
Income Security Act of 1974, as amended ("ERISA"), a plan described in Section
4975(e) of the Code, an entity whose underlying assets include plan assets by
reason of any such plan's investment in the entity, including an individual
retirement account or Keogh plan (any such, a "Plan") may purchase and hold
Certificates if the Plan can represent and warrant that its purchase and
holding of the Certificates would not be prohibited under ERISA or the Code.


                                    A-1-7
<PAGE>


                                  ASSIGNMENT

               FOR VALUE RECEIVED the undersigned hereby sells, assigns and
transfers unto

PLEASE INSERT SOCIAL SECURITY
OR OTHER IDENTIFYING NUMBER
OF ASSIGNEE


(Please print or type name and address, including postal zip code, of
assignee) the within Certificate, and all rights thereunder, hereby
irrevocably constituting and appointing ______________________ Attorney to
transfer said Certificate on the books of the Certificate Register, with full
power of substitution in the premises.

Dated:


                                                           *

                                                 Signature Guaranteed:

                                                           *


*NOTICE: The signature to this assignment must correspond with the name as it
appears upon the face of the within Certificate in every particular, without
alteration, enlargement or any change whatever. Signatures must be guaranteed
by an "eligible guarantor institution" meeting the requirements of the
Certificate Registrar, which requirements include membership or participation
in the Security Transfer Agent Medallion Program ("STAMP") or such other
"signature guarantee program" as may be determined by the Certificate
Registrar in addition to, or in substitution for, STAMP, all in accordance
with the Securities Exchange Act of 1934, as amended.


                                    A-1-8
<PAGE>


                                  EXHIBIT A-2
                      FORM OF TRUST CERTIFICATE CLASS A-2

                             CLASS A-2 CERTIFICATE

NUMBER 1                                                 CUSIP NO. 21988GBR6

                      SEE REVERSE FOR CERTAIN DEFINITIONS

         THIS CLASS A-2 CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND MAY NOT BE
TRANSFERRED, SOLD OR OTHERWISE DISPOSED OF EXCEPT WHILE A REGISTRATION UNDER
SUCH ACT IS IN EFFECT OR PURSUANT TO AN EXEMPTION THEREFROM UNDER SUCH ACT.
THE CLASS A-2 CERTIFICATE REPRESENTED HEREBY MAY BE TRANSFERRED ONLY IN
ACCORDANCE WITH THE TERMS OF THE SERIES SUPPLEMENT.

         EACH PURCHASER OF THIS CLASS A-2 CERTIFICATE IS HEREBY NOTIFIED THAT
THE SELLER OF THIS CLASS A-2 CERTIFICATE MAY BE RELYING ON THE EXEMPTION FROM
THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY RULE 144A
THEREUNDER.

         THE NOTIONAL PRINCIPAL AMOUNT OF THIS CLASS A-2 CERTIFICATE IS AS SET
FORTH HEREIN. ACCORDINGLY, THE OUTSTANDING NOTIONAL PRINCIPAL AMOUNT OF THIS
CLASS A-2 CERTIFICATE AT ANY TIME MAY BE LESS THAN THE AMOUNT SHOWN ON THE
FACE HEREOF.

         UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE ISSUER
OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY
CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER
NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT
IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

         THIS CERTIFICATE REPRESENTS A PROPORTIONATE UNDIVIDED BENEFICIAL
OWNERSHIP INTEREST IN THE TRUST AND DOES NOT EVIDENCE AN OBLIGATION OF, OR AN
INTEREST IN, AND IS NOT GUARANTEED BY THE DEPOSITOR OR THE TRUSTEE OR ANY OF
THEIR RESPECTIVE AFFILIATES. NEITHER THIS CERTIFICATE OR THE TRUST ASSETS ARE
INSURED OR GUARANTEED BY ANY GOVERNMENTAL AGENCY OR ANY OTHER PERSON.


                                    A-2-1
<PAGE>


                            LEHMAN ABS CORPORATION


                     CORPORATE BACKED TRUST CERTIFICATES,

               AT&T WIRELESS SERVICES NOTE-BACKED SERIES 2002-7

                     $30,000,000 NOTIONAL PRINCIPAL AMOUNT

0.75% INTEREST RATE

     evidencing a proportionate undivided beneficial ownership interest in the
Trust, as defined below, the property of which consists principally of
$30,000,000 aggregate principal amount of 8.75% Senior Notes due March 1,
2031, issued by AT&T Wireless Services, Inc. and all payments received thereon
(the "Trust Property"), deposited in trust by Lehman ABS Corporation (the
"Depositor").

         THIS CERTIFIES THAT CEDE & CO. is the registered owner of an
aggregate amount of $30,000,000 notional principal amount nonassessable,
fully-paid, proportionate undivided beneficial ownership interest in the
Corporate Backed Trust Certificates, AT&T Wireless Services Note-Backed Series
2002-7 Trust, formed by the Depositor.

         The Trust was created pursuant to a Standard Terms for Trust
Agreements, dated as of January 16, 2001 (the "Standard Terms"), between the
Depositor and U.S. Bank Trust National Association, a national banking
association, not in its individual capacity but solely as Trustee (the
"Trustee"), as supplemented by the Series Supplement, AT&T Wireless Services
Note-Backed Series 2002-7, dated as of May 1, 2002 (the "Series Supplement"
and, together with the Standard Terms, the "Trust Agreement"), between the
Depositor and the Trustee. This Certificate does not purport to summarize the
Trust Agreement and reference is hereby made to the Trust Agreement for
information with respect to the interests, rights, benefits, obligations,
proceeds and duties evidenced hereby and the rights, duties and obligations of
the Trustee with respect hereto. A copy of the Trust Agreement may be obtained
from the Trustee by written request sent to the Corporate Trust Office.
Capitalized terms used but not defined herein have the meanings assigned to
them in the Trust Agreement.

         This Certificate is one of the duly authorized Certificates
designated as the "Corporate Backed Trust Certificates, AT&T Wireless Services
Note-Backed Series 2002-7, Class A-2" (herein called the "Certificates"). This
Certificate is issued under and is subject to the terms, provisions and
conditions of the Trust Agreement, to which Trust Agreement the Holder of this
Certificate by virtue of the acceptance hereof assents and by which such
Holder is bound. The Trust Property consists of: (i) Underlying Securities
described in the Trust Agreement, and (ii) all payments on or collections in
respect of the Underlying Securities accrued on or after May 1, 2002, together
with any and all income, proceeds and payments with respect thereto; provided,
however, that any income from the investment of Trust funds in certain
permitted investments ("Eligible Investments") does not constitute Trust
Property.

         Subject to the terms and conditions of the Trust Agreement (including
the availability of funds for distributions) and until the obligation created
by the Trust Agreement


                                    A-2-2
<PAGE>


shall have terminated in accordance therewith, distributions of interest will
be made on this Certificate on each Distribution Date.

         Subject to the terms and conditions of the Trust Agreement (including
the availability of funds for distributions) and until the obligation created
by the Trust Agreement shall have terminated in accordance therewith,
distributions will be made on each Distribution Date, to the Person in whose
name this Certificate is registered on the applicable Record Date, in an
amount equal to such Certificateholder's proportionate undivided beneficial
ownership interest in the amount required to be distributed to the Holders of
the Certificates on such Distribution Date. The Record Date applicable to any
Distribution Date is the close of business on the day immediately preceding
such Distribution Date (whether or not a Business Day). If a payment with
respect to the Underlying Securities is made to the Trustee after the date on
which such payment was due, then the Trustee will distribute any such amounts
received on the next occurring Business Day.

         Each Certificateholder, by its acceptance of a Certificate, covenants
and agrees that such Certificateholder will not at any time institute against
the Trust, or join in any institution against the Trust of, any bankruptcy
proceedings under any United States Federal or state bankruptcy or similar law
in connection with any obligations relating to the Certificates or the Trust
Agreement.

         Distributions made on this Certificate will be made as provided in
the Trust Agreement by the Trustee by wire transfer in immediately available
funds, or check mailed to the Certificateholder of record in the Certificate
Register without the presentation or surrender of this Certificate or the
making of any notation hereon, except that with respect to Certificates
registered on the Record Date in the name of the nominee of the Clearing
Agency (initially, such nominee shall be Cede & Co.), payments will be made by
wire transfer in immediately available funds to the account designated by such
nominee. Except as otherwise provided in the Trust Agreement and
notwithstanding the above, the final distribution on this Certificate will be
made after due notice by the Trustee of the pendency of such distribution and
only upon presentation and surrender of this Certificate at the Corporate
Trust Office or such other location as may be specified in such notice.

         Reference is hereby made to the further provisions of this
Certificate set forth on the reverse hereof, which further provisions shall
for all purposes have the same effect as if set forth at this place.

         Unless the certificate of authentication hereon has been executed by
or on behalf of the Trustee, by manual signature, this Certificate shall not
entitle the Holder hereof to any benefit under the Trust Agreement or be valid
for any purpose.

         THIS CERTIFICATE 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 HOLDER HEREOF SHALL BE
DETERMINED IN ACCORDANCE WITH SUCH LAWS.


                                    A-2-3
<PAGE>


         IN WITNESS WHEREOF, the Trustee has caused this Certificate to be
duly executed as of the date set forth below.


                   CORPORATE BACKED TRUST CERTIFICATES,
                   AT&T WIRELESS SERVICES NOTE-BACKED SERIES 2002-7 TRUST


                   By: U.S. BANK TRUST NATIONAL ASSOCIATION
                   not in its individual capacity but solely as
                   Trustee,


                   By:
                      ----------------------------------
                      Authorized Signatory


Dated: May 1, 2002


                    TRUSTEE'S CERTIFICATE OF AUTHENTICATION

         This is one of the Corporate Backed Trust Certificates, AT&T Wireless
Services Note-Backed Series 2002-7, described in the Trust Agreement referred
to herein.

U.S. BANK TRUST NATIONAL ASSOCIATION
not in its individual capacity but solely as
Trustee,


By:
   ------------------------
   Authorized Signatory


                                    A-2-4


<PAGE>


                           (REVERSE OF CERTIFICATE)

         The Certificates are limited in right of distribution to certain
payments and collections respecting the Underlying Securities, all as more
specifically set forth herein and in the Trust Agreement. The registered
Holder hereof, by its acceptance hereof, agrees that it will look solely to
the Trust Property (to the extent of its rights therein) for distributions
hereunder.

         The Trust Agreement permits, with certain exceptions therein
provided, the amendment thereof and the modification of the rights and
obligations of the Depositor and the Trustee and the rights of the
Certificateholders under the Trust Agreement at any time by the Depositor and
the Trustee with the consent of the holders of Class A-2 Certificates in the
manner set forth in the Series Supplement and the Standard Terms. Any such
consent by the Holder of this Certificate (or any predecessor Certificate)
shall be conclusive and binding on such Holder and upon all future Holders of
this Certificate and of any Certificate issued upon the transfer hereof or in
exchange hereof or in lieu hereof whether or not notation of such consent is
made upon this Certificate. The Trust Agreement also permits the amendment
thereof, in certain limited circumstances, without the consent of the Holders
of any of the Certificates.

         The Certificates are issuable in fully registered form only in
denominations of $100,000 and in integral multiples of $1 in excess thereof.

         As provided in the Trust Agreement and subject to certain limitations
therein set forth, the transfer of this Certificate is registerable in the
Certificate Register upon surrender of this Certificate for registration of
transfer at the offices or agencies of the Certificate Registrar maintained by
the Trustee in the Borough of Manhattan, the City of New York, duly endorsed
by or accompanied by an assignment in the form below and by such other
documents as required by the Trust Agreement, and thereupon one or more new
Certificates of the same class in authorized denominations evidencing the same
notional principal amount will be issued to the designated transferee or
transferees. The initial Certificate Registrar appointed under the Trust
Agreement is U.S. Bank Trust National Association.

         No service charge will be made for any registration of transfer or
exchange, but the Trustee may require exchange of a sum sufficient to cover
any tax or other governmental charge that may be imposed in connection with
any transfer or exchange of Certificates.

         The Depositor and the Trustee and any agent of the Depositor or the
Trustee may treat the Person in whose name this Certificate is registered as
the owner hereof for all purposes, and neither the Depositor, the Trustee, nor
any such agent shall be affected by any notice to the contrary.

         It is the intention of the parties to the Trust Agreement that the
Trust created thereunder shall constitute a fixed investment trust for federal
income tax purposes under Treasury Regulation Section 301.7701-4, and the
Certificateholder agrees to treat the Trust, any distributions therefrom and
its beneficial interest in the Certificates consistently with such
characterization.

         The Trust and the obligations of the Depositor and the Trustee
created by the Trust Agreement with respect to the Certificates shall
terminate upon the earliest to occur of (i) the


                                    A-2-5
<PAGE>

payment in full at maturity or sale by the Trust after a payment default on or
an acceleration or other early payment of the Underlying Securities and the
distribution in full of all amounts due to the Class A-1 and Class A-2
Certificateholders; (ii) the Final Scheduled Distribution Date and (iii) the
expiration of 21 years from the death of the last 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.

         An employee benefit plan subject to the Employee Retirement Income
Security Act of 1974, as amended ("ERISA"), a plan described in Section
4975(e) of the Code, an entity whose underlying assets include plan assets by
reason of any such plan's investment in the entity, including an individual
retirement account or Keogh plan (any such, a "Plan") may purchase and hold
Certificates if the Plan can represent and warrant that its purchase and
holding of the Certificates would not be prohibited under ERISA or the Code.


                                    A-2-6
<PAGE>


                                  ASSIGNMENT

         FOR VALUE RECEIVED the undersigned hereby sells, assigns and
transfers unto

PLEASE INSERT SOCIAL SECURITY
OR OTHER IDENTIFYING NUMBER
OF ASSIGNEE


         (Please print or type name and address, including postal zip code, of
assignee) the within Certificate, and all rights thereunder, hereby
irrevocably constituting and appointing                 Attorney to transfer
                                        ----------- ---
said Certificate on the books of the Certificate Register, with full power of
substitution in the premises.

Dated:


                                                   *
                                               Signature Guaranteed:


                                                   *


*NOTICE: The signature to this assignment must correspond with the name as it
appears upon the face of the within Certificate in every particular, without
alteration, enlargement or any change whatever. Signatures must be guaranteed
by an "eligible guarantor institution" meeting the requirements of the
Certificate Registrar, which requirements include membership or participation
in the Security Transfer Agent Medallion Program ("STAMP") or such other
"signature guarantee program" as may be determined by the Certificate
Registrar in addition to, or in substitution for, STAMP, all in accordance
with the Securities Exchange Act of 1934, as amended.



                                      A-2-7
<PAGE>


                                   EXHIBIT B
                        FORM OF WARRANT AGENT AGREEMENT
                            WARRANT AGENT AGREEMENT

                      CORPORATE BACKED TRUST CERTIFICATES

                      AT&T WIRELESS SERVICES NOTE-BACKED
                              SERIES 2002-7 TRUST

         WARRANT AGENT AGREEMENT, dated as of May 1, 2002 (the "Warrant Agent
Agreement"), by and between LEHMAN ABS CORPORATION, as Depositor (the
"Depositor"), U.S. BANK TRUST NATIONAL ASSOCIATION, as Trustee (the "Trustee")
and U.S. BANK TRUST NATIONAL ASSOCIATION, as Warrant Agent (the "Warrant
Agent").

                             W I T N E S S E T H:

         WHEREAS, the Depositor created Corporate Backed Trust Certificates,
AT&T Wireless Services Note-Backed Series 2002-7 Trust (the "Trust"), a trust
created under the laws of the State of New York pursuant to a Standard Terms
for Trust Agreements, dated as of January 16, 2001 (the "Agreement"), between
the Depositor and U.S. Bank Trust National Association, a national banking
association, not in its individual capacity but solely as Trustee (the
"Trustee"), as supplemented by the Series Supplement, AT&T Wireless Services
Note-Backed Series 2002-7, dated as of May 1, 2002 (the "Series Supplement"
and, together with the Agreement, the "Trust Agreement"), between the
Depositor and the Trustee; and

         WHEREAS, in connection with the creation of the Trust and the deposit
therein of the Underlying Securities, it is desired to provide for the
issuance of trust certificates (the "Certificates") evidencing undivided
interests in the Trust and call warrants with respect to the Certificates
("Call Warrants").

         NOW, THEREFORE, in consideration of the foregoing premises and the
mutual covenants expressed herein, it is hereby agreed by and between the
Depositor, the Warrant Agent and the Trustee that except as otherwise
specified herein or as the context may otherwise require, capitalized terms
used herein but not defined herein shall have the respective meanings set
forth below in the Series Supplement, and as follows:

     Section 17.

EXERCISE OF CALL WARRANTS

     (a) Manner of Exercise. (a) Call Warrants may be exercised by any holder
thereof (each, a "Warrant Holder") in whole or in part on any Call Date. The
following conditions shall apply to any exercise of Call Warrants:

               (1) A notice (each, a "Call Notice") specifying the number of
          Call Warrants being exercised and the Call Date shall be delivered
          to the Warrant Agent and the Trustee at least 5 Business Days before
          such Call Date.


                                     B-1


<PAGE>


               (2) The Warrant Holder shall surrender the Call Warrants to the
          Warrant Agent at its office specified in Section 6.3 hereof no later
          than 10:00 a.m. (New York City time) on such Call Date.

               (3) The Warrant Holder shall have made payment to the Warrant
          Agent, by wire transfer or other immediately available funds
          acceptable to the Warrant Agent, in the amount of the Call Price, no
          later than 10:00 a.m. (New York City time) on the Call Date.

                    (i) The Warrant Holder shall exercise Call Warrants
               relating to Class A-1 Certificates and Call Warrants relating
               to Class A-2 Certificates which represent a like percentage of
               all Class A-1 Certificates and Class A-2 Certificates.

                    (ii) The Warrant Holder may not exercise the Call Warrants
               at any time when such Warrant Holder is insolvent, and such
               Warrant Holder shall be required to certify that it is solvent
               at the time of exercise, by completing the Form of Subscription
               attached to the Call Warrants and delivering such completed
               Form of Subscription to the Trustee on or prior to the Call
               Date and by delivering to the Trustee a form reasonably
               satisfactory to the Trustee of the opinion and the solvency
               certificate required pursuant to Section 7(d)(ii) of the Series
               Supplement.

                    (iii) The Warrant Holder shall have satisfied any other
               conditions to the exercise of Call Warrants set forth in
               Section 7(b) of the Series Supplement.

         (b) Upon exercise of Call Warrants, any Warrant Holder other than the
Depositor or any Affiliate of the Depositor shall be entitled to delivery by
the Trustee of the Called Certificates. The "Called Certificates" shall be, in
the case of the Class A-1 Certificates, Class A-1 Certificates having a
Certificate Principal Amount equal to $25 per Call Warrant, and in the case of
the Class A-2 Certificates, Class A-2 Certificates having a notional balance
equal to $100,000 per Call Warrant. Unless otherwise specified therein, such
Call Notice shall be deemed to be notice of an Optional Exchange pursuant to
Section 7(a) of the Series Supplement. Any Warrant Holder which is the
Depositor or any Affiliate of the Depositor shall receive the proceeds of the
sale of the Called Underlying Securities and shall not be entitled to receive
the related Called Certificates or Called Underlying Securities. "Called
Underlying Securities" are Underlying Securities which represent the same
percentage of the Underlying Securities as the Called Certificates represent
of the Class A-1 Certificates and the Class A-2 Certificates.

                    (ii) The Warrant Agent shall notify the Trustee
               immediately upon its receipt of a Call Notice and upon receipt
               of payment of the Call Price. The Warrant Agent shall transfer
               the amount of any paid Call Price to the Trustee in immediately
               available funds, for deposit in the Certificate Account and
               application pursuant to the Trust Agreement on the applicable
               Call Date (and, pending such transfer, shall hold such amount
               for the benefit of the Warrant Holder in a segregated trust
               account).


                                     B-2


<PAGE>


                    (iii) Delivery of a Call Notice does not give rise to an
               obligation on part of the Warrant Holder to pay the Call Price.
               If, by 10:00 a.m. (New York City time) on the Call Date, the
               Warrant Holder has not paid the Call Price, except in
               connection with a Call Notice relating to a tender offer for
               Underlying Securities, then the Call Notice shall automatically
               expire and none of the Warrant Holder, the Warrant Agent or the
               Trustee shall have any obligation with respect to the Call
               Notice. The expiration of a Call Notice shall in no way affect
               the Warrant Holder's right to deliver a Call Notice at a later
               date. The Call Price for a call in connection with a tender
               offer shall be deducted from the proceeds of a tender offer by
               the Trust pursuant to Section 7(g)(iii) of the Series
               Supplement.

         (b) Transfer of Certificates. As soon as practicable after each
surrender of Call Warrants in whole or in part on the Call Date and upon
satisfaction of all other requirements described in the Call Warrants and in
Section 1.1 hereof, the Warrant Agent shall instruct the Trustee as follows:

                    (i) if Call Warrants are being exercised by any Warrant
               Holder other than the Depositor or any Affiliate of the
               Depositor, to cause the Called Certificates to reflect the
               Warrant Holder's beneficial ownership of such Certificates and
               if such Call Notice is also deemed to be a notice of Optional
               Exchange, to cause a distribution of Underlying Securities to
               the Warrant Holder in accordance with Section 7(a) of the
               Series Supplement, provided, however, that if such a Call
               Notice and Optional Exchange is in connection with a tender
               offer, the Warrant Agent shall instruct the Trustee to
               distribute to the exercising Warrant Holder the excess of the
               tender offer proceeds over the Call Price pursuant to Section
               7(g)(iii) of the Series Supplement, or

                    (ii) if the Call Warrants are being exercised by the
               Depositor or any Affiliate of the Depositor, to cause the
               Called Underlying Securities to be sold pursuant to Section 13
               of the Series Supplement and to distribute the proceeds of such
               sale to the Warrant Holder.

         If such exercise is in part only, the Warrant Agent shall instruct
the Trustee to authenticate new Call Warrants of like tenor, representing the
outstanding Call Warrants of the Warrant Holder and the Warrant Agent shall
deliver such Call Warrants to the Warrant Holder.

         In each case, the Trustee shall act in accordance with such
instructions.

         (c) Cancellation and Destruction of Call Warrants. All Call Warrants
surrendered to the Warrant Agent for the purpose of exercise (in whole or in
part) pursuant to Section 1.1 and actually exercised, or for the purpose of
transfer or exchange pursuant to Article III, shall be cancelled by the
Warrant Agent, and no Call Warrant (other than that reflecting any such
transfer or exchange) shall be issued in lieu thereof. The Warrant Agent shall
destroy all cancelled Call Warrants.

         (d) No Rights as Holder of Certificates Conferred by Call Warrants.
Prior to the exercise thereof, Call Warrants shall not entitle the Warrant
Holder to any of the rights of a holder of the Certificates, including,
without limitation, the right to receive the payment of any


                                     B-3


<PAGE>

amount on or in respect of the Certificates or to enforce any of the covenants
of the Trust Agreement.

         (e) Pro Rata Reduction of Call Warrants if Partial Redemption of
Underlying Securities. If Underlying Securities are redeemed in part by the
Underlying Securities Issuer and the Warrant Holders do not exercise their
Call Rights in connection with such partial redemption, the number of Call
Warrants held by each Warrant Holder shall be reduced proportionately so that
the aggregate amount of Class A-1 Certificates callable by Call Warrants shall
equal the amount of outstanding Class A-1 Certificates after giving effect to
such partial redemption and the aggregate notional amount of Class A-2
Certificates callable by Call Warrants shall equal the outstanding notional
amount of Class A-2 Certificates after giving effect to such partial
redemption. The Warrant Agent shall make such adjustments to its records as
shall be necessary to reflect such reductions and shall notify each Warrant
Holder of such adjustments.

         Section 18.

RESTRICTIONS ON TRANSFER

         (a) Restrictive Legends. Except as otherwise permitted by this
Article II, each Call Warrant (including each Call Warrant issued upon the
transfer of any Call Warrant) shall be issued with a legend in substantially
the following form:

     "This Call Warrant has not been registered under the Securities Act of
     1933, as amended, and may not be transferred, sold or otherwise disposed
     of except while a registration under such Act is in effect or pursuant to
     an exemption therefrom under such Act. The Call Warrant represented
     hereby may be transferred only in compliance with the conditions
     specified in the Call Warrants."

         (b) Notice of Proposed Transfer; Opinions of Counsel. Prior to any
transfer of any Call Warrant or portion thereof, the Warrant Holder will give
5 Business Days (or such lesser period acceptable to the Warrant Agent) prior
written notice to the Warrant Agent of such Warrant Holder's intention to
effect such transfer.

         Section 19.

REGISTRATION AND TRANSFER OF CALL WARRANTS, ETC.

         (a) Warrant Register; Ownership of Call Warrants. The Warrant Agent
will keep a register in which the Warrant Agent will provide for the
registration of Call Warrants and the registration of transfers of Call
Warrants representing numbers of Call Warrants. The Trustee and the Warrant
Agent may treat the Person in whose name any Call Warrant is registered on
such register as the owner thereof for all purposes, and the Trustee and the
Warrant Agent shall not be affected by any notice to the contrary.

         (b) Transfer and Exchange of Call Warrants. (a) No Call Warrant may
be offered, resold, assigned or otherwise transferred (including by pledge or
hypothecation) at any time prior to (x) the date which is two years or such
shorter period of time as permitted by Rule 144(k) under the Securities Act
after the later of the original issue date of such Call Warrants and the


                                     B-4


<PAGE>


last date on which the Depositor or any "affiliate" (as defined in Rule 144
under the Securities Act) of the Depositor was the owner of such Call Warrant
(or any predecessor thereto) or (y) or such later date, if any, as may be
required by a change in applicable securities laws (the "Resale Restriction
Termination Date") unless such offer, resale, assignment or transfer is (i) to
the Trust, (ii) pursuant to an effective registration statement under the
Securities Act, (iii) to a qualified institutional buyer (a "QIB"), as such
term is defined in Rule 144A promulgated under the Securities Act ("Rule
144A"), in accordance with Rule 144A or (iv) pursuant to another available
exemption from registration provided under the Securities Act, and, in each of
cases (i) through (iv), in accordance with any applicable securities laws of
any state of the United States and other jurisdictions. Prior to any offer,
resale, assignment or transfer of any Call Warrant in the manner described in
clause (iii) above, the prospective transferee and the prospective transferor
shall be required to deliver to the Trustee an executed copy of an Investment
Letter with respect to the Call Warrants to be transferred substantially in
the form of Exhibit C to the Series Supplement. Prior to any offer, resale,
assignment or transfer of any Call Warrants in the manner described in clause
(iv) above, the prospective transferee and the prospective transferor shall be
required to deliver to the Trustee documentation certifying that the offer,
resale, assignment or transfer complies with the provisions of said clause
(iv). In addition to the foregoing, each prospective transferee of any Call
Warrants in the manner contemplated by clause (iii) above shall acknowledge,
represent and agree as follows:


         (1)      The transferee (x) is a QIB, (y) is aware that the sale to
                  it is being made in reliance on Rule 144A and (z) is
                  acquiring such Call Warrant for its own account or for the
                  account of a QIB.

         (2)      The transferee understands that the Call Warrant are being
                  offered in a transaction not involving any public offering
                  in the United States within the meaning of the Securities
                  Act, and that the Call Warrants have not been and will not
                  be registered under the Securities Act.

         (3)      The transferee agrees that (A) if in the future it decides
                  to offer, resell, pledge or otherwise transfer the Call
                  Warrants prior to the Resale Restriction Termination Date,
                  such Call Warrants shall only be offered, resold, assigned
                  or otherwise transferred (i) to the Trust, (ii) pursuant to
                  an effective registration statement under the Securities
                  Act, (iii) to a QIB, in accordance with Rule 144A or (iv)
                  pursuant to another available exemption from registration
                  provided under the Securities Act, and, in each of cases (i)
                  through (iv), in accordance with any applicable securities
                  laws of any state of the United States and other
                  jurisdictions and (B) the transferee will, and each
                  subsequent holder is required to, notify any subsequent
                  purchaser of such Call Warrants from it of the resale
                  restrictions referred to in clause (A) above.

         (b)   Upon surrender of any Call Warrant for registration of
transfer or for exchange to the Warrant Agent, the Warrant Agent shall
(subject to compliance with Article II) execute and deliver, and cause the
Trustee, on behalf of the Trust, to execute and deliver, in exchange therefor,
a new Call

                                     B-5

<PAGE>


Warrant of like tenor and evidencing a like number of Call Warrants, in the
name of such Warrant Holder or as such Warrant Holder (upon payment by such
Warrant Holder of any applicable transfer taxes or government charges) may
direct; provided that as a condition precedent for transferring the Call
Warrants, the prospective transferee shall deliver to the Trustee and the
Depositor an executed copy of the Investment Letter (set forth as Exhibit C to
the Series Supplement), if the same is required pursuant to the provisions of
clause (a) above.

         (c) Replacement of Call Warrants. Upon receipt of evidence reasonably
satisfactory to the Warrant Agent of the loss, theft, destruction or
mutilation of any Call Warrant and, in the case of any such loss, theft or
destruction of any Call Warrant, upon delivery of an indemnity bond in such
reasonable amount as the Warrant Agent may determine, or, in the case of any
such mutilation, upon the surrender of such Call Warrant for cancellation to
the Warrant Agent, the Warrant Agent shall execute and deliver, and cause the
Trustee, on behalf of the Trust, to execute and deliver, in lieu thereof, a
new Call Warrant of like tenor bearing a number not contemporaneously
outstanding.

         (d) Execution and Delivery of Call Warrants by Trustee. The Trustee,
on behalf of the Trust, hereby agrees (subject to compliance with Article II)
to execute and deliver such new Call Warrants issued in accordance with
Section 1.2 or this Article III as the Warrant Agent shall request in
accordance herewith.

         Section 20.

DEFINITIONS

     As used herein, unless the context otherwise requires, the following
     terms have the following respective meanings:

     "Business Day": As defined in the Trust Agreement.

     "Call Date": Any Business Day (i) on or after May 1, 2007, (ii) after the
     Underlying Securities Issuer announces that it will redeem (in whole or
     in part) or otherwise make an unscheduled payment on the Underlying
     Securities, (iii) after the Trustee notifies the Certificateholders of
     any proposed sale of the Underlying Securities pursuant to the provisions
     of this Series Supplement or (iv) on which a tender offer for some or all
     of the Underlying Securities is consummated.

         "Call Notice": As defined in Section 1.1(a)(i) hereof.

         "Call Price": For each related Call Date, (i) in the case of the
Class A-1 Certificates, 100% of the outstanding Certificate Principal Balance
of the Class A-1 Certificates being purchased pursuant to the exercise of the
Call Warrants, plus any accrued and unpaid interest on such amount to but
excluding the Call Date and (ii) in the case of the Class A-2 Certificates,
present value of all amounts that would otherwise have been payable on the
Class A-2 Certificates being purchased pursuant to the exercise of the Call
Warrants for the period from the related Call Date to the Final Scheduled
Distribution Date using a discount rate of 8.62% per annum, assuming no
delinquencies, deferrals, redemptions or prepayments on the Underlying
Securities shall occur after the related Call Date.


                                     B-6

<PAGE>


     "Call Warrant": As defined in the recitals.

     "Called Certificates": As defined in Section 1.1(b) hereof.

     "Called Underlying Securities": As defined in Section 1.1(b) hereof.

     "Closing Date": May 1, 2002.

     "Depositor": As defined in the recitals.

     "Depositor Order": As defined in the Trust Agreement.

     "Person": Any individual, corporation, partnership, joint venture,
     association, joint stock company, trust (including any beneficiary
     thereof), unincorporated organization or government or any agency or
     political subdivision thereof.

     "Rating Agencies": Standard & Poor's Ratings Services and Moody's
     Investors Service, Inc. and any successor thereto.

     "Responsible Officer": As defined in the Trust Agreement.

     "Securities Act": The Securities Act of 1933, or any similar federal
     statute, and the rules and regulations of the Commission thereunder, all
     as the same shall be in effect at the time.

     "Trust": As defined in the recitals.

     "Trust Agreement": As defined in the recitals.

     "Trustee": As defined in the recitals, or any successor thereto
     under the Trust Agreement.

     "Warrant Agent": As defined in the recitals, or any successor
     thereto under this Warrant Agent Agreement.

     "Warrant Agent Agreement": As defined in the recitals.

     "Warrant Holder": As defined in Section 1.1(a) hereof.

         Section 21.

WARRANT AGENT

         (a) Limitation on Liability. The Warrant Agent shall be protected and
shall incur no liability for or in respect of any action taken, suffered or
omitted by it in connection with its administration of the Call Warrants in
reliance upon any instrument of assignment or transfer, power of attorney,
endorsement, affidavit, letter, notice, direction, consent, certificate,
statement or other paper or document in good faith believed by it to be
genuine and to be signed, executed and, where necessary, verified and
acknowledged, by the proper Person or Persons.

         (b) Duties of Warrant Agent. The Warrant Agent undertakes only the
specific duties and obligations imposed hereunder upon the following terms and
conditions, by all of which the Depositor, the Trust, the Trustee and each
Warrant Holder shall be bound:

               (i) The Warrant Agent may consult with legal counsel (who may
          be legal counsel for the Depositor), and the opinion of such counsel
          shall be full and complete authorization and protection to the
          Warrant Agent as to any action taken or omitted by it


                                     B-7

<PAGE>

          in good faith and in accordance with such opinion, provided the
          Warrant Agent shall have exercised reasonable care in the selection
          by it of such counsel.

               (ii) Whenever in the performance of its duties hereunder, the
          Warrant Agent shall deem it necessary or desirable that any fact or
          matter be proved or established by the Depositor or the Trustee
          prior to taking or suffering any action hereunder, such fact or
          matter may be deemed to be conclusively proved and established by a
          Depositor Order or a certificate signed by a Responsible Officer of
          the Trustee and delivered to the Warrant Agent; and such certificate
          shall be full authorization to the Warrant Agent for any action
          taken or suffered in good faith by it hereunder in reliance upon
          such certificate.

               (iii) The Warrant Agent shall be liable hereunder only for its
          own negligence, willful misconduct or bad faith.

               (iv) The Warrant Agent shall not be liable for or by reason of
          any of the statements of fact or recitals contained herein or be
          required to verify the same, but all such statements and recitals
          are and shall be deemed to have been made by the Trust and the
          Depositor only.

               (v) The Warrant Agent shall not have any responsibility in
          respect of and makes no representation as to the validity of the
          Call Warrants or the execution and delivery thereof (except the due
          execution hereof by the Warrant Agent); nor shall it be responsible
          for any breach by the Trust of any covenant or condition contained
          in the Call Warrants; nor shall it by any act thereunder be deemed
          to make any representation or warranty as to the Certificates to be
          purchased thereunder.

               (vi) The Warrant Agent is hereby authorized and directed to
          accept instructions with respect to the performance of its duties
          hereunder from the Chairman of the Board, the Chief Executive
          Officer, Chief Financial Officer, Chief Operating Officer,
          President, a Vice President, a Senior Vice President, a Managing
          Director, its Treasurer, an Assistant Treasurer, its Secretary or an
          Assistant Secretary of the Depositor, and any Responsible Officer of
          the Trustee, and to apply to such officers for advice or
          instructions in connection with its duties, and it shall not be
          liable for any action taken or suffered to be taken by it in good
          faith in accordance with instructions of any such officer.

               (vii) The Warrant Agent and any shareholder, director, officer
          or employee of the Warrant Agent may buy, sell or deal in any of the
          Call Warrants or other securities of the Trust or otherwise act as
          fully and freely as though it were not Warrant Agent hereunder, so
          long as such persons do so in full compliance with all applicable
          laws. Nothing herein shall preclude the Warrant Agent from acting in
          any other capacity for the Trust, the Depositor or for any other
          legal entity.

               (viii) The Warrant Agent may execute and exercise any of the
          rights or powers hereby vested in it or perform any duty hereunder
          either itself or by or through its attorneys or agents.

               (ix) The Warrant Agent shall act solely as the agent of the
          Trust hereunder. The Warrant Agent shall not be liable except for
          the failure to perform such duties as are


                                     B-8


<PAGE>


          specifically set forth herein, and no implied covenants or
          obligations shall be read into the Call Warrants against the Warrant
          Agent, whose duties shall be determined solely by the express
          provisions thereof. The Warrant Agent shall not be deemed to be a
          fiduciary.

               (x) The Warrant Agent shall not be responsible for any failure
          on the part of the Trustee to comply with any of its covenants and
          obligations contained herein.

               (xi) The Warrant Agent shall not be under any obligation or
          duty to institute, appear in or defend any action, suit or legal
          proceeding in respect hereof, unless first indemnified to its
          satisfaction, but this provision shall not affect the power of the
          Warrant Agent to take such action as the Warrant Agent may consider
          proper, whether with or without such indemnity. The Warrant Agent
          shall promptly notify the Depositor and the Trustee in writing of
          any claim made or action, suit or proceeding instituted against it
          arising out of or in connection with the Call Warrants.

               (xii) The Trustee will perform, execute, acknowledge and
          deliver or cause to be performed, executed, acknowledged and
          delivered all such further acts, instruments and assurances as may
          be required by the Warrant Agent in order to enable it to carry out
          or perform its duties hereunder.

         (c) Change of Warrant Agent. The Warrant Agent may resign and be
discharged from its duties hereunder upon thirty (30) days notice in writing
mailed to the Depositor and the Trustee by registered or certified mail, and
to the Warrant Holders by first-class mail at the expense of the Depositor;
provided that no such resignation or discharge shall become effective until a
successor Warrant Agent shall have been appointed hereunder. The Depositor may
remove the Warrant Agent or any successor Warrant Agent upon thirty (30) days
notice in writing, mailed to the Warrant Agent or successor Warrant Agent, as
the case may be, and to the Warrant Holders by first-class mail; provided,
further, that no such removal shall become effective until a successor Warrant
Agent shall have been appointed hereunder. If the Warrant Agent shall resign
or be removed or shall otherwise become incapable of acting, the Depositor
shall promptly appoint a successor to the Warrant Agent, which may be
designated as an interim Warrant Agent. If an interim Warrant Agent is
designated, the Depositor shall then appoint a permanent successor to the
Warrant Agent, which may be the interim Warrant Agent. If the Depositor shall
fail to make such appointment of a permanent successor within a period of
thirty (30) days after such removal or within sixty (60) days after
notification in writing of such resignation or incapacity by the resigning or
incapacitated Warrant Agent or by the Warrant Holder, then the Warrant Agent
or registered Warrant Holder may apply to any court of competent jurisdiction
for the appointment of such a successor. Any successor to the Warrant Agent
appointed hereunder must be rated in one of the four highest rating categories
by the Rating Agencies. Any entity which may be merged or consolidated with or
which shall otherwise succeed to substantially all of the trust or agency
business of the Warrant Agent shall be deemed to be the successor Warrant
Agent without any further action.

         (d) Warrant Agent Transfer Fee. The Warrant Agent will assess a fee
of $50.00 upon the issue of any new Call Warrant, such fee to be assessed upon
the new Call Warrant Holder.


                                     B-9


<PAGE>

         Section 22.

MISCELLANEOUS

         (a) Remedies. The remedies at law of the Warrant Holder in the event
of any default or threatened default by the Warrant Agent in the performance
of or compliance with any of the terms of the Call Warrants are not and will
not be adequate and, to the full extent permitted by law, such terms may be
specifically enforced by a decree for the specific performance of any
agreement contained herein or by an injunction against a violation of any of
the terms thereof or otherwise.

         (b) Limitation on Liabilities of Warrant Holder. Nothing contained in
this Warrant Agent Agreement shall be construed as imposing any obligation on
the Warrant Holder to purchase any of the Certificates except in accordance
with the terms thereof.

         (c) Notices. All notices and other communications under this Warrant
Agent Agreement shall be in writing and shall be delivered, or mailed by
registered or certified mail, return receipt requested, by a nationally
recognized overnight courier, postage prepaid, addressed (a) if to any Warrant
Holder, at the registered address of such Warrant Holder as set forth in the
register kept by the Warrant Agent or (b) if to the Warrant Agent, to 100 Wall
Street, Suite 1600, New York, New York 10005, Attention: Corporate Trust or to
such other address notice of which the Warrant Agent shall have given to the
Warrant Holder and the Trustee or (c) if to the Trust or the Trustee, to the
Corporate Trust Office (as set forth in the Trust Agreement); provided that
the exercise of any Call Warrants shall be effective in the manner provided in
Article I. The Warrant Agent shall forward to the Warrant Holder any notices
received by it hereunder or pursuant to the Trust Agreement or this Agreement
by facsimile within one Business Day of receipt thereof.

         (d) Amendment. (a) This Warrant Agent Agreement may be amended from
time to time by the Depositor, the Trustee and the Warrant Agent without the
consent of any Warrant Holder, upon receipt of an opinion of counsel
satisfactory to the Warrant Agent that the provisions hereof have been
satisfied and that such amendment would not cause the Trust to be taxed as an
association or publicly traded partnership taxable as a Corporation under the
Code, for any of the following purposes: (i) to cure any ambiguity or to
correct or supplement any provision herein which may be defective or
inconsistent with any other provision herein or to provide for any other terms
or modify any other provisions with respect to matters or questions arising
under the Call Warrant which shall not adversely affect in any material
respect the interests of the Warrant Holder or any holder of a Certificate or
(ii) to evidence and provide for the acceptance of appointment hereunder of a
Warrant Agent other than U.S. Bank Trust National Association.

               (i) Without limiting the generality of the foregoing, the Call
          Warrants may also be modified or amended from time to time by the
          Depositor, the Trustee and the Warrant Agent with the consent of
          Warrant Holders of 66-2/3% of each of the Call Warrants related to
          the Class A-1 Certificates and the Call Warrants related to the
          Class A-2 Certificates, upon receipt of an opinion of counsel
          satisfactory to the Warrant Agent that the provisions hereof
          (including, without limitation, the following proviso) have seen


                                     B-10


<PAGE>


          satisfied, for the purpose of adding any provisions to or changing
          in any manner or eliminating any of the provisions of the Call
          Warrants or of modifying in any manner the rights of the Warrant
          Holders; provided, however, that no such amendment shall (i)
          adversely affect in any material respect the interests of holders of
          Certificates without the consent of the holders of Certificates
          evidencing not less than the Required Percentage-Amendment of the
          aggregate Voting Rights of such affected Certificates (as such terms
          are defined in the Trust Agreement) and without written confirmation
          from the Rating Agencies that such amendment will not result in a
          downgrading or withdrawal of its rating of the Certificates; (ii)
          alter the terms on which Call Warrants are exercisable or the
          amounts payable upon exercise of a Warrant without the consent of
          the holders of Certificates evidencing not less than 100% of the
          aggregate Voting Rights of such affected Certificates and 100% of
          the affected Warrant Holders or (iii) reduce the percentage of
          aggregate Voting Rights required by (i) or (ii) without the consent
          of the holders of all such affected Certificates. Notwithstanding
          any other provision of this Warrant, this Section 6.4(b) shall not
          be amended without the consent of 100% of the affected Warrant
          Holders.

               (ii) Promptly after the execution of any such amendment or
          modification, the Warrant Agent shall furnish a copy of such
          amendment or modification to each Warrant Holder, to the Trustee and
          to the Rating Agencies. It shall not be necessary for the consent of
          Warrant Holders or holders of Certificates under this Section to
          approve the particular form of any proposed amendment, but it shall
          be sufficient if such consent shall approve the substance thereof.
          The manner of obtaining such consents and of evidencing the
          authorization of the execution thereof shall be subject to such
          reasonable regulations as the Warrant Agent may prescribe.

         (e) Expiration. The right to exercise the Call Warrants shall expire
on the earliest to occur of (a) the cancellation thereof, (b) the termination
of the Trust Agreement, or (c) the liquidation, disposition, or maturity of
all of the Underlying Securities.

         (f) Descriptive Headings. The headings in this Warrant Agent
Agreement are for purposes of reference only and shall not limit or otherwise
affect the meaning hereof.

         (g) GOVERNING LAW. THIS AGREEMENT SHALL BE CONSTRUED AND ENFORCED IN
ACCORDANCE WITH, AND THE RIGHTS OF THE PARTIES SHALL BE GOVERNED BY, THE LAW
OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES OF CONFLICT OF LAWS.

         (h) Judicial Proceedings; Waiver of Jury. Any judicial proceeding
brought against the Trust, the Trustee or the Warrant Agent with respect to
this Warrant Agent Agreement may be brought in any court of competent
jurisdiction in the County of New York, State of New York or of the United
States of America for the Southern District of New York and, by execution and
delivery of the Call Warrants, the Trustee on behalf of the Trust and the
Warrant Agent (a) accept, generally and unconditionally, the nonexclusive
jurisdiction of such courts and any related appellate court, and irrevocably
agree that the Trust, the Trustee and the Warrant Agent shall be bound by any
judgment rendered thereby in connection with this Warrant Agent Agreement or
the Call Warrants, subject to any rights of appeal, and (b) irrevocably waive
any


                                     B-11


<PAGE>


          objection that the Trust, the Trustee or the Warrant Agent may
          now or hereafter have as to the venue of any such suit, action or
          proceeding brought in such a court or that such court is an
          inconvenient forum.

               (i) Nonpetition Covenant; No Recourse. Each of (i) the Warrant
          Holder by its acceptance thereof, and (ii) the Warrant Agent agrees,
          that it shall not (and, in the case of the Warrant Holder, that it
          shall not direct the Warrant Agent to), until the date which is one
          year and one day after the payment in full of the Certificates and
          all other securities issued by the Trust, the Depositor or entities
          formed, established or settled by the Depositor, acquiesce, petition
          or otherwise invoke or cause the Trust, the Depositor, or any such
          other entity to invoke the process of the United States of America,
          any State or other political subdivision thereof or any entity
          exercising executive, legislative, judicial, regulatory or
          administrative functions of or pertaining to government for the
          purpose of commencing or sustaining a case by or against the Trust,
          the Depositor or any such other entity under a federal or state
          bankruptcy, insolvency or similar law or appointing a receiver,
          liquidator, assignee, trustee, custodian, sequestrator or other
          similar official of the Trust, the Depositor or any such other
          entity or all or any part of the property or assets of Trust, the
          Depositor or any such other entity or ordering the winding up or
          liquidation of the affairs of the Trust, the Depositor or any such
          other entity.


                                     B-12


<PAGE>


         IN WITNESS WHEREOF, the parties hereto have caused their names to be
signed hereto by their respective duly authorized officers of the date first
above written.



                            LEHMAN ABS CORPORATION,
                               as Depositor



                            By:
                                 -------------------------------------------
                                 Name:  Rene Canezin
                                 Title:    Senior Vice President


                            U.S. BANK TRUST NATIONAL ASSOCIATION,
                                  not in its individual
                                  capacity but solely as
                                  Trustee and Authenticating Agent


                            By:
                                 -------------------------------------------
                                 Name:  David Kolibachuk
                                 Title: Assistant Secretary and Vice President




                             U.S. BANK TRUST NATIONAL ASSOCIATION,
                                 as Warrant Agent


                             By:
                                 -------------------------------------------
                                 Name:  David Kolibachuk
                                 Title: Assistant Secretary and Vice President


                                     B-13


<PAGE>


                                   EXHIBIT C

                           FORM OF INVESTMENT LETTER

                         QUALIFIED INSTITUTIONAL BUYER

                                                  Dated:[_______________]

U.S. Bank Trust National Association,
100WallStreet
NewYork,NewYork10005

Lehman Brothers Inc.
745SeventhAvenue
NewYork,NewYork10019

Lehman ABS Corporation
745SeventhAvenue
NewYork,NewYork10019

               Ladies and Gentlemen:

         In connection with our proposed purchase of ___________ [Call
Warrants] [Class A-2 Certificates] (the "Securities") representing an interest
in the Corporate Backed Trust Certificates, AT&T Wireless Services Note-Backed
Series 2002-7 Trust (the "Trust"), the investor on whose behalf the
undersigned is executing this letter (the "Purchaser") confirms that:

         (1) Reference is made to the Prospectus Supplement, dated April 19,
2002 (the "Prospectus Supplement"), with respect to the Certificates to which
the Securities relate. Capitalized terms used herein that are not otherwise
defined shall have the meanings ascribed thereto in the Prospectus Supplement.
The Purchaser has received a copy of the Prospectus Supplement and such other
information as the Purchaser deems necessary in order to make its investment
decision and the Purchaser has been provided the opportunity to ask questions
of, and receive answers from, the Depositor and the Underwriters, concerning
the terms and conditions of the Securities. The Purchaser has received and
understands the above, and understands that substantial risks are involved in
an investment in the Securities. The Purchaser represents that in making its
investment decision to acquire the Securities, the Purchaser has not relied on
representations, warranties, opinions, projections, financial or other
information or analysis, if any, supplied to it by any person, including you,
the Depositor or the Trustee or any of your or their affiliates, except as
expressly contained in the Prospectus Supplement and in the other written
information, if any, discussed above. The Purchaser has such knowledge and
experience in financial and business matters as to be capable of evaluating
the merits and risks of an investment in the Securities, and the Purchaser is
able to bear the substantial economic risks of such an investment. The
Purchaser has relied upon its own tax, legal and financial advisors in
connection with its decision to purchase the Securities.

         (2) The Purchaser is (A) a "Qualified Institutional Buyer" (as
defined in Rule 144A under the Securities Act of 1933, as amended (the "1933
Act")) and (B) acquiring the Securities for its


                                     C-1


<PAGE>


own account or for the account of an investor of the type described in clause
(A) above as to each of which the Purchaser exercises sole investment
discretion. The Purchaser is purchasing the Securities for investment purposes
and not with a view to, or for, the offer or sale in connection with, a public
distribution or in any other manner that would violate the 1933 Act or the
securities or blue sky laws of any state.

         (3) The Purchaser understands that the Securities have not been and
will not be registered under the 1933 Act or under the securities or blue sky
laws of any state, and that if it decides to resell, pledge or otherwise
transfer any Security, such Security may be resold, pledged or transferred
without registration only (i) to the Trust, (ii) to an entity that has
delivered to the Depositor and the Trustee a certification that it is a
Qualified Institutional Buyer that purchases (x) for its own account or (y)
for the account of such a Qualified Institutional Buyer, that is, in either
case, aware that the resale, pledge or transfer is being made in reliance on
said Rule 144A or (iii) pursuant to another available exemption from
registration provided under the Securities Act, and, in each of cases (i)
through (iii), in accordance with the provisions of the Series Supplement
(including, without limitation, the provisions of Section 3(e) thereof) and
any applicable securities laws of any state of the United States and other
jurisdictions. Prior to any offer, resale, assignment or transfer of any
Securities in the manner described in clause (ii) above, the prospective
transferee and the prospective transferor shall be required to deliver to the
Trustee an executed copy of an Investment Letter with respect to the
Securities to be transferred substantially in the form hereof. Prior to any
offer, resale, assignment or transfer of any Securities in the manner
described in clause (iii) above, the prospective transferee and the
prospective transferor shall be required to deliver to the Trustee
documentation certifying that the offer, resale, assignment or transfer
complies with the provisions of said clause (iii). The Purchaser will, and
each subsequent holder will be required to, notify any purchaser of any
Security from it of the resale restrictions referred to in this Paragraph 3.

         (4) The Purchaser understands that each of the Securities will bear a
legend to the following effect, unless otherwise agreed by the Depositor and
the Trustee:

         "THIS [CALL WARRANT] [CLASS A-2 CERTIFICATE] HAS NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE TRANSFERRED, SOLD
OR OTHERWISE DISPOSED OF EXCEPT WHILE A REGISTRATION UNDER SUCH ACT IS IN
EFFECT OR PURSUANT TO AN EXEMPTION THEREFROM UNDER SUCH ACT. THIS [CALL
WARRANT] [CLASS A-2 CERTIFICATE] REPRESENTED HEREBY MAY BE TRANSFERRED ONLY IN
COMPLIANCE WITH THE CONDITIONS SPECIFIED HEREIN."

         (5) The Purchaser understands that no subsequent transfer of the
Securities is permitted unless it causes its proposed transferee to provide to
the Depositor and the initial Warrant Holder with the documentation required
pursuant to Paragraph 3 above.

         (6) The Purchaser agrees that if at some time in the future it wishes
to transfer or exchange any of the Securities, it will not transfer or
exchange any of the Securities unless such transfer or exchange is in
accordance with the provisions of the Trust Agreement, including, without
limitation, the provisions of Section 3(e) of the Series Supplement. The
Purchaser understands that any purported transfer of the Securities (or any
interest therein) in contravention


                                     C-2


<PAGE>


of any of the restrictions and conditions in the Trust Agreement, as
applicable, shall be void, and the purported transferee in such transfer shall
not be recognized by the Trust or any other Person as a holder of such
Securities.

         You and the Trustee are entitled to rely upon this letter and are
irrevocably authorized to produce this letter or a copy hereof to any
interested party in any administrative or legal proceeding or official inquiry
with respect to the matters covered hereby.

                                   Very truly yours,

                                   By:
                                       ------------------------
                                   Name:
                                   Title:

                     [Medallion Stamp to be affixed here]


                                     C-3