Document:

<PAGE>   1
                                                                     Exhibit 4.1

                                  DISCOVER BANK

                      Master Servicer, Servicer and Seller

                                       and

                         U.S. BANK NATIONAL ASSOCIATION

                                     Trustee

                       on behalf of the Certificateholders

                                SERIES SUPPLEMENT

                           Dated as of April 17, 2001

                                       to

                         POOLING AND SERVICING AGREEMENT

                           Dated as of October 1, 1993

                        $500,000,000 Class A Certificates

                        $26,316,000 Class B Certificates

                          DISCOVER CARD MASTER TRUST I

                          SERIES 2001 - 4 CERTIFICATES
<PAGE>   2
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                               Page
                                                                               ----
<S>                                                                            <C>
SERIES TERM SHEET........................................................        1
ANNEX....................................................................        1
SECTION 1.    Definitions................................................        1
SECTION 2.    Subordination..............................................       26
SECTION 3.    Representations and Warranties of the Sellers..............       26
SECTION 4.    Representations and Warranties of Discover Bank as Master
                    Servicer and Servicer................................       27
SECTION 5.    Representations and Warranties of Other Servicers..........       27
SECTION 6.    Representations and Warranties of the Trustee..............       28
SECTION 7.    Authentication of Certificates.............................       28
SECTION 8.    Establishment and Administration of Investor Accounts and
                    the Credit Enhancement Account.......................       28
SECTION 9.    Allocations of Collections.................................       32
SECTION 10.   Payments...................................................       45
SECTION 11.   Credit Enhancement.........................................       48
SECTION 12.   Alternative Credit Support Election........................       50
SECTION 13.   Calculation of Investor Losses.............................       51
SECTION 14.   Servicing Compensation.....................................       52
SECTION 15.   Class Interest Rate Caps...................................       52
SECTION 16.   Class Interest Rate Swaps..................................       54
SECTION 17.   Investor Certificateholders' Monthly Statement.............       54
SECTION 18.   Master Servicer's Monthly Certificate......................       54
SECTION 19.   Notices....................................................       54
SECTION 20.   Additional Amortization Events.............................       54
SECTION 21.   Early Accumulation Events; Additional Amortization Events..       55
SECTION 22.   Purchase of Investor Certificates and Series Termination...       56
SECTION 23.   Variable Accumulation Period...............................       57
SECTION 24.   Optional Accumulation Period Commencement..................       57
SECTION 25.   Series Yield Factor........................................       58
SECTION 26.   Ratification of Pooling and Servicing Agreement............       58
SECTION 27.   Counterparts...............................................       58
SECTION 28.   Governing Law..............................................       58
SECTION 29.   Intention of Parties.......................................       58
</TABLE>

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<PAGE>   3
                                    EXHIBITS

EXHIBIT A:        Form of Investors Certificates

EXHIBIT B:        Form of Certificateholders' Monthly Statement

EXHIBIT C:        Form of Master Servicer's Monthly Certificate

                                       ii
<PAGE>   4
                          DISCOVER CARD MASTER TRUST I
                          SERIES 2001 - 4 CERTIFICATES

            This Series of Master Trust Certificates is established pursuant to
Section 6.06 of that certain Pooling and Servicing Agreement, dated as of
October 1, 1993, as amended, by and between DISCOVER BANK (formerly Greenwood
Trust Company), a Delaware banking corporation ("Discover Bank"), as Master
Servicer, Servicer and Seller and U.S. BANK NATIONAL ASSOCIATION (formerly First
Bank National Association, successor trustee to Bank of America Illinois,
formerly Continental Bank, National Association) (the "Trustee"), as Trustee
(the "Pooling and Servicing Agreement"). This SERIES TERM SHEET and the ANNEX
attached hereto, by and among the Master Servicer, the Servicers, the Sellers
and the Trustee, constitute the SERIES SUPPLEMENT (the "Series Supplement"). The
Pooling and Servicing Agreement and this Series Supplement together establish
the Series of Master Trust Certificates to be known as the DISCOVER CARD MASTER
TRUST I, SERIES 2001 - 4 CERTIFICATES.

                                SERIES TERM SHEET

<TABLE>
<S>                                                                  <C>
Date of Series Term Sheet                                            April 17, 2001.

Group                                                                One.

Series Initial Investor Interest                                     $526,316,000

Class Initial Investor Interest of each Class of                     Class A - $500,000,000.
Investor Certificates
                                                                     Class B - $26,316,000.

Class A Expected Final Payment Date                                  The Distribution Date in April 2004.

Class B Expected Final Payment Date                                  The Distribution Date in May 2004.

Type of Structure                                                    Bullet Maturity.

Certificate Rates                                                    Class A - LIBOR plus 0.09% per annum, calculated on the
                                                                     basis of the actual number of days elapsed and a 360-day
                                                                     year.

                                                                     Class B - LIBOR plus 0.37% per annum, calculated on the
                                                                     basis of the actual number of days elapsed and a 360-day
                                                                     year.

Monthly Amortization Rate                                            Not applicable.

Prepayment Calculation Table                                         Not applicable.

Prepayment Determination Date                                        Not applicable.

Class Cap Rate                                                       Not applicable.
</TABLE>

                                       1
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<TABLE>
<S>                                                                  <C>
Class Maximum Rate                                                   Not applicable.

Class Interest Rate Swap                                             Not applicable.

Interest Rate Swap Counterparty                                      Not applicable.

Swap Trust Rate                                                      Not applicable.

Swap Counterparty Rate                                               Not applicable.

Monthly Swap Deposit                                                 Not applicable.

LIBOR Determination Date                                             The second LIBOR Business Day immediately preceding the
                                                                     commencement of an Interest Accrual Period.

Series Yield Factor                                                  Initially zero, but may be increased pursuant to Section 25.

Series Cut-Off Date                                                  April 1, 2001.

Series Closing Date                                                  April 17, 2001.

Date from which Interest for first Interest Payment                  Series Closing Date.
Date Shall Accrue

Distribution Dates                                                   The 15th day of each calendar month (or, if such day is not
                                                                     a Business Day, the next succeeding Business Day),
                                                                     commencing in May 2001.

Interest Payment Dates                                               The 15th day of each calendar month (or, if such day is not
                                                                     a Business Day, the next succeeding Business Day),
                                                                     commencing in May 2001.

Statement Dates                                                      Each Distribution Date, commencing in May 2001.

Principal Payment Date                                               Not applicable.

Interest Calculation Dates                                           Not applicable.

Accumulation Commencement Date                                       Not applicable.

Accumulation Period                                                  Unless an Amortization Event shall have occurred prior
                                                                     thereto, the period commencing on the Principal Commencement
                                                                     Date and ending on the earliest to occur of (x) the payment
                                                                     in full of the Series Invested Amount, (y) the Amortization
                                                                     Commencement Date, and (z) the Series
</TABLE>

                                       2
<PAGE>   6
<TABLE>
<S>                                                                  <C>
                                                                     Termination Date.

Accumulation Amount                                                  (a) Through the Class A Expected Final Payment Date, (i)
                                                                     $41,666,666.67 or (ii) if the Master Servicer elects to
                                                                     delay commencement of the Accumulation Period in accordance
                                                                     with Section 24, the Class A Initial Investor Interest
                                                                     divided by the number of Distribution Dates from the
                                                                     commencement of the Accumulation Period through and
                                                                     including the Class A Expected Final Payment Date, and (b)
                                                                     thereafter, $26,316,000.00.

Principal Commencement Date                                          The first day of the Due Period related to the May 2003
                                                                     Distribution Date (or such later Distribution Date as the
                                                                     Master Servicer may elect in accordance with Section 23).

Revolving Period                                                     From the Series Cut-Off Date to but excluding the earlier to
                                                                     occur of (i) the Principal Commencement Date, and (ii) the
                                                                     Amortization Commencement Date.

Controlled Liquidation Period                                        Not applicable.

Early Accumulation Period                                            Not applicable.

Type of Credit Enhancement                                           Cash collateral account.

Stated Shared Credit Enhancement Amount                              There shall be no Shared Credit Enhancement.

Stated Class A Credit Enhancement Amount                             There shall be no Class A Cash Collateral Credit Enhancement.

Stated Class B Credit Enhancement Amount                             $39,473,700

Credit Enhancement Provider                                          Collectively, the one or more lenders making a loan in order
                                                                     to provide the initial funds on deposit in the Credit
                                                                     Enhancement Account, or any successor provider of the Credit
                                                                     Enhancement.

Maximum Shared Credit Enhancement Amount                             There shall be no Shared Credit Enhancement.

Maximum Class A Credit Enhancement Amount                            There shall be no Class A Cash Collateral Credit Enhancement.
</TABLE>

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<PAGE>   7
<TABLE>
<S>                                                                  <C>
Maximum Class B Credit Enhancement Amount                            On any Distribution Date (a) prior to the making of an
                                                                     Effective Alternative Credit Support Election, the greater
                                                                     of (i) $5,263,160 and (ii) (x) if a Supplemental Credit
                                                                     Enhancement Event has not occurred, an amount equal to 7.5%
                                                                     of the Series Initial Investor Interest, or (y) if a
                                                                     Supplemental Credit Enhancement Event has occurred, an
                                                                     amount equal to 8.0% of the Series Initial Investor
                                                                     Interest, (b) subsequent to the making of an Effective
                                                                     Alternative Credit Support Election, the greater of (i)
                                                                     $5,263,160 and (ii) an amount equal to 12.5% of the Series
                                                                     Initial Investor Interest, provided, however, that if an
                                                                     Amortization Event with respect to the Series established
                                                                     hereby occurs, the Maximum Class B Credit Enhancement Amount
                                                                     for each Distribution Date thereafter shall equal the
                                                                     Maximum Class B Credit Enhancement Amount for the
                                                                     Distribution Date immediately preceding the occurrence of
                                                                     the Amortization Event; and provided, further, that if a
                                                                     Credit Enhancement Drawing has been made, until such time as
                                                                     the Available Class B Credit Enhancement Amount has been
                                                                     reinstated in an amount at least equal to the amount of such
                                                                     Credit Enhancement Drawing, the Maximum Class B Credit
                                                                     Enhancement Amount shall be the Maximum Class B Credit
                                                                     Enhancement Amount as of the date of such Credit Enhancement
                                                                     Drawing.

Total Maximum Credit Enhancement Amount                              On any Distribution Date, the Maximum Class B Credit
                                                                     Enhancement Amount for such Distribution Date.

Additional Credit Support Amount                                     The lesser of (x)(i) $26,315,800 prior to the occurrence of
                                                                     a Supplemental Credit Enhancement Event or (ii) $23,684,220
                                                                     following the occurrence of a Supplemental Credit
                                                                     Enhancement Event and (y) the difference between the Maximum
                                                                     Class B Credit Enhancement Amount (after giving effect to an
                                                                     Alternative Credit Support Election) and the Available Class
                                                                     B Credit Enhancement Amount (immediately before giving
                                                                     effect to the Alternative Credit Support Election).

Supplemental Credit Enhancement Amount                               The lesser of (x)(i) $2,631,580 prior to the occurrence of
                                                                     an Alternative Credit Support Election or (ii) zero
                                                                     following the occurrence of
</TABLE>

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<PAGE>   8
<TABLE>
<S>                                                                  <C>
                                                                     an Alternative Credit Support Election and (y) the difference
                                                                     between the  Maximum Class B Credit Enhancement Amount
                                                                     (after giving effect to the occurrence of a Supplemental
                                                                     Credit Enhancement Event) and the Available Class B Credit
                                                                     Enhancement Amount (immediately before giving effect to the
                                                                     occurrence of a Supplemental Credit Enhancement Event).

Initial Subordinated Amount                                          $65,789,500.

Additional Subordinated Amount                                       $26,315,800 prior to the occurrence of a Supplemental Credit
                                                                     Enhancement Event and $23,684,220 following the occurrence of a
                                                                     Supplemental Credit Enhancement Event.

Supplemental Subordinated Amount                                     $2,631,580 prior to the effectiveness of an Alternative
                                                                     Credit Support Election and zero following the effectiveness
                                                                     of an Alternative Credit Support Election.

Series Buffer Amount                                                 Zero.

Group Buffer Amount                                                  Zero.

Investor Servicing Fee Percentage                                    2.0% per annum calculated on the basis of a 360-day year of
                                                                     twelve 30-day months.

Supplemental Servicing Fee Percentage                                Zero.

Amount of Additional Funds                                           Initially, zero.

Eligible for Reallocations to and from Other Series in Group         Yes.

Series Termination Date                                              The first Business Day following the Distribution Date in
                                                                     October 2006.

Estimated Investment Shortfall                                       On any date of determination, the positive difference, if
                                                                     any, between (i) the Certificate Rate for the Class for
                                                                     whose benefit the amounts on deposit in the Series Principal
                                                                     Funding Account are held as of such date of determination
                                                                     and (ii) the weighted average yield (expressed as a Money
                                                                     Market Yield) on the investments in the Series Principal
                                                                     Funding Account as of such date of determination.

Estimated Yield                                                      On any date of determination, the Portfolio Yield for the
                                                                     immediately preceding Due Period less
</TABLE>

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<TABLE>
<S>                                                                  <C>
                                                                     2.00%.

Classes, if any, subject to Regulation S restrictions                Not applicable.

Classes, if any, subject to ERISA restrictions                       Class B.

Bearer Certificates                                                  Not applicable.

Registered Certificates                                              Class A and Class B Certificates.

Class A Certificate                                                  Each certificate executed by the Sellers and authenticated
                                                                     by or on behalf of the Trustee, substantially in the form of
                                                                     Exhibit A-1.

Class B Certificate                                                  Each certificate executed by the Sellers and authenticated
                                                                     by or on behalf of the Trustee, substantially in the form of
                                                                     Exhibit A-2.

Principal Paying Agent                                               Class A - Not applicable.

                                                                     Class B - Not applicable.

Paying Agents                                                        Class A and Class B - the Corporate Trust Office of the
                                                                     Trustee.
</TABLE>

                                       6
<PAGE>   10
      IN WITNESS WHEREOF, the Sellers, the Master Servicer, the Servicers and
the Trustee have caused this Series Supplement to be duly executed by their
respective officers thereunto duly authorized as of the date and year first
above written.

                                  DISCOVER BANK,
                                    as Seller, Master Servicer and Servicer

                                    /s/ Michael F. Rickert
                                  ------------------------------------------
                                  Michael F. Rickert
                                  Vice President, Chief Accounting Officer
                                  and Treasurer

                                  U.S. BANK NATIONAL ASSOCIATION,
                                    as Trustee

                                    /s/ Patricia M. Child
                                  -------------------------------------------
                                  Patricia M. Child
                                  Vice President
<PAGE>   11
                                      ANNEX

      In consideration of the mutual agreements herein contained, each party
agrees as follows for the benefit of the other parties and for the benefit of
the Certificateholders:

      SECTION 1.  Definitions

      (a) Capitalized terms not otherwise defined in this Series Supplement
(including the Series Term Sheet) shall have the meanings ascribed to them in
the Pooling and Servicing Agreement. Capitalized terms that refer to a Series or
a Class refer to the Series established hereby or a Class of the Series
established hereby, as applicable, unless the context otherwise clearly
requires.

      (b) The following terms have the definitions set forth below with respect
to the Series established hereby, unless the context otherwise clearly requires:

      "Accumulation Amount," if applicable, shall have the meaning set forth in
the Series Term Sheet; provided, however, that such amount may be adjusted
pursuant to Section 23 or 24.

      "Accumulation Commencement Date," if applicable, shall have the meaning
set forth in the Series Term Sheet.

      "Accumulation Period," if applicable, shall have the meaning set forth in
the Series Term Sheet.

      "Additional Credit Support Amount" shall have the meaning set forth in the
Series Term Sheet.

      "Additional Subordinated Amount" shall have the meaning set forth in the
Series Term Sheet.

      "Alternative Credit Support Election" shall mean an election made by the
Sellers pursuant to Section 12.

      "Amortization Commencement Date" shall mean the date on which an
Amortization Event is deemed to occur pursuant to Section 20 hereof.

      "Amortization Event" shall mean any event specified in Section 9.01 of the
Pooling and Servicing Agreement or in Section 20 hereof.

      "Amortization Period" shall mean the period from, and including, the
Amortization Commencement Date to, and including, the earlier of (i) the date of
the final distribution to Investor Certificateholders of the Series established
hereby and (ii) the Series Termination Date. The first Distribution Date of the
Amortization Period shall be the Distribution Date in the calendar month
following the Amortization Commencement Date.
<PAGE>   12
      "Available Class A Credit Enhancement Amount," if applicable, shall have
the meaning set forth in the Series Term Sheet.

      "Available Class B Credit Enhancement Amount" shall mean, with respect to
the first Distribution Date, the Stated Class B Credit Enhancement Amount, and,
thereafter, shall mean the amount available to be drawn under the Credit
Enhancement with respect to the Available Class B Credit Enhancement Amount from
time to time, which on any date of determination shall be equal to the Available
Class B Credit Enhancement Amount for the immediately preceding Distribution
Date minus the amount of all Credit Enhancement Drawings with respect to the
Available Class B Credit Enhancement Amount on or since such immediately
preceding Distribution Date, plus the amount of all payments made to the Trustee
as administrator of the Credit Enhancement with respect to the Available Class B
Credit Enhancement Amount pursuant to Section 9 plus, following an Effective
Alternative Credit Support Election, the Additional Credit Support Amount and,
plus, following a Supplemental Credit Enhancement Event, the Supplemental Credit
Enhancement Amount; provided, however, that from and after the Fully Funded
Date, if any, the Available Class B Credit Enhancement Amount shall equal zero.

      "Available Shared Credit Enhancement Amount," if applicable, shall mean,
with respect to the first Distribution Date, the Stated Shared Credit
Enhancement Amount, and, thereafter, shall mean the amount available to be drawn
under the Credit Enhancement with respect to the Available Shared Credit
Enhancement Amount from time to time, which on any date of determination shall
be equal to the Available Shared Credit Enhancement Amount for the immediately
preceding Distribution Date minus the amount of all Credit Enhancement Drawings
with respect to the Available Shared Credit Enhancement Amount on or since such
immediately preceding Distribution Date, and plus the amounts of all payments
made to the Trustee as administrator of the Credit Enhancement with respect to
the Available Shared Credit Enhancement Amount pursuant to Section 9.

      "Available Subordinated Amount, " if there is a Subordinate Class with
respect to Class A, shall mean, on a Distribution Date, the sum of

                  (a) (i) with respect to the first Distribution Date, the
      Initial Subordinated Amount or (ii) with respect to any other Distribution
      Date, the Available Subordinated Amount after giving effect to all
      adjustments on the prior Distribution Date; and

                  (b) the amount of Series Excess Servicing;

as such amount may be (x) reduced pursuant to the provisions of Section 9 to
take into account (i) the amount of Class A and Class B Excess Servicing used to
reimburse the Class A Cumulative Investor Charged-Off Amount, (ii) the amount of
Class B Excess Servicing used to reduce the Class A Required Amount Shortfall,
(iii) the amount of the Class B Subordinated Payment and (iv) the amount of any
reduction in the Class B Investor Interest resulting from the reimbursement of
the Class A Cumulative Investor Charged-Off Amount, in each case for such
Distribution Date, and (y) increased pursuant to the provisions of Section 9 to
take into account the application of amounts on deposit in the Group Finance
Charge Collections Reallocation Account (i) to reduce

                                       2
<PAGE>   13
the Class B Required Amount Shortfall, (ii) to reduce the Class B Cumulative
Investor Charged-Off Amount and (iii) to increase the Available Class B Credit
Enhancement Amount, in each case for such Distribution Date; provided, however,
that from and after the Fully Funded Date, if any, the Available Subordinated
Amount will equal zero.

Upon the occurrence of a Supplemental Credit Enhancement Event, the Available
Subordinated Amount will be increased by the Supplemental Subordinated Amount.
In addition, on the first Distribution Date following an Effective Alternative
Credit Support Election, the Available Subordinated Amount shall be increased by
the Additional Subordinated Amount. In no event, however, shall the Available
Subordinated Amount exceed (i) through the last Distribution Date preceding an
Effective Alternative Credit Support Election, the Initial Subordinated Amount
plus the Supplemental Subordinated Amount and (ii) thereafter, the sum of the
Initial Subordinated Amount, the Supplemental Subordinated Amount and the
Additional Subordinated Amount.

      "Calculation Period," if applicable, shall have the meaning specified in
the applicable interest rate cap agreement.

      "Cedel" shall mean Clearstream Banking.

      "Certificate Interest" shall mean, for any Class for any Interest Payment
Date, the product of (a) the Class Invested Amount for such Class for such
Interest Payment Date and (b) a fraction the numerator of which is (1) with
respect to each Class that has no Subclasses, the Certificate Rate for such
Class or (2) with respect to each Class that has two or more Subclasses, the
Class Weighted Average Certificate Rate, and the denominator of which is (x) if
the relevant Certificate Rate is to be calculated on the basis of the actual
number of days elapsed and a 360-day year, 360 divided by the actual number of
days from and including the immediately preceding Interest Payment Date (or, in
the case of the first Interest Payment Date, from and including the Series
Closing Date) to but excluding the current Interest Payment Date or (y) if the
relevant Certificate Rate is to be calculated on the basis of a 360-day year of
twelve 30-day months, twelve divided by the number of Distribution Dates from
and including the preceding Interest Payment Date to but excluding the current
Interest Payment Date (or, in the case of the first Interest Payment Date, 360
divided by the number of days from and including the Series Closing Date to but
excluding the 15th day of the month in which current Interest Payment Date
occurs, assuming 30-day months).

      "Certificate Principal" shall mean, with respect to each Class, the
principal payable in respect of such Class of Investor Certificates.

      "Certificate Rate," with respect to any Class or Subclass, shall mean the
certificate rate set forth in the Series Term Sheet with respect to such Class
or Subclass, as such rate may be adjusted as of the beginning of each Interest
Accrual Period, if applicable; provided, however, that the Certificate Rate for
any Class or Subclass that does not have a fixed Certificate Rate shall not
exceed the Class Cap Rate or Class Maximum Rate, as applicable, for such Class
or Subclass; and PROVIDED, FURTHER, that any interest on the Investor
Certificates (including any interest accrued with respect to any Class
Deficiency Amount) shall be payable or distributed to the Investor
Certificateholders only to the extent permitted by applicable law.

                                       3
<PAGE>   14
      "Class A Cash Collateral Credit Enhancement" shall mean Credit Enhancement
available in the Credit Enhancement Account for the benefit of the Class A
Investor Certificates.

      "Class Additional Funds," if applicable, shall mean, with respect to any
Class for any Distribution Date, an amount equal to the product of (i) a
fraction the numerator of which is the Class Investor Interest and the
denominator of which is the sum of the Class Investor Interests for each Class
of the Series established hereby and (ii) the amount of Series Additional
Investor Funds, in each case for such Distribution Date.

      "Class Alternative Deficiency Amount" shall mean, with respect to each
Class, on any Payment Date, the Class Deficiency Amount that would have been
calculated for such Class on such Payment Date if the aggregate unreimbursed
Investor Losses on such Payment Date equaled zero.

      "Class B Available Collections" shall mean, if there is a Subordinated
Class with respect to Class A, with respect to any Distribution Date, an amount
equal to the sum of (i) Class B Available Finance Charge Collections for such
Distribution Date and (ii) Class B Principal Collections for such Distribution
Date.

      "Class B Available Finance Charge Collections" shall mean, if there is a
Subordinate Class with respect to Class A, with respect to any Distribution
Date, an amount equal to the sum of Class B Finance Charge Collections, Class B
Yield Collections, if any, Class B Investment Income, if any, for the related
Due Period and Class B Additional Funds for such Distribution Date (less Class B
Excess Servicing).

      "Class Cap Rate," if applicable, shall mean, with respect to a Class or
Subclass that does not have a fixed or maximum Certificate Rate, the rate that
is specified as such in the Series Term Sheet and in the Class Interest Rate Cap
with respect to such Class or Subclass.

      "Class Charge-Off Reimbursement Amount" shall mean, with respect to any
Class with respect to any Distribution Date, the total amount by which the Class
Cumulative Investor Charged-Off Amount for such Class is reduced on such
Distribution Date pursuant to Section 9.

      "Class Cumulative Investor Charged-Off Amount" with respect to each Class
for any Distribution Date, shall mean the sum of the Class Investor Charged-Off
Amounts for such Class for all preceding Due Periods that have not been
reimbursed pursuant to Section 9 prior to such Distribution Date, plus the Class
Investor Charged-Off Amount for such Class for the Due Period related to such
Distribution Date, as adjusted pursuant to Section 9 on such Distribution Date.
The Class Cumulative Investor Charged-Off Amount with respect to each Class
initially shall be zero.

      "Class Deficiency Amount" shall mean, with respect to each Class, on any
Payment Date, the amount, if any, by which (a) the sum of (i) Certificate
Interest for such Class accrued since the immediately preceding Payment Date,
(ii) if, since the immediately preceding Payment Date and prior to the current
Payment Date, a Reimbursed Loss Event has occurred, the sum of (A) the
Reimbursed Loss Interest for each previous Distribution Date since the last
Distribution Date on

                                       4
<PAGE>   15
which Investor Losses for such Class equaled zero and (B) the Reimbursed Loss
Interest Gross-up Amount for each previous Distribution Date since the last
Distribution Date on which the aggregate amount of unreimbursed Investor Losses
for such Class equaled zero, (iii) the Class Deficiency Amount on the
immediately preceding Payment Date, and (iv) the Class Deficiency Amount on the
immediately preceding Payment Date multiplied by the product of (A) a fraction
the numerator of which is the weighted average of the Certificate Rates or of
the Class Weighted Average Certificate Rates, as applicable, for such Class for
the relevant Due Periods and the denominator of which is (x) if the relevant
Certificate Rate is to be calculated on the basis of the actual number of days
elapsed and a 360-day year, 360 divided by the actual number of days from and
including the immediately preceding Distribution Date to but excluding the
current Distribution Date or (y) if the relevant Certificate Rate is to be
calculated on the basis of a 360-day year of twelve 30-day months, twelve and
(B) the number of Distribution Dates from and including the preceding Payment
Date to but excluding the current Payment Date exceeds (b) the amount deposited
since the immediately preceding Payment Date into the Series Interest Funding
Account pursuant to Section 10(a)(2)(A).

      "Class Excess Servicing" shall mean, with respect to each Class, on any
Distribution Date, the positive difference, if any, between (i) the sum of Class
Finance Charge Collections for the related Due Period, Class Yield Collections
for the related Due Period, if any, Class Investment Income for the related Due
Period, if any, and Class Additional Funds for such Distribution Date, if any,
and (ii) the Class Required Amount.

      "Class Expected Final Payment Date" with respect to each Class, if
applicable, shall mean the date designated as such in the Series Term Sheet.

      "Class Final Maturity Date" with respect to each Class, if applicable,
shall mean the date designated as such in the Series Term Sheet.

      "Class Finance Charge Collections" shall mean, with respect to any Class,
with respect to any day or any Distribution Date or Trust Distribution Date, as
applicable, an amount equal to the product of (x) the Class Percentage with
respect to Finance Charge Collections for the related Distribution Date and (y)
the amount of Finance Charge Collections for such day or for the related Due
Period, as applicable; provided, however, that Class Finance Charge Collections
for each Class shall be increased by the lesser of (i) the amount of Class
Investment Shortfall for such Class and (ii) an amount equal to the product of
the total amount of Finance Charge Collections otherwise allocable to Discover
Bank on behalf of the Holder of the Seller Certificate for the related Due
Period and a fraction the numerator of which is the Class Invested Amount for
such Class and the denominator of which is the Aggregate Invested Amount; and
provided, further, that notwithstanding the foregoing, Class Finance Charge
Collections for each Class shall not, with respect to any such day, Distribution
Date or Trust Distribution Date during the Accumulation Period or the Early
Accumulation Period, as applicable, exceed the amount that would be available if
the Class Percentage with respect thereto were the percentage equivalent of a
fraction the numerator of which is the amount of the Class Investor Interest on
the last day of the Due Period prior to the commencement of the Accumulation
Period or the Early Accumulation Period, and the denominator of which is the
greater of (i) the amount of Principal Receivables in the Trust on the first day
of the related Due Period and (ii) the sum of the

                                       5
<PAGE>   16
numerators used in calculating the components of the Series Percentage with
respect to Finance Charge Collections for each Series then outstanding
(including the Series established hereby) as of such day, Distribution Date or
Trust Distribution Date, as applicable.

      "Class Initial Investor Interest" shall mean, with respect to each Class,
the aggregate face amount of Investor Certificates of such Class as specified in
the Series Term Sheet.

      "Class Interest Rate Cap," if applicable, shall mean, with respect to a
Class or Subclass that does not have a fixed or maximum Certificate Rate, the
interest rate cap agreement or other interest rate protection for the benefit of
the Investor Certificateholders of such Class or Subclass, dated on or before
the Series Closing Date, between the Trustee, acting on behalf of the Trust, and
the Interest Rate Cap Provider, or any Replacement Interest Rate Cap or
Qualified Substitute Cap Arrangement.

      "Class Interest Rate Cap Payment" shall mean, with respect to a Class or
Subclass that does not have a fixed or maximum Certificate Rate, with respect to
any Interest Payment Date, any payment required to be made on such Interest
Payment Date by the Interest Rate Cap Provider with respect to the Class
Interest Rate Cap for such Class or Subclass.

      "Class Interest Rate Swap," if applicable, shall mean, with respect to a
Class or Subclass, the interest rate swap agreement or other interest rate
protection agreement with respect to any Class or Subclass, dated on the Series
Closing Date, between the Trust and the Swap Counterparty and any replacement or
successor interest rate swap agreement or interest rate protection agreement.

      "Class Invested Amount" shall mean, with respect to any Class for any
Distribution Date, an amount equal to the Class Initial Investor Interest minus
the sum of (a) the aggregate amount of payments of Certificate Principal paid to
such Class of Investor Certificateholders, in each case prior to such
Distribution Date, (b) the aggregate amount of Investor Losses of such Class not
reimbursed prior to such Distribution Date and (c) the aggregate amount of
losses of principal on investments of funds on deposit for the benefit of such
Class in the Series Principal Funding Account, if applicable.

      "Class Investment Income" shall mean, with respect to any Class, income
from the investment of funds on deposit in the Series Principal Funding Account
for the benefit of such Class less Excess Income.

      "Class Investment Shortfall" with respect to each Class with respect to
any Distribution Date during the Accumulation Period or the Early Accumulation
Period, if applicable, shall mean an amount equal to the positive difference, if
any, between (i) one-twelfth of the product of (a) (x) with respect to each
Class that has no Subclasses, the Certificate Rate, or (y) with respect to each
Class that has two or more Subclasses, the Class Weighted Average Certificate
Rate, in each case for the related Due Period, and (b) the amount on deposit in
the Series Principal Funding Account for the benefit of such Class as of the end
of the previous Distribution Date and (ii) Class Investment Income for the
related Due Period.

                                       6
<PAGE>   17
      "Class Investor Charged-Off Amount" shall mean, with respect to each Class
for any Distribution Date, an amount equal to the sum of (i) the product of (a)
the Charged-Off Amount for such Distribution Date and (b) the Class Percentage
with respect to the Charged-Off Amount and (ii) if there is a Subordinate Class
with respect to Class A, with respect to Class B only, the sum of (a) the
positive difference, if any, between (x) the Class B Subordinated Payment and
(y) the amount of Class B Available Finance Charge Collections for the related
Due Period and (b) the amount by which the Class A Cumulative Investor
Charged-Off Amount is reduced by way of a reallocation of Class B Investor
Interest pursuant to Section 9.

      "Class Investor Interest" shall mean, with respect to any Class for any
Distribution Date, an amount equal to the Class Invested Amount for such Class
for such Distribution Date minus, if applicable, the aggregate amount on deposit
in the Series Principal Funding Account for the benefit of such Class in respect
of Principal Collections.

      "Class Maximum Rate," if applicable, shall have the meaning set forth in
the Series Term Sheet with respect to any Class or Subclass.

      "Class Modified Required Amount" with respect to any Class on any
Distribution Date, shall mean the Class Required Amount for such Distribution
Date minus the sum of all accrued but unpaid Class Monthly Servicing Fees.

      "Class Monthly Deficiency Amount" with respect to any Class on any
Distribution Date, shall have the meaning set forth in Section 10(a)(2)(A). The
Class Monthly Deficiency Amount for each Class initially shall be zero.

      "Class Monthly Servicing Fee" with respect to any Class for any
Distribution Date, shall mean an amount equal to the product of (x) a fraction
the numerator of which shall be the Class Investor Interest and the denominator
of which shall be the Series Investor Interest, in each case on the first day of
the related Due Period and (y) the amount of the Investor Servicing Fee for the
related Due Period.

      "Class Percentage" shall mean, with respect to any Class with respect to
any Distribution Date or any Trust Distribution Date, as applicable:

            (a) when used with respect to the Charged-Off Amount, the percentage
      equivalent of a fraction the numerator of which shall be the amount of the
      Class Investor Interest and the denominator of which shall be the greater
      of (i) the amount of Principal Receivables in the Trust and (ii) the
      Aggregate Investor Interest, in each case on the first day of the related
      Due Period; or

            (b) when used with respect to Principal Collections prior to the
      occurrence of a Fixed Principal Allocation Event, the percentage
      equivalent of a fraction the numerator of which shall be the amount of the
      Class Investor Interest on the first day of the related Due Period and the
      denominator of which shall be the greater of (i) the amount of Principal
      Receivables in the Trust on the first day of the related Due Period and
      (ii) the sum of the numerators used in calculating the components

                                       7
<PAGE>   18
      of the Series Percentage with respect to Principal Collections for each
      Series then outstanding (including the Series established hereby) as of
      such Distribution Date or Trust Distribution Date, as applicable; or

            (c) when used with respect to Principal Collections on and after the
      occurrence of a Fixed Principal Allocation Event, the percentage
      equivalent of a fraction, the numerator of which shall be the amount of
      the Class Investor Interest on the last day of the Due Period prior to the
      occurrence of a Fixed Principal Allocation Event and the denominator of
      which shall be the greater of (i) the amount of Principal Receivables in
      the Trust on the first day of the related Due Period and (ii) the sum of
      the numerators used in calculating the components of the Series Percentage
      with respect to Principal Collections for each Series then outstanding
      (including the Series established hereby) as of such Distribution Date or
      Trust Distribution Date, as applicable; provided, however, that from and
      after the Fully Funded Date, if any, the Class Percentage with respect to
      Principal Collections will equal zero; or

            (d) when used with respect to Finance Charge Collections during the
      Revolving Period and the Accumulation Period or the Controlled Liquidation
      Period, as applicable, and provided that an Effective Alternative Credit
      Support Election has been made, during the Early Accumulation Period or
      the Amortization Period, the percentage equivalent of a fraction the
      numerator of which shall be the amount of the Class Investor Interest on
      the first day of the related Due Period and the denominator of which shall
      be the greater of (i) the amount of Principal Receivables in the Trust on
      the first day of the related Due Period and (ii) the sum of the numerators
      used in calculating the components of the Series Percentage with respect
      to Finance Charge Collections for each Series then outstanding (including
      the Series established hereby) as of such Distribution Date or Trust
      Distribution Date, as applicable; provided, however, that from and after
      the Fully Funded Date, if any, the Class Percentage with respect to
      Finance Charge Collections will equal zero; or

            (e) when used with respect to Finance Charge Collections during the
      Early Accumulation Period or the Amortization Period, provided that an
      Effective Alternative Credit Support Election has not been made, the
      percentage equivalent of a fraction the numerator of which shall be the
      amount of the Class Investor Interest on the last day of the Due Period
      prior to the occurrence of an Early Accumulation Event or an Amortization
      Event, and the denominator of which shall be the greater of (i) the amount
      of Principal Receivables in the Trust on the first day of the related Due
      Period and (ii) the sum of the numerators used in calculating the
      components of the Series Percentage with respect to Finance Charge
      Collections for each Series then outstanding (including the Series
      established hereby) as of such Distribution Date or Trust Distribution
      Date, as applicable; provided, however, that from and after the Fully
      Funded Date, if any, the Class Percentage with respect to Finance Charge
      Collections will equal zero.

                                       8
<PAGE>   19
      "Class Principal Collections" shall mean, with respect to any Class with
respect to any day or any Distribution Date or Trust Distribution Date, as
applicable, an amount equal to the product of (x) the Class Percentage with
respect to Principal Collections for the related Distribution Date and (y) the
amount of Principal Collections for such day or for the related Due Period, as
applicable.

      "Class Required Amount" with respect to any Class on any Distribution
Date, shall mean the sum of (i) the product of (a) the Class Invested Amount
with respect to such Class for such Distribution Date and (b) a fraction, the
numerator of which is the Certificate Rate for such Class, and the denominator
of which is (x) if the relevant Certificate Rate is to be calculated on the
basis of the actual number of days elapsed and a 360-day year, (A) if each
Interest Payment Date is also a Distribution Date, 360 divided by the actual
number of days from and including the immediately preceding Distribution Date
(or in the case of the first Distribution Date, from and including the Series
Closing Date) to but excluding the current Distribution Date or (B) if each
Interest Payment Date is not also a Distribution Date, 360 divided by the actual
number of days from and including the immediately preceding Interest Calculation
Date (or in the case of the first Distribution Date, from and including the
Series Closing Date) to but excluding the Interest Calculation Date following
the current Distribution Date or (y) if the relevant Certificate Rate is to be
calculated on the basis of a 360-day year of twelve 30-day months, twelve (or in
the case of the first Distribution Date, 360 divided by the number of days from
and including the Series Closing Date to but excluding the current Distribution
Date (if each Interest Payment Date is also a Distribution Date) or the Interest
Calculation Date following the current Distribution Date (if each Interest
Payment Date is not also a Distribution Date), assuming each month has 30 days),
(ii) the Class Monthly Deficiency Amount on the immediately preceding
Distribution Date, (iii) the Class Deficiency Amount on the immediately
preceding Payment Date multiplied by a fraction the numerator of which is the
weighted average of the Certificate Rates or of the Class Weighted Average
Certificate Rates, as applicable, for such Class for each Due Period subsequent
to the immediately preceding Payment Date plus 2.00% per annum and the
denominator of which is (x) if the relevant Certificate Rate is to be calculated
on the basis of the actual number of days elapsed and a 360-day year, 360
divided by the actual number of days from and including the immediately
preceding Distribution Date to but excluding the current Distribution Date or
(y) if the relevant Certificate Rate is to be calculated on the basis of a
360-day year of twelve 30-day months, twelve, (iv) if on the immediately
preceding Distribution Date a Reimbursed Loss Event occurred, the sum of (A) the
Reimbursed Loss Interest for each previous Distribution Date since the last
Distribution Date on which the aggregate amount of unreimbursed Investor Losses
for such Class equaled zero, (B) the Reimbursed Loss Interest Gross-up Amount
for each previous Distribution Date since the last Distribution Date on which
the aggregate amount of unreimbursed Investor Losses for such Class equaled zero
and (C) for any Distribution Date following the Distribution Date immediately
following the Reimbursed Loss Event to and including the next Payment Date, the
Reimbursed Loss Interest Gross-up Amount for such Distribution Date and (v) the
sum of all accrued but unpaid Class Monthly Servicing Fees.

      "Class Required Amount Shortfall" with respect to any Class on any
Distribution Date, shall have the meaning set forth in Section 9.

                                       9
<PAGE>   20
      "Class Subordinated Payment" shall mean, if there is a Subordinate Class
with respect to Class A, with respect to any Distribution Date, the amount, if
any, withheld from Class B Available Collections and paid to or for the benefit
of the Class A Certificateholders pursuant to Section 9 on such Distribution
Date.

      "Class Weighted Average Certificate Rate," if applicable, shall mean, for
any Class composed of two or more Subclasses, for any Distribution Date, the
percentage equivalent of a fraction the numerator of which is the sum of, for
each Subclass of such Class, the product of the Class Invested Amount for such
Subclass and the Certificate Rate for such Subclass for such Distribution Date,
and the denominator of which is the Class Invested Amount for such Class.

      "Class Yield Collections" shall mean, with respect to any Class, with
respect to any day or any Distribution Date, as applicable, an amount equal to
the product of the Class Yield Percentage for such Class and the amount of
Series Yield Collections for such day or the related Due Period, as applicable.

      "Class Yield Percentage" shall mean, with respect to any Class on any
Distribution Date (i) during the Revolving Period and the Accumulation Period or
the Controlled Liquidation Period, as applicable, and, provided that an
Effective Alternative Credit Support Election has been made, during the Early
Accumulation Period or the Amortization Period, the percentage equivalent of a
fraction the numerator of which shall be the Class Investor Interest for such
Class and the denominator of which shall be the Series Investor Interest, in
each case as of the first day of the related Due Period; or (ii) during the
Early Accumulation Period or the Amortization Period, provided that an Effective
Alternative Credit Support Election has not been made, the percentage equivalent
of a fraction the numerator of which shall be the amount of the Class Investor
Interest on the last day of the Due Period prior to the occurrence of an Early
Accumulation Event or Amortization Event and the denominator of which shall be
the amount of the Series Investor Interest on the last day of the Due Period
prior to the occurrence of an Early Accumulation Event or Amortization Event.

      "Commercial Paper Determination Date," if applicable, shall have the
meaning set forth in the Series Term Sheet.

      "Commercial Paper Rate," if applicable, shall mean, with respect to any
Commercial Paper Determination Date, the rate equal to the Money Market Yield on
such Commercial Paper Determination Date of the rate for commercial paper having
a maturity of 30 days as published by the Board of Governors of the Federal
Reserve System in "Statistical Release H.15 (519), Selected Interest Rates," or
any successor publication, under the heading "Commercial Paper." In the event
that such rate is not published on such date, then the Commercial Paper Rate
will be the Money Market Yield on such date of the rate for Commercial Paper
having a maturity of 30 days as published by the Federal Reserve Bank of New
York in the daily statistical release "Composite 3:30 p.m. Quotations for U.S.
Government Securities" ("Composite Quotations") under the heading "Commercial
Paper." If on such date the rate for commercial paper is not yet published in
either H.15 (519) or Composite Quotations, the Commercial Paper Rate for such
date shall be calculated by the Trustee and shall be the Money Market Yield of
the arithmetic mean (rounded to the nearest one-hundredth of a percent, with
five hundred one-thousandths of a percent

                                       10
<PAGE>   21
rounded upward) of the offered rates, as of 11:00 a.m., New York City time, of
three leading dealers of commercial paper in New York City selected by the
Trustee on such date, for commercial paper having a maturity of 30 days placed
for an industrial issuer whose bond rating is "AA" or the equivalent, from
either Rating Agency. In the event that such rates are not available on such
date, then the Commercial Paper Rate shall be the Money Market Yield of the rate
for commercial paper so provided in a comparable source. The Commercial Paper
Rate shall be determined by the Trustee.

      "Controlled Accumulation Amount" shall have the meaning set forth in the
Series Term Sheet.

      "Controlled Liquidation Amount," if applicable, with respect to any
Distribution Date related to the Controlled Liquidation Period, the Accumulation
Period or the Early Accumulation Period shall mean, if applicable, an amount
equal to the sum of the Liquidation Amount and any existing Deficit Liquidation
Amount; provided, however, that the Controlled Liquidation Amount shall not be
less than zero and shall not exceed an amount equal to the Series Invested
Amount.

      "Controlled Liquidation Period," if applicable, shall have the meaning set
forth in the Series Term Sheet.

      "Credit Enhancement" shall mean any credit enhancement obtained by the
Master Servicer in accordance with Section 11.

      "Credit Enhancement Account," if applicable, shall have the meaning set
forth in Section 8.

      "Credit Enhancement Agreement" shall mean the Agreement among the Sellers,
the Master Servicer, the Trustee and the Credit Enhancement Provider with
respect to the Credit Enhancement.

      "Credit Enhancement Drawing" shall mean any drawing made under the Credit
Enhancement.

      "Credit Enhancement Fee" shall mean, on any Distribution Date, the sum of
all fees and interest payable to the Credit Enhancement Provider or the Trustee
as administrator of the Credit Enhancement for the related Due Period pursuant
to the Credit Enhancement Agreement.

      "Credit Enhancement Provider" shall have the meaning set forth in the
Series Term Sheet.

      "Deficit Accumulation Amount" shall mean, with respect to the first
Distribution Date of the Accumulation Period, zero, and with respect to any
other Distribution Date of the Accumulation Period, the amount, if any, by which
the amount deposited into the Series Principal Funding Account on the preceding
Distribution Date is less than the Controlled Accumulation Amount for such
preceding Distribution Date.

      "Deficit Liquidation Amount" shall mean, with respect to the first
Distribution Date relating to the Due Period commencing on the Principal
Commencement Date, zero, and with

                                       11
<PAGE>   22
respect to any subsequent Distribution Date, the amount, if any, by which the
amount of Certificate Principal paid to the Investor Certificateholders on the
preceding Distribution Date is less than the Controlled Liquidation Amount for
such preceding Distribution Date.

      "Distribution Date" shall have the meaning set forth in the Series Term
Sheet.

      "Dollars" or "U.S. $" or "$" shall mean the lawful currency of the United
States of America.

      "Drawing Date" shall mean the first Business Day preceding each
Distribution Date.

      "Early Accumulation Commencement Date," if applicable, shall mean the date
on which an Early Accumulation Event is deemed to occur.

      "Early Accumulation Event," if applicable, shall mean any event specified
in Section 21 hereof.

      "Early Accumulation Period," if applicable, shall have the meaning set
forth in the Series Term Sheet.

      "Effective Alternative Credit Support Election" shall have the meaning
specified in Section 12.

      "Estimated Investment Shortfall," if applicable, shall have the meaning
set forth in the Series Term Sheet.

      "Estimated Principal Distribution Amount," if applicable, shall mean, with
respect to any date of determination during the Early Accumulation Period, an
amount equal to the Series Principal Collections for the prior Distribution
Date; provided, however, that such amount shall not exceed the Series Investor
Interest as of such prior Distribution Date.

      "Estimated Yield," if applicable, shall have the meaning specified in the
Series Term Sheet.

      "Excess Income" on any Distribution Date shall mean an amount equal to the
excess, if any, of (a) interest and other income (net of investment expenses) on
such Distribution Date with respect to the funds on deposit in the Series
Principal Funding Account during the related Interest Period over (b) the amount
on deposit in the Series Principal Funding Account in respect of Certificate
Principal during such Interest Period multiplied by a fraction, the numerator of
which is the Certificate Rate or the Class Weighted Average Certificate Rate, as
applicable, for the Class for whose benefit the amounts on deposit in the Series
Principal Funding Account are held during such Interest Period and the
denominator of which is (x) if the relevant Certificate Rate is to be calculated
on the basis of the actual number of days elapsed and a 360-day year, 360
divided by the actual number of days from and including the immediately
preceding Distribution Date to but excluding the current Distribution Date or
(y) if the relevant Certificate Rate is to be calculated on the basis of a
360-day year of twelve 30-day months, twelve.

                                       12
<PAGE>   23
      "Fixed Principal Allocation Event" shall mean the earliest of (a) the
beginning of the Due Period immediately following the Due Period related to the
first Distribution Date during the Controlled Liquidation Period or the
Accumulation Period, as applicable, with respect to the Series established
hereby on which the Series Available Principal Amount is less than zero; (b) the
date on which an Early Accumulation Event or an Amortization Event with respect
to the Series established hereby occurs; and (c) a date selected by the Master
Servicer, if any. If the Master Servicer establishes a date for a Fixed
Principal Allocation Event pursuant to clause (c) of the preceding sentence, the
Master Servicer shall provide notification of such date to Discover Bank on
behalf of the Holder of the Seller Certificate, the Trustee, the Credit
Enhancement Provider and the Rating Agencies no later than two Business Days
prior to such date.

      "Fully Funded Date," if applicable, shall mean the first Distribution Date
on which the amount of funds on deposit in the Series Principal Funding Account
(after giving effect to all deposits made on such date pursuant to Section 9)
equals the Series Invested Amount for such Distribution Date (prior to any
payments of principal on such date pursuant to Section 10); provided, however,
that the Fully Funded Date shall only occur during the Early Accumulation
Period.

      "Funded Credit Enhancement" shall mean any Credit Enhancement that
consists of funds on deposit in one or more segregated trust accounts in the
corporate trust department of an office or branch of the Trustee or a Qualified
Institution for the benefit of the Investor Certificateholders of the Series
established hereby, including, without limitation, a reserve account or a cash
collateral account.

      "Group Available Principal Amount" shall mean, with respect to each
Distribution Date, the amount remaining on deposit in the Group Principal
Collections Reallocation Account on such Distribution Date after all withdrawals
have been made from such account for the benefit of any Series in the same Group
as the Series established hereby (including the Series established hereby), but
before such amount is withdrawn from the Group Principal Collections
Reallocation Account and deposited into the Collections Account pursuant to
Section 9(b)(35)).

      "Group Buffer Amount," if applicable, shall have the meaning set forth in
the Series Term Sheet.

      "Group Excess Spread" shall mean, for any Distribution Date, the sum of
the Series Excess Spreads for each Series (including the Series established
hereby) that is a member of the same Group as the Series established hereby, in
each case for such Distribution Date.

      "Group Finance Charge Collections Reallocation Account" shall have the
meaning specified in Section 8.

      "Group Principal Allocation Event" shall mean the first Distribution Date,
if any, on which (i) the sum of the amount of Series Principal Collections less
the amount of Series Yield Collections for each Series that is a member of the
same Group as the Series established hereby (including the Series established
hereby) that is not in its Early Accumulation Period or its

                                       13
<PAGE>   24
Amortization Period is less than (ii) the Group Required Principal Amount for
such Distribution Date.

      "Group Principal Collections Reallocation Account" shall have the meaning
specified in Section 8.

      "Group Required Principal Amount" shall mean, with respect to the Group of
which the Series established hereby is a member, for any Distribution Date, the
Series Required Principal Amount for such Distribution Date plus, for each
Series that is a member of such Group, the Series Required Principal Amount for
such Series for such Distribution Date.

      "Initial Credit Enhancement" shall mean the Credit Enhancement first
obtained by the Master Servicer pursuant to Section 11.

      "Initial Subordinated Amount," if applicable, shall have the meaning set
forth in the Series Term Sheet.

      "Interest Accrual Period" shall mean, with respect to any Interest Payment
Date, the period from and including the Interest Payment Date immediately
preceding such Interest Payment Date (or, in the case of the first Interest
Payment Date, from and including the Series Closing Date) to but excluding such
Interest Payment Date.

      "Interest Calculation Date," if applicable, shall have the meaning set
forth in the Series Term Sheet.

      "Interest Payment Date" shall mean each date designated as such in the
Series Term Sheet.

      "Interest Period" shall mean each period from and including a given
Distribution Date to but excluding the next following Distribution Date
commencing with the earlier to occur of (i) the first Distribution Date of the
Early Accumulation Period or (ii) the first Distribution Date of the
Accumulation Period.

      "Interest Rate Cap Provider," if any, shall mean the entity listed as the
Interest Rate Cap Provider in the Series Term Sheet, in its capacity as obligor
under the Class Interest Rate Caps, or if any Replacement Class Interest Rate
Caps or Qualified Substitute Cap Arrangements are obtained pursuant to Section
15, the obligor with respect to such Replacement Class Interest Rate Caps or
Qualified Substitute Cap Arrangements.

      "Interest Rate Swap Account" shall have the meaning specified in Section
8.

      "Interest Rate Swap Counterparty," if applicable, shall have the meaning
set forth in the Series Term Sheet.

      "Investor Accounts" shall mean, in addition to Investor Accounts
established pursuant to the Pooling and Servicing Agreement, the Series
Collections Account, the Series Principal Collections Account, the Series
Principal Funding Account, the Series Interest Funding Account,

                                       14
<PAGE>   25
the Series Distribution Account, the Group Finance Charge Collections
Reallocation Account and the Group Principal Collections Reallocation Account.

      "Investor Charge-Off Loss" shall have the meaning set forth in Section
13(b).

      "Investor Loss" with respect to each Class, shall mean (i) the amount of
any reduction in the Class Invested Amount with respect to such Class pursuant
to Section 13(b), (ii) in the event the Receivables are sold pursuant to Section
12.01(b) of the Pooling and Servicing Agreement, the amount, if any, by which
the Class Investor Interest (determined immediately prior to such sale) exceeds
the product of (x) a fraction, the numerator of which is the Class Investor
Interest and the denominator of which is the Aggregate Investor Interest and (y)
the net proceeds of such sale and (iii) in the event Receivables are sold
pursuant to Section 12.02(c) of the Pooling and Servicing Agreement, the amount,
if any, by which the Class Investor Interest (determined immediately prior to
such sale) exceeds the product of (x) a fraction, the numerator of which is the
Class Investor Interest and the denominator of which is the Series Investor
Interest and (y) the net proceeds of such sale.

      "Investor Servicing Fee" shall mean, with respect to any Distribution
Date, an amount equal to the product of the Investor Servicing Fee Percentage
and the Series Investor Interest on the first day of the Due Period related to
such Distribution Date (or in the case of the first Distribution Date for the
Series established hereby, the Series Initial Investor Interest).

      "Investor Servicing Fee Percentage" shall mean the percentage identified
as such in the Series Term Sheet.

      "LIBOR," if applicable, shall mean, with respect to any LIBOR
Determination Date, the rate for deposits in United States dollars with a
duration comparable to the relevant Interest Accrual Period which appears on
Telerate Page 3750 as of 11:00 a.m., London time, on such day. If such rate does
not appear on Telerate Page 3750, the rate will be determined by the Trustee on
the basis of the rates at which deposits in United States dollars are offered by
major banks in the London interbank market, selected by the Trustee, at
approximately 11:00 a.m., London time, on such day to prime banks in the London
interbank market with a duration comparable to the relevant Interest Accrual
Period commencing on that day. The Trustee will request the principal London
office of at least four banks to provide a quotation of its rate. If at least
two such quotations are provided, the rate will be the arithmetic mean of the
quotations. If fewer than two quotations are provided as requested, the rate for
that day will be the arithmetic mean of the rates quoted by four major banks in
New York City, selected by the Trustee, at approximately 11:00 a.m., New York
City time, on that day for loans in United States dollars to leading European
banks with a duration comparable to the relevant Interest Accrual Period
commencing on that day.

      "LIBOR Business Day," if applicable, shall mean a day other than a
Saturday or a Sunday on which banking institutions in the City of London,
England and in New York, New York are not required or authorized by law to be
closed.

                                       15
<PAGE>   26
      "LIBOR Determination Date," if applicable, shall have the meaning set
forth in the Series Term Sheet.

      "Liquidation Amount," if applicable, shall have the meaning set forth in
the Series Term Sheet.

      "Maximum Class A Credit Enhancement Amount," if applicable, shall have the
meaning set forth in the Series Term Sheet.

      "Maximum Class B Credit Enhancement Amount," if applicable, shall have the
meaning set forth in the Series Term Sheet.

      "Maximum Shared Credit Enhancement Amount," if applicable, shall have the
meaning set forth in the Series Term Sheet.

      "Money Market Yield" shall mean a yield (expressed as a percentage rounded
to the nearest one-hundredth of a percent, with five hundred one-thousandths of
a percent rounded upwards) calculated in accordance with the following formula:

            Money Market Yield            =     D x 360
                                                -------     x    100
                                          360 - (D x M)

where "D" refers to the per annum rate for commercial paper quoted on a bank
discount basis and expressed as a decimal, and "M" refers to the actual number
of days in the related Interest Accrual Period.

      "Monthly Amortization Rate," if applicable, shall have the meaning set
forth in the Series Term Sheet.

      "Monthly Swap Deposit," if applicable, shall have the meaning set forth in
the Series Term Sheet.

      "Net Swap Payment," if applicable, shall mean, with respect to any Class
that is subject to a Class Interest Rate Swap, (x) on any Interest Payment Date
prior to the early termination of the Class Interest Rate Swap, the positive
difference, if any, between (i) the amount owed by the Trust to the Interest
Rate Swap Counterparty under the Class Interest Rate Swap on such Interest
Payment Date and (ii) the amount owed by the Interest Rate Swap Counterparty to
the Trust under the Class Interest Rate Swap on such Interest Payment Date, and
(y) on any Distribution Date in any calendar month following the calendar month
in which an early termination of the Class Interest Rate Swap occurred, the
unpaid portion of any termination payment owed by the Trust to the Interest Rate
Swap Counterparty in accordance with the terms of the Class Interest Rate Swap.

      "Net Swap Receipt," if applicable, shall mean, with respect to any Class
that is subject to a Class Interest Rate Swap, (x) on any Interest Payment Date
prior to the early termination of the Class Interest Rate Swap, the positive
difference, if any, between (i) the amount owed by the Interest Rate Swap
Counterparty to the Trust under the Class Interest Rate Swap on such Interest

                                       16
<PAGE>   27
Payment Date and (ii) the amount owed by the Trust to the Interest Rate Swap
Counterparty under the Class Interest Rate Swap on such Interest Payment Date,
and (y) on any Distribution Date following an early termination of the Class
Interest Rate Swap, the amount of any termination payment paid by the Interest
Rate Swap Counterparty on or prior to such Distribution Date and after the
previous Distribution Date.

      "Non-U.S. Holder," shall mean any person who, as to the United States, is
a non-resident alien individual, a foreign corporation, a foreign estate, a
foreign trust or a foreign partnership, as such terms are defined in the
Internal Revenue Code of 1986, as amended.

      "Payment Date" shall mean any Interest Payment Date and any Class Expected
Final Payment Date.

      "Portfolio Yield" shall mean, with respect to any Due Period, the
annualized percentage equivalent of a fraction, the numerator of which shall be
the sum of (i) the amount of Finance Charge Collections received during such Due
Period, (ii) the amount of Series Yield Collections for each Series then
outstanding for such Due Period and (iii) the amount of Series Additional Funds
for each Series then outstanding for such Due Period, and the denominator of
which shall be the total amount of Principal Receivables in the Trust as of the
first day of such Due Period.

      "Prepayment Calculation Table," if applicable, shall have the meaning set
forth in the Series Term Sheet.

      "Prepayment Determination Date," if applicable, shall have the meaning set
forth in the Series Term Sheet.

      "Principal Commencement Date" shall mean the date designated as such in
the Series Term Sheet.

      "Principal Distribution Amount" shall mean, with respect to any
Distribution Date occurring in (i) the Accumulation Period, the Controlled
Accumulation Amount, (ii) the Controlled Liquidation Period, the Controlled
Liquidation Amount, (iii) the Early Accumulation Period, the Series Investor
Interest, or (iv) in the Amortization Period, the Series Investor Interest.

      "Principal Distribution Amount Shortfall" with respect to any Distribution
Date in the Accumulation Period, the Controlled Liquidation Period, the Early
Accumulation Period or the Amortization Period, as applicable, shall have the
meaning set forth in Section 9.

      "Principal Payment Date" shall mean, if applicable, each date designated
as such in the Series Term Sheet.

      "Qualified Credit Enhancement Provider" shall mean, (i) if the Credit
Enhancement is not Funded Credit Enhancement, an institution that meets the
Qualified Credit Enhancement Provider Rating Requirements established by each
Rating Agency, which requirements are set forth in the Series Term Sheet if the
Initial Credit Enhancement is not Funded Credit Enhancement, or (ii) if the
Initial Credit Enhancement is Funded Credit Enhancement, an institution that
meets the

                                       17
<PAGE>   28
Qualified Credit Enhancement Provider Rating Requirements established by each
Rating Agency, which requirements will be established by the Rating Agencies at
the time, if any, that the Master Servicer elects to replace the Initial Credit
Enhancement with Credit Enhancement that is not Funded Credit Enhancement (or,
in either case, such lesser requirements as the applicable Rating Agency shall
allow); provided, however, that in the event the Master Servicer elects to
obtain Credit Enhancement that is not Funded Credit Enhancement and is unable
after the exercise of its best efforts to obtain from a Qualified Credit
Enhancement Provider as so defined such Credit Enhancement with respect to which
the representations set forth in Section 11(a) shall be true, the term
"Qualified Credit Enhancement Provider" shall mean a Person who satisfies such
requirements except that its long-term unsecured debt rating by any nationally
recognized rating agency may be lower than that set forth in such requirements,
but shall not be lower than the highest credit rating of any Person who
otherwise satisfies said requirements and from whom the Master Servicer is able
to obtain such a Credit Enhancement.

      "Qualified Substitute Cap Arrangement," if any, shall have the meaning
specified in Section 15.

      "Reimbursed Loss Event" shall mean, with respect to each Class for any
Distribution Date, the occurrence of the reimbursement of Investor Losses
pursuant to Section 13(c) with respect to such Class on such Distribution Date
such that the aggregate amount of unreimbursed Investor Losses for such Class is
reduced to zero.

      "Reimbursed Loss Interest" shall mean, for any Class for any Distribution
Date, an amount equal to the product of (i) the aggregate amount of Investor
Losses that have not been reimbursed pursuant to Section 13(c) prior to the
commencement of the related Due Period and (ii) a fraction the numerator of
which is the Certificate Rate or the Class Weighted Average Certificate Rate, as
applicable, for such Class for the related Due Period and the denominator of
which is (x) if the relevant Certificate Rate is to be calculated on the basis
of the actual number of days elapsed and a 360-day year, (A) if each Interest
Payment Date is also a Distribution Date, 360 divided by the actual number of
days from and including the immediately preceding Distribution Date to but
excluding the current Distribution Date or (B) if each Interest Payment Date is
not also a Distribution Date, 360 divided by the actual number of days from and
including the Interest Calculation Date in the preceding calendar month to but
excluding the Interest Calculation Date following the current Distribution Date
or (y) if the relevant Certificate Rate is to be calculated on the basis of a
360-day year of twelve 30-day months, twelve.

      "Reimbursed Loss Interest Gross-up Amount" shall mean, for any Class for
any Distribution Date, an amount equal to the product of (i) the positive
difference, if any, between the Class Alternative Deficiency Amount for the
immediately preceding Payment Date and the actual Class Deficiency Amount for
the immediately preceding Payment Date and (ii) a fraction the numerator of
which is the Certificate Rate or the Class Weighted Average Certificate Rate, as
applicable, for such Class for the related Due Period and the denominator of
which is (x) if the relevant Certificate Rate is to be calculated on the basis
of the actual number of days elapsed and a 360-day year, (A) if each Interest
Payment Date is also a Distribution Date, 360 divided by the actual number of
days from and including the immediately preceding Distribution Date to but
excluding the current Distribution Date or (B) if each Interest Payment Date is
not also a

                                       18
<PAGE>   29
Distribution Date, 360 divided by the actual number of days from and including
the Interest Calculation Date in the preceding calendar month to but excluding
the Interest Calculation Date following the current Distribution Date or (y) if
the relevant Certificate Rate is to be calculated on the basis of a 360-day year
of twelve 30-day months, twelve.

      "Replacement Class Interest Rate Cap," if any, shall mean an interest rate
cap agreement or other interest rate protection having substantially the same
terms and conditions as the Class Interest Rate Cap that it replaces, and
otherwise satisfying the conditions set forth in Section 15.

      "Required Daily Deposit" shall mean, if applicable, with respect to each
Servicer, an amount equal to:

            (a)   during the Revolving Period and the Accumulation Period or the
                  Controlled Liquidation Period, as applicable, the sum of

                  (x)(1) during the Revolving Period, an amount equal to the sum
                  of (i) the sum of the Class Finance Charge Collections and the
                  Class Yield Collections for each Class for such day and (ii)
                  the amount of Class B Principal Collections for such day;
                  minus the sum of the Class B Yield Collections for such day
                  and all accrued but unfunded Class A Monthly Servicing Fees;
                  or

                  (2) during the Accumulation Period or the Controlled
                  Liquidation Period, as applicable, an amount equal to the sum
                  of (i) the amount set forth in clause (1) above and (ii)(A)
                  until the aggregate amount deposited during such Due Period
                  pursuant to this clause (ii) equals the Controlled
                  Accumulation Amount or the Controlled Liquidation Amount, as
                  applicable, for the related Distribution Date, the amount of
                  Class A Principal Collections for such day less the amount of
                  Class A Yield Collections for such day and (B) thereafter,
                  zero provided, however, that with respect to any day on which
                  the Controlled Accumulation Amount or the Controlled
                  Liquidation Amount, as applicable, for the related
                  Distribution Date can not be determined, the aggregate amount
                  to be deposited for such Due Period shall be the Controlled
                  Accumulation Amount or the Controlled Liquidation Amount, as
                  applicable, for the Distribution Date preceding the related
                  Distribution Date; plus

                  (y)  the positive difference, if any, between

                        (1) the product of the Class A Percentage for the
                  related Distribution Date with respect to Principal
                  Collections and the amount of Principal Collections received
                  during the Due Period through and including such day, less the
                  product of the Class A Yield Percentage and the amount of
                  Series Yield Collections received during the Due Period
                  through and including such day, and less any amounts deposited
                  into the Collections Account during the Due Period through and
                  including such day pursuant to

                                       19
<PAGE>   30
                  clause (x)(2)(ii)(A) above or previously deposited during such
                  Due Period pursuant to this clause (y) and

                        (2) the positive difference, if any, between (i) an
                  amount equal to (A) the aggregate amount of Principal
                  Receivables in the Trust as of such day multiplied by a
                  fraction the numerator of which shall be the Series Initial
                  Investor Interest and the denominator of which shall be sum of
                  the Series Initial Investor Interest for each Series then
                  outstanding minus (B) the Series Investor Interest as of the
                  end of the immediately preceding Due Period (after giving
                  effect to payments of principal made or to be made on the
                  related Distribution Date) and (ii) an amount equal to the
                  positive difference between the Series Minimum Principal
                  Receivables Balance and the Series Investor Interest;
                  provided, however, that any calculation under this paragraph
                  (y) that results in a number less than zero shall be treated
                  as zero; or

            (b)   during the Early Accumulation Period and the Amortization
                  Period, an amount equal to the sum of the Series Finance
                  Charge Collections and the Series Principal Collections for
                  the Series established hereby for such day minus all accrued
                  but unfunded Class A Monthly Servicing Fees; and

multiplied, in each case, by a fraction the numerator of which shall be the
aggregate amount of Principal Receivables in the Trust that are serviced by such
Servicer and the denominator of which shall be the aggregate amount of Principal
Receivables in the Trust; provided, however, that if any Servicer is unable to
make the calculations set forth above on any day, the Required Daily Deposit for
such Servicer for such day shall be equal to all the Collections received by
such Servicer on such day.

      Notwithstanding the foregoing, (i) upon the occurrence of any circumstance
described in Section 10.02(d), (e) or (f) of the Pooling and Servicing Agreement
with respect to any Servicer, the Required Daily Deposit for any Series then
outstanding shall equal the amount described in paragraph (b) above for such
Servicer and (ii) a Servicer may use Collections received by it for its own
account prior to the applicable Distribution Date as permitted by Sections
3.03(b) and 4.03(b) of the Pooling and Servicing Agreement.

      "Revolving Period" shall have the meaning set forth in the Series Term
Sheet.

      "Series Additional Funds," if applicable, shall mean, for any Distribution
Date, the Additional Funds deposited into the Series Collections Account for the
Series established hereby on such Distribution Date.

      "Series Additional Investor Funds," if applicable, shall mean, for any
Distribution Date, the Series Additional Funds, if any, that are not applied to
payment of the Supplemental Servicing Fee pursuant to Section 14.

                                       20
<PAGE>   31
      "Series Available Principal Amount" shall mean, for any Distribution Date,
if a Group Principal Allocation Event has occurred, an amount calculated as
follows: For each Series that is a member of the same Group as the Series
established hereby (including the Series established hereby), seriatim,
beginning with the Series with the largest Series Investor Interest for such
Distribution Date (and if more than one Series has the same Series Investor
Interest on such Distribution Date, beginning with whichever of such Series has
the longest time remaining until its latest Class Expected Final Payment Date
or, if none, the last scheduled day of its Accumulation Period (assuming that no
Early Accumulation Event or Amortization Event occurs with respect to such
Series)), an amount equal to (x) the Group Available Principal Amount less (y)
the difference between the Series Required Principal Amount, if any, and the
Principal Distribution Amount for such Series for such Distribution Date, if
any, that was funded on such Distribution Date (including any portion of such
amount that was funded by amounts withdrawn from the Group Principal Collections
Reallocation Account pursuant to Section 9(b)(21), Section 9(b)(34), 9(b)(35) or
a substantially similar provision). For purposes of calculating the Series
Available Principal Amount for each other such Series, the Group Available
Principal Amount shall be reduced by the amount calculated in clause (y) for the
prior Series for which the Series Available Principal Amount was calculated.

      "Series Buffer Amount," if applicable, shall have the meaning set forth in
the Series Term Sheet.

      "Series Closing Date" shall mean the date designated as such in the Series
Term Sheet.

      "Series Collections Account" shall have the meaning specified in Section
8.

      "Series Cut-Off Date" shall mean the date designated as such in the Series
Term Sheet.

      "Series Distribution Account" shall have the meaning specified in Section
8.

      "Series Excess Servicing" shall mean, as of any Distribution Date, the sum
of the amounts of Class Excess Servicing for each Class of the Series
established hereby, as such amount is modified pursuant to Section 9.

      "Series Excess Spread" shall mean, for any Distribution Date, an amount
equal to (a) the sum of Series Finance Charge Collections, Series Yield
Collections, Series Additional Investor Funds and any Class Investment Income
for any Class of the Series established hereby minus (b) the sum of (i) with
respect to each Class, the product of (A) the Class Invested Amount for such
Class for such Distribution Date and (B) a fraction, the numerator of which is
the Certificate Rate for that Class, and the denominator of which is (x) if the
relevant Certificate Rate is to be calculated on the basis of the actual number
of days elapsed and a 360-day year, (A) if each Interest Payment Date is also a
Distribution Date, 360 divided by the actual number of days from and including
the immediately preceding Distribution Date (or in the case of the first
Distribution Date, from and including the Series Closing Date) to but excluding
the current Distribution Date or (B) if each Interest Payment Date is not also a
Distribution Date, 360 divided by the actual number of days from and including
the immediately preceding Interest Calculation Date (or, in the case of the
first Distribution Date, from and including the Series Closing Date) to but
excluding

                                       21
<PAGE>   32
the Interest Calculation Date following the current Distribution Date or (y) if
the relevant Certificate Rate is to be calculated on the basis of a 360-day year
of twelve 30-day months, twelve (or in the case of the first Distribution Date,
360 divided by the number of days from and including the Series Closing Date to
but excluding the current Distribution Date (if each Interest Payment Date is
also a Distribution Date) or the Interest Calculation Date following the current
Distribution Date (if each Interest Payment Date is not also a Distribution
Date), assuming 30-day months), (ii) the Investor Servicing Fee, (iii) the
product of the Series Percentage with respect to the Charged-Off Amount and the
Charged-Off Amount, and (iv) the Credit Enhancement Fee, in each case for such
Distribution Date.

      "Series Finance Charge Collections" shall mean, with respect to any day or
any Distribution Date or Trust Distribution Date, as applicable, the sum of the
amount of Class Finance Charge Collections for each Class for such day or for
the related Due Period, as applicable.

      "Series Initial Investor Interest" shall mean the aggregate face amount of
Investor Certificates initially authenticated and delivered pursuant to Section
7, as specified in the Series Term Sheet.

      "Series Interest Funding Account" shall have the meaning specified in
Section 8.

      "Series Invested Amount" with respect to any Distribution Date, shall mean
the sum of the Class Invested Amounts for each Class of the Series established
hereby on such Distribution Date.

      "Series Investor Interest" with respect to any Distribution Date, shall
mean the sum of the Class Investor Interests for each Class of the Series
established hereby on such Distribution Date.

      "Series Minimum Principal Receivables Balance" shall mean, with respect to
the Series established hereby, on any date of determination the sum of (A) (i)
if a Fixed Principal Allocation Event has not occurred, the Series Investor
Interest on such date of determination, divided by 0.93, (ii) if a Fixed
Principal Allocation Event has occurred but the Fully Funded Date has not
occurred, the Series Investor Interest as of the date of the occurrence of the
Fixed Principal Allocation Event, divided by 0.93 or (iii) on and after the
Fully Funded Date, if any, zero, and (B) (x) the product of (i) the sum of (1)
the amount on deposit in the Series Principal Funding Account on such date of
determination and (2) for any date of determination during (x) the Early
Accumulation Period, if any, the Estimated Principal Distribution Amount for the
next Distribution Date and (y) for any date of determination during the
Accumulation Period, the amount specified in the Master Servicer's notice of its
election to commence the Accumulation Period as the Controlled Accumulation
Amount for such Distribution Date, and (ii) a fraction the numerator of which is
the Estimated Investment Shortfall and the denominator of which is the Estimated
Yield, in each case on such date of determination, divided by (y) 0.93;
provided, however, that Discover Bank on behalf of the Holder of the Seller
Certificate may, upon 30 days' prior notice to the Trustee, the Rating Agencies
and the Credit Enhancement Provider, reduce the Series Minimum Principal
Receivables Balance by increasing the divisors set forth above, subject to the
condition that Discover Bank on behalf of the Holder of the Seller Certificate
shall have been notified by the Rating Agencies that such reduction would not
result in the lowering or

                                       22
<PAGE>   33
withdrawal of the rating of any Class of any Series then outstanding, and
provided, further, that the divisors set forth above may not be increased to
more than 0.98.

      "Series Percentage" shall mean, with respect to any specified category,
with respect to any Distribution Date or Trust Distribution Date, as applicable,
the sum of the Class Percentages with respect to such category for each Class of
the Series established hereby on such Distribution Date or Trust Distribution
Date, as applicable.

      "Series Principal Collections" shall mean, with respect to any day or any
Distribution Date or Trust Distribution Date, as applicable, the sum of the
amount of Class Principal Collections for each Class for such day or for the
related Due Period, as applicable.

      "Series Principal Collections Account" shall have the meaning specified in
Section 8.

      "Series Principal Funding Account" shall mean the Series Principal Funding
Account established pursuant to Section 8. Amounts "on deposit in" the Series
Principal Funding Account shall be deemed to be on deposit for the benefit of
(i) the Class A Certificateholders for the period up to and including the Class
A Expected Final Payment Date or Class A Final Maturity Date, as applicable, and
(ii) if there is a Subordinate Class with respect to Class A, the Class B
Certificateholders for the period beginning immediately after the Class A
Expected Final Payment Date or Class A Final Maturity Date, as applicable, and
ending on the Class B Expected Final Payment Date or Class B Final Maturity
Date, as applicable. Amounts "on deposit in" the Series Principal Funding
Account shall be deemed to include amounts invested in Permitted Investments
pursuant to Section 8 unless the context clearly requires otherwise.

      "Series Required Principal Amount" shall mean, for this Series, with
respect to each Distribution Date of the Controlled Liquidation Period or the
Accumulation Period, as applicable, the product of (x) (i) if the related Due
Period does not occur in February, 1.25 or (ii) if the related Due Period occurs
in February, 1.05, and (y) the Controlled Liquidation Amount or the Controlled
Accumulation Amount, as applicable, for such Distribution Date, and with respect
to each other Series that is a member of the same Group as the Series
established hereby, the amount specified in the Series Supplement for such
Series for such Distribution Date.

      "Series Term Sheet" shall mean the Series Term Sheet setting forth the
terms of the Series of Investor Certificates issued hereby, to which this Annex
is attached.

      "Series Termination Date" shall mean the date designated as such in the
Series Term Sheet.

      "Series Yield Collections" shall mean, with respect to any day or any
Distribution Date, as applicable, an amount equal to the product of the Series
Yield Factor and the amount of Series Principal Collections for such day or the
related Due Period, as applicable.

      "Series Yield Factor" shall mean the number identified as such in the
Series Term Sheet, as such number may be changed from time to time pursuant to
Section 25.

                                       23
<PAGE>   34
      "Shared Credit Enhancement" shall mean Credit Enhancement available for
the benefit of both the Class A Investor Certificates and the Class B Investor
Certificates.

      "Special Payment Date" shall mean each Distribution Date with respect to
the Amortization Period and the Distribution Date related to each Class Expected
Final Payment Date or Class Final Maturity Date, as applicable.

      "Stated Class A Credit Enhancement Amount" shall mean the "stated amount"
with respect to the Class A Cash Collateral Credit Enhancement, as set forth in
the Series Term Sheet.

      "Stated Class B Credit Enhancement Amount" shall mean the "stated amount"
with respect to the Credit Enhancement that is available solely for the benefit
of the Class B Investor Certificates, as set forth in the Series Term Sheet.

      "Stated Shared Credit Enhancement Amount," if applicable, shall mean the
"stated amount" with respect to the shared portion of the Credit Enhancement, as
set forth in the Series Term Sheet.

      "Statement Date" shall mean each date designated as such in the Series
Term Sheet.

      "Subclass" with respect to any Class shall mean, if applicable, each
portion of such Class that has a different Certificate Rate or method of
calculating its Certificate Rate.

      "Subordinate Class" shall mean, with respect to any Class, the Class, if
any, identified by the letter of the alphabet next succeeding the letter
designating such Class (e.g., the Subordinate Class with respect to Class A is
Class B).

      "Subordinate Series" shall mean any Series which is subordinated in right
of payment, in whole or in part, pursuant to the Series Supplement with respect
to such Series, to the Series established hereby.

      "Supplemental Credit Enhancement Amount," if applicable, shall have the
meaning set forth in the Series Term Sheet.

      "Supplemental Credit Enhancement Event" shall occur the first time the
long-term debt or deposit rating of Discover Bank or any Additional Seller is
withdrawn or reduced below BBB- by Standard & Poor's.

      "Supplemental Servicing Fee" shall mean, if applicable, with respect to
any Distribution Date, an amount equal to the product of the Supplemental
Servicing Fee Percentage and the Series Investor Interest on the first day of
the Due Period related to such Distribution Date (or in the case of the first
Distribution Date for the Series established hereby, the Series Investor
Interest on the Series Cut-Off Date).

      "Supplemental Servicing Fee Percentage," if applicable, shall mean the
percentage identified as such in the Series Term Sheet.

                                       24
<PAGE>   35
      "Supplemental Subordinated Amount," if applicable, shall have the meaning
set forth in the Series Term Sheet.

      "Swap Counterparty Rate," if applicable, with respect to any Class
Interest Rate Swap, shall have the meaning specified in the Series Term Sheet.

      "Swap Trust Rate," if applicable, with respect to any Class Interest Rate
Swap, shall have the meaning specified in the Series Term Sheet.

      "Telerate Page 3750," if applicable, shall mean the display page so
designated on the Bridge Telerate, Inc. (or such other rate as may replace that
page on that service for the purpose of displaying comparable rates or prices).

      "Total Available Credit Enhancement Amount" shall mean, with respect to
the first Distribution Date, the Stated Class B Credit Enhancement Amount plus,
if applicable, the Stated Shared Credit Enhancement Amount, and, on each
Distribution Date thereafter, shall mean the Available Class B Credit
Enhancement Amount plus, if applicable, the Available Shared Credit Enhancement
Amount, in each case after all adjustments thereto on the immediately preceding
Distribution Date, and, in each case, as adjusted pursuant to Section 9 on such
Distribution Date.

      "Total Maximum Credit Enhancement Amount" shall have the meaning set forth
in the Series Term Sheet.

      "United States" or "U.S." shall mean the United States of America, its
territories and possessions, any State of the United States and the District of
Columbia.

      SECTION 2.  Subordination

      (a) Subordination of Certain Classes. If there is a Subordinate Class
with respect to Class A, the Holders of each Class B Investor Certificate, by
their acceptance of such Investor Certificate, hereby subordinate, for the
benefit of the Holders of Class A Investor Certificates, to the extent and in
the manner set forth in Section 9, all of such Investor Certificateholders'
right, title and interest in and to future distributions due on such Holders'
Investor Certificates, but only to the extent of the Available Subordinated
Amount.

      (b) No Subordination of Series. The Investor Certificates of the Series
established hereby shall not be subordinated in right of payment to any other
Series, whether currently outstanding or to be issued in the future. One or more
other Series, however, may be subordinated in right of payment to the Series
established hereby, although the Sellers shall have no obligation to issue such
a Subordinate Series. If any Subordinate Series is issued, such Subordinate
Series shall be subordinate in right of payment to the Series established hereby
only to the extent set forth in the Series Supplement with respect to such
Subordinate Series.

      SECTION 3. Representations and Warranties of the Sellers. The
representations and warranties of the Sellers contained in Section 2.04 of the
Pooling and Servicing Agreement and the corresponding sections of any Assignment
are true on and as of the date hereof and/or the date set forth in the Pooling
and Servicing Agreement, as applicable. Each Seller also represents

                                       25
<PAGE>   36
and warrants to the Trust as of the date hereof that the execution, delivery and
performance of this Series Supplement by such Seller have been duly authorized
by all necessary corporate action, do not require any approval or consent of any
governmental agency or authority, do not and will not conflict with any material
provision of the Certificate of Incorporation or By-Laws of such Seller, do not
and will not conflict with, or result in a breach which would constitute a
material default under, any agreement for borrowed money binding upon or
applicable to it or such of its property which is material to it, or, to the
best of such Seller's knowledge, any law or governmental regulation or court
decree applicable to it or such material property, and this Series Supplement is
the valid, binding and enforceable obligation of such Seller, except as the same
may be limited by receivership, insolvency, reorganization, moratorium or other
laws relating to the enforcement of creditors' rights generally or by general
equity principles.

      SECTION 4. Representations and Warranties of Discover Bank as Master
Servicer and Servicer. The representations and warranties of Discover Bank as
the Master Servicer and as a Servicer contained in Section 3.04 of the Pooling
and Servicing Agreement are true on and as of the date hereof. Discover Bank as
Master Servicer and Servicer also represents and warrants to the Trust as of the
date hereof that the execution, delivery and performance of this Series
Supplement by Discover Bank have been duly authorized by all necessary corporate
action, do not require any approval or consent of any governmental agency or
authority, do not and will not conflict with any material provision of the
Certificate of Incorporation or By-Laws of Discover Bank, do not and will not
conflict with, or result in a breach which would constitute a material default
under, any agreement for borrowed money binding upon or applicable to it or such
of its property which is material to it, or, to the best of Discover Bank's
knowledge, any law or governmental regulation or court decree applicable to it
or such material property, and this Series Supplement is the valid, binding and
enforceable obligation of Discover Bank, except as the same may be limited by
receivership, insolvency, reorganization, moratorium or other laws relating to
the enforcement of creditors' rights generally or by general equity principles.

      SECTION 5. Representations and Warranties of Other Servicers. The
representations and warranties of each Servicer (other than Discover Bank), if
any, contained in Section 3.05 of the Pooling and Servicing Agreement are true
and correct on and as of the date hereof. Each such Servicer also represents and
warrants to the Trust as of the date hereof that the execution, delivery and
performance of this Series Supplement by such Servicer have been duly authorized
by all necessary corporate action, do not require any approval or consent of any
governmental agency or authority, do not and will not conflict with any material
provision of the Certificate of Incorporation or By-Laws of such Servicer, do
not and will not conflict with, or result in a breach which would constitute a
material default under, any agreement for borrowed money binding upon or
applicable to it or such of its property which is material to it, or, to the
best of such Servicer's knowledge, any law or governmental regulation or court
decree applicable to it or such material property, and this Series Supplement is
the valid, binding and enforceable obligation of such Servicer, except as the
same may be limited by receivership, insolvency, reorganization, moratorium or
other laws relating to the enforcement of creditors' rights generally or by
general equity principles.

      SECTION 6. Representations and Warranties of the Trustee. The
representations and warranties of the Trustee contained in Section 11.16 of the
Pooling and Servicing Agreement are

                                       26
<PAGE>   37
true on and as of the date hereof. The Trustee also represents and warrants as
of the date hereof that the Trustee has full power, authority and right to
execute, deliver and perform this Series Supplement, and has taken all necessary
action to authorize the execution, delivery and performance by it of this Series
Supplement, and this Series Supplement has been duly executed and delivered by
the Trustee.

      SECTION 7. Authentication of Certificates. Pursuant to the request of
the Sellers, the Trustee shall cause Investor Certificates in authorized
denominations evidencing the Series established hereby to be duly authenticated
and delivered as of the Series Closing Date to or upon the order of the Sellers
pursuant to Section 6.06 of the Pooling and Servicing Agreement.

      SECTION 8. Establishment and Administration of Investor Accounts and the
Credit Enhancement Account.

      (a) The Series Distribution Account, Series Collections Account and Series
Principal Collections Account. The Trustee, for the benefit of the
Certificateholders, shall cause to be established and maintained in the name of
the Trust, with the corporate trust department of an office or branch of either
the Trustee or a Qualified Institution, three non-interest bearing segregated
demand deposit accounts (the "Series Distribution Account"; for Collections, the
"Series Collections Account"; and for Series Principal Collections and certain
other amounts deposited therein pursuant to Section 9, the "Series Principal
Collections Account") bearing a designation clearly indicating that the funds
deposited therein are held for the benefit of the Certificateholders. The Trust
shall possess all right, title and interest in all funds on deposit in the
Series Distribution Account, the Series Collections Account and the Series
Principal Collections Account; provided, however, that all interest and earnings
(less investment expenses) on funds on deposit in any such account shall be paid
to the Holder of the Seller Certificate in accordance with Section 4.02(c) of
the Pooling and Servicing Agreement. Pursuant to authority granted to it
pursuant to Section 3.01(b) of the Pooling and Servicing Agreement, the Master
Servicer shall have the revocable power to instruct the Trustee to withdraw
funds from the Series Distribution Account, the Series Collections Account and
the Series Principal Collections Account for the purpose of carrying out the
duties of the Master Servicer hereunder. The Master Servicer at all times shall
maintain accurate records reflecting each transaction in the Series Distribution
Account, the Series Collections Account and the Series Principal Collections
Account. The Paying Agent also shall have the revocable authority to make
withdrawals from the Series Distribution Account.

      (b) Reallocation Accounts. The Trustee, for the benefit of the
Certificateholders, shall cause to be established and maintained in the name of
the Trust, with the corporate trust department of an office or branch of either
the Trustee or a Qualified Institution, two non-interest bearing segregated
trust accounts for the Group of which the Series established hereby is a member
(for reallocated Series Finance Charge Collections, Series Yield Collections,
Class A Investment Income and Series Additional Funds, the "Group Finance Charge
Collections Reallocation Account," and for reallocated Series Principal
Collections and other amounts deposited into the Series Principal Collections
Account pursuant to Section 9, the "Group Principal Collections Reallocation
Account") bearing a designation clearly indicating that the funds deposited
therein are held for the benefit of the Certificateholders. The Trust shall
possess

                                       27
<PAGE>   38
all right, title and interest in all funds on deposit from time to time in the
Group Finance Charge Collections Reallocation Account and the Group Principal
Collections Reallocation Account and in all proceeds thereof. Pursuant to
authority granted to it pursuant to Section 3.01(b) of the Pooling and Servicing
Agreement, the Master Servicer shall have the revocable power to instruct the
Trustee to withdraw funds from the Group Finance Charge Collections Reallocation
Account and the Group Principal Collections Reallocation Account for the purpose
of carrying out the duties of the Master Servicer hereunder. The Master Servicer
at all times shall maintain accurate records reflecting each transaction in the
Group Finance Charge Collections Reallocation Account and in the Group Principal
Collections Reallocation Account.

      (c) The Series Principal Funding Account. The Trustee, for the benefit of
the Certificateholders, shall establish and maintain or cause to be established
and maintained in the name of the Trust, with the corporate trust department of
an office or branch of either the Trustee or a Qualified Institution, a
non-interest bearing segregated trust account (for principal to be paid to
Investor Certificateholders of this Series, the "Series Principal Funding
Account") bearing a designation clearly indicating that the funds deposited
therein are held for the benefit of the Certificateholders. The Trust shall
possess all right, title and interest in all funds on deposit from time to time
in the Series Principal Funding Account and in all proceeds thereof. The Series
Principal Funding Account shall be under the sole dominion and control of the
Trustee for the benefit of the Certificateholders. Pursuant to authority granted
to it pursuant to Section 3.01(b) of the Pooling and Servicing Agreement, the
Master Servicer shall have the revocable power to withdraw funds from the Series
Principal Funding Account for the purpose of carrying out the duties of the
Master Servicer hereunder. The Master Servicer at all times shall maintain
accurate records reflecting each transaction in the Series Principal Funding
Account. The Paying Agent also shall have the revocable authority to make
withdrawals from the Series Principal Funding Account.

      Funds on deposit in the Series Principal Funding Account shall be invested
in Permitted Investments by the Trustee (or, at the direction of the Trustee, by
the Master Servicer on behalf of the Trustee) at the direction of Discover Bank
on behalf of the Holder of the Seller Certificate, as set forth below. Any
Permitted Investment with a stated maturity shall mature on or prior to the
following Distribution Date. On or before the occurrence of the first
Distribution Date with respect to the Accumulation Period or Controlled
Liquidation Period, as applicable (and on or before any subsequent Distribution
Date in which the notice previously given is no longer correct or valid), the
Master Servicer shall notify the Trustee of the amount of Certificate Principal
to be deposited into the Series Principal Funding Account on such Distribution
Date, and Discover Bank on behalf of the Holder of the Seller Certificate shall
direct the Trustee in writing to invest the funds that will be on deposit in the
Series Principal Funding Account on such Distribution Date (including any funds
previously invested in Permitted Investments that will be available for
reinvestment on such Distribution Date) in Permitted Investments. Discover
Bank's notice to the Trustee shall specifically identify each such Permitted
Investment (including its principal amount and maturity). In addition, Discover
Bank on behalf of the Holder of the Seller Certificate shall from time to time
provide written notice to the Trustee directing the Trustee to reinvest funds
representing principal, interest or other investment income received by it with
respect to such Permitted Investments (whether upon maturity or otherwise) in
additional Permitted Investments. In the event that Discover Bank on behalf of
the Holder of the Seller Certificate fails to direct the

                                       28
<PAGE>   39
Trustee to invest or reinvest any funds that are deposited in the Series
Principal Funding Account or that are received by it with respect to Permitted
Investments by 2:00 p.m. on the date such funds are available for investment,
the Trustee shall use reasonable efforts to invest such funds overnight in
securities represented by instruments in bearer or registered form which
evidence obligations issued or fully guaranteed, as to timely payment, by the
United States of America or any instrumentality or agency thereof when such
obligations are backed by the full faith and credit of the United States of
America until such time as the Trustee receives the required notice from
Discover Bank; provided, however, that the Trustee shall have no liability for
the failure to invest such funds if the Trustee has employed reasonable efforts
to make such investment.

      (d) The Series Interest Funding Account. The Trustee, for the benefit of
the Certificateholders, shall establish and maintain or cause to be established
and maintained in the name of the Trust, in the corporate trust department of an
office or branch of either the Trustee or a Qualified Institution, a
non-interest bearing segregated trust account (for payment of Certificate
Interest, the "Series Interest Funding Account") bearing a designation clearly
indicating that the funds deposited therein are held for the benefit of the
Certificateholders. The Trust shall possess all right, title and interest in all
funds on deposit from time to time in the Series Interest Funding Account and in
all proceeds thereof. Pursuant to authority granted to it pursuant to Section
3.01(b) of the Pooling and Servicing Agreement, the Master Servicer shall have
the revocable power to instruct the Trustee to withdraw funds from the Series
Interest Funding Account for the purpose of carrying out the duties of the
Master Servicer hereunder. Any funds on deposit in the Series Interest Funding
Account for more than one Business Day shall be invested in Permitted
Investments pursuant to Section 4.02(c) of the Pooling and Servicing Agreement.
The Master Servicer at all times shall maintain accurate records reflecting each
transaction in the Series Interest Funding Account. The Paying Agent shall also
have the revocable authority to make withdrawals from the Series Interest
Funding Account.

      (e) The Credit Enhancement Account. If the Credit Enhancement is Funded
Credit Enhancement, the Master Servicer, for the benefit of the
Certificateholders and the Credit Enhancement Provider, shall establish and
maintain or cause to be established and maintained in the name of the Trust,
with the corporate trust department of an office or branch of either the Trustee
or a Qualified Institution, a non-interest bearing segregated trust account (the
"Credit Enhancement Account") bearing a designation clearly indicating that the
funds deposited therein are held for the benefit of the Certificateholders and
the Credit Enhancement Provider. The Trust shall possess all right, title and
interest in all funds on deposit from time to time in the Credit Enhancement
Account and in all proceeds thereof. The Credit Enhancement Account shall be
under the sole dominion and control of the Trustee as the administrator of the
Credit Enhancement for the benefit of the Certificateholders and the Credit
Enhancement Provider; provided, however, the Master Servicer may make Credit
Enhancement Drawings pursuant to, and for the purposes set forth in, Section 9.
The interest of the Credit Enhancement Provider in the Credit Enhancement
Account shall be subordinated to the interests of the Certificateholders to the
extent provided herein and in the Credit Enhancement Agreement. The Trustee, at
the direction of the Master Servicer, shall (i) on the Series Closing Date,
deposit into the Credit Enhancement Account an amount equal to the sum of the
Stated Class A Credit Enhancement Amount, the Stated Shared Credit Enhancement
Amount, and the Stated Class B Credit Enhancement Amount, as applicable (such
amounts to be funded by the Credit Enhancement

                                       29
<PAGE>   40
Provider pursuant to the Credit Enhancement Agreement) and (ii) make withdrawals
from, and deposits to, the Credit Enhancement Account from time to time in the
amounts and for the purposes set forth in this Series Supplement. The Credit
Enhancement Provider shall not be entitled to reimbursement from the assets of
the Trust for any withdrawals from the Credit Enhancement Account except as
specifically provided in this Series Supplement. The Master Servicer at all
times shall maintain accurate records reflecting each transaction in the Credit
Enhancement Account.

      Funds on deposit in the Credit Enhancement Account shall be invested in
Permitted Investments by the Trustee as administrator of the Credit Enhancement
at the direction of the Master Servicer, as set forth below. Any Permitted
Investment with a stated maturity shall mature on or prior to the following
Distribution Date and any funds received with respect to the maturity of a
Permitted Investment shall be available in sufficient time to allow for any
payments to be made to the Investor Certificateholders on such Distribution
Date. The Master Servicer's notice to the Trustee shall specifically identify
each such Permitted Investment (including its principal amount and maturity). In
addition, the Master Servicer shall from time to time provide written notice to
the Trustee directing the Trustee to reinvest funds representing principal,
interest or other investment income received by it with respect to such
Permitted Investments (whether upon maturity or otherwise) in additional
Permitted Investments. In the event that the Master Servicer fails to direct the
Trustee to invest or reinvest any funds that are deposited in the Credit
Enhancement Account or that are received by it with respect to Permitted
Investments by 2:00 p.m. on the date such funds are available for investment,
the Trustee shall use reasonable efforts to invest such funds overnight in
securities represented by instruments in bearer or registered form which
evidence obligations issued or fully guaranteed, as to timely payment, by the
United States of America or any instrumentality or agency thereof when such
obligations are backed by the full faith and credit of the United States of
America until such time as the Trustee receives the required notice from the
Master Servicer; provided, however, that the Trustee shall have no liability for
the failure to invest such funds if the Trustee has employed reasonable efforts
to make such investment.

      On each Distribution Date, all interest and earnings (net of losses and
investment expenses) accrued since the preceding Distribution Date on funds on
deposit in the Credit Enhancement Account shall be paid to the Trustee as
administrator of the Credit Enhancement for application in accordance with the
provisions of the Credit Enhancement Agreement. For purposes of determining the
availability of funds or the balances in the Credit Enhancement Account, all
investment earnings on such funds shall be deemed not to be available or on
deposit. If, on any Distribution Date, after giving effect to all other deposits
to and withdrawals from the Credit Enhancement Account as of such Distribution
Date, the amount on deposit in the Credit Enhancement Account is greater than
the Total Maximum Credit Enhancement Amount, then the excess of the amount on
deposit over the Total Maximum Credit Enhancement Amount shall be withdrawn from
the Credit Enhancement Account and paid to the Trustee as administrator of the
Credit Enhancement for application in accordance with the provisions of the
Credit Enhancement Agreement.

      Upon the earliest to occur of (i) the termination of the Trust, (ii) the
Series Termination Date and (iii) the day on which the Class Invested Amount for
each Class of the Series established

                                       30
<PAGE>   41
hereby is paid in full, and after payment of all amounts to be paid on such day
from the Credit Enhancement Account to or for the benefit of Investor
Certificateholders of the Series established hereby, all amounts remaining on
deposit in the Credit Enhancement Account shall be withdrawn from such account
and paid to the Trustee as administrator of the Credit Enhancement for
application in accordance with the provisions of the Credit Enhancement
Agreement.

      (f) The Interest Rate Swap Account. The Trustee shall establish and
maintain or cause to be established and maintained in the name of the Trust, in
the corporate trust department of an office or branch of either the Trustee or a
Qualified Institution, a non-interest bearing segregated trust account (for
payment of Net Swap Payments, the "Interest Rate Swap Account"). The Trust shall
possess all right, title and interest in all funds on deposit from time to time
in the Interest Rate Swap Account and in all proceeds thereof. Pursuant to
authority granted to it pursuant to Section 3.01(b) of the Pooling and Servicing
Agreement, the Master Servicer shall have the revocable power to instruct the
Trustee to withdraw funds from the Interest Rate Swap Account for the purpose of
carrying out the duties of the Master Servicer hereunder. Any funds on deposit
in the Interest Rate Swap Account for more than one Business Day shall be
invested in Permitted Investments pursuant to Section 4.02(c) of the Pooling and
Servicing Agreement. The Master Servicer at all times shall maintain accurate
records reflecting each transaction in the Interest Rate Swap Account. The
Paying Agent shall also have the revocable authority to make withdrawals from
the Interest Rate Swap Account.

      (g) Transfer of Investor Accounts. If at any time any of the Investor
Accounts established in Sections 8(a) through 8(f) is not being held by the
Trustee and the institution holding such Investor Account ceases to be a
Qualified Institution, the Master Servicer shall within 10 Business Days
establish a new Investor Account (meeting any conditions specified in this
Series Supplement with respect to such Investor Account) with a Qualified
Institution and transfer any cash and/or any investments to such new Investor
Account.

      SECTION 9. Allocations of Collections

      (a) Deposits to Series Collections Account. On or before each
Distribution Date, the Master Servicer shall direct the Trustee in writing to
withdraw from the Group Collections Account and deposit into the Series
Collections Account an amount equal to the sum of the Series Finance Charge
Collections and the Series Principal Collections for the related Due Period. On
or before each Distribution Date, the Class Additional Funds for each Class of
the Series established hereby shall also have been deposited into the Series
Collections Account pursuant to Section 4.03(e) of the Pooling and Servicing
Agreement.

      (b) Deposits During the Revolving Period, Early Accumulation Period,
Accumulation Period, Controlled Liquidation Period or Amortization Period, as
Applicable. The Master Servicer shall, on or before each Distribution Date
during the Revolving Period, the Early Accumulation Period, the Accumulation
Period, the Controlled Liquidation Period or any Amortization Period, as
applicable, direct the Trustee in writing that funds be paid or deposited in the
following amounts, to the extent such funds are available and in the order of
priority specified, to the account or Person indicated, in each case as set
forth below; provided, however, that if the Credit Enhancement is not Funded
Credit Enhancement, then no amounts (other than any Credit

                                       31
<PAGE>   42
Enhancement Fees or any amounts paid to the Trustee as Administrator of the
Credit Enhancement in respect of the Total Available Credit Enhancement Amount)
that are measured or determined by reference to Class Excess Servicing for any
Class, Series Excess Servicing or the amount on deposit at any time in the Group
Finance Charge Collections Reallocation Account shall be paid or deposited if,
on the related Drawing Date, the Credit Enhancement Provider is unable to pay
its debts as they become due.

            (1) During the Accumulation Period or the Early Accumulation
Period, if any, or on the first Distribution Date of the Amortization Period, if
applicable, an amount equal to the amount of Class Investment Income for the
related Due Period for any Class shall be withdrawn from the Series Principal
Funding Account and deposited into the Series Collections Account.

            (2) With respect to Class A, an amount equal to the lesser of

                  (x)   the Class A Required Amount and

                  (y)   the sum of (1) Class A Finance Charge Collections, (2)
                        Class A Yield Collections, (3) Class A Investment
                        Income, if applicable, and (4) Class A Additional Funds

shall be withdrawn from the Series Collections Account and deposited into the
Series Distribution Account. The amount by which the Class A Required Amount
exceeds the amount of such deposit shall be the "Class A Required Amount
Shortfall."

            (3) With respect to Class A, an amount equal to the lesser of

                  (x)   the Class A Required Amount Shortfall and

                  (y)   funds, if any, available to pay such Class A Required
                        Amount Shortfall from funds initially allocated to any
                        Subordinate Series

shall be deposited into the Series Distribution Account. The Class A Required
Amount Shortfall shall be reduced by the amount of such deposit.

            (4) With respect to Class A, an amount equal to the lesser of

                  (x)   the Class A Cumulative Investor Charged-Off Amount and

                  (y)   Class A Excess Servicing

shall be withdrawn from the Series Collections Account and deposited into the
Series Principal Collections Account. The Class A Cumulative Investor
Charged-Off Amount, Series Excess Servicing and the Available Subordinated
Amount shall be reduced by the amount of such deposit.

            (5) An amount equal to the lesser of

                  (x)   the Class A Cumulative Investor Charged-Off Amount and

                                       32
<PAGE>   43
                  (y)   funds, if any, available to pay such Class A Cumulative
                        Investor Charged-Off Amount from funds initially
                        allocated to any Subordinate Series

shall be deposited into the Series Principal Collections Account. The Class A
Cumulative Investor Charged-Off Amount shall be reduced by the amount of such
deposit.

            (6) If there is a Subordinate Class with respect to Class A, an
amount equal to the least of

                  (x)   the Class A Required Amount Shortfall,

                  (y)   the Available Subordinated Amount, and

                  (z)   Class B Available Collections

shall be withdrawn from the Series Collections Account and deposited into the
Series Distribution Account. The Class B Subordinated Payment shall be increased
by, and the Class A Required Amount Shortfall, the Available Subordinated Amount
and Class B Available Collections shall be decreased by, the amount of such
deposit.

            (7) If there is a Subordinate Class with respect to Class A, an
amount equal to the least of

                  (x)   the Class A Cumulative Investor Charged-Off Amount,

                  (y)   the Available Subordinated Amount, and

                  (z)   Class B Available Collections

shall be withdrawn from the Series Collections Account and deposited into the
Series Principal Collections Account. The Class B Subordinated Payment shall be
increased by, and the Class A Cumulative Investor Charged-Off Amount, the
Available Subordinated Amount and Class B Available Collections shall be reduced
by, the amount of such deposit.

            (8) If there is a Subordinate Class with respect to Class A, an
amount equal to the lesser of

                  (x)   the Class B Required Amount and

                  (y)   the positive difference, if any, between

                        (1)   the amount of Class B Available Finance Charge
                              Collections, and

                        (2)   the Class B Subordinated Payment

                                       33
<PAGE>   44
shall be withdrawn from the Series Collections Account and deposited into the
Series Distribution Account. The amount by which the Class B Required Amount
exceeds the amount of such deposit shall be the "Class B Required Amount
Shortfall."

            (9) If there is a Subordinate Class with respect to Class A, an
amount equal to the lesser of

                  (x)   the Class B Required Amount Shortfall and

                  (y)   funds, if any, available to pay such Class B Required
                        Amount Shortfall from funds initially allocated to any
                        Subordinate Series

shall be deposited into the Series Distribution Account. The Class B Required
Amount Shortfall shall be reduced by the amount of such deposit.

            (10) If there is a Subordinate Class with respect to Class A, an
amount equal to the lesser of

                  (x)   the Class B Cumulative Investor Charged-Off Amount and

                  (y)   funds, if any, available to pay such Class B Cumulative
                        Investor Charged-Off Amount from funds initially
                        allocated to any Subordinate Series

shall be deposited into the Series Principal Collections Account. The Class B
Cumulative Investor Charged-Off Amount shall be reduced by the amount of such
deposit.

            (11) If there is a Subordinate Class with respect to Class A, an
amount equal to the least of

                  (x)   the Class A Required Amount Shortfall,

                  (y)   the Available Subordinated Amount, and

                  (z)   Series Excess Servicing

shall be withdrawn from the Series Collections Account and deposited into the
Series Distribution Account. The Class A Required Amount Shortfall, the
Available Subordinated Amount and the amount of Series Excess Servicing shall be
reduced by the amount of such deposit.

            (12) If there is a Subordinate Class with respect to Class A, an
amount equal to the least of

                  (x)   the Class A Cumulative Investor Charged-Off Amount,

                  (y)   the Available Subordinated Amount, and

                  (z)   Series Excess Servicing

                                       34
<PAGE>   45
shall be withdrawn from the Series Collections Account and deposited into the
Series Principal Collections Account. The Class A Cumulative Investor
Charged-Off Amount, the Available Subordinated Amount and the amount of Series
Excess Servicing shall be reduced by the amount of such deposit. If the Class A
Cumulative Investor Charged-Off Amount is greater than zero after such
reduction, the Class A Cumulative Investor Charged-Off Amount shall be further
reduced by an amount equal to the least of

                  (x)   the Class A Cumulative Investor Charged-Off Amount,

                  (y)   the Available Subordinated Amount, and

                  (z)   the Class B Investor Interest.

The Class A Cumulative Investor Charged-Off Amount, the Available Subordinated
Amount and the Class B Investor Interest shall each be reduced by such least
amount, and the Class B Cumulative Investor Charged-Off Amount shall be
increased by such amount.

            (13) If there is a Subordinate Class with respect to Class A, an
amount equal to the lesser of

                  (x)   the Class B Required Amount Shortfall and

                  (y)   Series Excess Servicing

shall be withdrawn from the Series Collections Account and deposited into the
Series Distribution Account. The Class B Required Amount Shortfall and the
amount of Series Excess Servicing shall be reduced by the amount of such
deposit.

            (14) If there is a Subordinate Class with respect to Class A, an
amount equal to the lesser of

                  (x)   the Class B Cumulative Investor Charged-Off Amount and

                  (y)   Series Excess Servicing

shall be withdrawn from the Series Collections Account and deposited into the
Series Principal Collections Account. The Class B Cumulative Investor
Charged-Off Amount and the amount of Series Excess Servicing shall be reduced by
the amount of such deposit.

            (15) On each Distribution Date prior to the Fully Funded Date, if
any, an amount equal to the lesser of

                  (x)   the amount by which the Total Available Credit
                        Enhancement Amount is less than the Total Maximum Credit
                        Enhancement Amount and

                  (y)   Series Excess Servicing

                                       35
<PAGE>   46
shall be withdrawn from the Series Collections Account and paid to the Trustee
as administrator of the Credit Enhancement for application in accordance with
the provisions of the Credit Enhancement Agreement. If there is Shared Credit
Enhancement or Class A Cash Collateral Credit Enhancement, such deposit shall
increase the Available Shared Credit Enhancement Amount or Available Class A
Credit Enhancement Amount, until the Available Shared Credit Enhancement Amount
or Available Class A Credit Enhancement Amount, as applicable, equals the
Maximum Shared Credit Enhancement Amount or the Maximum Class A Credit
Enhancement Amount, as applicable. If there is a Subordinate Class with respect
to Class A, any remaining portion of such deposit shall increase the Available
Class B Credit Enhancement Amount until the Available Class B Credit Enhancement
Amount equals the Maximum Class B Credit Enhancement Amount. The Total Available
Credit Enhancement Amount shall be increased by, and the amount of Series Excess
Servicing shall be decreased by, the amount of such deposit.

            (16) If there is Shared Credit Enhancement or Class A Cash
Collateral Credit Enhancement, and if the Class A Required Amount Shortfall is
greater than zero, the Master Servicer, on the related Drawing Date, shall make
a Credit Enhancement Drawing in an amount equal to the lesser of

                  (x)   the Class A Required Amount Shortfall and

                  (y)   the Available Shared Credit Enhancement Amount or the
                        Available Class A Credit Enhancement Amount, as
                        applicable,

and such amount shall be deposited into the Series Distribution Account. The
Class A Required Amount Shortfall and the Available Shared Credit Enhancement
Amount or Available Class A Credit Enhancement Amount, as applicable, shall be
reduced by the amount of such deposit.

            (17) If there is Shared Credit Enhancement or Class A Cash
Collateral Credit Enhancement, and if the Class A Cumulative Investor
Charged-Off Amount is greater than zero, the Master Servicer, on the related
Drawing Date, shall make a Credit Enhancement Drawing in an amount equal to the
lesser of

                  (x)   the Class A Cumulative Investor Charged-Off Amount and

                  (y)   the Available Shared Credit Enhancement Amount or the
                        Available Class A Credit Enhancement Amount, as
                        applicable,

and such amount shall be deposited into the Series Principal Collections
Account. The Class A Cumulative Investor Charged-Off Amount and the Available
Shared Credit Enhancement Amount or Available Class A Credit Enhancement Amount,
as applicable, shall be reduced by the amount of such deposit.

            (18) If there is Shared Credit Enhancement, and if there is a
Subordinate Class with respect to Class A, and if the Class B Required Amount
Shortfall is greater than zero, the Master Servicer, on the related Drawing
Date, shall make a Credit Enhancement Drawing in an amount equal to the lesser
of

                                       36
<PAGE>   47
                  (x)   the Class B Required Amount Shortfall and

                  (y)   the Available Shared Credit Enhancement Amount

and such amount shall be deposited into the Series Distribution Account. The
Class B Required Amount Shortfall and the Available Shared Credit Enhancement
Amount shall be reduced by the amount of such deposit.

            (19) If there is Shared Credit Enhancement, and if there is a
Subordinate Class with respect to Class A, and if the Class B Cumulative
Investor Charged-Off Amount is greater than zero, the Master Servicer, on the
related Drawing Date, shall make a Credit Enhancement Drawing in an amount equal
to the lesser of

                  (x)   the Class B Cumulative Investor Charged-Off Amount and

                  (y)   the Available Shared Credit Enhancement Amount

and such amount shall be deposited into the Series Principal Collections
Account. The Class B Cumulative Investor Charged-Off Amount and the Available
Shared Credit Enhancement Amount shall be reduced by the amount of such deposit.

            (20) If there is Subordinate Class with respect to Class A, and if
the Class B Required Amount Shortfall is greater than zero, the Master Servicer,
on the related Drawing Date, shall make a Credit Enhancement Drawing in an
amount equal to the lesser of

                  (x)   the Class B Required Amount Shortfall and

                  (y)   the Available Class B Credit Enhancement Amount

and such amount shall be deposited into the Series Distribution Account. The
Class B Required Amount Shortfall and the Available Class B Credit Enhancement
Amount shall be reduced by the amount of such deposit.

            (21) If there is a Subordinate Class with respect to Class A, and if
the Class B Cumulative Investor Charged-Off Amount is greater than zero, the
Master Servicer, on the related Drawing Date, shall make a Credit Enhancement
Drawing in an amount equal to the lesser of

                  (x)   the Class B Cumulative Investor Charged-Off Amount and

                  (y)   the Available Class B Credit Enhancement Amount

and such amount shall be deposited into the Series Principal Collections
Account. The Class B Cumulative Investor Charged-Off Amount and the Available
Class B Credit Enhancement Amount shall be reduced by the amount of such
deposit.

            (22) An amount equal to the lesser of

                                       37
<PAGE>   48
                  (x)   the Credit Enhancement Fee and

                  (y)   Series Excess Servicing

shall be withdrawn from the Series Collections Account and paid to the Trustee
as the administrator of the Credit Enhancement for application in accordance
with the provisions of the Credit Enhancement Agreement. The amount of Series
Excess Servicing shall be reduced by the amount of such payment.

            (23) An amount equal to the Monthly Swap Deposit, if any, up to the
remaining amount of Series Excess Servicing, shall be withdrawn from the Series
Collections Account and deposited into the Interest Rate Swap Account.

            (24) An amount equal to the amount of Series Excess Servicing shall
be withdrawn from the Series Collections Account and deposited into the Group
Finance Charge Collections Reallocation Account.

            (25) The allocations set forth in clauses (25)(A) and (25)(B) shall
be made, first, with respect to Class A, and then, if there is a Subordinate
Class with respect to Class A, the allocations set forth in clauses (25)(A) and
(25)(B) shall be made with respect to Class B, to the extent that funds are
available pursuant to this clause (25):

            (A) An amount equal to the lesser of

                  (x)   the Class Required Amount Shortfall and

                  (y)   the product of

                        (1)   a fraction the numerator of which is the Class
                              Required Amount Shortfall and the denominator of
                              which is the sum of the Class Required Amount
                              Shortfalls for all Classes designated by the same
                              letter of the alphabet of all Series in the Group
                              to which the Series established hereby belongs
                              (after giving effect to provisions in the
                              applicable Series Supplements substantially
                              similar to the clauses preceding this clause (25))
                              and

                        (2)   the amount on deposit in the Group Finance Charge
                              Collections Reallocation Account before any
                              withdrawals therefrom with respect to any other
                              Series pursuant to a comparable clause in the
                              applicable Series Supplements,

shall be withdrawn from the Group Finance Charge Collections Reallocation
Account and deposited into the Series Distribution Account. The Class Required
Amount Shortfall shall be reduced by the amount of such deposit. The Available
Subordinated Amount shall be increased by the amount of any such deposit that
reduces the Class B Required Amount Shortfall.

                                       38
<PAGE>   49
            (B) An amount equal to the lesser of

                  (x)   the Class Cumulative Investor Charged-Off Amount and

                  (y)   the product of

                        (1)   a fraction the numerator of which is the Class
                              Cumulative Investor Charged-Off Amount and the
                              denominator of which is the sum of the Class
                              Cumulative Investor Charged-Off Amounts for all
                              Classes designated by the same letter of the
                              alphabet of all Series in the Group to which the
                              Series established hereby belongs (after giving
                              effect to provisions in the applicable Series
                              Supplements substantially similar to the clauses
                              preceding this clause (25)) and

                        (2)   the amount on deposit in the Group Finance Charge
                              Collections Reallocation Account before any
                              withdrawals therefrom with respect to any other
                              Series pursuant to a comparable clause in the
                              applicable Series Supplements,

shall be withdrawn from the Group Finance Charge Collections Reallocation
Account and deposited into the Series Principal Collections Account. The Class
Cumulative Investor Charged-Off Amount shall be reduced by the amount of such
deposit. The Available Subordinated Amount shall be increased by the amount of
any such deposit that reduces the Class B Cumulative Investor Charged-Off
Amount.

            (C) After the allocations set forth in clauses (25)(A) and (25)(B)
are made with respect to Class A and Class B, then, if there are one or more
Subordinate Classes other than Class B, the allocations set forth in clauses
(25)(A) and (25)(B) shall be made with respect to each other such Class, in
alphabetical order, to the extent that funds are available pursuant to this
clause (25).

            (26) The allocations set forth in clauses (26)(A) and (26)(B) shall
be made, to the extent that funds are available pursuant to this clause (26):

            (A) If there is Shared Credit Enhancement or Class A Cash
Collateral Credit Enhancement, an amount equal to the lesser of

                  (x)   the amount by which the Available Shared Credit
                        Enhancement Amount or the Available Class A Credit
                        Enhancement Amount, as applicable, is less than the
                        Maximum Shared Credit Enhancement Amount or the Maximum
                        Class A Credit Enhancement Amount, as applicable and

                  (y)   the product of

                                       39
<PAGE>   50
                        (1)   a fraction, the numerator of which is the amount
                              by which the Available Shared Credit Enhancement
                              Amount or the Available Class A Credit Enhancement
                              Amount, as applicable, is less than the Maximum
                              Shared Credit Enhancement Amount or the Maximum
                              Class A Credit Enhancement Amount, as applicable,
                              and the denominator of which is the sum of, for
                              each Series in the Group of which the Series
                              established hereby is a member, the amount by
                              which the Available Shared Credit Enhancement
                              Amount or the Available Class A Credit Enhancement
                              Amount, as applicable, for such Series is less
                              than the Maximum Shared Credit Enhancement Amount
                              or the Maximum Class A Credit Enhancement Amount,
                              as applicable, for such Series (after giving
                              effect to provisions in the applicable Series
                              Supplements substantially similar to the clauses
                              preceding this clause (26)) and

                        (2)   the amount on deposit in the Group Finance Charge
                              Collections Reallocation Account before any
                              withdrawals therefrom with respect to any other
                              Series pursuant to a comparable clause in the
                              applicable Series Supplements,

shall be withdrawn from the Group Finance Charge Collections Reallocation
Account and paid to the Trustee as administrator of the Credit Enhancement for
application in accordance with the provisions of the Credit Enhancement
Agreement. Such deposit shall increase the Available Shared Credit Enhancement
Amount or the Available Class A Credit Enhancement Amount, as applicable.

            (B) If there is a Subordinate Class with respect to Class A, an
amount equal to the lesser of

                  (x)   the amount by which the Available Class B Credit
                        Enhancement Amount is less than the Maximum Class B
                        Credit Enhancement Amount and

                  (y)   the product of

                        (1)   a fraction, the numerator of which is the amount
                              by which the Available Class B Credit Enhancement
                              Amount is less than the Maximum Class B Credit
                              Enhancement Amount and the denominator of which is
                              the sum of, for each Series in the Group of which
                              the Series established hereby is a member, the
                              amount by which the Available Class B Credit
                              Enhancement Amount for such Series is less than
                              the Maximum Class B Credit Enhancement Amount for
                              such Series (after giving effect to provisions in
                              the applicable

                                       40
<PAGE>   51
                              Series Supplements substantially similar to the
                              clauses preceding this clause (26)) and

                        (2)   the amount on deposit in the Group Finance Charge
                              Collections Reallocation Account before any
                              withdrawals therefrom with respect to any other
                              Series pursuant to a comparable clause in the
                              applicable Series Supplements,

shall be withdrawn from the Group Finance Charge Collections Reallocation
Account and paid to the Trustee as administrator of the Credit Enhancement for
application in accordance with the provisions of the Credit Enhancement
Agreement. Each of the Available Class B Credit Enhancement Amount and the
Available Subordinated Amount shall be increased by the amount of such deposit.

            (27) After all allocations from the Group Finance Charge
Collections Reallocation Account to be made pursuant to any other Series
Supplement for any Series that is a member of the same Group of which the Series
established hereby is a member have been made, an amount equal to the product of
(x) a fraction the numerator of which shall be the Series Investor Interest and
the denominator of which shall be the sum of the Series Investor Interests for
each Series that is a member of the same Group as the Series established hereby
(including the Series established hereby) and (y) the amount remaining on
deposit in the Group Finance Charge Collections Reallocation Account shall be
withdrawn from the Group Finance Charge Collections Reallocation Account and
paid to the Trustee as administrator of the Credit Enhancement for application
in accordance with the provisions of the Credit Enhancement Agreement. Amounts
remaining on deposit in the Group Finance Charge Collections Reallocation
Account shall be withdrawn from such account and allocated pursuant to the
provisions of the Series Supplements for each other Series that is a member of
the same Group as the Series established hereby.

            (28) Any amounts remaining on deposit in the Series Collections
Account shall be withdrawn from the Series Collections Account and deposited
into the Series Principal Collections Account.

            (29) The Net Swap Receipt, to the extent paid to the Trustee by the
Interest Rate Swap Counterparty pursuant to the Class Interest Rate Swap, shall
be deposited in the Series Collections Account.

            (30) Any amount remaining on deposit in the Series Collections
Account will be withdrawn from the Series Collections Account and paid to the
Holder of the Seller Certificate.

            (31) Unless the Distribution Date is a Distribution Date in the
Revolving Period, the lesser of

                  (x)   the Principal Distribution Amount and

                  (y)   the amount on deposit in the Series Principal
                        Collections Account

                                       41
<PAGE>   52
shall be withdrawn from the Series Principal Collections Account and deposited
into the Series Principal Funding Account. The amount by which the Principal
Distribution Amount exceeds the amount of such deposit shall be the "Principal
Distribution Amount Shortfall."

            (32) Unless the Distribution Date is a Distribution Date in the
Revolving Period, the lesser of

                  (x)   the Principal Distribution Amount Shortfall and

                  (y)   funds, if any, available to pay such Principal
                        Distribution Amount Shortfall from funds initially
                        allocated to any Subordinate Series

shall be deposited into the Series Principal Funding Account. The Principal
Distribution Amount Shortfall shall be reduced by the amount of such deposit.

            (33) Any amounts remaining on deposit in the Series Principal
Collections Account shall be withdrawn from the Series Principal Collections
Account and be deposited into the Group Principal Collections Reallocation
Account.

            (34) During the Accumulation Period or the Controlled Liquidation
Period, as applicable, the allocation set forth below shall be made with respect
to each Class, beginning with Class A and continuing, seriatim, for each Class,
to the extent that funds are available pursuant to this clause (34):

      An amount equal to the lesser of

            (x)   the portion of the Principal Distribution Amount Shortfall
                  that is allocable to such Class and

            (y)   the product of

                  (1)   a fraction the numerator of which is the portion of the
                        Principal Distribution Amount Shortfall that is
                        allocable to such Class and the denominator of which is
                        the sum of the portions of the Principal Distribution
                        Amount Shortfalls allocable to all Classes designated by
                        the same letter of the alphabet of all Series in the
                        Group to which the Series established hereby belongs
                        that are in their Accumulation Periods or Controlled
                        Liquidation Periods, as applicable (after giving effect
                        to provisions in the applicable Series Supplements
                        substantially similar to the clauses preceding this
                        clause (34)) and

                  (2)   the amount on deposit in the Group Principal Collections
                        Reallocation Account before any withdrawals therefrom
                        with respect to any other Series

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<PAGE>   53
shall be withdrawn from the Group Principal Collections Reallocation Account and
deposited into the Series Principal Funding Account. The Principal Distribution
Amount Shortfall shall be reduced by the amount of such deposit.

            (35) After all allocations from the Group Principal Collections
Reallocation Account to be made pursuant to any other Series Supplement for any
Series that is a member of the same Group of which the Series established hereby
is a member have been made, the amount remaining on deposit in the Group
Principal Collections Reallocation Account shall be withdrawn from the Group
Principal Collections Reallocation Account and deposited into the Collections
Account.

            (36) After all other allocations have been provided for with
respect to each Series then outstanding (whether or not such Series is a member
of the same Group as the Series established hereby), the lesser of

            (x)   the amount of the Seller Interest and

            (y)   the amount on deposit in the Collections Account

shall be paid to the Holder of the Seller Certificate. If, after such payment,
any amounts remain on deposit in the Collections Account, such amounts shall
remain in the Collections Account for allocation as Principal Collections on the
next Trust Distribution Date.

      SECTION 10. Payments.

      (a)   Payments.

            (1) On each Distribution Date related to a Due Period in the
Accumulation Period or the Early Accumulation Period, and on the first
Distribution Date of the Amortization Period, the Master Servicer shall direct
the Trustee in writing to withdraw the amount of Excess Income, if any, on
deposit in the Series Principal Funding Account from the Series Principal
Funding Account and pay such amount to the Holder of the Seller Certificate.

            (2) .On each Distribution Date, after giving effect to payments
made pursuant to Section 9 and the calculation of Investor Losses and adjustment
of the Class Investor Interest and Class Invested Amount with respect to each
Class pursuant to Section 13, the Master Servicer shall direct the Trustee in
writing to withdraw and cause the Paying Agent to pay funds from the applicable
Investor Account to or for the benefit of each Class of Investor
Certificateholders, seriatim, with respect to each Class, beginning with Class
A, until such payments have been made with respect to each Class, as set forth
below:

            (A) First, an amount equal to the lesser of

                  (x)   the Class Modified Required Amount and

                  (y)   the amount on deposit in the Series Distribution
                        Account.

                                       43
<PAGE>   54
shall be withdrawn from the Series Distribution Account and deposited into the
Series Interest Funding Account. The amount by which the Class Modified Required
Amount exceeds the amount so deposited into the Series Interest Funding Account
shall be the "Class Monthly Deficiency Amount" with respect to such Distribution
Date.

            (B) Second, an amount equal to the lesser of

                  (x)   the sum of the Class Monthly Servicing Fee for such
                        Distribution Date and all accrued but unpaid Class
                        Monthly Servicing Fees from prior months and

                  (y)   the amount deposited into the Series Distribution
                        Account with respect to such Class on such Distribution
                        Date pursuant to Section 9 less the amount deposited
                        into the Series Interest Funding Account with respect to
                        such Class pursuant to clause (A) above

shall be withdrawn from the Series Distribution Account and paid to the Master
Servicer.

            (3) On each Interest Payment Date, the Master Servicer shall
direct the Trustee in writing to deposit into the Series Interest Funding
Account any Class Interest Rate Cap Payment made by any Interest Rate Cap
Provider for any Class or Subclass pursuant to the Class Interest Rate Cap for
such Class or Subclass.

            (4) On each Interest Payment Date, after giving effect to the
payments described above on such day, the Master Servicer shall direct the
Trustee in writing to withdraw the amount deposited into the Series Interest
Funding Account with respect to each Class or Subclass since the preceding
Interest Payment Date. The Master Servicer shall cause the Paying Agent to pay
such amount on each Interest Payment Date to the Investor Certificateholders of
such Class or Subclass in accordance with Section 5.01 of the Pooling and
Servicing Agreement.

            (5) On each Interest Payment Date (or, following the early
termination of the Class Interest Rate Swap, on each Distribution Date), the
Master Servicer shall direct the Trustee in writing to withdraw any Net Swap
Payment from the Interest Rate Swap Account and pay such amount to the Interest
Rate Swap Counterparty in accordance with the provisions of the Class Interest
Rate Swap.

            (6) On each Distribution Date in any April or October, the Master
Servicer shall direct the Trustee in writing to withdraw the positive
difference, if any, between the amount on deposit in the Interest Rate Swap
Account and the amount of the Net Swap Payment payable to the Interest Rate Swap
Counterparty on the next Interest Payment Date from the Interest Rate Swap
Account and pay such amount to the Holder of the Seller Certificate.

            (7) On each Principal Payment Date, after giving effect to the
payments described above on such day, an amount equal to the lesser of

                  (x)   the Controlled Liquidation Amount and

                                       44
<PAGE>   55
                  (y)   the amount deposited into the Series Principal Funding
                        Account on any Distribution Date pursuant to Section 9

shall be withdrawn from the Series Principal Funding Account. The Master
Servicer shall cause the Paying Agent to pay such amount to the Investor
Certificateholders of such Class or Subclass in accordance with Section 5.01 of
the Pooling and Servicing Agreement. Except as set forth in the following
sentence, all such amounts shall be paid to or with respect to the Class A
Investor Certificateholders until the Class A Invested Amount is reduced to
zero; and, thereafter, if there is a Subordinate Class with respect to Class A,
such amounts shall be paid to or with respect to the Class B Investor
Certificateholders until the Class B Invested Amount is reduced to zero, unless
the Series Termination Date occurs prior to such date; provided, however, that
on the Fully Funded Date, if any, the Class B Invested Amount shall be withdrawn
from the Series Principal Funding Account and paid to the Class B Investor
Certificateholders. In no event shall any amounts be paid with respect to any
Class of Investor Certificates pursuant to this clause (5) in excess of the
Class Invested Amount for such Class. Any amounts remaining on deposit in the
Series Principal Funding Account after the Class Invested Amount for each Class
has been reduced to zero shall be paid to the Holder of the Seller Certificate.

            (8) .On each Special Payment Date during the Amortization Period,
after giving effect to the payments described above on such day, an amount equal
to the lesser of

                  (x)   the Principal Distribution Amount and

                  (y)   the amount deposited into the Series Principal Funding
                        Account on such Special Payment Date pursuant to Section
                        9

shall be withdrawn from the Series Principal Funding Account. The Master
Servicer shall cause the Paying Agent to pay such amount to the Investor
Certificateholders of such Class or Subclass in accordance with Section 5.01 of
the Pooling and Servicing Agreement. Except as set forth in the following
sentence, all such amounts shall be paid to or with respect to the Class A
Investor Certificateholders until the Class A Invested Amount is reduced to
zero; and, thereafter, if there is a Subordinate Class with respect to Class A,
such amounts shall be paid to or with respect to the Class B Investor
Certificateholders until the Class B Invested Amount is reduced to zero, unless
the Series Termination Date occurs prior to such date. In no event shall any
amounts be paid with respect to any Class of Investor Certificates pursuant to
this clause (6) in excess of the Class Invested Amount for such Class. Any
amounts remaining on deposit in the Series Principal Funding Account after the
Class Invested Amount for each Class has been reduced to zero shall be paid to
the Holder of the Seller Certificate.

            (9) On the first Distribution Date of the Amortization Period, if
any, after giving effect to the payments and withdrawals and conversions
described above on such day, an amount equal to the lesser of

                  (x)   the Series Invested Amount and

                  (y)   the amount on deposit in the Series Principal Funding
                        Account

                                       45
<PAGE>   56
shall be withdrawn from the Series Principal Funding Account. The Master
Servicer shall cause the Paying Agent to pay such amount to the Investor
Certificateholders of such Class or Subclass in accordance with Section 5.01 of
the Pooling and Servicing Agreement. Except as set forth in the following
sentence, all such amounts shall be paid to or with respect to the Class A
Investor Certificateholders until the Class A Invested Amount is reduced to
zero; and, thereafter, if there is a Subordinate Class with respect to Class A,
such amounts shall be paid to or with respect to the Class B Investor
Certificateholders until the Class B Invested Amount is reduced to zero, unless
the Series Termination Date occurs prior to such date. In no event shall any
amounts be paid with respect to any Class of Investor Certificates pursuant to
this clause (7) in excess of the Class Invested Amount for such Class. Any
amounts remaining on deposit in the Series Principal Funding Account after the
Class Invested Amount for each Class has been reduced to zero shall be paid to
the Holder of the Seller Certificate.

            (10) On the Class Expected Final Payment Date or the Class Final
Maturity Date, if applicable (or, if such Class Expected Final Payment Date or
Class Final Maturity Date is not also a Distribution Date, on the Distribution
Date occurring in the same calendar month as the Class Expected Final Payment
Date or the Class Final Maturity Date, if applicable), the Master Servicer shall
direct the Trustee in writing to withdraw the amount on deposit in the Series
Principal Funding Account with respect to each Class; provided that (i) such
amount shall be no greater than the Class Invested Amount and (ii) funds, if
any, remaining on deposit in the Series Principal Funding Account after the
payment in full of the Class Invested Amount with respect to each Class shall be
withdrawn and paid to the Holder of the Seller Certificate. The Master Servicer
shall cause the Paying Agent to pay such amount to the Investor
Certificateholders of such Class or Subclass in accordance with Section 5.01 of
the Pooling and Servicing Agreement.

      (b) Payments to the Sellers and/or the Master Servicer. Notwithstanding
the other provisions in Section 9 and this Section 10, any amounts payable to
Discover Bank on behalf of the Holder of the Seller Certificate or to the Master
Servicer on any Distribution Date pursuant to Section 9 and this Section 10 may
be paid prior to such Distribution Date pursuant to Section 4.03(d) of the
Pooling and Servicing Agreement.

      SECTION 11. Credit Enhancement

      (a) Initial Credit Enhancement. The Master Servicer hereby represents with
respect to the Initial Credit Enhancement and shall be deemed to represent with
respect to any successor Credit Enhancement that (i) the Master Servicer has
provided for the Credit Enhancement for the account of the Trustee and for the
benefit of the Investor Certificateholders, (ii) the Master Servicer has entered
into a Credit Enhancement Agreement, (iii) the Credit Enhancement permits the
Trustee or the Master Servicer, acting as the Trustee's attorney-in-fact or
otherwise, to make Credit Enhancement Drawings from time to time in an amount up
to the Total Available Credit Enhancement Amount at such time, for the purposes
set forth in this Agreement and (iv) the Credit Enhancement and the respective
Credit Enhancement Agreement may be terminated by the Trustee without penalty if
(x) the Master Servicer elects to obtain a successor Credit Enhancement and such
successor Credit Enhancement does not cause the ratings of the Investor
Certificates of the Series established hereby to be withdrawn or lowered by
either of the Rating Agencies from the respective ratings of such Investor
Certificates immediately prior to such

                                       46
<PAGE>   57
election or (y) if the Credit Enhancement is not Funded Credit Enhancement, the
Credit Enhancement Provider ceases to be a Qualified Credit Enhancement
Provider.

      (b)   Successor Credit Enhancement.

            (i) If the Credit Enhancement is not Funded Credit Enhancement and
      if, at any time, the provider of such Credit Enhancement ceases to be a
      Qualified Credit Enhancement Provider, the Master Servicer shall obtain a
      successor Credit Enhancement within 30 days or such longer period as will
      not result in the lowering or withdrawal of the rating of any Class of any
      Series then outstanding by the Rating Agencies (a) which, if such
      successor Credit Enhancement is not to be Funded Credit Enhancement, will
      be issued by a Qualified Credit Enhancement Provider and (b) with respect
      to which the representations set forth in Section 11(a) will be satisfied;
      provided, however, that the Master Servicer shall not be required to
      continue efforts to obtain a successor Credit Enhancement if the then
      existing Credit Enhancement Provider again becomes a Qualified Credit
      Enhancement Provider and remains such; and, provided, further, that unless
      otherwise agreed to by the Rating Agencies, the Credit Enhancement and
      Credit Enhancement Agreement will not be terminated and no successor
      Credit Enhancement Provider shall be selected if the successor Credit
      Enhancement, the successor Credit Enhancement Agreement, or the selection
      of such successor Credit Enhancement Provider would cause the ratings of
      the Investor Certificates of the Series established hereby to be withdrawn
      or lowered by either Rating Agency from the respective ratings of such
      Investor Certificates immediately prior to such selection. The Master
      Servicer, the Trustee and the Sellers shall promptly enter into any such
      successor Credit Enhancement Agreement, and the Master Servicer shall use
      its best efforts to secure the signature of any other required party to
      such agreement.

            (ii) Regardless of whether the Credit Enhancement is Funded Credit
      Enhancement, the Master Servicer may elect, at any time, to obtain a
      successor Credit Enhancement, provided that such successor Credit
      Enhancement does not cause the ratings of the Investor Certificates of the
      Series established hereby to be withdrawn or lowered by either of the
      Rating Agencies from the respective ratings of such Investor Certificates
      immediately prior to such election.

            (iii).In any case, subject to the foregoing, any successor Credit
      Enhancement obtained by the Master Servicer need not consist of the same
      type of Credit Enhancement as the Initial Credit Enhancement, but may
      consist of a different type of facility, including, but not limited to, a
      reserve account, a cash collateral account, an irrevocable standby letter
      of credit, a surety bond or a combination of any of the above. Upon
      issuance of, or other provision for, any such successor Credit
      Enhancement, the Trustee shall terminate the prior Credit Enhancement and
      Credit Enhancement Agreement.

      (c) Supplemental Credit Enhancement Event. Upon the occurrence of a
Supplemental Credit Enhancement Event, Discover Bank as Servicer shall, within
60 days of notice from Standard & Poor's of the withdrawal or downgrade (or such
longer period as may be agreed to by Standard & Poor's), arrange for the payment
of the Supplemental Credit

                                       47
<PAGE>   58
Enhancement Amount, if any, by a Person other than Discover Bank (or from Series
Excess Servicing) to the Trustee as administrator of the Credit Enhancement for
application in accordance with the provisions of the Credit Enhancement
Agreement. Both the form and the provider of the Supplemental Credit Enhancement
Amount, if any, shall be determined at the time it is to be paid; provided, that
the Master Servicer shall have received confirmation from Standard & Poor's that
the arrangements with respect to the Supplemental Credit Enhancement Amount, if
any, will not result in the rating of the Investor Certificates of the Series
established hereby being withdrawn or lowered. In addition to the foregoing, the
Master Servicer shall notify Moody's of the occurrence of a Supplemental Credit
Enhancement Event as soon as practicable after such occurrence, and shall notify
Moody's in advance of its implementation of the form and provider of the
Supplemental Credit Enhancement Amount, if any.

      SECTION 12. Alternative Credit Support Election.

      (a) The Sellers may elect to effect a change in the calculation of the
Class Percentage with respect to Finance Charge Collections during the Early
Accumulation Period or the Amortization Period, as set forth in the definition
of "Class Percentage," and increase the Available Class B Credit Enhancement
Amount, by making an Alternative Credit Support Election. An Alternative Credit
Support Election may be made as follows:

            (i) at any time during the Revolving Period, Discover Bank on
      behalf of the Holder of the Seller Certificate shall deliver written
      notice of such Alternative Credit Support Election to the Rating Agencies,
      the Trustee and the Credit Enhancement Provider;

            (ii) prior to the last day of the Revolving Period, the Additional
      Credit Support Amount shall be paid to the Trustee as administrator of the
      Credit Enhancement for application in accordance with the provisions of
      the Credit Enhancement Agreement; provided, however, that following an
      Early Accumulation Event or an Amortization Event, the Additional Credit
      Support Amount may be paid to the Trustee as administrator of the Credit
      Enhancement at any time on or prior to the last day of the Due Period in
      which the Early Accumulation Event or the Amortization Event occurs;

            (iii).prior to the last day of the Revolving Period (or, following
      an Early Accumulation Event or an Amortization Event during the Revolving
      Period, on or prior to the last day of the Due Period in which the Early
      Accumulation Event or the Amortization Event occurs), the Rating Agencies
      shall have confirmed that the Alternative Credit Support Election shall
      not cause a reduction in or withdrawal of the rating of any Class of
      Investor Certificates of the Series established hereby; and

            (iv) prior to the last day of the Revolving Period (or, following
      an Early Accumulation Event or an Amortization Event during the Revolving
      Period, on or prior to the last day of the Due Period in which the Early
      Accumulation Event or the Amortization Event occurs), Discover Bank on
      behalf of the Holder of the Seller Certificate shall have delivered to the
      Rating Agencies written confirmation that the conclusions reached in the
      legal opinions delivered on the Initial Closing Date regarding the
      absolute transfer of the

                                       48
<PAGE>   59
      Receivables and the security interest of the Trust in the Receivables are
      not affected by the Alternative Credit Support Election.

      (b) If each of the actions set forth in Section 12(a) above has been taken
or satisfied as required, the Alternative Credit Support Election shall become
effective on the last day of the Due Period in which the Additional Credit
Support Amount has been paid to the Trustee as administrator of the Credit
Enhancement (an "Effective Alternative Credit Support Election").

      (c) At any time until the Alternative Credit Support Election becomes
effective, such Alternative Credit Support Election may be cancelled upon notice
to the Rating Agencies, the Trustee and the Credit Enhancement Provider.
Thereafter, the Additional Credit Support Amount, if any, shall be returned by
the Trustee as administrator of the Credit Enhancement in accordance with the
Credit Enhancement Agreement.

      SECTION 13. Calculation of Investor Losses.

      (a) For each Distribution Date, the Master Servicer shall calculate the
Class Investor Charged-Off Amount and the Class Cumulative Investor Charged-Off
Amount with respect to each Class, in each case as of the end of the related Due
Period.

      (b) If on any Distribution Date, the Class Investor Charged-Off Amount
with respect to any Class exceeds the Class Charge-Off Reimbursement Amount with
respect to such Class, the Class Investor Interest and the Class Invested Amount
for such Class shall each be reduced by the amount of such excess (an "Investor
Charge-Off Loss" with respect to such Class).

      (c) On each Distribution Date the Class Investor Interest and the Class
Invested Amount for each Class shall be increased by, and the amount of
aggregate unreimbursed Investor Losses for each such Class shall be decreased
by, the positive difference, if any, between the Class Charge-Off Reimbursement
Amount on such Distribution Date and the Class Investor Charged-Off Amount for
such Distribution Date; provided, however, that neither the Class Invested
Amount nor the Class Investor Interest shall exceed the Class Initial Investor
Interest for such Class minus the sum of (x) the aggregate amount of payments of
Certificate Principal paid to the Investor Certificateholders of such Class
prior to such Distribution Date, (y) in the case of the Class Investor Interest,
the amount on deposit in the Series Principal Funding Account for the benefit of
such Class in respect of Certificate Principal and (z) the aggregate amount of
losses, if any, on investments of principal of funds on deposit in the Series
Principal Funding Account for the benefit of such Class; and provided, further,
that the amount of Investor Losses with respect to any Class shall not be
reduced to an amount less than zero.

      SECTION 14.. Servicing Compensation. As compensation for its servicing
activities hereunder and under the Pooling and Servicing Agreement and
reimbursement of its expenses as set forth in Section 3.03 of the Pooling and
Servicing Agreement, the Master Servicer shall be entitled to receive a monthly
servicing fee with respect to the Series established hereby in respect of any
Due Period (or portion thereof) prior to the earlier of the date on which the
Series Investor Interest is reduced to zero and the Series Termination Date.
Such monthly servicing fees shall be composed of the Class Monthly Servicing
Fees and the Supplemental Servicing Fees, if any. The

                                       49
<PAGE>   60
Class Monthly Servicing Fees shall be paid to the Master Servicer on behalf of
each Class on each Distribution Date pursuant to Section 10. The Supplemental
Servicing Fee, if any, shall be paid to the Master Servicer on or before each
Distribution Date from the Series Additional Funds for such Distribution Date.
In no event shall the Trustee or the Investor Certificateholders be liable for
the Supplemental Servicing Fee.

      SECTION 15. Class Interest Rate Caps.

      (a) In the event that the Master Servicer has obtained a Class Interest
Rate Cap in favor of the Trustee for the benefit of a Class or Subclass that
does not have a fixed or maximum Certificate Rate, the Master Servicer hereby
represents that such Class Interest Rate Cap provides that (i) the Trust shall
not be required to make any payments thereunder and (ii) the Trust shall be
entitled to receive payments (determined in accordance with the Class Interest
Rate Cap) from the Interest Rate Cap Provider on an Interest Payment Date if
LIBOR or the Commercial Paper Rate, as applicable, for the related Calculation
Period exceeds the Class Cap Rate for the applicable Class or Subclass. Any
Class Interest Rate Cap Payment shall be deposited into the Series Interest
Funding Account.

      (b) In the event that the commercial paper or certificate of deposit
rating of the Interest Rate Cap Provider is withdrawn or reduced below the
ratings specified in the Series Term Sheet (or, in either case, such lower
rating as the applicable Rating Agency shall allow), then within 30 days after
receiving notice of such decline in the creditworthiness of the Interest Rate
Cap Provider as determined by either Rating Agency, either (x) the Interest Rate
Cap Provider, with the prior confirmation of the Rating Agencies that such
arrangement will not result in the reduction or withdrawal of the rating of any
Investor Certificates of the Series established hereby, will enter into an
arrangement the purpose of which shall be to assure performance by the Interest
Rate Cap Provider of its obligations under the Class Interest Rate Caps; or (y)
the Master Servicer shall at its option either (i) with the prior confirmation
of the Rating Agencies that such action will not result in a reduction or
withdrawal of the rating of any Investor Certificates of the Series established
hereby, cause the Interest Rate Cap Provider to pledge securities in the manner
provided by applicable law, which shall be held by the Trustee or its agent free
and clear of the Lien of any third party, in a manner conferring on the Trustee
a perfected first Lien in such securities securing the Interest Rate Cap
Provider's performance of its obligations under the Class Interest Rate Caps, or
(ii) provided that Replacement Class Interest Rate Caps or Qualified Substitute
Cap Arrangements meeting the requirements of Section 15(c) have been obtained,
direct the Trustee (A) to provide written notice to the Interest Rate Cap
Provider of its intention to terminate the Class Interest Rate Caps within such
30-day period and (B) to terminate the Class Interest Rate Caps within such
30-day period, to request the payment to it of all amounts due to the Trust
under the Class Interest Rate Caps through the termination date and to deposit
any such amounts so received, on the day of receipt, to the Series Interest
Funding Account, or (iii) establish any other arrangement (including an
arrangement or arrangements in addition to or in substitution for any prior
arrangement made in accordance with the provisions of this Section 15(b))
satisfactory to the Rating Agencies such that the Rating Agencies will not
reduce or withdraw the rating of any Investor Certificates of the Series
established hereby (a "Qualified Substitute Cap Arrangement"); provided,
however, that in the event at any time any alternative arrangement established
pursuant to clause (x) or (y)(i) or (y)(iii) above shall cease to be

                                       50
<PAGE>   61
satisfactory to the Rating Agencies then the provisions of this Section 15(b)
shall again be applied and in connection therewith the 30-day period referred to
above shall commence on the date the Master Servicer receives notice of such
cessation.

      (c) Unless an alternative arrangement pursuant to clause (x) or (y)(i) of
Section 15(b) is being established, the Master Servicer shall use its best
efforts to obtain Replacement Class Interest Rate Caps or Qualified Substitute
Cap Arrangements meeting the requirements of this Section 15(c) during the
30-day period referred to in Section 15(b). The Trustee shall not terminate the
Class Interest Rate Caps unless, prior to the expiration of the 30-day period
referred to in Section 15(b), the Master Servicer delivers to the Trustee (i)
Replacement Class Interest Rate Caps or Qualified Substitute Cap Arrangements,
(ii) to the extent applicable, an Opinion of Counsel as to the due
authorization, execution and delivery and validity and enforceability of each
such Replacement Class Interest Rate Cap or Qualified Substitute Cap
Arrangement, as the case may be, and (iii) confirmation from each Rating Agency
that the termination of the Class Interest Rate Caps and their replacement with
such Replacement Class Interest Rate Caps or Qualified Substitute Cap
Arrangements will not adversely affect its rating of the Investor Certificates
of the Series established hereby.

      (d) Master Servicer shall notify the Trustee, the Rating Agencies and the
Credit Enhancement Provider within five Business Days after obtaining knowledge
that the commercial paper or certificate of deposit rating of the Interest Rate
Cap Provider has been withdrawn or reduced by either Rating Agency.

      (e) Notwithstanding the foregoing, the Master Servicer may at any time
obtain Replacement Class Interest Rate Caps, provided that the Master Servicer
delivers to the Trustee (i) an Opinion of Counsel as to the due authorization,
execution and delivery and validity and enforceability of such Replacement Class
Interest Rate Caps and (ii) confirmation from the Rating Agencies that the
termination of the then current Class Interest Rate Caps and their replacement
with such Replacement Class Interest Rate Caps will not adversely affect the
rating of the Investor Certificates of the Series established hereby.

      (f) The Trustee hereby appoints the Master Servicer to perform the duties
of the calculation agent under the Class Interest Rate Caps and the Master
Servicer accepts such appointment.

      SECTION 16. Class Interest Rate Swaps. In the event that the Investor
Certificates of any Class are subject to a Class Interest Rate Swap, the Trust
will enter into a Class Interest Rate Swap in a form approved by the Master
Servicer. Pursuant to the terms of the Class Interest Rate Swap, the Interest
Rate Swap Counterparty shall pay to the Trust the Net Swap Receipt or the Trust
shall pay to the Interest Rate Swap Counterparty the Net Swap Payment, as
applicable. If the Trust does not receive payment from the Interest Rate Swap
Counterparty on each Interest Payment Date (if due), the Trustee, on behalf of
the Trust, shall attempt to determine from the Interest Rate Swap Counterparty
the reasons therefore and whether such payment is to be made by the Interest
Rate Swap Counterparty on such Interest Payment Date. If the Class Interest Rate
Swap has not been terminated and the Trust has not received any payment due from
the Interest

                                       51
<PAGE>   62
Rate Swap Counterparty on the related Interest Payment Date, the Trustee shall
notify the Master Servicer of such fact prior to 1:00 p.m. Chicago time on such
Interest Payment Date.

      SECTION 17. Investor Certificateholders' Monthly Statement. On each
Statement Date, a statement substantially in the form of Exhibit B prepared by
the Trustee (based on information provided by the Master Servicer) setting forth
the information listed thereon shall be available from the Trustee, each Paying
Agent and, if applicable, the Listing Agent.

      SECTION 18. Master Servicer's Monthly Certificate. On or before the second
Business Day preceding each Statement Date, the Master Servicer shall forward to
Discover Bank on behalf of the Holder of the Seller Certificate, the Trustee and
each Paying Agent a certificate of a Servicing Officer substantially in the form
of Exhibit C setting forth the information listed thereon.

      SECTION 19. Notices. Any notices to holders of Investor Certificates
issued in bearer form shall be given as described in the Series Term Sheet.

      SECTION 20. Additional Amortization Events. If any one of the following
events shall occur:

      (a) after giving effect to payments and distributions on the Class
Expected Final Payment Date or the Class Final Maturity Date, as applicable,
with respect to any Class, the Class Invested Amount for such Class is not
reduced to zero;

      (b) if applicable, following either (i) the withdrawal or reduction of the
commercial paper or certificate of deposit rating of any Interest Rate Cap
Provider to below the ratings specified in the Series Term Sheet (or, in either
case, such lower rating as the applicable Rating Agency has allowed) or (ii)
notice from either Rating Agency that any Qualified Substitute Cap Arrangement
or any other arrangement established pursuant to Section 15 is no longer
satisfactory to such Rating Agency, the Master Servicer shall fail, within the
applicable time period specified in Section 15, to (x) obtain Replacement Class
Interest Rate Caps or Qualified Substitute Cap Arrangements or (y) cause the
Interest Rate Cap Provider to pledge securities as collateral securing the
obligations of the Interest Rate Cap Provider or establish any other arrangement
as provided in Section 15, in each case in a manner satisfactory to the Trustee
and the Rating Agencies (such that neither Rating Agency will reduce or withdraw
the ratings of the Investor Certificates of the Series established hereby); or

      (c) if the amount of Principal Receivables in the Trust at the end of any
Due Period for three consecutive Due Periods of the Early Accumulation Period
shall be less than the Minimum Principal Receivables Balance and Discover Bank
shall have failed to assign Receivables in Additional Accounts or Participation
Interests to the Trust in at least the amount of the deficiency by the tenth day
of the calendar month of the following Due Period;

an Amortization Event shall occur with respect to the Investor Certificates of
the Series established hereby, immediately upon the occurrence of such event. If
an Amortization Event described in this Section 20 shall occur, this Section 20
constitutes written notice by the Trustee and not less than 51% of the Class
Invested Amount of each Class of the Series established hereby

                                       52
<PAGE>   63
to the Master Servicer and the Sellers that such Amortization Event has
occurred. No additional notice of any kind, which is hereby waived by the
Sellers and the Master Servicer, shall be required as a condition of the
occurrence of any Amortization Event described in this Section 20. In addition,
the events set forth in Section 21 shall constitute either Early Accumulation
Events or additional Amortization Events with respect to the Series established
hereby .

      SECTION 21. Early Accumulation Events; Additional Amortization Events. If
the Series established hereby is eligible to have an Early Accumulation Period,
each of the events described in clause (a), (b), (g), (i) or (j) of Section 9.01
of the Pooling and Servicing Agreement shall not be Amortization Events but
shall instead be Early Accumulation Events. In addition, for purposes of this
Series Supplement, each of the following events shall be (i) Early Accumulation
Events, if the Series established hereby is eligible to have an Early
Accumulation Period, or (ii) Amortization Events, if the Series established
hereby is not eligible to have an Early Accumulation Period:

      (a) on any Distribution Date, the three month rolling average Series
Excess Spread is less than the Series Buffer Amount and the three month rolling
average Group Excess Spread is less than the Group Buffer Amount;

      (b) if a Supplemental Credit Enhancement Event shall have occurred and
Discover Bank as Servicer shall have failed to arrange for the Supplemental
Credit Enhancement in accordance with the requirements of Section 11(c) hereof
(including, without limitation, receipt of the confirmation from Standard &
Poor's required thereby).

If any event described in clause (a), (b), (g), (i) or (j) of Section 9.01 of
the Pooling and Servicing Agreement occurs, an Early Accumulation Event shall
occur with respect to the Investor Certificates of such Class only if the event
has a material adverse effect on the Investor Certificateholders of such Class
and if, after the applicable grace period described in those clauses, either the
Trustee declares or the Investor Certificateholders of such Class evidencing
Fractional Undivided Interests aggregating not less than 51% of the Class
Invested Amount for either Class declare by written notice to Discover Bank and
the Master Servicer (and to the Trustee if given by the Investor
Certificateholders) that an Early Accumulation Event has occurred as of the date
of the notice. In the case of any event described in clause (a) or (b) of this
Section 21, an Early Accumulation Event shall occur with respect to the Investor
Certificates of such Class immediately upon the occurrence of the event without
any notice or other action on the part of the Trustee or the Investor
Certificateholders of such Class. On the date on which an Early Accumulation
Event is deemed to have occurred the Early Accumulation Period will commence.

      SECTION 22. Purchase of Investor Certificates and Series Termination.

      (a) If as of any Distribution Date during the Amortization Period (after
giving effect to any payments calculated pursuant to Section 9 made on such
Distribution Date) the Series Investor Interest of the Series established hereby
is less than or equal to 5% of the Series Initial Investor Interest, Discover
Bank on behalf of the Holder of the Seller Certificate may purchase and cancel
the Investor Certificates of the Series established hereby by depositing into
the Series Distribution Account, on the immediately succeeding Distribution
Date, an amount equal to the

                                       53
<PAGE>   64
Series Investor Interest as of the last day of the Due Period related to such
immediately succeeding Distribution Date. The Master Servicer shall direct the
Trustee in writing to withdraw the amount allocable to such Class from the
Series Distribution Account and pay such amount to the Investor
Certificateholders of such Class pursuant to Section 12.02 of the Pooling and
Servicing Agreement. All Investor Certificates of the Series established hereby
that are purchased by Discover Bank on behalf of the Holder of the Seller
Certificate pursuant to this Section 22(a) shall be delivered by Discover Bank
on behalf of the Holder of the Seller Certificate upon such purchase to, and be
cancelled by, the Transfer Agent and be disposed of in a manner satisfactory to
the Trustee and Discover Bank on behalf of the Holder of the Seller Certificate.

      (b) If as of any Distribution Date during the Accumulation Period, the
Early Accumulation Period or the Controlled Liquidation Period, as applicable
(after giving effect to any payments calculated pursuant to Section 9 made on
such Distribution Date), the Series Investor Interest of the Series established
hereby is less than or equal to 5% of the Series Initial Investor Interest
(before giving effect to any reduction in the Series Initial Investor Interest
pursuant to Section 6.14 of the Pooling and Servicing Agreement), Discover Bank
on behalf of the Holder of the Seller Certificate may, but shall not be
obligated to, purchase the Investor Certificates of the Series established
hereby by depositing into the Series Principal Funding Account, on such
Distribution Date, an amount equal to such Series Investor Interest. After
giving effect to such deposit, such Series Investor Interest shall be reduced to
zero, and the Seller Interest shall be increased by the amount of such deposit.

      (c) Following the sale of Receivables pursuant to Section 12.02 of the
Pooling and Servicing Agreement, the Master Servicer shall direct the Trustee in
writing to withdraw the amount allocable to each Class from the Series
Distribution Account and pay such amount to the Investor Certificateholders of
such Class pursuant to Section 12.02 of the Pooling and Servicing Agreement.

      SECTION 23. Variable Accumulation Period. If the Series Term Sheet for
the Series established hereby so provides, the Master Servicer may elect, by
written notice to the Trustee, Discover Bank on behalf of the Holder of the
Seller Certificate and the Credit Enhancement Provider, to delay the
commencement of the Accumulation Period, and extend the length of the Revolving
Period, subject to the conditions set forth in this Section 23; provided,
however, that the Accumulation Period shall commence no later than the first day
of the Due Period related to the Class A Expected Final Payment Date. Any such
election by the Master Servicer shall be made no later than the first day of the
last scheduled Due Period of the Revolving Period (including any prior extension
of the Revolving Period pursuant to this Section 23).

      The Master Servicer may make such election only if the following
conditions are satisfied: (i) the Master Servicer shall have delivered to the
Trustee a certificate to the effect that the Master Servicer reasonably believes
that the delay in the commencement of the Accumulation Period would not result
in the Class Invested Amount with respect to any Class of the Series established
hereby not being paid in full on the relevant Class Expected Final Payment Date;
(ii) the Rating Agencies shall have advised the Master Servicer and Discover
Bank on behalf of the Holder of the Seller Certificate that such election to
delay the commencement of the Accumulation Period would not cause the rating of
any Class of any Series then outstanding to be

                                       54
<PAGE>   65
lowered or withdrawn; and (iii) the amount to be deposited in the Series
Principal Funding Account in respect of the Accumulation Amount shall have been
adjusted.

      SECTION 24. Optional Accumulation Period Commencement. If the Series Term
Sheet for the Series established hereby so provides, unless the Amortization
Period or the Early Accumulation Period shall have commenced prior thereto, the
Master Servicer may elect to commence the Accumulation Period by delivering
written notice to the Trustee, Discover Bank, on behalf of the Holder of the
Seller Certificate and the Credit Enhancement Provider at least 5 Business Days
prior to the Accumulation Commencement Date subject to the conditions set forth
in this Section 24; provided, however, that the Accumulation Period shall
commence no later than the first day of the following Due Period. Such written
notice shall set forth the Accumulation Amount for each Distribution Date
relating to the Accumulation Period.

      SECTION 25. Series Yield Factor. The Series Yield Factor for the Series
established hereby shall initially be the Series Yield Factor set forth in the
Series Term Sheet. The Master Servicer may change the Series Yield Factor upon
20 days prior written notice to the Trustee, Discover Bank on behalf of the
Holder of the Seller Certificate, the Credit Enhancement Provider and the Rating
Agencies, provided that the following conditions are satisfied: (i) the Series
Yield Factor may not be reduced below the initial Series Yield Factor or
increased to more than a total of 0.05; (ii) the Master Servicer shall have
delivered to the Trustee a certificate to the effect that the Master Servicer
reasonably believes that the change in the Series Yield Factor would not (x)
result in any delay in the payment of principal to the Investor
Certificateholders of any Series then outstanding, or (y) cause an Amortization
Event or an Early Accumulation Event to occur with respect to any Series then
outstanding; and (iii) Standard & Poor's shall have advised the Master Servicer
and Discover Bank on behalf of the Holder of the Seller Certificate that such
change in the Series Yield Factor would not cause the rating of any Class of any
Series then outstanding to be lowered or withdrawn. Any such change shall be
effective as of the first day of the Due Period specified in the notice of the
Master Servicer.

      SECTION 26. Ratification of Pooling and Servicing Agreement. As
supplemented and amended by this Series Supplement, the Pooling and Servicing
Agreement is in all respects ratified and confirmed and the Pooling and
Servicing Agreement as so supplemented by this Series Supplement shall be read,
taken, and construed as one and the same instrument.

      SECTION 27. Counterparts. This Series Supplement may be executed in any
number of counterparts, each of which so executed shall be deemed to be an
original, but all of such counterparts shall together constitute but one and the
same instrument.

      SECTION 28. Governing Law. This Series Supplement shall be construed in
accordance with the internal laws of the State of New York, without reference to
its conflict of law provisions, and the obligations, rights and remedies of the
parties hereunder shall be determined in accordance with such laws.

      SECTION 29. Intention of Parties. The parties intend the sale, transfer,
assignment or conveyance of Receivables in connection herewith to be a sale of
financial assets in connection with a securitization, an absolute transfer for
all purposes (other than for federal, state and local income and franchise tax
purposes) and to be treated as a sale for accounting purposes.

                                       55
<PAGE>   66
                                   EXHIBIT A-1

                           FORM OF CLASS A CERTIFICATE

                 [FORM OF THE FACE OF THE CLASS A CERTIFICATES]

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

NO.                                                           $

                                                      CUSIP NO. ______________

                  DISCOVER CARD MASTER TRUST I, SERIES 2001 - 4
             FLOATING RATE CLASS A CREDIT CARD PASS-THROUGH CERTIFICATE

                                  DISCOVER BANK

                      MASTER SERVICER, SERVICER AND SELLER

(NOT AN INTEREST IN OR OBLIGATION OF DISCOVER BANK AND NOT INSURED OR GUARANTEED
BY THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY OTHER GOVERNMENTAL AGENCY.)

      This certifies that Cede & Co. (the "Class A Certificateholder") is the
registered owner of a Fractional Undivided Interest in the Discover Card Master
Trust I (the "Trust"), the corpus of which consists of a portfolio of
receivables (the "Receivables") existing as of the Cut-Off Date (or, with
respect to Receivables in Additional Accounts, as of the applicable Additional
Account Cut-Off Date) or thereafter created under certain open end credit card
accounts for specified Persons (the "Accounts") originated by Discover Bank
(formerly Greenwood Trust Company), a Delaware banking corporation ("Discover
Bank"), or an affiliate of Discover Bank, and transferred to the Trust by
Discover Bank or one or more Additional Sellers, all monies due or to become due
with respect thereto, all proceeds (as defined in Section 9-306 of the Uniform
Commercial Code as in effect in the Applicable State) of such Receivables
pursuant to a Pooling and Servicing Agreement, dated as of October 1, 1993, by
and between U.S. Bank National Association (formerly First Bank National
Association, successor trustee to Bank of America Illinois, formerly Continental
Bank, National Association) as Trustee (the "Trustee") and Discover

                                     A-1-1
<PAGE>   67
Bank as Master Servicer, Servicer and Seller, as amended (the "Pooling and
Servicing Agreement"), a summary of certain of the pertinent provisions of which
is set forth herein below, and benefits under any Credit Enhancement with
respect to any Series of investor certificates issued from time to time pursuant
to the Pooling and Servicing Agreement, to the extent applicable. Reference is
hereby made to the further provisions of this Class A Certificate set forth on
the reverse hereof, and such further provisions shall for all purposes have the
same effect as if set forth at this place.

      This Class A Certificate shall not be entitled to any benefit under the
Pooling and Servicing Agreement or any amendment thereto, or the Series
Supplement, dated as of April 17, 2001 (the "Series Supplement"), by and between
the Trustee and Discover Bank or any amendment thereto, or become vested or
obligatory for any purpose until the certificate of authentication hereon shall
have been signed by or on behalf of the Trustee under the Pooling and Servicing
Agreement.

                                     A-1-2
<PAGE>   68
      IN WITNESS WHEREOF, Discover Bank has caused this Class A Certificate to
be duly executed and authenticated.

                                  DISCOVER BANK

                                    By:____________________________________

                                     A-1-3
<PAGE>   69
                [FORM OF THE REVERSE OF THE CLASS A CERTIFICATES]

      It is the intent of the Sellers and the Investor Certificateholders that,
for federal, state and local income and franchise tax purposes only, the
Investor Certificates will be evidence of indebtedness of the Sellers. The
Sellers and the Class A Certificateholder, by the acceptance of this Class A
Certificate, agree to treat this Class A Certificate for federal, state and
local income and franchise tax purposes as indebtedness of the Sellers secured
by the Receivables and other assets held in the Trust.

      To the extent not defined herein, the capitalized terms used herein have
the meanings assigned in the Pooling and Servicing Agreement or the Series
Supplement. This Class A Certificate is issued under and is subject to the
terms, provisions and conditions of the Pooling and Servicing Agreement and the
Series Supplement, to which Pooling and Servicing Agreement and Series
Supplement, as each may be amended from time to time, the Class A
Certificateholder by virtue of the acceptance hereof assents and by which the
Class A Certificateholder is bound.

      This Class A Certificate is one of a series of Certificates entitled
"Discover Card Master Trust I, Series 2001 - 4 Floating Rate Class A Credit Card
Pass-Through Certificates" (the "Class A Certificates"), each of which
represents a Fractional Undivided Interest in the Trust including the right to
receive the Collections and other amounts at the times and in the amounts
specified in the Pooling and Servicing Agreement and the Series Supplement to be
deposited in the Investor Accounts with respect to Discover Card Master Trust I,
Series 2001 - 4 or paid to the Class A Certificateholders. Also issued under the
Pooling and Servicing Agreement and the Series Supplement are Investor
Certificates designated as "Discover Card Master Trust I, Series 2001 - 4
Floating Rate Class B Credit Card Pass-Through Certificates" (the "Class B
Certificates"). The Class A Certificates and the Class B Certificates are
collectively referred to herein as the Investor Certificates.

      The aggregate interest represented by the Class A Certificates at any time
in the assets of the Trust shall not exceed an amount equal to the Class A
Investor Interest at such time, plus accrued but unpaid Certificate Interest for
the Class A Certificates and any interest thereon. The Class Initial Investor
Interest of the Class A Certificates is $500,000,000. The Class A Invested
Amount on any Distribution Date will be an amount equal to the Class A Initial
Investor Interest minus the sum of (a) the aggregate amount of payments of
Certificate Principal paid to the Class A Certificateholders prior to such
Distribution Date, (b) the aggregate amount of Investor Losses for such Class
not reimbursed prior to such Distribution Date and (c) the aggregate amount of
losses of principal on investments in funds on deposit for the benefit of such
Class in the Series Principal Funding Account. In addition to the Investor
Certificates, a Seller Certificate has been issued pursuant to the Pooling and
Servicing Agreement which represents, at any time, the undivided interest in the
Trust not represented by the Investor Certificates or the investor certificates
of any other Series of investor certificates then outstanding. Subject to the
terms and conditions of the Pooling and Servicing Agreement, the Sellers may
from time to time direct the Trustee, on behalf of the Trust, to issue one or
more new Series of investor certificates, which will represent Fractional
Undivided Interests in the Trust.

                                     A-1-4
<PAGE>   70
      During the Revolving Period, which begins on the Series Cut-Off Date, and
during the Accumulation Period, Certificate Interest will be distributed on the
15th day of each calendar month with respect to interest accrued during the
preceding Interest Accrual Period, commencing in May 2001, or if such 15th day
is not a Business Day, on the next succeeding Business Day (an "Interest Payment
Date"), to the Class A Certificateholders of record as of the last day of the
month preceding the related Interest Payment Date. Principal on the Class A
Certificates is scheduled to be paid in a single payment on the Distribution
Date in April 2004 (the "Class A Expected Final Payment Date"), but may be paid
sooner or later and in installments if an Amortization Event occurs. During the
Amortization Period, if any, Certificate Interest and Certificate Principal
collected by the Master Servicer will be distributed to the Class A
Certificateholders on the Distribution Date of each calendar month, commencing
in the month following the commencement of the Amortization Period. In any
event, the final payment of principal of either class will be made no later than
the first Business Day following the Distribution Date in October 2006 (the
"Series Termination Date").

      The amount to be distributed on each Principal Payment Date to the holder
of this Class A Certificate will be equal to the product of (a) the percentage
equivalent of a fraction, the numerator of which is the portion of the Class A
Initial Investor Interest evidenced by this Class A Certificate and the
denominator of which is the Class A Initial Investor Interest and (b) the
aggregate of all payments to be made to the Class A Certificateholders on such
Distribution Date. Distributions with respect to this Class A Certificate will
be made by the Paying Agent by check mailed to the address of the Class A
Certificateholder of record appearing in the Certificate Register (except for
the final distribution in respect of this Class A Certificate) without the
presentation or surrender of this Class A Certificate or the making of any
notation thereon, except that with respect to Class A Certificates registered in
the name of Cede & Co., the nominee registrant for The Depository Trust Company,
distributions will be made in the form of immediately available funds.

      This Class A Certificate does not represent an obligation of, or an
interest in, the Master Servicer. This Class A Certificate is limited in right
of payment to certain Collections respecting the Receivables, all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement
and the Series Supplement.

      The Pooling and Servicing Agreement permits, with certain exceptions, the
amendment and modification of the rights and obligations of the Master Servicer,
and the rights of Investor Certificateholders under the Pooling and Servicing
Agreement and Series Supplement, at any time by the Master Servicer, the Sellers
and the Trustee in certain cases (some of which require confirmation from the
Rating Agencies that such amendment will not result in the downgrading or
withdrawal of the rating assigned to the Investor Certificates) without the
consent of the Investor Certificateholders, and in all other cases with the
consent of the Investor Certificateholders owning Fractional Undivided Interests
aggregating not less than 66-2/3% of the Class Invested Amount of each such
affected Class (and with confirmation from the Rating Agencies that such
amendment will not result in the downgrading or withdrawal of the rating
assigned to the Investor Certificates); provided, however, that no such
amendment shall (a) have a material adverse effect on any Class of Investor
Certificateholders by reducing in any manner the amount of, or delaying the
timing of, distributions which are required to be made on any Investor
Certificate without the

                                     A-1-5
<PAGE>   71
consent of the affected Investor Certificateholders or (b) reduce the aforesaid
percentage required to consent to any such amendment, without the consent of
each Investor Certificateholder of each affected Class then of record; and
provided, further, that the permitted activities of the Trust may be
significantly changed only with the consent of the Holders of Investor
Certificates evidencing Fractional Undivided Interests aggregating not less than
51% of the Aggregate Invested Amount. Any such amendment and any such consent by
the Class A Certificateholder shall be conclusive and binding on such Class A
Certificateholder and upon all future Holders of this Class A Certificate and of
any Class A Certificate issued in exchange hereof or in lieu hereof whether or
not notation thereof is made upon this Class A Certificate.

      The transfer of this Class A Certificate shall be registered in the
Certificate Register upon surrender of this Investor Certificate for
registration of transfer at any office or agency maintained by the Transfer
Agent and Registrar accompanied by a written instrument of transfer in a form
satisfactory to the Trustee and the Transfer Agent and Registrar duly executed
by the Class A Certificateholder or such Class A Certificateholder's attorney
duly authorized in writing, and thereupon one or more new Class A Certificates
of authorized denominations and for the same aggregate Fractional Undivided
Interest will be issued to the designated transferee or transferees.

      As provided in the Pooling and Servicing Agreement and subject to certain
limitations therein set forth, Class A Certificates are exchangeable for new
Class A Certificates evidencing like aggregate Fractional Undivided Interests,
as requested by the Class A Certificateholder surrendering such Class A
Certificates. No service charge may be imposed for any such exchange but the
Master Servicer or Transfer Agent and Registrar may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in
connection therewith.

      The Master Servicer, the Trustee, the Paying Agent and the Transfer Agent,
and any agent of any of them, may treat the person in whose name this Class A
Certificate is registered as the owner hereof for all purposes, and neither the
Master Servicer, the Trust nor the Trustee, the Paying Agent, the Transfer
Agent, nor any agent of any of them or any such agent shall be affected by
notice to the contrary except in certain circumstances described in the Pooling
and Servicing Agreement.

      Subject to certain conditions in the Pooling and Servicing Agreement and
the Series Supplement, if the principal of the Investor Certificates has not
been paid in full prior to the Series Termination Date, the obligations created
by the Pooling and Servicing Agreement and the Series Supplement with respect to
the Investor Certificates shall terminate on the Series Termination Date.

                [FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION]

      This is one of the Class A Certificates referred to in the within
mentioned Pooling and Servicing Agreement and Series Supplement.

                                    U.S. BANK NATIONAL ASSOCIATION, as Trustee

                                    By:____________________________________
                                                Authorized Officer

                                     A-1-6
<PAGE>   72
                                   EXHIBIT A-2

                           FORM OF CLASS B CERTIFICATE

                 [FORM OF THE FACE OF THE CLASS B CERTIFICATES]

      UNLESS THIS CLASS B CERTIFICATE IS PRESENTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY TO THE ISSUER OR ITS AGENT FOR
REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CLASS B CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED
BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT
IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.

NO.                                                          $

                                                    CUSIP NO. ________________

      THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A
CERTIFICATES AND TO THE RIGHTS OF THE MASTER SERVICER AS DESCRIBED IN THE
POOLING AND SERVICING AGREEMENT AND SERIES SUPPLEMENT REFERRED TO HEREIN.

                  DISCOVER CARD MASTER TRUST I, SERIES 2001 - 4
           FLOATING RATE CLASS B CREDIT CARD PASS-THROUGH CERTIFICATE

                                  DISCOVER BANK
                      MASTER SERVICER, SERVICER AND SELLER

(NOT AN INTEREST IN OR OBLIGATION OF DISCOVER BANK AND NOT INSURED OR GUARANTEED
BY THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY OTHER GOVERNMENTAL AGENCY.)

      THIS INVESTOR CERTIFICATE MAY NOT BE ACQUIRED BY OR FOR THE ACCOUNT OF ANY
EMPLOYEE BENEFIT PLAN (AS DEFINED BELOW).

      This certifies that Cede & Co. (the "Class B Certificateholder") is the
registered owner of a Fractional Undivided Interest in the Discover Card Master
Trust I (the "Trust"), the corpus of which consists of a portfolio of
receivables (the "Receivables") existing as of the Cut-Off Date (or, with
respect to Receivables in Additional Accounts, as of the applicable Additional
Account Cut-Off Date) or thereafter created under certain open end credit card
accounts for specified
<PAGE>   73
Persons (the "Accounts") originated by Discover Bank (formerly Greenwood Trust
Company), a Delaware banking corporation ("Discover Bank"), or an affiliate of
Discover Bank, and transferred to the Trust by Discover Bank or one or more
Additional Sellers, all monies due or to become due with respect thereto, all
proceeds (as defined in Section 9-306 of the Uniform Commercial Code as in
effect in the Applicable State) of such Receivables pursuant to a Pooling and
Servicing Agreement, dated as of October 1, 1993, by and between U.S. Bank
National Association (formerly First Bank National Association, successor
trustee to Bank of America Illinois, formerly Continental Bank, National
Association) as Trustee (the "Trustee") and Discover Bank as Master Servicer,
Servicer and Seller, as amended (the "Pooling and Servicing Agreement"), a
summary of certain of the pertinent provisions of which is set forth herein
below, and benefits under any Credit Enhancement with respect to any Series of
investor certificates issued from time to time pursuant to the Pooling and
Servicing Agreement, to the extent applicable. Reference is hereby made to the
further provisions of this Class B Certificate set forth on the reverse hereof,
and such further provisions shall for all purposes have the same effect as if
set forth at this place.

      This Class B Certificate shall not be entitled to any benefit under the
Pooling and Servicing Agreement or any amendment thereto, or the Series
Supplement, dated as of April 17, 2001 (the "Series Supplement"), by and between
the Trustee and Discover Bank or any amendment thereto, or become vested or
obligatory for any purpose until the certificate of authentication hereon shall
have been signed by or on behalf of the Trustee under the Pooling and Servicing
Agreement.

      IN WITNESS WHEREOF, Discover Bank has caused this Class B Certificate to
be duly executed and authenticated.

                                  DISCOVER BANK

                                    By:____________________________

                                     A-2-2
<PAGE>   74
                [FORM OF THE REVERSE OF THE CLASS B CERTIFICATES]

      It is the intent of the Sellers and the Investor Certificateholders that,
for federal, state and local income and franchise tax purposes only, the
Investor Certificates will be evidence of indebtedness of the Sellers. The
Sellers and the Class B Certificateholder, by the acceptance of this Class B
Certificate, agree to treat this Class B Certificate for federal, state and
local income and franchise tax purposes as indebtedness of the Sellers secured
by the Receivables and other assets held in the Trust.

      To the extent not defined herein, the capitalized terms used herein have
the meanings assigned in the Pooling and Servicing Agreement or the Series
Supplement. This Class B Certificate is issued under and is subject to the
terms, provisions and conditions of the Pooling and Servicing Agreement and the
Series Supplement, to which Pooling and Servicing Agreement and Series
Supplement, as each may be amended from time to time, the Class B
Certificateholder by virtue of the acceptance hereof assents and by which the
Class B Certificateholder is bound.

      This Class B Certificate is one of a series of Certificates entitled
"Discover Card Master Trust I, Series 2001 - 4 Floating Rate Class B Credit Card
Pass-Through Certificates" (the "Class B Certificates"), each of which
represents a Fractional Undivided Interest in the Trust including the right to
receive the Collections and other amounts at the times and in the amounts
specified in the Pooling and Servicing Agreement and the Series Supplement to be
deposited in the Investor Accounts with respect to Discover Card Master Trust I,
Series 2001 - 4 or paid to the Class B Certificateholders. Also issued under the
Pooling and Servicing Agreement and the Series Supplement are Investor
Certificates designated as "Discover Card Master Trust I, Series 2001 - 4
Floating Rate Class A Credit Card Pass-Through Certificates" (the "Class A
Certificates"). The Class A Certificates and the Class B Certificates are
collectively referred to herein as the Investor Certificates.

      The aggregate interest represented by the Class B Certificates at any time
in the assets of the Trust shall not exceed an amount equal to the Class
Investor Interest of the Class B Certificates at such time, plus accrued but
unpaid Certificate Interest for the Class B Certificates and any interest
thereon. The Class B Certificateholders are also entitled to the benefit of the
Credit Enhancement, to the extent provided in the Series Supplement. The Class
Initial Investor Interest of the Class B Certificates is $26,316,000. The Class
B Invested Amount on any Distribution Date will be an amount equal to the Class
B Initial Investor Interest minus the sum of (a) the aggregate amount of
payments of Certificate Principal paid to the Class B Certificateholders prior
to such Distribution Date, (b) the aggregate amount of Investor Losses for such
Class not reimbursed prior to such Distribution Date and (c) the aggregate
amount of losses of principal on investments in funds on deposit for the benefit
of such Class in the Series Principal Funding Account. In addition to the
Investor Certificates, a Seller Certificate has been issued pursuant to the
Pooling and Servicing Agreement which represents, at any time, the undivided
interest in the Trust not represented by the Investor Certificates or the
investor certificates of any other Series of investor certificates then
outstanding. Subject to the terms and conditions of the Pooling and Servicing
Agreement, the Sellers may from time to time direct the

                                     A-2-4
<PAGE>   75
Trustee, on behalf of the Trust, to issue one or more new Series of investor
certificates, which will represent Fractional Undivided Interests in the Trust.

      During the Revolving Period, which begins on the Series Cut-Off Date, and
during the Accumulation Period, Certificate Interest will be distributed on the
15th day of each calendar month with respect to interest accrued during the
preceding Interest Accrual Period, commencing in May 2001, or if such 15th day
is not a Business Day, on the next succeeding Business Day, and on the Class B
Expected Final Payment Date (each, an "Interest Payment Date"), to the Class B
Certificateholders of record as of the last day of the month preceding the
related Interest Payment Date. Principal on the Class B Certificates is
scheduled to be paid in a single payment on the Distribution Date in May 2004
(the "Class B Expected Final Payment Date"), but may be paid sooner or later or
in installments under certain circumstances. During the Amortization Period, if
any, Certificate Interest and Certificate Principal collected by the Master
Servicer will be distributed to the Class B Certificateholders on the
Distribution Date of each calendar month, commencing in the month following the
commencement of the Amortization Period; provided, however, that no Certificate
Principal will be distributed to the Class B Certificateholders until the Class
A Investor Interest has been reduced to zero. The rights of the Class B
Certificateholders to receive the distributions to which they would otherwise be
entitled on the Receivables will be subordinated to the rights of the Class A
Certificateholders and the Master Servicer to the extent described in the
Pooling and Servicing Agreement and Series Supplement. In any event, the final
payment of principal of either Class will be made no later than the first
Business Day following the Distribution Date in October 2006 (the "Series
Termination Date").

      The amount to be distributed on each Distribution Date to the holder of
this Class B Certificate will be equal to the product of (a) the percentage
equivalent of a fraction, the numerator of which is the portion of the Class B
Initial Investor Interest evidenced by this Class B Certificate and the
denominator of which is the Class B Initial Investor Interest and (b) the
aggregate of all payments to be made to the Class B Certificateholders on such
Distribution Date. Distributions with respect to this Class B Certificate will
be made by the Paying Agent by check mailed to the address of the Class B
Certificateholder of record appearing in the Certificate Register (except for
the final distribution in respect of this Class B Certificate) without the
presentation or surrender of this Class B Certificate or the making of any
notation thereon, except that with respect to Class B Certificates registered in
the name of Cede & Co., the nominee registrant for The Depository Trust Company,
distributions will be made in the form of immediately available funds.

      This Class B Certificate does not represent an obligation of, or an
interest in, the Master Servicer. This Class B Certificate is limited in right
of payment to certain Collections respecting the Receivables, all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement
and the Series Supplement.

      The Pooling and Servicing Agreement permits, with certain exceptions, the
amendment and modification of the rights and obligations of the Master Servicer,
and the rights of Investor Certificateholders under the Pooling and Servicing
Agreement and Series Supplement, at any time by the Master Servicer, the Sellers
and the Trustee in certain cases (some of which require

                                     A-2-5
<PAGE>   76
confirmation from the Rating Agencies that such amendment will not result in the
downgrading or withdrawal of the rating assigned to the Investor Certificates)
without the consent of the Investor Certificateholders, and in all other cases
with the consent of the Investor Certificateholders owning Fractional Undivided
Interests aggregating not less than 66-2/3% of the Class Invested Amount of each
such affected Class (and with confirmation from the Rating Agencies that such
amendment will not result in the downgrading or withdrawal of the rating
assigned to the Investor Certificates); provided, however, that no such
amendment shall (a) have a material adverse effect on any Class of Investor
Certificateholders by reducing in any manner the amount of, or delaying the
timing of, distributions which are required to be made on any Investor
Certificate without the consent of the affected Investor Certificateholders or
(b) reduce the aforesaid percentage required to consent to any such amendment,
without the consent of each Investor Certificateholder of each affected Class
then of record; and provided, further, that the permitted activities of the
Trust may be significantly changed only with the consent of the Holders of
Investor Certificates evidencing Fractional Undivided Interests aggregating not
less than 51% of the Aggregate Invested Amount. Any such amendment and any such
consent by the Class B Certificateholder shall be conclusive and binding on such
Class B Certificateholder and upon all future Holders of this Class B
Certificate and of any Class B Certificate issued in exchange hereof or in lieu
hereof whether or not notation thereof is made upon this Class B Certificate.

      The transfer of this Class B Certificate shall be registered in the
Certificate Register upon surrender of this Investor Certificate for
registration of transfer at any office or agency maintained by the Transfer
Agent and Registrar accompanied by a written instrument of transfer in a form
satisfactory to the Trustee and the Transfer Agent and Registrar duly executed
by the Class B Certificateholder or such Class B Certificateholder's attorney
duly authorized in writing, and thereupon one or more new Class B Certificates
of authorized denominations and for the same aggregate Fractional Undivided
Interest will be issued to the designated transferee or transferees.

      The transfer of this Investor Certificate is subject to certain
restrictions set forth in the Pooling and Servicing Agreement. In no event shall
this Investor Certificate, or any interest therein, be transferred to an
employee benefit plan, trust or account subject to the Employee Retirement
Income Security Act of 1974, as amended ("ERISA"), or described in Section
4975(e)(1) of the Internal Revenue Code of 1986, as amended (the "Code"), and
not excepted under Section 4975(g). Any Holder of this Investor Certificate, by
its acceptance hereof, shall be deemed to represent and warrant that it is not
(i) an employee benefit plan (as defined in Section 3(3) of ERISA), that is
subject to Title I of ERISA, (ii) a plan described in Section 4975(e)(l) of the
Code, and not excepted under Section 4975(g), or (iii) an entity using assets to
purchase such Certificates which constitute plan assets by reason of a plan's
investment in such Holder.

      As provided in the Pooling and Servicing Agreement and subject to certain
limitations therein set forth, Class B Certificates are exchangeable for new
Class B Certificates evidencing like aggregate Fractional Undivided Interests,
as requested by the Class B Certificateholder surrendering such Class B
Certificates. No service charge may be imposed for any such exchange but the
Master Servicer or Transfer Agent and Registrar may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in
connection therewith.

                                     A-2-6
<PAGE>   77
      The Master Servicer, the Trustee, the Paying Agent and the Transfer Agent,
and any agent of any of them, may treat the person in whose name this Class B
Certificate is registered as the owner hereof for all purposes, and neither the
Master Servicer, the Trust nor the Trustee, the Paying Agent, the Transfer
Agent, nor any agent of any of them or any such agent shall be affected by
notice to the contrary except in certain circumstances described in the Pooling
and Servicing Agreement.

      Subject to certain conditions in the Pooling and Servicing Agreement and
the Series Supplement, if the principal of the Investor Certificates has not
been paid in full prior to the Series Termination Date, the obligations created
by the Pooling and Servicing Agreement and the Series Supplement with respect to
the Investor Certificates shall terminate on the Series Termination Date.

                [FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION]

      This is one of the Class B Certificates referred to in the within
mentioned Pooling and Servicing Agreement and Series Supplement.

                                    U.S. BANK NATIONAL ASSOCIATION, as Trustee

                                    By:____________________________________
                                                Authorized Officer

                                     A-2-7
<PAGE>   78
                                    Exhibit B

             Form of Investor Certificateholders' Monthly Statement

                          Discover Card Master Trust I

                        Series 2001 - 4 Monthly Statement

Distribution Date:  __________ __, ____        Month Ending:__________ __, ____

Pursuant to the Series Supplement dated as of April 17, 2001 relating to the
Pooling and Servicing Agreement dated as of October 1, 1993 by and between
Discover Bank and U.S. Bank National Association as Trustee, as amended, the
Trustee is required to prepare certain information each month regarding current
distributions to investors and the performance of the Trust. We have set forth
below this information for the Distribution Date listed above, as well as for
the calendar month ended on the date listed above.

1.    Payments for the benefit of investors in Series 2001 - 4 on this
      Distribution Date (per $1,000 of Class Initial Investor Interest)

<TABLE>
<CAPTION>
                                       Total                  Interest                 Principal
<S>                                 <C>                     <C>                      <C>
      Series 2001 - 4
         Class A (__days at ___%)   $____________           $____________            $____________

         Class B (__ days at ___%)  $____________           $____________            $____________
</TABLE>

2.    Principal Receivables at the end of [Month][Year]

<TABLE>
<S>                                                                                  <C>
      (a)   Aggregate Investor Interest                                              $____________

            Seller Interest                                                          $____________

            TOTAL MASTER TRUST                                                       $____________

      (b)   Group One Investor Interest                                              $____________

      (c)   Series 2001 - 4 Series Investor Interest                                 $____________

      (d)   Class A Investor Interest                                                $____________

            Class B Investor Interest                                                $____________
</TABLE>

3.    Allocation of Receivables collected during [Month][Year]

<TABLE>
<CAPTION>
                                                 Finance Charge                Principal            Yield Collections/
                                                  Collections       Collections Additional Funds
<S>                                              <C>                <C>                             <C>
      (a)   Allocation of Collections between
            Investors and Seller

            Aggregate Investor Allocation         $____________              $___________                      N/A

            Seller Allocation                     $____________              $___________                      N/A

      (b)   Group One Allocation                  $____________              $___________                      N/A

      (c)   Series 2001 - 4 Allocations           $____________              $___________                      N/A

      (d)   Class A Allocations                   $____________              $___________                      N/A

            Class B Allocations                   $____________              $___________                      N/A
</TABLE>

<TABLE>
<S>                                                                                     <C>
      (e)   Principal Collections as a monthly percentage of Master Trust
            Receivables at the beginning of [Month][Year]                                ____________%

      (f)   Finance Charge Collections as an annualized percentage of Master
            Trust Receivables at the beginning of [Month][Year]                          ____________%
</TABLE>

                                      B-1
<PAGE>   79
<TABLE>
<S>                                                                                     <C>
      (g)   Total Collections as a monthly percentage of Master Trust Receivables
            at the beginning of [Month][Year]                                             ____________%
</TABLE>

4.    Information concerning the Series Principal Funding Accounts ("SPFA")

<TABLE>
<CAPTION>
                           Deposits into the SPFAs on     Deficit Amount on
                             this Distribution Date      this Distribution Date        SPFA Balance     Investment Income
<S>                        <C>                           <C>                           <C>              <C>
      Series 2001 - 4              $________                     $______                $________          $_________
</TABLE>

5.    Information concerning amount of Controlled Liquidation Payments

<TABLE>
<CAPTION>
                            Amount paid on         Deficit Amount     Total Payments
                                 this                 on this          through this
                           Distribution Date     Distribution Date    Distribution Date
<S>                       <C>                    <C>                  <C>
      Series 2001 - 4              N/A                   N/A                N/A
</TABLE>

6.    Information concerning the Series Interest Funding Accounts ("SIFA")

                                    Deposits into the SIFA
                                    on this Distribution Date      SIFA Balance

      Series 2001 - 4                           N/A                    N/A

7.    Investor Charged-Off Amount

<TABLE>
<CAPTION>
                                              This Distribution   Cumulative Investor
                                                     Date         Charged-Off Amount
<S>                                           <C>                 <C>
      (a)   Group One                           $_________            $_________

      (b)   Series 2001 - 4                     $_________            $_________

      (c)   Class A                             $_________            $_________

            Class B                             $_________            $_________

      (d)   As an annualized percentage of
            Principal Receivables at the
            beginning of [Month][Year]           __________%               N/A
</TABLE>

8.    Investor Losses on this Distribution Date

<TABLE>
<CAPTION>
                                    Total             per $1,000 of original
                                                      invested Principal
<S>                                 <C>               <C>
      (a)   Group One               $_________              $_________

      (b)   Series 2001 - 4         $_________              $_________

      (c)   Class A                 $_________              $_________

            Class B                 $_________              $_________
</TABLE>

                                      B-2
<PAGE>   80
9.    Reimbursement of Investor Losses on this Distribution Date

<TABLE>
<CAPTION>
                                    Total             per $1,000 of original
                                                      invested Principal
<S>                                 <C>               <C>
      (a)   Group  One              $_________        $_________

      (b)   Series 2001 - 4         $_________        $_________

      (c)   Class A                 $_________        $_________

            Class B                 $_________        $_________
</TABLE>

10.   Aggregate amount of Unreimbursed Investor Losses

<TABLE>
<CAPTION>
                                    Total             per $1,000 of original
                                                      invested Principal
<S>                                 <C>               <C>
      (a)   Group One               $_________        $_________

      (b)   Series 2001 - 4         $_________        $_________

      (c)   Class A                 $_________        $_________

            Class B                 $_________        $_________
</TABLE>

11.   Investor Monthly Servicing Fee payable on this Distribution Date

<TABLE>
<S>                                       <C>
      (a)   Group One                     $_________

      (b)   Series 2001 - 4               $_________

      (c)   Class A                       $_________

            Class B                       $_________
</TABLE>

12.   Class Available Subordinated Amount at the end of the Distribution Date

<TABLE>
<CAPTION>
                                    Total             as percentage of Class A
                                                      Invested Amount
<S>                                 <C>               <C>
      Series 2001 - 4, Class B      $____________           ________ %
</TABLE>

13.   Total Available Credit Enhancement Amounts

<TABLE>
<CAPTION>
                                                       Shared Amount           Class B Amount
<S>                                                    <C>                     <C>
      (a)   Maximum Amount                                  N/A                  $__________

      (b)   Available Amount                                N/A                  $__________

      (c)   Amount of drawings on Credit
            Enhancement on this Distribution Date           N/A                  $__________

      (d)   Credit Enhancement Fee on this
            Distribution Date                               N/A                  $__________
</TABLE>

14.   Delinquency Summary

<TABLE>
<S>                                                                              <C>
      Master Trust Receivables Outstanding at the end of [Month][Year]           $__________
</TABLE>

<TABLE>
<CAPTION>
                                          Delinquent Amount       Percentage of ending
      Payment Status                      ending balance          Receivables outstanding
<S>                                       <C>                     <C>
      30 - 59 days                        $__________________           __________%
</TABLE>

                                      B-3
<PAGE>   81
<TABLE>
<S>                                       <C>                     <C>
      60 - 179 days                       $__________________            __________%
</TABLE>

15.   Excess Spread Percentages on this Distribution Date(1)

      (a)   Group One(2)                    __________%

      (b)   Series 2001 - 4(3)              __________%

16.   Net Charge-Offs on this Distribution Date

      Charges-offs net of recoveries as an annualized percentage
      of Principal Receivables at the beginning of [Month][Year](4)  __________%

                                          U.S. BANK NATIONAL ASSOCIATION,
                                          as Trustee

                                          By:__________________________________

(1)   For series in Group One, investors should refer only to the higher of the
      Group Excess Spread Percentage (Item 15(a)) and the Series Excess Spread
      Percentage (Item 15(b)) in assessing the current performance of the Trust
      and the Receivables.

(2)   Group Excess Spread is the sum of the Series Excess Spreads (as described
      below) for each series in the Group. The Group Excess Spread Percentage is
      equal to the Group Excess Spread, multiplied by twelve, divided by the
      Series Investor Interests for each series in the Group.

(3)   Series Excess Spread is the difference between (a) the sum of Finance
      Charge Collections, Yield Collections, Additional Funds and Investment
      Income for any Class of this Series (see Item 3(c)), and (b) the sum of
      (i) the monthly interest for each Class of this Series (see Item 1), (ii)
      the monthly servicing fee for each Class of this Series (see Item 11(b)),
      (iii) the Investor Charged-Off Amount (see Item 8(b)), and (iv) the Credit
      Enhancement Fee (see Item 13(d)), in each case for this Distribution Date.
      The Series Excess Spread Percentage is equal to the Series Excess Spread,
      multiplied by twelve, divided by the Series Investor Interest for this
      Series.

(4)   For purposes of allocations to investors, recoveries are treated as
      Finance Charge Collections and are included as such in Item 3 above.

                                      B-4

<PAGE>   82
                                    Exhibit C

                   Form of Master Servicer's Monthly Certificate

                   Discover Card Master Trust I, Series 2001 - 4

                                   CREDIT CARD

                            PASS-THROUGH CERTIFICATES

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

The undersigned, a duly authorized representative of Discover Bank, formerly
Greenwood Trust Company ("Discover Bank"), as Master Servicer pursuant to the
Pooling and Servicing Agreement dated as of October 1, 1993, as amended (the
"Pooling and Servicing Agreement"), and the Series Supplement, dated as of April
17, 2001 (the "Series Supplement") by and between Discover Bank and U.S. Bank
National Association (formerly First Bank National Association, successor
trustee to Bank of America Illinois, formerly Continental Bank, National
Association) as Trustee, does hereby certify as follows with respect to the
Series Supplement for the Discover Card Master Trust I, Series 2001 - 4
Certificates for the Distribution Date occurring on _______________:

<TABLE>
<S>                                                                                  <C>
1.    Discover Bank is Master Servicer under the Pooling and Servicing Agreement.

2.    The undersigned is a Servicing Officer of Discover Bank as Master Servicer.

3     The aggregate amount of Collections processed during [month] [year]
      is equal to...........................................................         $_____

4.    The aggregate amount of Class A Principal Collections processed during
      [month] [year] is equal to............................................         $_____

5.    The aggregate amount of Class A Finance Charge Collections processed
      during [month] [year] is equal to.....................................         $_____

6a.   The aggregate amount of Class A Principal Collections recharacterized
      as Series Yield Collections during [month] [year] is equal
      to....................................................................         $_____

6b.   The aggregate amount of Class A Additional Funds for this Distribution
      Date is equal to......................................................         $_____
</TABLE>

                                      C-1
<PAGE>   83
<TABLE>
<S>                                                                                  <C>
7.    The sum of all amounts payable to the Class A Certificate-holders on
      the current Distribution Date is equal to.............................         $_____

8.    The aggregate amount of Class B Principal Collections processed during
      [month] [year] is equal to............................................         $_____

9.    The aggregate amount of Class B Finance Charge Collections processed
      during [month] [year] is equal to.....................................         $_____

10a.  The aggregate amount of Class B Principal Collections recharacterized as
      Series Yield Collections during [month] [year] is.....................         $_____

10b.  The aggregate amount of Class B Additional Funds for this Distribution
      Date is equal to .....................................................         $_____

11.   The amount of drawings under the Credit Enhancement required to be made on
      the related Drawing Date pursuant to the Series Supplement:

      (a)   with respect to the Class B Required Amount Shortfall is equal to        $_____

      (b)   with respect to the Class B Cumulative Investor Charged-Off Amount
            is equal to......................................................        $_____

      (c)   with respect to the Class B Investor Interest is equal to.......         $_____

12.   The sum of all amounts payable to the Class B Certificate-holders on
      the current Distribution Date is equal to.............................         $_____

13.   Attached hereto is a true copy of the statement required to be delivered
      by the Master Servicer on the date of this Certificate to the Trustee
      pursuant to Section 19 of the Series Supplement.
</TABLE>

      IN WITNESS WHEREOF, the undersigned has duly executed and delivered this
certificate this ____ day of ____________, ____.

                                          DISCOVER BANK,
                                            as Master Servicer

                                          By:_____________________________
                                             Title:

                                      C-2<PAGE>   1
                                                                     Exhibit 4.2

                          CREDIT ENHANCEMENT AGREEMENT

                                      AMONG

                         U.S. BANK NATIONAL ASSOCIATION

                                   AS TRUSTEE,

                                  DISCOVER BANK

                     AS MASTER SERVICER, SERVICER AND SELLER

                                       AND

                   DISCOVER RECEIVABLES FINANCING CORPORATION

                         AS CREDIT ENHANCEMENT PROVIDER

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

                           DATED AS OF APRIL 17, 2001

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

                          DISCOVER CARD MASTER TRUST I

                                  SERIES 2001-4
<PAGE>   2
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                                       PAGE
                                                                                                                       ----
<S>                                                                                                                    <C>
Section 1. Defined Terms.........................................................................................       1

Section 2. Loan..................................................................................................       2

Section 3. Calculation of Amount of Interest Payable on the Loan.................................................       3

Section 4. Payment of Interest on the Loan.......................................................................       3

Section 5. Repayment of Principal of the Loan....................................................................       4

Section 6. Payments to the Holder of the Seller Certificate and the Master Servicer..............................       4

Section 7. Deposits to and Withdrawals from the Credit Enhancement Account.......................................       5

Section 8. Certain Additional Loans..............................................................................       6

Section 9. Limited Obligation; Waiver of Setoff; Obligations Absolute............................................       6

Section 10. Investments and Information..........................................................................       7

Section 11. Servicing Transfer...................................................................................       7

Section 12. Representations and Warranties.......................................................................       8

Section 13. Covenants............................................................................................       9

Section 14. Governing Law........................................................................................       9

Section 15. Termination..........................................................................................       9

Section 16. Notices..............................................................................................       9

Section 17. Bankruptcy...........................................................................................      11

Section 18. Limitation of Remedies...............................................................................      10

Section 19. No Petition..........................................................................................      11

Section 20. Amendments...........................................................................................      11

Section 21. Successors and Assigns; Replacement of Credit Enhancement Provider...................................      12

Section 22. Participation........................................................................................      12
</TABLE>
<PAGE>   3
                  CREDIT ENHANCEMENT AGREEMENT, dated as of April 17, 2001,
among U.S. BANK NATIONAL ASSOCIATION (formerly First Bank National Association,
successor trustee to Bank of America Illinois, formerly Continental Bank,
National Association) as trustee (together with its successors and assigns as
trustee, the "Trustee") for Discover Card Master Trust I (the "Trust"), DISCOVER
BANK (formerly Greenwood Trust Company) ("Discover Bank") as Master Servicer,
Servicer and Seller with respect to the Trust and DISCOVER RECEIVABLES FINANCING
CORPORATION as cash collateral depositor (the "Credit Enhancement Provider").

                               W I T N E S S E T H

                  WHEREAS, Discover Bank as Master Servicer, Servicer and Seller
and the Trustee have entered into a Pooling and Servicing Agreement, dated as of
October 1, 1993 (as the same may from time to time be amended, modified or
otherwise supplemented, the "Pooling and Servicing Agreement"), and that certain
Series Supplement, dated as of April 17, 2001 (as the same may from time to time
be amended, modified or otherwise supplemented, the "Series Supplement");

                  WHEREAS, the Trust, pursuant to the Pooling and Servicing
Agreement and the Series Supplement, is issuing $526,316,000 in aggregate
principal amount of Investor Certificates of Discover Card Master Trust I,
Series 2001-4 (the "Series"), which will entitle the holders thereof to interest
during the Revolving Period, the Accumulation Period, and the Amortization
Period, if any, and principal on the Class A Expected Final Payment Date, the
Class B Expected Final Payment Date and during the Amortization Period, if any;

                  WHEREAS, the principal and interest payments on the Investor
Certificates are to be funded by Principal Collections and Finance Charge
Collections received by the Trust on the Receivables; and

                  WHEREAS, it is a condition to the issuance of the Investor
Certificates that at the closing on the date hereof, the Credit Enhancement
Provider make a term loan (the "Loan") to the Trust, for the benefit of the
Investor Certificateholders of the Series, of $39,473,700 (7.5% of the Series
Initial Investor Interest), for deposit in the Credit Enhancement Account to
provide additional funds to make payments on the Investor Certificates under
certain circumstances.

                  NOW, THEREFORE, in consideration of the mutual covenants
herein contained, and other good and valuable consideration, the receipt and
adequacy of which are hereby expressly acknowledged, the parties hereto agree as
follows:

         SECTION 1. DEFINED TERMS.

                  (a) The capitalized terms used herein and not otherwise
defined herein shall have the meanings assigned to them in the Pooling and
Servicing Agreement or the Series Supplement, as applicable.
<PAGE>   4
                  (b) The following terms have the definitions set forth below:

                  "Interest Period" means (i) with respect to the initial
Distribution Date, the period commencing on the Series Closing Date and ending
on the day immediately preceding the initial Distribution Date and (ii) with
respect to each subsequent Distribution Date, the period commencing on the
preceding Distribution Date and ending on the day immediately preceding such
Distribution Date.

                  "Lender Rate" means, with respect to each Interest Period, the
prime commercial lending rate per annum established by the Trustee, as in effect
on each day in the Interest Period.

                  "LIBOR-Based Rate" means, with respect to each Interest
Period, the per annum interest rate equal to the London Interbank Offered Rate
which appears on Telerate Page 3750 at approximately 11:00 a.m. (London time)
two LIBOR Business Days prior to the first day of such Interest Period for
deposits of United States dollars for a period of time comparable to the
Interest Period, and in an amount comparable to the principal amount of the
Loan, plus 0.60%.

                  "Portfolio Yield" means, with respect to any Due Period, the
annualized percentage equivalent of a fraction, the numerator of which shall be
the sum of (i) the amount of Finance Charge Collections received during such Due
Period, (ii) the amount of Series Yield Collections for each Series then
outstanding for such Due Period and (iii) the amount of Series Additional Funds
for each Series then outstanding for such Due Period, and the denominator of
which shall be the total amount of Principal Receivables in the Trust as of the
first day of such Due Period.

                  "Provider Amount" means, with respect to each Distribution
Date, the lesser of (i) the unpaid principal amount of the Loan (including any
amounts loaned by the Credit Enhancement Provider pursuant to Section 8 hereof)
and (ii) the amount on deposit in the Credit Enhancement Account, in each case
before giving effect to any payments, allocations or distributions on such
Distribution Date.

                  "Series Interest Payment Amount" means, for any Distribution
Date, an amount equal to the amount of interest payable on the Loan on such
Distribution Date, including any accrued but unpaid interest with respect to
previous Interest Periods and interest thereon, less the amount paid to the
Credit Enhancement Provider on such Distribution Date pursuant to Section 4(a)
hereof. The Series Interest Payment Amount shall be the amount of interest
payable pursuant to this Agreement for purposes of calculating the "Credit
Enhancement Fee" for the purpose of, and as such term is defined in, the Series
Supplement and such amount shall be paid in accordance with the provisions of
the Series Supplement.

         SECTION 2. LOAN. The Credit Enhancement Provider hereby makes a term
loan to the Trust, for the benefit of the Investor Certificateholders of the
Series, on the Series Closing Date in an amount equal to $39,473,700, receipt of
which is hereby acknowledged by the Trustee. The amount of such Loan shall be
increased by the amount of any additional loan made by the Credit Enhancement
Provider pursuant to Section 8 hereof.

                                       2
<PAGE>   5
         SECTION 3. CALCULATION OF AMOUNT OF INTEREST PAYABLE ON THE LOAN.

                  (a) The Loan shall bear interest for each day during each
Interest Period with respect thereto at a rate per annum determined for such day
as follows. To the extent the unpaid portion of the principal of the Loan during
such Interest Period equals or is less than the amount on deposit in the Credit
Enhancement Account, the rate for such Interest Period on such principal portion
shall be the LIBOR-Based Rate. To the extent any portion of the unpaid principal
of the Loan exceeds such amount on deposit, the rate for such Interest Period on
such principal portion shall be the Lender Rate.

                  (b) Interest shall be payable monthly in arrears on each
Distribution Date. Interest on the Loan shall be calculated on the basis of the
actual number of days elapsed during the applicable Interest Period divided by
(i) 360, to the extent the LIBOR-Based Rate is applicable, or (ii) 365 or 366,
as the case may be, to the extent the Lender Rate is applicable. The Trustee
shall, as soon as practicable, notify the Seller, the Master Servicer and the
Credit Enhancement Provider of each determination of the Lender Rate and of the
LIBOR-Based Rate. Each determination thereof by the Trustee pursuant to the
provisions of this Agreement shall be conclusive and binding on the Seller, the
Master Servicer and the Credit Enhancement Provider, in the absence of manifest
error.

                  (c) If any portion of interest due and payable on a
Distribution Date is not paid on such Distribution Date, the unpaid portion of
such interest shall be due and payable on the next succeeding Distribution Date.
Any interest that is not paid on the due date thereof shall accrue interest from
the Distribution Date on which such interest was due and payable to the date
such interest is actually paid at a rate per annum equal to the Lender Rate.

         SECTION 4. PAYMENT OF INTEREST ON THE LOAN. On each Distribution Date,
the Trustee as administrator of the Credit Enhancement shall pay or cause to be
paid to the Credit Enhancement Provider the amount of accrued but unpaid
interest on the Loan from the funds and in the order of priority set forth
below; provided, however, that such payments shall not exceed the amount of
accrued but unpaid interest on the Loan and that such payments will be made only
to the extent such funds are available:

                  (a) interest and earnings (net of losses and investment
expenses) accrued since the preceding Distribution Date on the Provider Amount;
and

                  (b) the Series Interest Payment Amount, to the extent such
amount has been paid to the Trustee as administrator of the Credit Enhancement
pursuant to the Series Supplement.

         SECTION 5. REPAYMENT OF PRINCIPAL OF THE LOAN. The principal amount of
the Loan shall be due and payable on the Series Termination Date. The Trust
shall repay the unpaid principal balance of the Loan in full on or before the
Series Termination Date in accordance with the provisions of this Agreement;
provided, however, that the unpaid

                                       3
<PAGE>   6
principal amount of the Loan shall only be paid from the funds described below,
and only to the extent such funds are available.

                  (a) If, as of any Distribution Date, after giving effect to
all other deposits to and withdrawals from the Credit Enhancement Account as of
such Distribution Date, the amount on deposit in the Credit Enhancement Account
exceeds the Total Maximum Credit Enhancement Amount, (i) the amount of such
excess, up to the amount, if any, by which the amount on deposit in the Credit
Enhancement Account exceeds the unpaid principal amount of the Loan, shall be
withdrawn from the Credit Enhancement Account and paid to Discover Bank on
behalf of the Holder of the Seller Certificate and (ii) the remaining amount of
such excess, if any, after payment of any amounts to be paid to Discover Bank on
behalf of the Holder of the Seller Certificate pursuant to clause (i) of this
Section 5(a), shall be withdrawn from the Credit Enhancement Account and paid to
the Credit Enhancement Provider for application toward the unpaid principal
amount of the Loan.

                  (b) On the earlier to occur of (i) the Series Termination Date
and (ii) the day on which the Class Invested Amount with respect to each Class
of the Series is paid in full, and after payment of any amounts to be paid on
such day from the Credit Enhancement Account to or for the benefit of the
Investor Certificateholders of the Series, all amounts remaining on deposit in
the Credit Enhancement Account, up to the amount of the unpaid principal amount
of the Loan, shall be withdrawn from such account and paid to the Credit
Enhancement Provider for application toward the unpaid principal amount of the
Loan.

         SECTION 6. PAYMENTS TO THE HOLDER OF THE SELLER CERTIFICATE AND THE
MASTER SERVICER.

                  (a) On each Distribution Date, the Trustee as administrator of
the Credit Enhancement shall pay or cause to be paid to Discover Bank on behalf
of the Holder of the Seller Certificate (i) the interest and earnings (net of
losses and investment expenses) accrued since the preceding Distribution Date on
an amount equal to the positive difference, if any, between (x) the amount on
deposit in the Credit Enhancement Account and (y) the Provider Amount and (ii)
the positive difference, if any, between (x) the amount of interest and earnings
(net of losses and investment expenses) accrued since the preceding Distribution
Date on the Provider Amount and (y) the amount paid to the Credit Enhancement
Provider on such Distribution Date pursuant to Section 4(a).

                  (b) On each Distribution Date, an amount equal to the amount,
if any, paid to the Trustee as administrator of the Credit Enhancement pursuant
to Section 9(b)(27) of the Series Supplement, shall be paid to Discover Bank on
behalf of the Holder of the Seller Certificate.

                  (c) On the earlier to occur of (i) the Series Termination Date
and (ii) the day on which the Class Invested Amount with respect to each Class
of the Series is paid in full, and after payment of any amounts to be paid on
such day from the Credit Enhancement Account to or for the benefit of the
Investor Certificateholders of the Series, any amounts remaining on deposit in
the Credit Enhancement Account that are not paid to the Credit Enhancement
Provider

                                       4
<PAGE>   7
pursuant to Section 5(b) hereof shall be withdrawn from such account and paid to
Discover Bank on behalf of the Holder of the Seller Certificate.

         SECTION 7. DEPOSITS TO AND WITHDRAWALS FROM THE CREDIT ENHANCEMENT
ACCOUNT.

                  (a) The proceeds of the Loan made by the Credit Enhancement
Provider to the Trust pursuant to Section 2 hereof, for the benefit of the
Investor Certificateholders of the Series, on the Series Closing Date and the
proceeds of any additional loan made by the Credit Enhancement Provider pursuant
to Section 8 hereof, shall be deposited into the Credit Enhancement Account. In
addition, any amounts paid to the Trustee as administrator of the Credit
Enhancement on any Distribution Date with respect to the Total Available Credit
Enhancement Amount or the Available Class B Credit Enhancement Amount pursuant
to the terms of the Series Supplement also shall be deposited into the Credit
Enhancement Account upon receipt of such funds by the Trustee.

                  (b) Any withdrawals from the Credit Enhancement Account for
the benefit of the Investor Certificateholders pursuant to Section 9 of the
Series Supplement may be made by the Master Servicer or by the Trustee as
administrator of the Credit Enhancement and shall be deemed to be made first
from amounts on deposit in the Credit Enhancement Account as a result of
payments of Series Excess Servicing and other amounts to the Trustee as
administrator of the Credit Enhancement to fund the Total Available Credit
Enhancement Amount, including any Series Excess Servicing or other such amounts
on deposit in the Credit Enhancement Account as a result of an Alternative
Credit Support Election having been made or as a result of the occurrence of a
Supplemental Credit Enhancement Event, and only after such amounts are exhausted
shall any such withdrawals be deemed to be made from amounts on deposit in the
Credit Enhancement Account that are attributable to the Loan.

                  (c) On or before any Distribution Date on which Discover Bank
is the Master Servicer, all payments made pursuant to this Agreement or the
Series Supplement between the Master Servicer or the Holder of the Seller
Certificate and the Credit Enhancement Account, may be aggregated for such
Distribution Date such that Discover Bank, acting as Master Servicer and as
agent of the Holder of the Seller Certificate, may make only one payment to the
Credit Enhancement Account in satisfaction of all payments of the Master
Servicer and the Holder of the Seller Certificate pursuant to this Agreement or
the Series Supplement, to the extent that all payment obligations of the Master
Servicer and the Holder of the Seller Certificate to the Credit Enhancement
Account on such Distribution Date exceed all payment obligations of the Credit
Enhancement Account to the Master Servicer and the Holder of the Seller
Certificate on such Distribution Date.

         SECTION 8. CERTAIN ADDITIONAL LOANS.

                  (a) Alternative Credit Support Election. In the event that an
Alternative Credit Support Election is made pursuant to the provisions of the
Series Supplement, Discover Bank on behalf of the Holder of the Seller
Certificate may cause the Additional Credit Support Amount to be funded by
Series Excess Servicing and other amounts paid to the Trustee as administrator
of

                                       5
<PAGE>   8
the Credit Enhancement to fund the Available Class B Credit Enhancement Amount,
pursuant to Section 9 of the Series Supplement, or may request that the Credit
Enhancement Provider make an additional loan in the amount of the Additional
Credit Support Amount. If Discover Bank on behalf of the Holder of the Seller
Certificate makes such request, and if the Credit Enhancement Provider elects to
make such loan, the amount of such loan shall be added to the unpaid principal
amount of the Loan. In the event that the Alternative Credit Support Election
does not become effective, the Additional Credit Support Amount (or, if the
entire amount of the Additional Credit Support Amount is not then on deposit in
the Credit Enhancement Account, the portion of the Additional Credit Support
Amount that is then on deposit) shall be withdrawn from the Credit Enhancement
Account and repaid to Discover Bank on behalf of the Holder of the Seller
Certificate (or, if such amount was loaned by the Credit Enhancement Provider,
returned to the Credit Enhancement Provider).

                  (b) Supplemental Credit Enhancement Event. In the event that a
Supplemental Credit Enhancement Event occurs, Discover Bank as Servicer may
cause the Supplemental Credit Enhancement Amount to be funded by Series Excess
Servicing and other amounts paid to the Trustee as administrator of the Credit
Enhancement to fund the Available Class B Credit Enhancement Amount, or may
request that the Credit Enhancement Provider make an additional loan in the
amount of the Supplemental Credit Enhancement Amount. If Discover Bank as
Servicer makes such a request, and if the Credit Enhancement Provider elects to
make such loan, the amount of such loan shall be equal to the Supplemental
Credit Enhancement Amount and shall be added to the unpaid principal amount of
the Loan.

                  (c) Notice. The Credit Enhancement Provider shall give prior
written notice to Moody's of the making of any loan by the Credit Enhancement
Provider other than the additional loans described in this Section 8.

                  (d) At the time of any additional loan described in this
Section 8, Discover Bank as Servicer and the Credit Enhancement Provider may
agree in writing that the Supplemental Credit Enhancement Amount or the
Additional Credit Support Amount, as applicable, shall bear interest at a
different LIBOR-Based Rate, which rate shall reflect prevailing market
conditions and the expected duration of such additional loan.

         SECTION 9. LIMITED OBLIGATION; WAIVER OF SETOFF; OBLIGATIONS ABSOLUTE.

                  (a) Notwithstanding any provision in any other section of this
Agreement to the contrary, the obligation to repay the Loan, together with
interest thereon, shall be without recourse to any Seller, the Master Servicer,
any Servicer, the Trustee, the Trust, any Certificateholder, or any affiliate,
officer, director, employee or person acting on behalf of any of them, and the
obligation to pay such amounts shall be limited solely to the application of
funds pursuant to this Agreement, in the manner and to the extent such funds are
available, except for the direct recourse indemnification obligation of each
successor Master Servicer pursuant to Section 11 hereof. The Credit Enhancement
Provider agrees that its interest in funds on deposit in the Credit Enhancement
Account is subordinated to the interests of the Investor Certificateholders of
the Series, as provided in this Agreement and in the Series Supplement. The

                                       6
<PAGE>   9
Credit Enhancement Provider further agrees that it shall have no right of setoff
or lender's lien against any Seller, the Master Servicer, any Servicer, the
Trustee, the Trust, or any Certificateholder.

                  (b) The obligations of the Seller, the Trustee, the Credit
Enhancement Provider and the Master Servicer under this Agreement shall be
absolute, unconditional and irrevocable, and shall be performed strictly in
accordance with the terms of this Agreement.

         SECTION 10. INVESTMENTS AND INFORMATION.

                  (a) The Trustee shall from time to time during the term of
this Agreement invest all amounts on deposit in the Credit Enhancement Account
as the Master Servicer shall direct, which investments shall at all times be
made in compliance with the terms of the Pooling and Servicing Agreement and the
Series Supplement.

                  (b) The Master Servicer shall provide the Credit Enhancement
Provider with such background information and data with respect to the Credit
Enhancement Account as the Credit Enhancement Provider may reasonably request.

         SECTION 11. SERVICING TRANSFER. In the event that a successor Master
Servicer is appointed pursuant to the Pooling and Servicing Agreement, from and
after the effective date of such transfer of servicing, the successor Master
Servicer appointed pursuant to the Pooling and Servicing Agreement, and not the
former Master Servicer, shall (a) be responsible for the performance of all
servicing functions to be performed from and after such date, (b) agree to be
bound by the terms, covenants and conditions contained herein applicable to the
Master Servicer and be subject to the duties and obligations of the Master
Servicer hereunder, and (c) agree to indemnify and hold harmless the Credit
Enhancement Provider from and against any and all claims, damages, losses,
liabilities, costs or expenses whatsoever which the Credit Enhancement Provider
may incur (or which may be claimed against the Credit Enhancement Provider) by
reason of the gross negligence or willful misconduct of the successor Master
Servicer in exercising its powers and carrying out its obligations under the
Pooling and Servicing Agreement and the Series Supplement. Such transfer of
servicing shall not affect any rights or obligations of the former Master
Servicer under this Agreement that arose prior to the effective date of the
transfer of servicing, except that such former Master Servicer shall have no
obligation to indemnify the Credit Enhancement Provider as a result of any act
or failure to act of any successor Master Servicer in the performance of the
servicing functions.

         SECTION 12. REPRESENTATIONS AND WARRANTIES.

                  (a) The Credit Enhancement Provider hereby represents and
warrants to the Master Servicer and the Trustee that:

                  (i) The Credit Enhancement Provider has been duly incorporated
and is validly existing as a corporation in good standing under the laws of the
State of Delaware, and has the corporate power and authority to execute, deliver
and perform its obligations under this Agreement.

                                       7
<PAGE>   10
                  (ii) This Agreement has been duly authorized, executed and
delivered on the part of the Credit Enhancement Provider.

                  (iii) When executed and delivered, this Agreement will
constitute a valid and binding agreement of the Credit Enhancement Provider
enforceable against the Credit Enhancement Provider in accordance with its
terms, except (A) as the same may be limited by insolvency, bankruptcy or
reorganization or other laws relating to or affecting the enforcement of
creditors' rights and (B) as the same may be limited by general equity
principles (whether considered in a proceeding at law or in equity) and by the
discretion of the court before which any proceeding therefor may be brought.

                  (b) The Master Servicer hereby represents and warrants to the
Credit Enhancement Provider and the Trustee that:

                  (i) The Master Servicer has been duly incorporated and is
validly existing as a banking corporation in good standing under the laws of the
State of Delaware, and has the corporate power and authority to execute, deliver
and perform its obligations under the Pooling and Servicing Agreement, the
Series Supplement and this Agreement.

                  (ii) This Agreement, the Pooling and Servicing Agreement and
the Series Supplement have been duly authorized, executed and delivered on the
part of the Master Servicer.

                  (iii) When executed and delivered, each of this Agreement, the
Pooling and Servicing Agreement and the Series Supplement will constitute a
valid and binding agreement of the Master Servicer enforceable against the
Master Servicer in accordance with its terms, except (A) as the same may be
limited by insolvency, bankruptcy, receivership or reorganization or other laws
relating to or affecting the enforcement of creditors' rights and (B) as the
same may be limited by general equity principles (whether considered in a
proceeding at law or in equity) and by the discretion of the court before which
any proceeding therefor may be brought.

                  (c) The Trustee hereby represents and warrants to the Credit
Enhancement Provider and the Master Servicer that:

                  (i) The Trustee is organized, existing and in good standing
under the laws of the United States of America.

                  (ii) The Trustee has full power, authority and right to
execute, deliver and perform this Agreement, the Pooling and Servicing Agreement
and the Series Supplement, and has taken all necessary action to authorize the
execution, delivery and performance by it of this Agreement, the Pooling and
Servicing Agreement and the Series Supplement.

                  (iii) Each of this Agreement, the Pooling and Servicing
Agreement and the Series Supplement have been duly executed and delivered by the
Trustee.

         SECTION 13. COVENANTS. Discover Bank, as Master Servicer and on behalf
of the Holder of the Seller Certificate, covenants and agrees that, so long as
this Agreement shall remain in effect or any monetary obligation arising
hereunder or under the Series Supplement

                                       8
<PAGE>   11
shall remain unpaid, it will change the terms and provisions of a Credit
Agreement with respect to a Discover Bank Discover Card Account or any other
Account with respect to which it is the Servicer (including, without limitation,
the calculation of the amount, or the timing, of charge-offs) only if it does
not believe, after a good faith assessment of the expected effects of such
change, that such change will result in a reduction of the Portfolio Yield, for
any Due Period beginning prior to the termination of the Series, to less than
the Base Rate unless such change (i) is required by any Requirements of Law or
(ii) is deemed necessary by Discover Bank in its sole reasonable judgment to
maintain its credit card business on a competitive basis. For purposes of this
Section 13, "Base Rate" shall mean (i) the weighted average of the Certificate
Rates for each Class of each Series then outstanding plus (ii) 1% per annum. For
purposes of the immediately preceding sentence, the Certificate Rate for each
Class that does not have a fixed Certificate Rate shall be the actual
Certificate Rate for such Class for the Interest Accrual Period commencing in
the immediately preceding Due Period. In the event that any Additional Seller
shall transfer Receivables in Additional Accounts to the Trust, Discover Bank on
behalf of the Holder of the Seller Certificate shall cause the Servicer with
respect to such Additional Accounts to make the covenant set forth above with
respect to such Additional Accounts.

         SECTION 14. GOVERNING LAW. THIS AGREEMENT SHALL BE CONSTRUED IN
ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK, WITHOUT REFERENCE TO
ITS CONFLICT OF LAW PROVISIONS, AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE
PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.

         SECTION 15. TERMINATION. This Agreement shall terminate on the date on
which the Series terminates in accordance with the provisions of the Pooling and
Servicing Agreement and the Series Supplement; provided, however, that this
Agreement may be terminated by the Master Servicer at any time, without penalty,
provided that such termination does not cause the ratings of the Investor
Certificates to be lowered or withdrawn by either of the Rating Agencies; and
provided, further, that all amounts owing to the Credit Enhancement Provider
hereunder with respect to principal and interest on the Loan shall have been
paid in full. Notwithstanding the foregoing, the Credit Enhancement Provider
shall have no rights under this Agreement, and shall not be entitled to any
payments hereunder, if and for so long as there is no Loan outstanding hereunder
and no accrued but unpaid interest.

         SECTION 16. NOTICES. Unless specifically indicated otherwise herein,
all notices and other communications provided for hereunder shall be in writing
and, if to the Credit Enhancement Provider, addressed to:

                   Discover Receivables Financing Corporation

                                  12 Read's Way

                           New Castle, Delaware 19720

                  Attn: Executive Vice President and Secretary

                              Phone: (302) 323-7167

                               Fax: (302) 323-7393

or, if to the Seller or the Master Servicer, addressed to:

                                       9
<PAGE>   12
                                  Discover Bank

                                  12 Read's Way

                           New Castle, Delaware 19720

                            Attn: Michael F. Rickert

                              Phone: (302) 323-7434

                               Fax: (302) 323-7393

or, if to the Trustee, addressed to:

                         U.S. Bank National Association

                               One Illinois Center

                       111 East Wacker Drive - Suite 3000

                             Chicago, Illinois 60601

                             Attn: Patricia M. Child

                              Phone: (312) 228-9413

                               Fax: (312) 228-9401

or as to any party at such other address as shall be designated by such party in
a written notice to the other parties.

                  Any notice or other communication shall be sufficiently given
and shall be deemed given when delivered to the addressee in writing or when
transmitted by telecopier, receipt of which by the addressee is confirmed by
telephone.

         SECTION 17. BANKRUPTCY. To the extent that the Trustee, the Master
Servicer or Discover Bank on behalf of the Holder of the Seller Certificate
makes a payment to the Credit Enhancement Provider or the Credit Enhancement
Provider receives any payment or proceeds with respect to the Loan, which
payment or proceeds or any part thereof are subsequently invalidated, declared
to be fraudulent or preferential, set aside or required to be repaid to a
trustee, receiver or any other party under any state or federal insolvency or
bankruptcy law then, to the extent such payment or proceeds are set aside, the
amount or part thereof intended to be satisfied shall be revived and continue in
full force and effect, as if such payment or proceeds had not been received by
the Credit Enhancement Provider.

         SECTION 18. LIMITATION OF REMEDIES. The Credit Enhancement Provider
shall not have the right to cause the Loan or any portion thereof to become due
and payable prior to the due date for the Loan as set forth herein.

         SECTION 19. NO PETITION.

                  (a) The Credit Enhancement Provider, by entering into this
Agreement, hereby covenants and agrees that it will not at any time institute,
join in or otherwise cause the institution of, against any Seller, the Master
Servicer or the Trust, any bankruptcy, reorganization, arrangement, insolvency
or liquidation proceedings, or other proceedings under any United States federal
or state or similar law prior to a year and a day after the final payment of all
investor certificates issued by any trust with respect to which Discover Bank is
the seller.

                                       10
<PAGE>   13
                  (b) Each of Discover Bank and the Trustee, by entering into
this Agreement, hereby covenants and agrees that it will not at any time
institute, join in or otherwise cause the institution of, against the Credit
Enhancement Provider, any bankruptcy, reorganization, arrangement, insolvency or
liquidation proceedings, or other proceedings under any United States federal or
state or similar law prior to a year and a day after the final payment of all
investor certificates issued by any trust with respect to which Discover Bank is
the seller.

         SECTION 20. AMENDMENTS. This Agreement shall not be amended or modified
without the written consent of each of the parties hereto. No amendment hereto
shall become effective without prior confirmation from the Rating Agencies that
such amendment will not cause a lowering or withdrawal of the then current
ratings of the Investor Certificates of the Series. The Master Servicer shall
provide a copy of any amendment hereto to the Rating Agencies.

         SECTION 21. SUCCESSORS AND ASSIGNS; REPLACEMENT OF CREDIT ENHANCEMENT
PROVIDER.

                  (a) This Agreement shall be binding upon, and inure to the
benefit of, the Trustee, the Sellers, the Servicers, the Master Servicer and the
Credit Enhancement Provider and their respective successors and permitted
assigns.

                  (b) No Seller shall assign its interests hereunder and under
the Pooling and Servicing Agreement or the Series Supplement, or any portion of
such interests, except by an assignment that transfers each such interest to the
same assignee.

                  (c) In the event that a successor trustee is appointed
pursuant to the provisions of the Pooling and Servicing Agreement to replace the
then current Trustee, such successor trustee, from and after its appointment,
shall be the Trustee for purposes of this Agreement and shall assume all of the
rights and obligations of the Trustee hereunder.

                  (d) The Credit Enhancement Provider may not assign any of its
rights or obligations hereunder without the prior written consent of Discover
Bank on behalf of the Holder of the Seller Certificate and without prior written
confirmation from the Rating Agencies that such assignment will not result in
the lowering or withdrawal of the rating of any Class of any Series then
outstanding.

         SECTION 22. PARTICIPATION. Any successor Credit Enhancement Provider
that is not a special-purpose corporation that is an affiliate of Discover Bank
may, without the consent of the Trustee, the Trust, any Seller, the Master
Servicer, any Servicer or any Certificateholder of the Series, sell
participations to one or more banks or other entities in all or a portion of its
rights under this Agreement (including all or a portion of the Loan); provided,
however, that (a) the Credit Enhancement Provider's obligations under this
Agreement shall remain unchanged, (b) the Credit Enhancement Provider shall
remain solely responsible to the other parties hereto for the performance of
such obligations, (c) the Trustee, the Trust, the Sellers and the Master
Servicer shall continue to deal solely and directly with the Credit Enhancement
Provider in connection with the Credit Enhancement Provider's rights and
obligations under this Agreement, and (d) the Credit Enhancement Provider shall
retain the sole right to enforce the obligations of the Trustee, the Trust, the
Sellers or the Master Servicer under this Agreement and to approve any
amendment, modification or waiver of any provision of this Agreement. Agreement,
and (d) the Credit Enhancement Provider shall retain the sole right to enforce
the obligations of the Trustee, the Trust, the Sellers or the Master Servicer
under this Agreement and to approve any amendment, modification or waiver of any
provision of this Agreement.

                                       11

<PAGE>   14
                  IN WITNESS WHEREOF, the parties hereby have caused this
Agreement to be duly executed and delivered by the undersigned thereunto duly
authorized as of the day and year first above written.

                               DISCOVER RECEIVABLES FINANCING
                                 CORPORATION,
                               as Credit Enhancement Provider

                               By         /s/ Jai Sooklal
                                        ---------------------------------------
                               Name:    Jai Sooklal
                               Title:   Vice President

                               DISCOVER BANK,
                               as Master Servicer, Servicer and Seller

                               By         /s/ Michael F. Rickert
                                        ---------------------------------------
                               Name:    Michael F. Rickert
                               Title:   Vice President, Chief Accounting Officer
                                        and Treasurer

                               U.S. BANK NATIONAL ASSOCIATION, as Trustee

                               By         /s/ Patricia M. Child
                                        ----------------------------------------
                               Name:    Patricia M. Child
                               Title:   Vice President

                                       13

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