Document:

EXHIBIT 10.4

                                                                   Executed Copy
                                                                   Swap Schedule

(Multicurrency - Cross Border)

                                     ISDA(R)
                  International Swaps Dealers Association, Inc.

                                    SCHEDULE
                                     to the
                                Master Agreement

                            dated as of 16 March 2007

                                     between

                                           WELLS FARGO BANK, N.A., not in its
                                          individual or corporate capacity but
 CREDIT SUISSE INTERNATIONAL              solely as Trustee on behalf of CREDIT
                                and     SUISSE COMMERCIAL MORTGAGE TRUST 2007-C1

-----------------------------           ----------------------------------------
         ("Party A")                                   ("Party B")

                                     Part 1

                             Termination Provisions.

(a)   "Specified Entity" means in relation to Party A for the purpose of:

   Section 5(a)(v),     Not Applicable
   Section 5(a)(vi),    Not Applicable
   Section 5(a)(vii),   Not Applicable
   Section 5(b)(iv),    Not Applicable

and in relation to Party B for the purpose of:

   Section 5(a)(v),     Not Applicable
   Section 5(a)(vi),    Not Applicable
   Section 5(a)(vii),   Not Applicable
   Section 5(b)(iv),    Not Applicable

(b)   "Specified Transaction" will have the meaning specified in Section 14 of
      this Agreement.

(c)   Certain Events of Default. Subject to Part 1(h) below, the following
      Events of Default will apply to the parties as specified below, and the
      definition of "Event of Default" in Section 14 is deemed to be modified
      accordingly:

      Section 5(a)(i) (Failure to Pay or Deliver) will apply to Party A and
      Party B, provided that the word "third" shall be deleted and replaced by
      "1 p.m. (New York City time) on the first".
      Section 5(a)(ii) (Breach of Agreement) will apply to Party A and will not
      apply to Party B.
      Section 5(a)(iii) (Credit Support Default) will apply to Party A and will
      not apply to Party B, unless Party A has posted collateral under the
      Credit Support Annex, in which case Section 5(a)(iii)(1) will apply to
      Party B.
      Section 5(a)(iv) (Misrepresentation) will apply to Party A and will not
      apply to Party B.
      Section 5(a)(v) (Default under Specified Transaction) will not apply to
      Party A or Party B.
      Section 5(a)(vi) (Cross Default) will apply to Party A and will not apply
      to Party B. "Specified Indebtedness" shall have the meaning specified in
      Section 14 of this Agreement and "Threshold Amount" means 3% of
      shareholder's equity of the Relevant Entity.
      Section 5(a)(vii) (Bankruptcy) will apply to Party A and Party B; provided
      that in respect of Party B, (i) clause (2) thereof shall not apply, (ii)
      clause (4) thereof shall not apply to Party B to the extent that the
      relevant proceeding is instituted by Party A in breach of Party A's
      agreement in Part 5(g) of this Schedule, (iii) the words "seeks or" shall
      be deleted from clause (6) thereof and any appointment that is effected by
      or pursuant to the transaction documents shall not constitute an Event of
      Default under such clause (6), (iv) clause (7) thereof shall not apply,
      (v) clause (8) thereof shall apply only to the extent not inconsistent
      with clauses (i) to (iv) of this sentence and (vi) clause (9) thereof
      shall not apply.
      Section 5(a)(viii) (Merger without Assumption) will apply to Party A and
      will not apply to Party B.

(d)   Termination Events. The following Termination Events will apply to the
      parties as specified below:

      Section 5(b)(i) (Illegality) will apply to Party A and Party B.
      Section 5(b)(ii) (Tax Event) will apply to Party A and Party B; provided
      that the words "(x) any action taken by a taxing authority, or brought in
      a court of competent jurisdiction, on or after the date on which a
      Transaction is entered into (regardless of whether such action is taken or
      brought with respect to a party to this Agreement) or (y)" shall be
      deleted.
      Section 5(b)(iii) (Tax Event upon Merger) will apply to Party A and Party
      B; provided that in the event that Party A is the Affected Party in
      respect of an event described in Section 5(b)(iii), Party A shall not be
      entitled to designate an Early Termination Date pursuant to such Section
      5(b)(iii).
      Section 5(b)(iv) (Credit Event upon Merger) will not apply to Party A or
      Party B.

(e)   The "Automatic Early Termination" provision of Section 6(a) of this
      Agreement will not apply to Party A and will not apply to Party B.

(f)   Payments on Early Termination. For the purpose of Section 6(e) of this
      Agreement:

      (i)   Market Quotation will apply; subject to Part 5(w).

      (ii)  The Second Method will apply.

      (iii) Both Party A and Party B agree that no amount shall be payable under
            Section 6(e), if any, in connection with any Event of Default or
            Termination Event other than following (A) an Event of Default in
            respect of which Party A is the Defaulting Party or (B) the
            Additional Termination Event described in Part 1(h)(i).

      Moreover, any amounts payable by Party B under Section 6(e) as a result
      shall be paid (i)(x) only if a replacement swap counterparty is procured
      (which for the avoidance of doubt, Party B shall be under no obligation to
      procure) and (y) only to the extent that Party B receives any payment from
      such replacement swap counterparty as consideration for entering into the
      replacement swap agreement (less any costs or expenses incurred by Party B
      in connection thereto) or (ii) if an Additional Termination Event
      described in Part 1(h)(i) occurs.

(g)   "Termination Currency" means United States Dollars.

(h)   Additional Termination Events. The following Additional Termination Events
      will apply:

      (i)   The termination of the obligations and responsibilities of the
            parties to the Pooling and Servicing Agreement pursuant to Section
            9.01 of the Pooling and Servicing Agreement. For all purposes of
            this Agreement, Party B shall be the sole Affected Party with
            respect to the occurrence of a Termination Event described in this
            Part 1(h)(i).

      (ii)  Amendment of Pooling and Servicing Agreement. Party B shall fail to
            comply with Part 5(j) of this Schedule. For all purposes of this
            Agreement, the Pooling and Servicing Agreement or PSA means the
            pooling and servicing agreement, dated as of 1 March 2007, among
            Credit Suisse First Boston Mortgage Securities Corp., as Depositor,
            Capmark Finance Inc., as Master Servicer, Midland Loan Services,
            Inc., as Special Servicer, and Wells Fargo Bank, N.A., as Trustee
            for the Trust.

      (iii) Each of the following shall constitute an Additional Termination
            Event with Party A as sole Affected Party:

            (a)   An S&P Collateralization Event has occurred and is continuing
                  and Party A has failed to comply with or perform any
                  obligation to be complied with or performed by Party A in
                  accordance with the "Downgrade Provisions" as set forth in
                  Part 5(b)(2) and a Ratings Event has neither occurred nor is
                  continuing. Any event which constitutes an Additional
                  Termination Event pursuant to this Section 1(h)(i)(a) shall
                  not constitute an Event of Default.

            (b)   A Moody's Collateralization Event has occurred and is
                  continuing, and Party A has failed to comply with or perform
                  any obligation to deliver collateral under the Credit Support
                  Annex and 30 Local Business Days or more have elapsed since
                  the last time that no Moody's Collateralization Event had
                  occurred and was continuing. Any event which constitutes an
                  Additional Termination Event pursuant to this Section
                  1(h)(i)(b) shall not constitute an Event of Default (unless
                  such event constitutes a failure to post collateral pursuant
                  to the terms of the Credit Support Annex in breach of Part
                  5(b)(4)).

            (c)   A Ratings Event has occurred and is continuing and Party A has
                  failed to comply with or perform any obligation to be complied
                  with or performed by Party A in accordance with the "Downgrade
                  Provisions" as set forth in Part 5(b)(4) and, in the case of a
                  Moody's Ratings Event, (i) at least one Eligible Replacement
                  has made a Live Bid to be the transferee of a transfer to be
                  made in accordance with the terms hereof and/or (ii) at least
                  one entity that satisfies the Hedge Counterparty Ratings
                  Requirements is able to provide an Eligible Guarantee in
                  respect of all of Party A's present and future obligations
                  under this Agreement subject to the satisfaction of the S&P
                  Ratings Condition. The failure by Party A to comply with or
                  perform any obligation (other than the obligation to post
                  collateral pursuant to the terms of the Credit Support Annex)
                  to be complied with or performed by Party A in accordance with
                  the "Downgrade Provisions" as set forth in Part 5(b)(4) will
                  constitute an Additional Termination Event and not an Event of
                  Default.

      (iv)  Regulation AB 10% Disclosure Requirement. If (A) the Depositor still
            has a reporting obligation with respect to this Transaction pursuant
            to Regulation AB (as defined herein) and (B) Party A has not, within
            30 days after receipt of a 10% Swap Disclosure Request (as defined
            herein), complied with the provisions set forth in clauses (ii) and
            (iii) of Part 5(s) below (provided that if the significance
            percentage is 10% or more and less than 20% when the 10% Swap
            Disclosure Request is made or reaches 10% after a 10% Swap
            Disclosure Request has been made to Party A, Party A must comply
            with the provisions set forth in clauses (ii) and (iii) of Part 5(s)
            below within the greater of 5 Calendar Days and 3 Business Days of
            Party A being informed of the significance percentage reaching 10%
            or more), then an Additional Termination Event shall have occurred
            with respect to Party A and Party A shall be the sole Affected Party
            with respect to such Additional Termination Event.

      (v)   Regulation AB 20% Disclosure Requirement. If (A) the Depositor still
            has a reporting obligation with respect to this Transaction pursuant
            to Regulation AB and (B) Party A has not, within 30 days after
            receipt of a 20% Swap Disclosure Request (as defined herein)
            complied with the provisions set forth in clauses (iv) and (v) of
            Part 5(s) below (provided that if the significance percentage is 20%
            or more when the 20% Swap Disclosure Request is made or reaches 20%
            after a 20% Swap Disclosure Request has been made to Party A, Party
            A must comply with the provisions set forth in clauses (iv) and (v)
            of Part 5(s) below within the greater of 5 Calendar Days and 3
            Business Days of Party A being informed of the significance
            percentage reaching 20% or more), then an Additional Termination
            Event shall have occurred with respect to Party A and Party A shall
            be the sole Affected Party with respect to such Additional
            Termination Event.

<PAGE>

                                     Part 2

                              Tax Representations.

(a)   Payer Representations. For the purpose of Section 3(e) of this Agreement,
      Party A will make the following representation and Party B will make the
      following representation:

      It is not required by any applicable law, as modified by the practice of
      any relevant governmental revenue authority, of any Relevant Jurisdiction
      to make any deduction or withholding for or on account of any Tax from any
      payment (other than interest under Section 2(e), 6(d)(ii) or 6(e) of this
      Agreement) to be made by it to the other party under this Agreement. In
      making this representation, it may rely on (i) the accuracy of any
      representations made by the other party pursuant to Section 3(f) of this
      Agreement, (ii) the satisfaction of the agreement contained in Section
      4(a)(i) or 4(a)(iii) of this Agreement and the accuracy and effectiveness
      of any document provided by the other party pursuant to Section 4(a)(i) or
      4(a)(iii) of this Agreement and (iii) the satisfaction of the agreement of
      the other party contained in Section 4(d) of this Agreement, provided that
      it shall not be a breach of this representation where reliance is placed
      on clause (ii) and the other party does not deliver a form or document
      under Section 4(a)(iii) of this Agreement by reason of material prejudice
      to its legal or commercial position.

(b)   Payee Representations. For the purpose of Section 3(f) of this Agreement,
      Party A and Party B make the representations specified below, if any:

      (i)   Party A makes the following representation to Party B:

            (A)   Party A is entering into each Transaction in the ordinary
                  course of its trade as, and is, a recognized UK bank as
                  defined in Section 840A of the UK Income and Corporation Taxes
                  Act of 1988.

            (B)   Party A has been approved as a Withholding Foreign Partnership
                  by the US Internal Revenue Service.

            (C)   Party A's Withholding Foreign Partnership Employer
                  Identification Number is 98 0330001.

            (D)   Party A is a partnership that agrees to comply with any
                  withholding obligation under Section 1446 of the Internal
                  Revenue Code.

      (ii)  Party B represents that it is the trustee of a trust created under
            an agreement governed by New York law.

<PAGE>

                                     Part 3

                         Agreement to Deliver Documents.

For the purpose of Sections 4(a)(i) and (ii) of this Agreement, each party
agrees to deliver the following documents, as applicable:

(a)   Tax forms, documents or certificates to be delivered are:--

Party required to        Form/Document/Certificate        Date by which to be
deliver document                                          delivered
--------------------------------------------------------------------------------
Party A                  U.S. Internal Revenue     (i) Before the first
                         Service Form W-8IMY and   Payment Date under
                         any successor form        this Agreement, such
                         thereto                   form to be updated at
                                                   the beginning of each
                                                   succeeding three-
                                                   calendar-year period after
                                                   the first payment date under
                                                   this Agreement, (ii) promptly
                                                   upon reasonable demand by
                                                   Party B, and (iii) promptly
                                                   upon learning that any such
                                                   Form previously provided by
                                                   Party A has become obsolete
                                                   or incorrect.

(b) Other documents to be delivered are:--

<TABLE>
<CAPTION>
Party            Form/Document/Certificate                                      Date by which           Covered by
required                                                                        to be                   Section 3(d)
to deliver                                                                                              Representation
document
----------------------------------------------------------------------------------------------------------------------
<S>              <C>                                                            <C>                     <C>
Party A and      Evidence reasonably satisfactory to the other party as to      Upon execution of       Yes
Party B          the names, true signatures and authority of the officers or    this Agreement and,
                 officials signing this Agreement or any Confirmation on its    if requested, upon
                 behalf.                                                        execution of any
                                                                                Confirmation.

Party B          An opinion of counsel to such party reasonably satisfactory    Upon execution of       No
                 in form and substance to the other party covering the          this Agreement.
                 enforceability of this Agreement against such party.

Party B          Any and all proposed and executed amendments to the Pooling    As soon as              No
                 and Servicing Agreement.                                       practicable
                                                                                subsequent to
                                                                                execution by Party B

Party B          Statements to Certificateholders of Party B at no expense to   As soon as available    Yes
                 Party A or Party B.

</TABLE>

<PAGE>

                                     Part 4.

                                 Miscellaneous.

(a)   Addresses for Notices. For the purposes of Section 12(a) of this
      Agreement:

      Party A:

      (1)   Address for notices or communications to Party A (other than by
            facsimile):-

            Address:   One Cabot Square    Attention: (1) Head of Credit Risk
                       London E14 4QJ                     Management;
                       England                        (2) Managing Director -
                                                          Operations Department;
                                                      (3) Managing Director -
                                                          Legal Department

            Telex No.: 264521              Answerback: CSI G

            (For all purposes.)

      (2)   For the purpose of facsimile notices or communications under this
            Agreement (other than a notice or communication under Section 5 or
            6):-

            Facsimile No.: +44 20 7888 2686
            Attention: Managing Director - Legal Department

            Telephone number for oral confirmation of receipt of facsimile in
            legible form: +44 20 7888 2028 Designated responsible employee for
            the purposes of Section 12(a)(iii): Senior Legal Secretary

      Party B:

      Address for notices or communications to Party B:

            Credit Suisse Commercial Mortgage Trust 2007-C1
            c/o Wells Fargo Bank, N.A.
            9062 Old Annapolis Road
            Columbia, Maryland 21045
            USA

            Attn: Corporate Trust Services - CSMC 2007-C1
            Telephone: +1-443-542-6029
            Facsimile: +1-443-542-6156

            With copies to:

            Credit Suisse Securities (USA) LLC
            11 Madison Avenue
            New York, New York 10010
            USA

(b)   Process Agent. For the purposes of Section 13(c) of this Agreement:

      Party A appoints as its Process Agent:

            Credit Suisse Securities (USA) LLC
            Eleven Madison Avenue
            New York, New York 10010
            USA

            Attention:  General Counsel
                        Legal and Compliance Department

      Party B appoints as its Process Agent: Not applicable.

(c)   Offices. With respect to Party A, the provisions of Section 10(a) will
      apply to this Agreement.

(d)   Multibranch Party. For the purpose of Section 10(c) of this Agreement:

      Party A is not a Multibranch Party.
      Party B is not a Multibranch Party.

(e)   Calculation Agent. The Calculation Agent is Party A.

(f)   Credit Support Document. Credit Support Document means:-

      With respect to Party A: The Credit Support Annex and any guarantee that
      is provided to Party B pursuant to Part 5 (b) below.

      With respect to Party B: The Credit Support Annex.

(g)   Credit Support Provider.

      Credit Support Provider means in relation to Party A: Not applicable or,
      if a guarantee is provided to Party B pursuant to Part 5 (b) below, the
      guarantor providing such guarantee.

      Credit Support Provider means in relation to Party B: Not applicable..

(h)   Governing Law. This Agreement and, to the fullest extent permitted by
      applicable law, all matters arising out of or relating in any way to this
      Agreement will be governed by and construed in accordance with the laws of
      the State of New York (without reference to choice of law doctrine other
      than New York General Obligation Law Sections 5-1401 and 5-1402).

(i)   Netting of Payments. Subparagraph (ii) of Section 2(c) of this Agreement
      will apply to the Transactions.

(j)   "Affiliate." Each of the parties shall be deemed to have no Affiliates,
      other than for purposes of Section 7 (as amended herein).

<PAGE>

                                     Part 5.

                                Other Provisions.

(a)   Definitions.

      This Agreement, including each Confirmation and each Swap Transaction, is
      subject to the 2000 ISDA Definitions, as amended, supplemented, updated
      and superseded from time to time (the "Definitions"), as published by the
      International Swaps and Derivatives Association, Inc. ("ISDA") and will be
      governed in all respects by the Definitions (except that references to
      "Swap Transactions" shall be deemed to be references to "Transactions").
      The Definitions are incorporated by reference in, and made part of, this
      Agreement and each Confirmation as if set forth in full in this Agreement
      and such Confirmations. In the event of any inconsistency between the
      provisions of this Agreement and the Definitions, this Agreement will
      prevail (and, in the event of any inconsistency between any Confirmation
      and the Definitions, the Confirmation will control). Any reference in a
      Confirmation to any Definitions which are amended or supplemented in this
      Schedule shall be deemed to be a reference to such Definitions as so
      amended or supplemented, unless the Confirmation states, by specific
      reference to any such amendment or supplement, that such amendment or
      supplement will not apply in respect of the Transaction to which such
      Confirmation relates. Any capitalized terms used but not otherwise defined
      in this Agreement shall have the meanings assigned to them (or
      incorporated by reference) in the Pooling and Servicing Agreement.
      Capitalized terms used in this Agreement that are not defined herein and
      are defined in the Pooling and Servicing Agreement shall have the
      respective meanings assigned to them in the Pooling and Servicing
      Agreement.

(b)   Downgrade Provisions.

      (1)   It shall be a collateralization event (Collateralization Event) if:

            (A) with respect to each Relevant Entity, either (i) such Relevant
            Entity has both a long-term and short-term rating by Moody's
            Investors Service, Inc. (Moody's) and (x) the unsecured,
            unguaranteed and otherwise unsupported long-term senior debt
            obligations of such Relevant Entity are rated "A3" or below by
            Moody's or (y) the unsecured, unguaranteed and otherwise unsupported
            short-term debt obligations of such Relevant Entity are rated "P-2"
            or below by Moody's, or (ii) no short-term rating is available from
            Moody's and the unsecured, unguaranteed and otherwise unsupported
            long-term senior debt obligations of such Relevant Entity are rated
            "A2" or below by Moody's (such event, a Moody's Collateralization
            Event), or

            (B) with respect to each Relevant Entity, either (i) the unsecured,
            unguaranteed and otherwise unsupported short-term debt obligations
            of such Relevant Entity are rated "A-2" or below by Standard &
            Poor's Rating Services, a division of The McGraw-Hill Companies,
            Inc. (S&P) or (ii) if such Relevant Entity does not have a
            short-term rating from S&P, the unsecured, unguaranteed and
            otherwise unsupported long-term senior debt obligations of Party A
            are rated "A" or below by S&P (such event, an S&P Collateralization
            Event).

            Relevant Entity means Party A and any guarantor under an Eligible
            Guarantee in respect of all of Party A's present and future
            obligations under this Agreement.

      (2)   Without prejudice to Party A's obligations under the Collateral
            Support Annex, during any period in which a Collateralization Event
            is occurring, Party A shall, at its own expense and within thirty
            (30) Business Days of such Collateralization Event (or 30 calendar
            days, in the case of an S&P Collateralization Event), either (i)
            post collateral according to the terms of the 1994 ISDA Credit
            Support Annex to this Schedule, including Paragraph 13 thereof (the
            Credit Support Annex), (ii) furnish an Eligible Guarantee (as
            defined below) of Party A's obligations under this Agreement that is
            (in the case of an S&P Collateralization Event) subject to the
            satisfaction of the S&P Ratings Condition from a guarantor that
            satisfies the Hedge Counterparty Ratings Requirement (as defined
            herein), or (iii) obtain a substitute counterparty (and provide
            prior written notice to each Rating Agency with respect thereto)
            that (a) is reasonably acceptable to Party B, (b) satisfies the
            Hedge Counterparty Ratings Requirement and (c) assumes the
            obligations of Party A under this Agreement (through an assignment
            and assumption agreement in form and substance reasonably
            satisfactory to Party B) or replaces the outstanding Transactions
            hereunder with transactions on identical terms, except that Party A
            shall be replaced as counterparty, provided that such substitute
            counterparty, as of the date of such assumption or replacement, must
            not, as a result thereof, be required to withhold or deduct on
            account of tax under the Agreement or the new transactions, as
            applicable, and such assumption or replacement must not lead to a
            termination event or event of default occurring in respect of the
            new transactions, as applicable, provided further, that (in the case
            of an S&P Collateralization Event) satisfaction of the S&P Ratings
            Condition shall be required for any transfer of any Transactions
            under this Part 5(b)(2)(iii) unless such transfer is in connection
            with the assignment and assumption of this Agreement by such
            substitute counterparty without modification of its terms, other
            than the following terms: party name, dates relevant to the
            effective date of such transfer, tax representations (provided that
            the representations in Part 2(a) are not modified) and any other
            representations regarding the status of the substitute counterparty
            of the type included in Section (c) of this Part 5 and notice
            information (in which case, Party A shall provide written notice to
            S&P with respect thereto). To the extent that Party A elects or is
            required to post collateral pursuant to this Part 5(b)(1) following
            an S&P Collateralization Event, Party A shall deliver to each Rating
            Agency (with a copy to the Trustee) within thirty (30) calendar days
            of the occurrence of such Collateralization Event an opinion
            acceptable to S&P as to the enforceability of the Credit Support
            Annex and which confirms that, notwithstanding the commencement of a
            case under the Bankruptcy Code with respect to Party A, the
            collateral will (a) be available to meet swap obligations
            notwithstanding the automatic stay and (b) if delivered
            pre-bankruptcy, will not be subject to recovery as preferences or
            constructive fraudulent conveyances, in each case subject to
            standard qualifications and assumptions.

            Eligible Guarantee means an unconditional and irrevocable guarantee
            that is provided by a guarantor as principal debtor rather than
            surety and is directly enforceable by Party B, where either (A) a
            law firm has given a legal opinion confirming that none of the
            guarantor's payments to Party B under such guarantee will be subject
            to withholding for Tax or (B) such guarantee provides that, in the
            event that any of such guarantor's payments to Party B are subject
            to withholding for Tax, such guarantor is required to pay such
            additional amount as is necessary to ensure that the net amount
            actually received by Party B (free and clear of any withholding tax)
            will equal the full amount Party B would have received had no such
            withholding been required.

            An entity shall satisfy the Hedge Counterparty Ratings Requirement
            if (a) either (i) the unsecured, unguaranteed and otherwise
            unsupported short-term debt obligations of the entity are rated at
            least "A-1" by S&P or (ii) if the entity does not have a short-term
            rating from S&P, the unsecured, unguaranteed and otherwise
            unsupported long-term senior debt obligations of the entity are
            rated at least "A+" by S&P, and (b) either (i) the unsecured,
            unguaranteed and otherwise unsupported long-term senior debt
            obligations of such entity are rated at least "A3" by Moody's and
            the unsecured, unguaranteed and otherwise unsupported short-term
            debt obligations of such entity are rated at least "P-2" by Moody's
            (if such entity has both a long-term and short-term rating from
            Moody's) or (ii) if such entity does not have a short-term debt
            rating from Moody's, the unsecured, unguaranteed and otherwise
            unsupported long-term senior debt obligations of such entity are
            rated at least "A3" by Moody's. For the purpose of this definition,
            no direct or indirect recourse against one or more shareholders of
            the entity (or against any Person in control of, or controlled by,
            or under common control with, any such shareholder) shall be deemed
            to constitute a guarantee, security or support of the obligations of
            the entity.

            S&P Ratings Condition shall mean prior written confirmation from S&P
            that a proposed action will not cause the downgrade or withdrawal of
            the then current ratings of any outstanding Certificates.

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

      (3)   It shall be a ratings event (Ratings Event) if at any time after the
            date hereof (A) so long as S&P is currently rating the Certificates,
            either (i) the unsecured, unguaranteed and otherwise unsupported
            long-term senior debt obligations of each Relevant Entity are rated
            "BB+" or below by S&P, (ii) the unsecured, unguaranteed and
            otherwise unsupported short-term debt obligations of each Relevant
            Entity are rated "A3" or below by S&P or (iii) S&P withdraws all of
            each Relevant Entity's ratings and no longer rates any Relevant
            Entity (such event, an S&P Ratings Event), or (B) so long as Moody's
            is currently rating the Certificates, either (i) the unsecured,
            unguaranteed and otherwise unsupported long-term senior debt
            obligations of each Relevant Entity are unrated or rated "Baa1" or
            below by Moody's (or such rating is withdrawn) or (ii) the
            unsecured, unguaranteed and otherwise unsupported short-term debt
            obligations of Party A are unrated or rated "P-3" or below by
            Moody's (or such rating is withdrawn) (such event, a Moody's Ratings
            Event).

      (4)   Following a Ratings Event, Party A shall take the following actions:

            (a)   in the case of an S&P Ratings Event, Party A, at its sole
                  expense, shall (i) within 10 Business Days, subject to
                  extension upon satisfaction of the S&P Ratings Condition, of
                  the Ratings Event, obtain a substitute counterparty (and
                  provide written notice to each Rating Agency with respect
                  thereto), that (A) satisfies the Hedge Counterparty Ratings
                  Requirement and (B) assumes the obligations of Party A under
                  this Agreement (through an assignment and assumption agreement
                  in form and substance reasonably satisfactory to Party B) or
                  replaces the outstanding Transactions hereunder with
                  transactions on identical terms, except that Party A shall be
                  replaced as counterparty, provided that such substitute
                  counterparty, as of the date of such assumption or
                  replacement, must not, as a result thereof, be required to
                  withhold or deduct on account of tax under the Agreement or
                  the new transactions, as applicable, and such assumption or
                  replacement must not lead to a termination event or event of
                  default occurring in respect of the new transactions, as
                  applicable; provided further that satisfaction of the S&P
                  Ratings Condition shall be required within such 10 Business
                  Days or longer period, as applicable, for any transfer of any
                  Transaction under this clause (a)(i) unless such transfer is
                  in connection with the assignment and assumption of this
                  Agreement without modification of its terms by such
                  counterparty, other than the following terms: party name,
                  dates relevant to the effective date of such transfer, tax
                  representations (provided that the representations in Part
                  2(a) are not modified) and any other representations regarding
                  the status of the substitute counterparty of the type included
                  in Section (c) of this Part 5 and notice information (in which
                  case, Party A shall provide prior written notice to S&P and
                  the Trustee with respect thereto) and (ii) post collateral
                  according to the terms of the Credit Support Annex; and

            (b)   in the case of a Moody's Ratings Event, Party A, at its sole
                  expense, shall (i) use commercially reasonable efforts to, as
                  soon as reasonably practicable, (A) furnish an Eligible
                  Guarantee of Party A's obligations under this Agreement from a
                  guarantor that satisfies paragraph (b) of the definition of
                  Hedge Counterparty Ratings Requirement or (B) obtain a
                  substitute counterparty (and provide prior written notice to
                  each Rating Agency with respect thereto) that (1) is
                  reasonably acceptable to Party B, (2) satisfies the paragraph
                  (b) of the definition of Hedge Counterparty Ratings
                  Requirement and (3) assumes the obligations of Party A under
                  this Agreement (through an assignment and assumption agreement
                  in form and substance reasonably satisfactory to Party B) or
                  replaces the outstanding Transactions hereunder with
                  transactions on substantially the same terms, including rating
                  triggers, credit support documentation and other provisions of
                  this Agreement, except that Party A shall be replaced as
                  counterparty, provided that such substitute counterparty, as
                  of the date of such assumption or replacement, must not, as a
                  result thereof, be required to withhold or deduct on account
                  of tax under the Agreement or the new transactions, as
                  applicable, and such assumption or replacement must not lead
                  to a termination event or event of default occurring in
                  respect of the new transactions, as applicable and (ii) post
                  collateral according to the terms of the Credit Support Annex.

                  Rating Agency Approval shall mean prior written confirmation
                  from S&P and Moody's that such action will not cause them to
                  downgrade or withdraw its then-current ratings of any
                  outstanding Certificates.

            (c)   Section 3(a) of this Agreement is hereby amended to include
                  the following additional representations after paragraph
                  3(a)(v):

                  (vi)  Eligible Contract Participant. It is an "eligible
                        contract participant" as such term is defined in Section
                        35.1 (b) (2) of the regulations (17 C.F.R. 35)
                        promulgated under and as defined in section 1a(12) of
                        the U.S. Commodity Exchange Act, as amended.

                  (vii) Individual Negotiation. This Agreement and each
                        Transaction hereunder is subject to individual
                        negotiation by the parties.

                  (viii) Relationship between Party A and Party B. Subject as
                        provided in Part 5(f), each of Party A and Party B will
                        be deemed to represent to the other on the date on which
                        it enters into a Transaction or an amendment thereof
                        that (absent a written agreement between Party A and
                        Party B that expressly imposes affirmative obligations
                        to the contrary for that Transaction):

                        (1)   Principal. It is acting as principal and not as
                              agent when entering into this Agreement and each
                              Transaction.

                        (2)   Non-Reliance. Party A is acting for its own
                              account and with respect to Party B, the Trustee
                              is executing this Agreement as Trustee on behalf
                              of the Trust. Each party has made its own
                              independent decisions to enter into that
                              Transaction and as to whether that Transaction is
                              appropriate or proper for it based upon its own
                              judgment and upon advice from such advisors as it
                              has deemed necessary. It is not relying on any
                              communication (written or oral) of the other party
                              as investment advice or as a recommendation to
                              enter into that Transaction; it being understood
                              that information and explanations related to the
                              terms and conditions of a Transaction shall not be
                              considered investment advice or a recommendation
                              to enter into that Transaction. No communication
                              (written or oral) received from the other party
                              shall be deemed to be an assurance or guarantee as
                              to the expected results of that Transaction.

                        (3)   Evaluation and Understanding. It is capable of
                              evaluating and understanding (on its own behalf or
                              through independent professional advice), and
                              understands and accepts, the terms, conditions and
                              risks of this Agreement and each Transaction
                              hereunder. It is also capable of assuming, and
                              assumes, all financial and other risks of this
                              Agreement and each Transaction hereunder.

                        (4)   Status of Parties. The other party is not acting
                              as a fiduciary or an advisor for it in respect of
                              that Transaction.

(d)   Section 4 is hereby amended by adding the following new agreement:

      Actions Affecting Representations. Party B agrees not to take any action
      during the term of this Agreement or any Transaction hereunder that
      renders or could render any of the representations and warranties in this
      Agreement untrue, incorrect, or incomplete, and, if any event or condition
      occurs that renders or could render any such representation untrue,
      incorrect, or incomplete, Party B will immediately give written notice
      thereof to Party A.

(e)   Section 1(c). For purposes of Section 1(c) of the Agreement, the
      Transaction with External ID: 9382621N3 shall be the sole Transaction
      under the Agreement.

(f)   Transfer.

      (i)   Section 7 is hereby amended to read in its entirety as follows:

            Except as stated under Section 6(b)(ii), provided that to the extent
            Party A makes a transfer pursuant to Section 6(b)(ii) it will
            provide a prior written notice to the Rating Agencies of such
            transfer, neither Party A nor Party B is permitted to assign, novate
            or transfer (whether by way of security or otherwise) as a whole or
            in part any of its rights, obligations or interests under this
            Agreement or any Transaction without the prior written consent of
            the other party; provided, however, that (i) Party A may make such a
            transfer of this Agreement pursuant to a consolidation or
            amalgamation with, or merger with or into, or transfer of
            substantially all of its assets to, another entity, or an
            incorporation, reincorporation or reconstitution, and (ii) Party A
            may transfer this Agreement to any Person that is an office, branch
            or affiliate of Party A (any such Person, office, branch or
            affiliate, a Transferee) on at least five Business Days' prior
            written notice to Party B; provided that, with respect to clause
            (ii), (A) as of the date of such transfer the Transferee will not be
            required to withhold or deduct on account of a Tax from any payments
            under this Agreement unless the Transferee will be required to make
            payments of additional amounts pursuant to Section 2(d)(i)(4) of
            this Agreement in respect of such Tax; (B) a Termination Event or
            Event of Default does not occur under this Agreement as a result of
            such transfer; (C) such notice is accompanied by a written
            instrument pursuant to which the Transferee acquires and assumes the
            rights and obligations of Party A so transferred; and (D) Party A
            will be responsible for any costs or expenses incurred in connection
            with such transfer. Party B will execute such documentation as is
            reasonably deemed necessary by Party A for the effectuation of any
            such transfer. Notwithstanding the foregoing, no transfer shall be
            made unless the transferring party obtains a written acknowledgment
            from each of the Rating Agencies that, notwithstanding such
            transfer, the then-current ratings of the Certificates will not be
            reduced or withdrawn, provided, however, that this provision shall
            not apply to any transfer that is made pursuant to the provisions of
            Part 5(b) of this Agreement.

            Except as specified otherwise in the documentation evidencing a
            transfer, a transfer of all the obligations of Party A made in
            compliance with this Section 7 will constitute an acceptance and
            assumption of such obligations (and any related interests so
            transferred) by the Transferee, a novation of the transferee in
            place of Party A with respect to such obligations (and any related
            interests so transferred), and a release and discharge by Party B of
            Party A from, and an agreement by Party B not to make any claim for
            payment, liability, or otherwise against Party A with respect to,
            such obligations from and after the effective date of the transfer.

            In addition, Party A may transfer this Agreement without the prior
            written consent of the Trustee on behalf of Party B but with prior
            written notice to S&P and the Trustee, to an Affiliate of Party A
            that (i) satisfies the Hedge Counterparty Rating Requirements or
            that has furnished a guarantee, subject to S&P Ratings Condition, of
            the obligations under this Agreement from a guarantor that satisfies
            the Hedge Counterparty Rating Requirements and (ii) as of the date
            of such transfer such Affiliate will not be required to withhold or
            deduct on account of a Tax from any payments under this Agreement
            unless such Affiliate will be required to make payments of
            additional amounts pursuant to Section 2(d)(i)(4) of this Agreement
            in respect of such Tax; provided that satisfaction of the S&P
            Ratings Condition will be required unless such transfer is in
            connection with the assignment and assumption of this Agreement by
            such an Affiliate without modification of its terms, other than the
            following terms: party name, dates relevant to the effective date of
            such transfer, tax representations (provided that the
            representations in Part 2(a) are not modified) and any other
            representations regarding the status of such an Affiliate the
            substitute counterparty of the type included in Section (c) of this
            Part 5 and notice information (in which case, Party A shall provide
            written notice to S&P with respect thereto).

      (ii)  If an Eligible Replacement has made a Firm Offer (which means an
            offer that will become legally binding upon acceptance by Party B)
            to be the transferee pursuant to a Permitted Transfer, Party B
            shall, at Party A's written request and at Party A's expense, take
            any reasonable steps required to be taken by Party B to effect such
            transfer.

(g)   Trustee Capacity. It is expressly understood and agreed by the parties
      hereto that (i) this Agreement is executed and delivered by Wells Fargo
      Bank, N.A. (the Trustee) not individually or personally but solely as
      trustee of Credit Suisse Commercial Mortgage Trust 2007-C1 (the Trust), in
      the exercise of the powers and authority conferred and vested in it under
      the PSA, (ii) each of the representations, undertakings and agreements
      herein made on the part of Party B is made and intended not as personal
      representations, undertakings and agreements by the Trustee but is made
      and intended for the purpose of binding only the Trust, (iii) nothing
      herein contained shall be construed as creating any liability on the part
      of the Trustee, individually or personally, to perform any covenant either
      expressed or implied contained herein, all such liability, if any, being
      expressly waived by the parties hereto and by any Person claiming by,
      through or under the parties hereto and (iv) under no circumstances shall
      the Trustee be personally liable for the payment of any indebtedness or
      expenses of Party B or be liable for the breach or failure of any
      obligation, representation, warranty or covenant made or undertaken by
      Party B under this Agreement or any other related documents as to all of
      which recourse shall be had solely to the assets of the Trust in
      accordance with the terms of the PSA and this Agreement.

      Party B represents that:

      (i)   Status. The Trustee is trustee of the Trust whose appointment is
            valid and effective both under the laws of the State of New York and
            under the Pooling and Servicing Agreement, and the Trustee has the
            power to own assets in its capacity as trustee for the Trust;

      (ii)  Powers. In its capacity as trustee of the Trust, the Trustee has
            power under the Pooling and Servicing Agreement to execute this
            Agreement and any other documentation relating to this Agreement to
            which the Trustee is party, to deliver this Agreement and any other
            documentation relating to this Agreement that it is required by this
            Agreement to deliver and to perform its obligations (on behalf of
            the Trust) under this Agreement and any obligations (on behalf of
            the Trust) it has under any Credit Support Document to which the
            Trustee is party and has taken all necessary action to authorize
            such execution, delivery and performance;

      (iii) No Violation or Conflict. Such execution, delivery and performance
            do not violate or conflict with any law applicable to the Trustee or
            the Trust, any provision of the Pooling and Servicing Agreement, any
            order or judgment of any court or other agency of government
            applicable to the Trustee, the Trust or any assets of the Trust, or
            any contractual restriction binding on or affecting the Trustee, the
            Trust or any assets of the Trust;

      (iv)  Consents. All governmental and other consents that are required have
            been obtained by the Trustee with respect to this Agreement or any
            Credit Support Document to which the Trustee is party have been
            obtained and are in full force and effect and all conditions of such
            consents have been complied with; and

      (v)   Obligations Binding. The obligation of the Trustee under this
            Agreement and any Credit Support Document to which the Trustee is
            party constitute legal, valid and binding obligations of the
            Trustee, enforceable against the Trustee in accordance with their
            respective terms (subject to applicable bankruptcy, reorganization,
            insolvency, moratorium or similar laws affecting creditors' rights
            generally and subject, as to enforceability, to equitable principles
            of general application (regardless of whether enforcement is sought
            in a proceeding in equity or law)) and no circumstances are known to
            the Trustee which would or might prevent the Trustee from having
            recourse to the assets of the Trust for the purposes of meeting such
            obligations.

(h)   Proceedings. Party A irrevocably and unconditionally agrees that it shall
      not institute against or cause any other person to institute against, or
      join any other person in instituting against the Trust, any bankruptcy,
      reorganization, arrangement, insolvency or liquidation proceedings, or
      other proceedings under any federal or state bankruptcy, dissolution or
      similar law, for a period of one year and one day, or if longer the
      applicable preference period then in effect, following indefeasible
      payment in full of the Certificates. Nothing shall preclude, or be deemed
      to stop, Party A (i) from taking any action prior to the expiration of the
      aforementioned one year and one day period, or if longer the applicable
      preference period then in effect, in (A) any case or proceeding
      voluntarily filed or commenced by Party B or (B) any involuntary
      insolvency proceeding filed or commenced by a Person other than Party A,
      (ii) from commencing against Party B any legal action which is not a
      bankruptcy, reorganization, arrangement, insolvency, moratorium,
      liquidation or similar proceeding. Party A acknowledges that the foregoing
      provision will not confer upon it any additional rights or recourse
      against Party B other than is set forth in this Agreement. This provision
      shall survive termination of this Agreement.

(i)   Change of Account. Section 2(b) of this Agreement is hereby amended by the
      addition of the following after the word "delivery" in the first line
      thereof:-

      "to another account in the same legal and tax jurisdiction as the original
      account"

(j)   Pooling and Servicing Agreement. Party B will provide at least ten days'
      prior written notice to Party A of any proposed amendment or modification
      to the PSA (to the extent Party B is aware within such timeframe of such
      proposed amendment or modification) and Party B will obtain the prior
      written consent of Party A to any such amendment or modification, where
      such consent is required under the terms of the PSA.

(k)   Set-off. Notwithstanding any provision of this Agreement or any other
      existing or future agreements, each of Party A and Party B irrevocably
      waives as to itself any and all contractual rights it may have to set off,
      net, recoup or otherwise withhold or suspend or condition its payment or
      performance of any obligation to the other party under this Agreement
      against any obligation of one party hereto to the other party hereto
      arising outside of this Agreement. The provisions for set-offset forth in
      Section 6(e) of this Agreement shall not apply for purposes of this
      Transaction.

(l)   Waiver of Jury Trial. Each party waives, to the fullest extent permitted
      by applicable law, any right it may have to a trial by jury in respect of
      any suit, action or proceeding relating to this Agreement or any Credit
      Support Document. Each party certifies (i) that no representative, agent
      or attorney of the other party or any Credit Support Provider has
      represented, expressly or otherwise, that such other party would not, in
      the event of such a suit, action or proceeding, seek to enforce the
      foregoing waiver and (ii) acknowledges that it and the other party have
      been induced to enter into this Agreement and provide for any Credit
      Support Document, as applicable, by, among other things, the mutual
      waivers and certifications in this Section.

(m)   Consent to Recording. Each party (i) consents to the recording of the
      telephone conversations of trading and marketing personnel of the parties
      and their Affiliates in connection with this Agreement or any potential
      transaction and (ii) if applicable, agrees to obtain any necessary consent
      of, and give notice of such recording to, such personnel of it and its
      Affiliates.

(n)   Severability. If any term, provision, covenant, or condition of this
      Agreement, or the application thereof to any party or circumstance, shall
      be held to be illegal, invalid or unenforceable (in whole or in part) for
      any reason, the remaining terms, provisions, covenants and conditions
      hereof shall continue in full force and effect as if this Agreement had
      been executed with the illegal, invalid or unenforceable portion
      eliminated, so long as this Agreement as so modified continues to express,
      without material change, the original intentions of the parties as to the
      subject matter of this Agreement and the deletion of such portion of this
      Agreement will not substantially impair the respective benefits or
      expectations of the parties to this Agreement.

(o)   Notice of Certain Events or Circumstances. Each party agrees, upon
      learning of the occurrence or existence of any event or condition that
      constitutes (or that with the giving of notice or passage of time or both
      would constitute) an Event of Default or Termination Event with respect to
      such party, promptly to give the other party notice of such event or
      condition (or, in lieu of giving notice of such event or condition in the
      case of an event or condition that with the giving of notice or passage of
      time or both would constitute an Event of Default or Termination Event
      with respect to the party, to cause such event or condition to cease to
      exist before becoming an Event of Default or Termination Event); provided
      that failure to provide notice of such event or condition pursuant to this
      Part 5(o) shall not constitute an Event of Default or a Termination Event.

(p)   Regarding Party A. Party B acknowledges and agrees that Party A has had
      and will have no involvement in and, accordingly Party A accepts no
      responsibility for: (i) the establishment, structure, or choice of assets
      of Party B; (ii) the selection of any person performing services for or
      acting on behalf of Party B; (iii) the selection of Party A as the
      Counterparty; (iv) the terms of the Certificates; (v) the preparation of
      or passing on the disclosure and other information contained in any
      prospectus and prospectus supplement for the Certificates, the Pooling and
      Servicing Agreement, or any other agreements or documents used by Party B
      or any other party in connection with the marketing and sale of the
      Certificates (other than with respect to disclosure about Party A); (vi)
      the ongoing operations and administration of Party B, including the
      furnishing of any information to Party B which is not specifically
      required under this Agreement; or (vii) any other aspect of Party B's
      existence.

(q)   Rating Agency Condition. This Agreement will not be amended unless Party B
      shall have received prior written confirmation from each of the Rating
      Agencies (as defined in the Pooling and Servicing Agreement) that such
      amendment will not cause S&P, Moody's or Fitch to downgrade or withdraw
      its then current ratings of any outstanding Offered Certificates. In
      addition, Party B shall not waive any right hereunder without the prior
      written consent of each of the Rating Agencies.

(r)   Limited Recourse. Notwithstanding anything herein to the contrary, Party A
      agrees that the liability of Party B under this Agreement and the
      Confirmation is limited in recourse to only the amounts with respect to
      interest on the Class A-MFL Regular Interest on deposit in the Floating
      Rate Account (as such terms are defined in the Pooling and Servicing
      Agreement) and any Yield Maintenance Charges distributable in respect of
      the Class A-MFL Regular Interest pursuant to Section 4.01(j) of the
      Pooling and Servicing Agreement (plus all payment received by Party B from
      a replacement swap counterparty, if any), if any, held by the Trustee in
      accordance with the Pooling and Servicing Agreement. Party A shall have no
      right to institute any proceedings for the enforcement of a lien on any
      Trust Assets except to the extent of interest on the Class A-MFL Regular
      Interest on deposit in the Floating Rate Account and any Yield Maintenance
      Charges distributable in respect of the Class A-MFL Regular Interest
      pursuant to Section 4.01(j) of the Pooling and Servicing Agreement (plus
      all payment received by Party B from a replacement swap counterparty, if
      any). Upon the realization of the Trust Estate and distribution of the net
      proceeds thereof with respect to the Class A-MFL Regular Interest in
      accordance with Section 4.01 of the Pooling and Servicing Agreement (plus
      all payment received by Party B from a replacement swap counterparty, if
      any), Party A shall not be entitled to take any further steps against
      Party B to recover any sums due but still unpaid hereunder or under the
      Pooling and Servicing Agreement and all claims hereunder and all claims in
      respect of the Pooling and Servicing Agreement shall be extinguished. For
      the avoidance of doubt, the parties agree that Party B shall be under no
      obligation to pay costs, expenses or termination payments due hereunder,
      except to the extent such amounts have been paid to Party B by a
      replacement swap provider after netting out costs and expenses incurred by
      Party B or to the extent of funds available in the Floating Rate Account
      in accordance with Section 9.02(b) of the Pooling and Servicing Agreement.

      For the avoidance of doubt, in the event the Master Servicer fails to pay
      Party A any Class A-MFL Net Fixed Swap Payment in accordance with the
      Pooling and Servicing Agreement, Party A shall not be precluded from
      proceeding against the Master Servicer to recover such unpaid Net Fixed
      Swap Payment to the extent such amount remains unpaid by Party B or any
      other party.

(s)   Compliance with Regulation AB.

      (i)   Party A acknowledges that for so long as there are reporting
            obligations with respect to this Transaction under Regulation AB,
            the Depositor, acting on behalf of the Credit Suisse Commercial
            Mortgage Trust 2007-C1 (the Issuing Entity), is required under
            Regulation AB under the Securities Act of 1933, as amended, and the
            Securities Exchange Act of 1934, as amended (Regulation AB), to
            disclose certain information set forth in Regulation AB regarding
            Party A or its group of affiliated entities, if applicable,
            depending on the aggregate "significance percentage" of this
            Agreement and any other derivative contracts between Party A or its
            group of affiliated entities, if applicable, and Party B, as
            calculated from time to time in accordance with Item 1115 of
            Regulation AB.

      (ii)  So long as there are reporting obligations with respect to this
            Transaction under Regulation AB, if the Depositor determines,
            reasonably and in good faith, that the significance percentage of
            this Agreement has increased to nine (9) percent or more, then the
            Depositor may request on a Business Day on or after the date of such
            determination from Party A the same information set forth in Item
            1115(b)(1) of Regulation AB that would have been required if the
            significance percentage had in fact increased to ten (10) percent,
            along with any necessary auditors' consent (such request, a 10% Swap
            Disclosure Request and such requested information, subject to the
            last sentence of this paragraph, is the 10% Swap Financial
            Disclosure). Party B or the Depositor shall provide Party A with the
            calculations and any other information reasonably requested by Party
            A with respect to the Depositor's determination that led to the 10%
            Swap Disclosure Request. The parties hereto further agree that the
            10% Swap Financial Disclosure provided to meet the 10% Swap
            Disclosure Request may be, solely at Party A's option, either the
            information set forth in Item 1115(b)(1) or Item 1115(b)(2) of
            Regulation AB.

      (iii) So long as there are reporting obligations with respect to this
            Transaction under Regulation AB, upon the occurrence of a 10% Swap
            Disclosure Request, Party A, at its own expense, shall (i) provide
            the Depositor with the 10% Swap Financial Disclosure, (ii) secure
            another entity to replace Party A as party to this Agreement on
            terms substantially similar to this Agreement which entity is able
            to (A) provide the 10% Swap Financial Disclosure and (B) provide an
            indemnity to the Depositor, reasonably satisfactory to the
            Depositor, in relation to the 10% Swap Financial Disclosure or (iii)
            obtain a guaranty of Party A's obligations under this Agreement from
            an affiliate of Party A that is able to (A) provide the 10% Swap
            Financial Disclosure, such that disclosure provided in respect of
            the affiliate will, in the judgment of counsel to the Depositor,
            satisfy any disclosure requirements applicable to Party A, and cause
            such affiliate to provide 10% Swap Financial Disclosure and (B)
            provide an indemnity to the Depositor, reasonably satisfactory to
            the Depositor, in relation to the 10% Swap Financial Disclosure. If
            permitted by Regulation AB, any required 10% Swap Financial
            Disclosure may be provided by incorporation by reference from
            reports filed pursuant to the Securities Exchange Act.

      (iv)  So long as there are reporting obligations with respect to this
            Transaction under Regulation AB, as amended, if the Depositor
            determines, reasonably and in good faith, that the significance
            percentage of this Agreement has increased to nineteen (19) percent
            or more, then the Depositor may request on a Business Day on or
            after the date of such determination from Party A the same
            information set forth in Item 1115(b)(2) of Regulation AB that would
            have been required if the significance percentage had in fact
            increased to twenty (20) percent, along with any necessary auditors
            consent (such request, a 20% Swap Disclosure Request and such
            requested information is the 20% Swap Financial Disclosure). Party B
            or the Depositor shall provide Party A with the calculations and any
            other information reasonably requested by Party A with respect to
            the Depositor's determination that led to the 20% Swap Disclosure
            Request.

      (v)   So long as there are reporting obligations with respect to this
            Transaction under Regulation AB, upon the occurrence of a 20% Swap
            Disclosure Request, Party A, at its own expense, shall (i) provide
            the Depositor with the 20% Swap Financial Disclosure, (ii) secure
            another entity to replace Party A as party to this Agreement on
            terms substantially similar to this Agreement which entity is able
            to (A) provide the 20% Swap Financial Disclosure and (B) provide an
            indemnity to the Depositor, reasonably satisfactory to the
            Depositor, in relation to the 20% Swap Financial Disclosure or (iii)
            obtain a guaranty of Party A's obligations under this Agreement from
            an affiliate of Party A that is able to (A) provide the 20% Swap
            Financial Disclosure, such that disclosure provided in respect of
            the affiliate will, in the judgment of counsel to the Depositor,
            satisfy any disclosure requirements applicable to Party A, and cause
            such affiliate to provide 20% Swap Financial Disclosure and (B)
            provide an indemnity to the Depositor, reasonably satisfactory to
            the Depositor, in relation to the 20% Swap Financial Disclosure. If
            permitted by Regulation AB, any required 20% Swap Financial
            Disclosure may be provided by incorporation by reference from
            reports filed pursuant to the Securities Exchange Act.

(t)   Third Party Beneficiary.

      Depositor shall be an express third party beneficiary of this Agreement as
      if a party hereto to the extent of the Depositor 's rights explicitly
      specified herein

(u)   Credit Support Default. Section 5(a)(iii)(1) of this Agreement is hereby
      deleted and replaced with the following:

      "(1) The occurrence of an Event of Default under any Credit Support
      Document if such Event of Default is continuing after any applicable grace
      period has elapsed;"

(v)   Tax. Notwithstanding the definition of "Indemnifiable Tax" in Section 14
      of this Agreement, in relation to payments by Party A, any Tax shall be an
      Indemnifiable Tax and, in relation to payments by Party B, no Tax shall be
      an Indemnifiable Tax.

(w)   Calculations. Notwithstanding Section 6 of this Agreement, so long as
      Party A is (A) the sole Affected Party (other than pursuant to an
      Illegality or a Tax Event) or (B) the Defaulting Party in respect of any
      Event of Default, paragraphs (i) to (vii) below shall apply:

      (i)   Notwithstanding Part 1(f) hereof, "Market Quotation" shall apply,
            and the definition of "Market Quotation" shall be deleted in its
            entirety and replaced with the following:

      ""Market Quotation" means, with respect to one or more Terminated
      Transactions, a Live Bid which is (1) made by a Reference Market-maker
      that is an Eligible Replacement, (2) for an amount that would be paid to
      Party B (expressed as a negative number) or by Party B (expressed as a
      positive number) in consideration of an agreement between Party B and such
      Reference Market-maker to enter into a transaction (the "Replacement
      Transaction") that would have the effect of preserving for such party the
      economic equivalent of any payment or delivery (whether the underlying
      obligation was absolute or contingent and assuming the satisfaction of
      each applicable condition precedent) by the parties under Section 2(a)(i)
      in respect of such Terminated Transactions or group of Terminated
      Transactions that would, but for the occurrence of the relevant Early
      Termination Date, have been required after that date, (3) made on the
      basis that Unpaid Amounts in respect of the Terminated Transaction or
      group of Transactions are to be excluded but, without limitation, any
      payment or delivery that would, but for the relevant Early Termination
      Date, have been required (assuming satisfaction of each applicable
      condition precedent) after that Early Termination Date is to be included
      and (4) made in respect of a Replacement Transaction with terms
      substantially the same as those of this Agreement (save for the exclusion
      of provisions relating to Transactions that are not Terminated
      Transactions)."

      (ii)  The definition of "Settlement Amount" shall be deleted in its
            entirety and replaced with the following:

      ""Settlement Amount" means, with respect to any Early Termination Date, an
      amount (as determined by Party B based on information provided by the
      Reference Market-Maker) equal to the Termination Currency Equivalent of
      the amount (whether positive or negative) of any Market Quotation for the
      relevant Terminated Transaction or group of Terminated Transactions that
      is accepted by Party B so as to become legally binding, provided that:

      (1)   If, on the day falling ten Local Business Days after the day on
            which the Early Termination Date is designated or such later day as
            Party B may specify in writing to Party A (but in either case no
            later than the Early Termination Date) (such day the "Latest
            Settlement Amount Determination Day"), no Market Quotation for the
            relevant Terminated Transaction or group of Terminated Transactions
            has been accepted by Party B so as to become legally binding and one
            or more Market Quotations have been made and remain capable of
            becoming legally binding upon acceptance, the Settlement Amount
            shall equal the Termination Currency Equivalent of the amount
            (whether positive or negative) of the lowest of such Market
            Quotations (for the avoidance of doubt, the lowest of such Market
            Quotations shall be the lowest Market Quotation of such Market
            Quotations expressed as a positive number or, if any of such Market
            Quotations is expressed as a negative number, the Market Quotation
            expressed as a negative number with the largest absolute value); and

      (2)   If, on the Latest Settlement Amount Determination Day, no Market
            Quotation for the relevant Terminated Transaction or group of
            Terminated Transactions is accepted by Party B so as to become
            legally binding and no Market Quotations have been made and remain
            capable of becoming legally binding upon acceptance, the Settlement
            Amount shall equal Party B's Loss (whether positive or negative and
            without reference to any Unpaid Amounts) for the relevant Terminated
            Transaction or group of Terminated Transactions."

      (iii) For the purpose of clause (4) of the definition of Market Quotation,
            Party B shall determine, based on information provided by the
            Reference Market-Maker, whether a Live Bid is made in respect of a
            Replacement Transaction with commercial terms substantially the same
            as those of this Agreement (save for the exclusion of provisions
            relating to Transactions that are not Terminated Transactions).

      (iv)  At any time on or before the Latest Settlement Amount Determination
            Day at which two or more Market Quotations remain capable of
            becoming legally binding upon acceptance, Party B shall be entitled
            to accept only the lowest of such Market Quotations (for the
            avoidance of doubt, the lowest of such Market Quotations shall be
            the lowest Market Quotation of such Market Quotations expressed as a
            positive number or, if any of such Market Quotations is expressed as
            a negative number, the Market Quotation expressed as a negative
            number with the largest absolute value).

      (v)   If Party B requests Party A in writing to obtain Market Quotations,
            Party A shall use its reasonable efforts to do so before the Latest
            Settlement Amount Determination Day.

      (vi)  If the Settlement Amount is a negative number, Section 6(e)(i)(3) of
            this Agreement shall be deleted in its entirety and replaced with
            the following:

      "Second Method and Market Quotation. If Second Method and Market Quotation
      apply, (1) Party B shall pay to Party A an amount equal to the absolute
      value of the Settlement Amount in respect of the Terminated Transactions,
      (2) Party B shall pay to Party A the Termination Currency Equivalent of
      the Unpaid Amounts owing to Party A and (3) Party A shall pay to Party B
      the Termination Currency Equivalent of the Unpaid Amounts owing to Party
      B; provided that, (i) the amounts payable under (2) and (3) shall be
      subject to netting in accordance with Section 2(c) of this Agreement and
      (ii) notwithstanding any other provision of this Agreement, any amount
      payable by Party A under (3) shall not be netted-off against any amount
      payable by Party B under (1)."

      (vii) For purposes of this Part 5(w),

      "Eligible Replacement" means an entity (A) satisfying the Hedge
      Counterparty Ratings Requirement or (B) whose present and future
      obligations owing to Party B are guaranteed pursuant to a guarantee
      acceptable to S&P provided by a guarantor satisfying the Hedge
      Counterparty Ratings Requirements.

      "Live Bid" means a firm quotation from a Reference Market-maker that is an
      Eligible Replacement which, when made, was capable of becoming legally
      binding upon acceptance.

<PAGE>

IN WITNESS WHEREOF, the parties have executed this document by their duly
authorized officers with effect from the date so specified on the first page
hereof.

Credit Suisse International           Wells Fargo Bank, N.A., not in its
                                      individual capacity but solely as
                                      Trustee on behalf of Credit Suisse
                                      Commercial Mortgage Trust 2007-C1

By: /s/ Marlene Nobile                By: /s/ Amy Mofsenson
   -----------------------------          -----------------------------
Name: Marlene Nobile                  Name: Amy Mofsenson
Title: Authorized Signatory           Title: Vice President

By: /s/ Steven J. Reis
   -----------------------------
Name: Steven J. Reis
Title: Authorized SignatoryExhibit 10.5

                                                                   Executed Copy
                                                                             CSA

         (Bilateral Form) (ISDA Agreements Subject to New York Law Only)
                                     ISDA(R)

              International Swaps and Derivatives Association, Inc.
                              CREDIT SUPPORT ANNEX

                             to the Schedule to the

                              ISDA MASTER AGREEMENT

                           dated as of March 16, 2007

                                     between

   Credit Suisse International    and      WELLS FARGO BANK, N.A., not in its
                                          individual or corporate capacity but
                                          solely as Trustee on behalf of CREDIT
                                        SUISSE COMMERCIAL MORTGAGE TRUST 2007-C1
--------------------------------        ----------------------------------------
            ("Party A")                                  ("Party B")

This Annex supplements, forms part of, and is subject to, the above-referenced
Agreement, is part of its Schedule and is a Credit Support Document under this
Agreement with respect to each party.

Accordingly, the parties agree as follows:--

Paragraph 1. Interpretation

      (a) Definitions and Inconsistency. Capitalized terms not otherwise defined
herein or elsewhere in this Agreement have the meanings specified pursuant to
Paragraph 12, and all references in this Annex to Paragraphs are to Paragraphs
of this Annex. In the event of any inconsistency between this Annex and the
other provisions of this Schedule, this Annex will prevail, and in the event of
any inconsistency between Paragraph 13 and the other provisions of this Annex,
Paragraph 13 will prevail.

      (b) Secured Party and Pledgor. All references in this Annex to the
"Secured Party" will be to either party when acting in that capacity and all
corresponding references to the "Pledgor" will be to the other party when acting
in that capacity; provided, however, that if Other Posted Support is held by a
party to this Annex, all references herein to that party as the Secured Party
with respect to that Other Posted Support will be to that party as the
beneficiary thereof and will not subject that support or that party as the
beneficiary thereof to provisions of law generally relating to security
interests and secured parties.

Paragraph 2. Security Interest

Each party, as the Pledgor, hereby pledges to the other party, as the Secured
Party, as security for its Obligations, and grants to the Secured Party a first
priority continuing security interest in, lien on and right of Set-off against
all Posted Collateral Transferred to or received by the Secured Party hereunder.
Upon the Transfer by the Secured Party to the Pledgor of Posted Collateral, the
security interest and lien granted hereunder on that Posted Collateral will be
released immediately and, to the extent possible, without any further action by
either party.

Paragraph 3. Credit Support Obligations

      (a) Delivery Amount. Subject to Paragraphs 4 and 5, upon a demand made by
the Secured Party on or promptly following a Valuation Date, if the Delivery
Amount for that Valuation Date equals or exceeds the Pledgor's Minimum Transfer
Amount, then the Pledgor will Transfer to the Secured Party Eligible Credit
Support having a Value as of the date of Transfer at least equal to the
applicable Delivery Amount (rounded pursuant to Paragraph 13). Unless otherwise
specified in Paragraph 13, the "Delivery Amount" applicable to the Pledgor for
any Valuation Date will equal the amount by which:

      (i)   the Credit Support Amount exceeds

      (ii)  the Value as of that Valuation Date of all Posted Credit Support
            held by the Secured Party.

      (b) Return Amount. Subject to Paragraphs 4 and 5, upon a demand made by
the Pledgor on or promptly following a Valuation Date, if the Return Amount for
that Valuation Date equals or exceeds the Secured Party's Minimum Transfer
Amount, then the Secured Party will Transfer to the Pledgor Posted Credit
Support specified by the Pledgor in that demand having a Value as of the date of
Transfer as close as practicable to the applicable Return Amount (rounded
pursuant to Paragraph 13). Unless otherwise specified in Paragraph 13, the
"Return Amount" applicable to the Secured Party for any Valuation Date will
equal the amount by which:

      (i)   the Value as of that Valuation Date of all Posted Credit Support
            held by the Secured Party exceeds

      (ii)  the Credit Support Amount.

"Credit Support Amount" means, unless otherwise specified in Paragraph 13, for
any Valuation Date (i) the Secured Party's Exposure for that Valuation Date plus
(ii) the aggregate of all Independent Amounts applicable to the Pledgor, if any,
minus (iii) all Independent Amounts applicable to the Secured Party, if any,
minus (iv) the Pledgor's Threshold; provided, however, that the Credit Support
Amount will be deemed to be zero whenever the calculation of Credit Support
Amount yields a number less than zero.

Paragraph 4. Conditions Precedent, Transfer Timing, Calculations and
Substitutions

      (a) Conditions Precedent. Each Transfer obligation of the Pledgor under
Paragraphs 3 and 5 and of the Secured Party under Paragraphs 3, 4(d)(ii), 5 and
6(d) is subject to the conditions precedent that:

      (i)   no Event of Default, Potential Event of Default or Specified
            Condition has occurred and is continuing with respect to the other
            party; and

      (ii)  no Early Termination Date for which any unsatisfied payment
            obligations exist has occurred or been designated as the result of
            an Event of Default or Specified Condition with respect to the other
            party.

      (b) Transfer Timing. Subject to Paragraphs 4(a) and 5 and unless otherwise
specified, if a demand for the Transfer of Eligible Credit Support or Posted
Credit Support is made by the Notification Time, then the relevant

      Transfer will be made not later than the close of business on the next
Local Business Day; if a demand is made after the Notification Time, then the
relevant Transfer will be made not later than the close of business on the
second Local Business Day thereafter.

      (c) Calculations. All calculations of Value and Exposure for purposes of
Paragraphs 3 and 6(d) will be made by the Valuation Agent as of the Valuation
Time. The Valuation Agent will notify each party (or the other party, if the
Valuation Agent is a party) of its calculations not later than the Notification
Time on the Local Business Day following the applicable Valuation Date (or in
the case of Paragraph 6(d), following the date of calculation).

      (d) Substitutions.

      (i)   Unless otherwise specified in Paragraph 13, upon notice to the
            Secured Party specifying the items of Posted Credit Support to be
            exchanged, the Pledgor may, on any Local Business Day, Transfer to
            the Secured Party substitute Eligible Credit Support (the
            "Substitute Credit Support"); and

      (ii)  subject to Paragraph 4(a), the Secured Party will Transfer to the
            Pledgor the items of Posted Credit Support specified by the Pledgor
            in its notice not later than the Local Business Day following the
            date on which the Secured Party receives the Substitute Credit
            Support, unless otherwise specified in Paragraph 13 (the
            "Substitution Date"); provided that the Secured Party will only be
            obligated to Transfer Posted Credit Support with a Value as of the
            date of Transfer of that Posted Credit Support equal to the Value as
            of that date of the Substitute Credit Support.

Paragraph 5. Dispute Resolution

If a party (a "Disputing Party") disputes (I) the Valuation Agent's calculation
of a Delivery Amount or a Return Amount or (II) the Value of any Transfer of
Eligible Credit Support or Posted Credit Support, then (1) the Disputing Party
will notify the other party and the Valuation Agent (if the Valuation Agent is
not the other party) not later than the close of business on the Local Business
Day following (X) the date that the demand is made under Paragraph 3 in the case
of (I) above or (Y) the date of Transfer in the case of (II) above, (2) subject
to Paragraph 4(a), the appropriate party will Transfer the undisputed amount to
the other party not later than the close of business on the Local Business Day
following (X) the date that the demand is made under Paragraph 3 in the case of
(I) above or (Y) the date of Transfer in the case of (II) above, (3) the parties
will consult with each other in an attempt to resolve the dispute and (4) if
they fail to resolve the dispute by the Resolution Time, then:

      (i)   In the case of a dispute involving a Delivery Amount or Return
            Amount, unless otherwise specified in Paragraph 13, the Valuation
            Agent will recalculate the Exposure and the Value as of the
            Recalculation Date by:

            (A)   utilizing any calculations of Exposure for the Transactions
                  (or Swap Transactions) that the parties have agreed are not in
                  dispute;

            (B)   calculating the Exposure for the Transactions (or Swap
                  Transactions) in dispute by seeking four actual quotations at
                  mid-market from Reference Market-makers for purposes of
                  calculating Market Quotation, and taking the arithmetic
                  average of those obtained; provided that if four quotations
                  are not available for a particular Transaction (or Swap
                  Transaction), then fewer than four quotations may be used for
                  that Transaction (or Swap Transaction); and if no quotations
                  are available for a particular Transaction (or Swap
                  Transaction), then the Valuation Agent's original calculations
                  will be used for that Transaction (or Swap Transaction); and

            (C)   utilizing the procedures specified in Paragraph 13 for
                  calculating the Value, if disputed, of Posted Credit Support.

      (ii)  In the case of a dispute involving the Value of any Transfer of
            Eligible Credit Support or Posted Credit Support, the Valuation
            Agent will recalculate the Value as of the date of Transfer pursuant
            to Paragraph 13. Following a recalculation pursuant to this
            Paragraph, the Valuation Agent will notify each party (or the other
            party, if the Valuation Agent is a party) not later than the
            Notification Time on the Local Business Day following the Resolution
            Time. The appropriate party will, upon demand following that notice
            by the Valuation Agent or a resolution pursuant to (3) above and
            subject to Paragraphs 4(a) and 4(b), make the appropriate Transfer.
            Paragraph 6. Holding and Using Posted Collateral

      (a) Care of Posted Collateral. Without limiting the Secured Party's rights
under Paragraph 6(c), the Secured Party will exercise reasonable care to assure
the safe custody of all Posted Collateral to the extent required by applicable
law, and in any event the Secured Party will be deemed to have exercised
reasonable care if it exercises at least the same degree of care as it would
exercise with respect to its own property. Except as specified in the preceding
sentence, the Secured Party will have no duty with respect to Posted Collateral,
including, without limitation, any duty to collect any Distributions, or enforce
or preserve any rights pertaining thereto.

      (b) Eligibility to Hold Posted Collateral; Custodians.

      (i)   General. Subject to the satisfaction of any conditions specified in
            Paragraph 13 for holding Posted Collateral, the Secured Party will
            be entitled to hold Posted Collateral or to appoint an agent (a
            "Custodian") to hold Posted Collateral for the Secured Party. Upon
            notice by the Secured Party to the Pledgor of the appointment of a
            Custodian, the Pledgor's obligations to make any Transfer will be
            discharged by making the Transfer to that Custodian. The holding of
            Posted Collateral by a Custodian will be deemed to be the holding of
            that Posted Collateral by the Secured Party for which the Custodian
            is acting.

      (ii)  Failure to Satisfy Conditions. If the Secured Party or its Custodian
            fails to satisfy any conditions for holding Posted Collateral, then
            upon a demand made by the Pledgor, the Secured Party will, not later
            than five Local Business Days after the demand, Transfer or cause
            its Custodian to Transfer all Posted Collateral held by it to a
            Custodian that satisfies those conditions or to the Secured Party if
            it satisfies those conditions.

      (iii) Liability. The Secured Party will be liable for the acts or
            omissions of its Custodian to the same extent that the Secured Party
            would be liable hereunder for its own acts or omissions.

      (c) Use of Posted Collateral. Unless otherwise specified in Paragraph 13
and without limiting the rights and obligations of the parties under Paragraphs
3, 4(d)(ii), 5, 6(d) and 8, if the Secured Party is not a Defaulting Party or an
Affected Party with respect to a Specified Condition and no Early Termination
Date has occurred or been designated as the result of an Event of Default or
Specified Condition with respect to the Secured Party, then the Secured Party
will, notwithstanding Section 9-207 of the New York Uniform Commercial Code,
have the right to:

      (i)   sell, pledge, rehypothecate, assign, invest, use, commingle or
            otherwise dispose of, or otherwise use in its business any Posted
            Collateral it holds, free from any claim or right of any nature
            whatsoever of the Pledgor, including any equity or right of
            redemption by the Pledgor; and

      (ii)  register any Posted Collateral in the name of the Secured Party, its
            Custodian or a nominee for either.

For purposes of the obligation to Transfer Eligible Credit Support or Posted
Credit Support pursuant to Paragraphs 3 and 5 and any rights or remedies
authorized under this Agreement, the Secured Party will be deemed to continue to
hold all Posted Collateral and to receive Distributions made thereon, regardless
of whether the Secured Party has exercised any rights with respect to any Posted
Collateral pursuant to (i) or (ii) above.

      (d) Distributions and Interest Amount.

      (i)   Distributions. Subject to Paragraph 4(a), if the Secured Party
            receives or is deemed to receive Distributions on a Local Business
            Day, it will Transfer to the Pledgor not later than the following
            Local Business Day any Distributions it receives or is deemed to
            receive to the extent that a Delivery Amount would not be created or
            increased by that Transfer, as calculated by the Valuation Agent
            (and the date of calculation will be deemed to be a Valuation Date
            for this purpose).

      (ii)  Interest Amount. Unless otherwise specified in Paragraph 13 and
            subject to Paragraph 4(a), in lieu of any interest, dividends or
            other amounts paid or deemed to have been paid with respect to
            Posted Collateral in the form of Cash (all of which may be retained
            by the Secured Party), the Secured Party will Transfer to the
            Pledgor at the times specified in Paragraph 13 the Interest Amount
            to the extent that a Delivery Amount would not be created or
            increased by that Transfer, as calculated by the Valuation Agent
            (and the date of calculation will be deemed to be a Valuation Date
            for this purpose). The Interest Amount or portion thereof not
            Transferred pursuant to this Paragraph will constitute Posted
            Collateral in the form of Cash and will be subject to the security
            interest granted under Paragraph 2.

Paragraph 7. Events of Default

For purposes of Section 5(a)(iii)(1) of this Agreement, an Event of Default will
exist with respect to a party if:

      (i)   that party fails (or fails to cause its Custodian) to make, when
            due, any Transfer of Eligible Collateral, Posted Collateral or the
            Interest Amount, as applicable, required to be made by it and that
            failure continues for two Local Business Days after notice of that
            failure is given to that party;

      (ii)  that party fails to comply with any restriction or prohibition
            specified in this Annex with respect to any of the rights specified
            in Paragraph 6(c) and that failure continues for five Local Business
            Days after notice of that failure is given to that party; or

      (iii) that party fails to comply with or perform any agreement or
            obligation other than those specified in Paragraphs 7(i) and 7(ii)
            and that failure continues for 30 days after notice of that failure
            is given to that party.

Paragraph 8. Certain Rights and Remedies

      (a) Secured Party's Rights and Remedies. If at any time (1) an Event of
Default or Specified Condition with respect to the Pledgor has occurred and is
continuing or (2) an Early Termination Date has occurred or been designated as
the result of an Event of Default or Specified Condition with respect to the
Pledgor, then, unless the Pledgor has paid in full all of its Obligations that
are then due, the Secured Party may exercise one or more of the following rights
and remedies:

      (i)   all rights and remedies available to a secured party under
            applicable law with respect to Posted Collateral held by the Secured
            Party;

      (ii)  any other rights and remedies available to the Secured Party under
            the terms of Other Posted Support, if any;

      (iii) the right to Set-off any amounts payable by the Pledgor with respect
            to any Obligations against any Posted Collateral or the Cash
            equivalent of any Posted Collateral held by the Secured Party (or
            any obligation of the Secured Party to Transfer that Posted
            Collateral); and

      (iv)  the right to liquidate any Posted Collateral held by the Secured
            Party through one or more public or private sales or other
            dispositions with such notice, if any, as may be required under
            applicable law, free from any claim or right of any nature
            whatsoever of the Pledgor, including any equity or right of
            redemption by the Pledgor (with the Secured Party having the right
            to purchase any or all of the Posted Collateral to be sold) and to
            apply the proceeds (or the Cash equivalent thereof) from the
            liquidation of the Posted Collateral to any amounts payable by the
            Pledgor with respect to any Obligations in that order as the Secured
            Party may elect.

Each party acknowledges and agrees that Posted Collateral in the form of
securities may decline speedily in value and is of a type customarily sold on a
recognized market, and, accordingly, the Pledgor is not entitled to prior notice
of any sale of that Posted Collateral by the Secured Party, except any notice
that is required under applicable law and cannot be waived.

      (b) Pledgor's Rights and Remedies. If at any time an Early Termination
Date has occurred or been designated as the result of an Event of Default or
Specified Condition with respect to the Secured Party, then (except in the case
of an Early Termination Date relating to less than all Transactions (or Swap
Transactions) where the Secured Party has paid in full all of its obligations
that are then due under Section 6(e) of this Agreement):

      (i)   the Pledgor may exercise all rights and remedies available to a
            pledgor under applicable law with respect to Posted Collateral held
            by the Secured Party;

      (ii)  the Pledgor may exercise any other rights and remedies available to
            the Pledgor under the terms of Other Posted Support, if any;

      (iii) the Secured Party will be obligated immediately to Transfer all
            Posted Collateral and the Interest Amount to the Pledgor; and

      (iv)  to the extent that Posted Collateral or the Interest Amount is not
            so Transferred pursuant to (iii) above, the Pledgor may:

            (A)   Set-off any amounts payable by the Pledgor with respect to any
                  Obligations against any Posted Collateral or the Cash
                  equivalent of any Posted Collateral held by the Secured Party
                  (or any obligation of the Secured Party to Transfer that
                  Posted Collateral); and

            (B)   to the extent that the Pledgor does not Set-off under (iv)(A)
                  above, withhold payment of any remaining amounts payable by
                  the Pledgor with respect to any Obligations, up to the Value
                  of any remaining Posted Collateral held by the Secured Party,
                  until that Posted Collateral is Transferred to the Pledgor.

      (c) Deficiencies and Excess Proceeds. The Secured Party will Transfer to
the Pledgor any proceeds and Posted Credit Support remaining after liquidation,
Set-off and/or application under Paragraphs 8(a) and 8(b) after satisfaction in
full of all amounts payable by the Pledgor with respect to any Obligations; the
Pledgor in all events will remain liable for any amounts remaining unpaid after
any liquidation, Set-off and/or application under Paragraphs 8(a) and 8(b).

      (d) Final Returns. When no amounts are or thereafter may become payable by
the Pledgor with respect to any Obligations (except for any potential liability
under Section 2(d) of this Agreement), the Secured Party will Transfer to the
Pledgor all Posted Credit Support and the Interest Amount, if any.

Paragraph 9. Representations

Each party represents to the other party (which representations will be deemed
to be repeated as of each date on which it, as the Pledgor, Transfers Eligible
Collateral) that:

      (i)   it has the power to grant a security interest in and lien on any
            Eligible Collateral it Transfers as the Pledgor and has taken all
            necessary actions to authorize the granting of that security
            interest and lien;

      (ii)  it is the sole owner of or otherwise has the right to Transfer all
            Eligible Collateral it Transfers to the Secured Party hereunder,
            free and clear of any security interest, lien, encumbrance or other
            restrictions other than the security interest and lien granted under
            Paragraph 2;

      (iii) upon the Transfer of any Eligible Collateral to the Secured Party
            under the terms of this Annex, the Secured Party will have a valid
            and perfected first priority security interest therein (assuming
            that any central clearing corporation or any third-party financial
            intermediary or other entity not within the control of the Pledgor
            involved in the Transfer of that Eligible Collateral gives the
            notices and takes the action required of it under applicable law for
            perfection of that interest); and

      (iv)  the performance by it of its obligations under this Annex will not
            result in the creation of any security interest, lien or other
            encumbrance on any Posted Collateral other than the security
            interest and lien granted under Paragraph 2.

Paragraph 10. Expenses

      (a) General. Except as otherwise provided in Paragraphs 10(b) and 10(c),
each party will pay its own costs and expenses in connection with performing its
obligations under this Annex and neither party will be liable for any costs and
expenses incurred by the other party in connection herewith.

      (b) Posted Credit Support. The Pledgor will promptly pay when due all
taxes, assessments or charges of any nature that are imposed with respect to
Posted Credit Support held by the Secured Party upon becoming aware of the same,
regardless of whether any portion of that Posted Credit Support is subsequently
disposed of under Paragraph 6(c), except for those taxes, assessments and
charges that result from the exercise of the Secured Party's rights under
Paragraph 6(c).

      (c) Liquidation/Application of Posted Credit Support. All reasonable costs
and expenses incurred by or on behalf of the Secured Party or the Pledgor in
connection with the liquidation and/or application of any Posted Credit Support
under Paragraph 8 will be payable, on demand and pursuant to the Expenses
Section of this Agreement, by the Defaulting Party or, if there is no Defaulting
Party, equally by the parties.

Paragraph 11. Miscellaneous

      (a) Default Interest. A Secured Party that fails to make, when due, any
Transfer of Posted Collateral or the Interest Amount will be obligated to pay
the Pledgor (to the extent permitted under applicable law) an amount equal to
interest at the Default Rate multiplied by the Value of the items of property
that were required to be Transferred, from (and including) the date that Posted
Collateral or Interest Amount was required to be Transferred to (but excluding)
the date of Transfer of that Posted Collateral or Interest Amount. This interest
will be calculated on the basis of daily compounding and the actual number of
days elapsed.

      (b) Further Assurances. Promptly following a demand made by a party, the
other party will execute, deliver, file and record any financing statement,
specific assignment or other document and take any other action that may be
necessary or desirable and reasonably requested by that party to create,
preserve, perfect or validate any security interest or lien granted under
Paragraph 2, to enable that party to exercise or enforce its rights under this
Annex with respect to Posted Credit Support or an Interest Amount or to effect
or document a release of a security interest on Posted Collateral or an Interest
Amount.

      (c) Further Protection. The Pledgor will promptly give notice to the
Secured Party of, and defend against, any suit, action, proceeding or lien that
involves Posted Credit Support Transferred by the Pledgor or that could
adversely affect the security interest and lien granted by it under Paragraph 2,
unless that suit, action, proceeding or lien results from the exercise of the
Secured Party's rights under Paragraph 6(c).

      (d) Good Faith and Commercially Reasonable Manner. Performance of all
obligations under this Annex, including, but not limited to, all calculations,
valuations and determinations made by either party, will be made in good faith
and in a commercially reasonable manner.

      (e) Demands and Notices. All demands and notices made by a party under
this Annex will be made as specified in the Notices Section of this Agreement,
except as otherwise provided in Paragraph 13.

      (f) Specifications of Certain Matters. Anything referred to in this Annex
as being specified in Paragraph 13 also may be specified in one or more
Confirmations or other documents and this Annex will be construed accordingly.

Paragraph 12. Definitions

As used in this Annex:--

"Cash" means the lawful currency of the United States of America.

"Credit Support Amount" has the meaning specified in Paragraph 3.

"Custodian" has the meaning specified in Paragraphs 6(b)(i) and 13.

"Delivery Amount" has the meaning specified in Paragraph 3(a).

"Disputing Party" has the meaning specified in Paragraph 5.

"Distributions" means with respect to Posted Collateral other than Cash, all
principal, interest and other payments and distributions of cash or other
property with respect thereto, regardless of whether the Secured Party has
disposed of that Posted Collateral under Paragraph 6(c). Distributions will not
include any item of property acquired by the Secured Party upon any disposition
or liquidation of Posted Collateral or, with respect to any Posted Collateral in
the form of Cash, any distributions on that collateral, unless otherwise
specified herein.

"Eligible Collateral" means, with respect to a party, the items, if any,
specified as such for that party in Paragraph 13.

"Eligible Credit Support" means Eligible Collateral and Other Eligible Support.

"Exposure" means for any Valuation Date or other date for which Exposure is
calculated and subject to Paragraph 5 in the case of a dispute, the amount, if
any, that would be payable to a party that is the Secured Party by the other
party (expressed as a positive number) or by a party that is the Secured Party
to the other party (expressed as a negative number) pursuant to Section
6(e)(ii)(2)(A) of this Agreement as if all Transactions (or Swap Transactions)
were being terminated as of the relevant Valuation Time; provided that Market
Quotation will be determined by the Valuation Agent using its estimates at
mid-market of the amounts that would be paid for Replacement Transactions (as
that term is defined in the definition of "Market Quotation").

"Independent Amount" means, with respect to a party, the amount specified as
such for that party in Paragraph 13; if no amount is specified, zero.

"Interest Amount" means, with respect to an Interest Period, the aggregate sum
of the amounts of interest calculated for each day in that Interest Period on
the principal amount of Posted Collateral in the form of Cash held by the
Secured Party on that day, determined by the Secured Party for each such day as
follows:

      (x) the amount of that Cash on that day; multiplied by
      (y) the Interest Rate in effect for that day; divided by
      (z) 360.

"Interest Period" means the period from (and including) the last Local Business
Day on which an Interest Amount was Transferred (or, if no Interest Amount has
yet been Transferred, the Local Business Day on which Posted Collateral in the
form of Cash was Transferred to or received by the Secured Party) to (but
excluding) the Local Business Day on which the current Interest Amount is to be
Transferred.

"Interest Rate" means the rate specified in Paragraph 13.

"Local Business Day", unless otherwise specified in Paragraph 13, has the
meaning specified in the Definitions Section of this Agreement, except that
references to a payment in clause (b) thereof will be deemed to include a
Transfer under this Annex.

"Minimum Transfer Amount" means, with respect to a party, the amount specified
as such for that party in Paragraph 13; if no amount is specified, zero.

"Notification Time" has the meaning specified in Paragraph 13.

"Obligations" means, with respect to a party, all present and future obligations
of that party under this Agreement and any additional obligations specified for
that party in Paragraph 13.

"Other Eligible Support" means, with respect to a party, the items, if any,
specified as such for that party in Paragraph 13. "Other Posted Support" means
all Other Eligible Support Transferred to the Secured Party that remains in
effect for the benefit of that Secured Party.

"Pledgor" means either party, when that party (i) receives a demand for or is
required to Transfer Eligible Credit Support under Paragraph 3(a) or (ii) has
Transferred Eligible Credit Support under Paragraph 3(a).

"Posted Collateral" means all Eligible Collateral, other property,
Distributions, and all proceeds thereof that have been Transferred to or
received by the Secured Party under this Annex and not Transferred to the
Pledgor pursuant to Paragraph 3(b), 4(d)(ii) or 6(d)(i) or released by the
Secured Party under Paragraph 8. Any Interest Amount or portion thereof not
Transferred pursuant to Paragraph 6(d)(ii) will constitute Posted Collateral in
the form of Cash.

"Posted Credit Support" means Posted Collateral and Other Posted Support.

"Recalculation Date" means the Valuation Date that gives rise to the dispute
under Paragraph 5; provided, however, that if a subsequent Valuation Date occurs
under Paragraph 3 prior to the resolution of the dispute, then the
"Recalculation Date" means the most recent Valuation Date under Paragraph 3.

"Resolution Time" has the meaning specified in Paragraph 13.

"Return Amount" has the meaning specified in Paragraph 3(b).

"Secured Party" means either party, when that party (i) makes a demand for or is
entitled to receive Eligible Credit Support under Paragraph 3(a) or (ii) holds
or is deemed to hold Posted Credit Support.

"Specified Condition" means, with respect to a party, any event specified as
such for that party in Paragraph 13.

"Substitute Credit Support" has the meaning specified in Paragraph 4(d)(i).

"Substitution Date" has the meaning specified in Paragraph 4(d)(ii).

"Threshold" means, with respect to a party, the amount specified as such for
that party in Paragraph 13; if no amount is specified, zero.

"Transfer" means, with respect to any Eligible Credit Support, Posted Credit
Support or Interest Amount, and in accordance with the instructions of the
Secured Party, Pledgor or Custodian, as applicable:

      (i)   in the case of Cash, payment or delivery by wire transfer into one
            or more bank accounts specified by the recipient;

      (ii)  in the case of certificated securities that cannot be paid or
            delivered by book-entry, payment or delivery in appropriate physical
            form to the recipient or its account accompanied by any duly
            executed instruments of transfer, assignments in blank, transfer tax
            stamps and any other documents necessary to constitute a legally
            valid transfer to the recipient;

      (iii) in the case of securities that can be paid or delivered by
            book-entry, the giving of written instructions to the relevant
            depository institution or other entity specified by the recipient,
            together with a written copy thereof to the recipient, sufficient if
            complied with to result in a legally effective transfer of the
            relevant interest to the recipient; and

      (iv)  in the case of Other Eligible Support or Other Posted Support, as
            specified in Paragraph 13.

"Valuation Agent" has the meaning specified in Paragraph 13.

"Valuation Date" means each date specified in or otherwise determined pursuant
to Paragraph 13.

"Valuation Percentage" means, for any item of Eligible Collateral, the
percentage specified in Paragraph 13.

"Valuation Time" has the meaning specified in Paragraph 13.

"Value" means for any Valuation Date or other date for which Value is calculated
and subject to Paragraph 5

in the case of a dispute, with respect to:

      (i)   Eligible Collateral or Posted Collateral that is:

            (A)   Cash, the amount thereof; and

            (B)   a security, the bid price obtained by the Valuation Agent
                  multiplied by the applicable Valuation Percentage, if any;

      (ii)  Posted Collateral that consists of items that are not specified as
            Eligible Collateral, zero; and

      (iii) Other Eligible Support and Other Posted Support, as specified in
            Paragraph 13.

                             Elections and Variables
                        to the ISDA Credit Support Annex
                            dated as of 16 March 2007
                                     between

   Credit Suisse International     and     WELLS FARGO BANK, N.A., not in its
                                          individual or corporate capacity but
                                         solely as Trustee on behalf of CREDIT
                                        SUISSE COMMERCIAL MORTGAGE TRUST 2007-C1
---------------------------------       ----------------------------------------
            ("Party A")                                  ("Party B")

Paragraph 13.

(a)   Security Interest for "Obligations".

      The term "Obligations" as used in this Annex includes the following
additional obligations:

      With respect to Party A:      None.

      With respect to Party B:      None.

(b)   Credit Support Obligations.

      (i)   Delivery Amount, Return Amount and Credit Support Amount.

            (A)   "Delivery Amount" has the meaning specified in Paragraph 3(a),
                  except that the words "upon a demand made by the Secured
                  Party" shall be deleted and the word "that" on the second line
                  of Paragraph 3(a) shall be replaced with the word "a".
                  Paragraph 4(b) is hereby amended by the insertion of the words
                  "(i) in respect of a Transfer pursuant to Paragraph 3(b),"
                  immediately prior to the words "if a demand for" and the
                  insertion of the words "; and (ii) in respect of a Transfer
                  pursuant to Paragraph 3(a), the relevant Transfer will be made
                  not later than the close of business on the Local Business Day
                  following the Valuation Date" immediately prior to the period.

            (B)   "Return Amount" has the meaning specified in Paragraph 3(b).

            (C)   "Credit Support Amount" for a Valuation Date shall mean zero;
                  provided that, if the Threshold in respect of Party A is zero
                  on such Valuation Date, "Credit Support Amount" shall mean one
                  of the following if one of the following specified events have
                  occurred on such Valuation Date:

                  (i)   if a Moody's Collateralization Event has occurred and is
                        continuing but (a) no Moody's Rating Event has occurred
                        and is continuing or (b) less than 30 Local Business Day
                        have elapsed since the last time that no Moody's Rating
                        Event had occurred and was continuing, "Credit Support
                        Amount" shall mean an amount in USD equal to the greater
                        of (1) the sum of (a) the Secured Party's Exposure and
                        (b) the First Trigger Collateral Amount (as defined
                        below) for each Transaction hereunder and (2) zero;

                  (ii)  so long as a Moody's Ratings Event has occurred and is
                        continuing and 30 or more Local Business Days have
                        elapsed since the last time that no Moody's Rating Event
                        had occurred and was continuing, "Credit Support Amount"
                        shall mean an amount in USD equal to the greatest of (1)
                        the sum of (a) the Secured Party's Exposure and (b) the
                        Second Trigger Collateral Amount (as defined below) for
                        each Transaction hereunder, (2) an amount equal to the
                        Floating Amount payable by Party A pursuant to each
                        Transaction hereunder in respect of the first Floating
                        Rate Payer Payment Date scheduled to occur on or after
                        such Valuation Date and (3) zero; and

                  (iii) if an S&P Collateralization Event or an S&P Ratings
                        Event has occurred and is continuing, "Credit Support
                        Amount" shall mean an amount in USD equal to the greater
                        of (1) the sum of (a) the Secured Party's Exposure and
                        (b) the Notional Volatility Buffer and (2) zero.
                        "Notional Volatility Buffer", as determined by the
                        Valuation Agent for any date, means the product of (i)
                        the Notional Amount of the Transaction on such date,
                        (ii) the Payment Factor, and (iii) the Volatility Buffer
                        Percentage for such date as set out in the table below
                        on such date,

------------------- --------------- ---------------- ------------- -------------
Party A S&P         Remaining       Remaining        Remaining     Remaining
Rating on such      Weighted        Weighted         Weighted      Weighted
date                Average Life    Average Life     Average       Average Life
                    Maturity up     Maturity up to   Life          Maturity up
                    to 3 years      5 years          Maturity up   to 30 years
                                                     to 10 years
------------------- --------------- ---------------- ------------- -------------
S&P S-T Rating of   0.00%           0.00%            0.00%         0.00%
"A-1" or above
------------------- --------------- ---------------- ------------- -------------
S&P S-T Rating of   2.75%           3.25%            4.0%          4.75%
"A-2"
------------------- --------------- ---------------- ------------- -------------
S&P S-T Rating of   3.25%           4.00%            5.0%          6.25%
"A-3"
------------------- --------------- ---------------- ------------- -------------
S&P L-T Rating of   3.50%           4.50%            6.75%         7.50%
"BB+" or lower
------------------- --------------- ---------------- ------------- -------------

                        L-T Rating means with respect to any Person, the
                        unsecured, unguaranteed and otherwise unsupported
                        long-term senior debt obligations of such Person.

                        S-T Rating means with respect to any Person, the
                        unsecured, unguaranteed and otherwise unsupported
                        short-term debt obligations of such Person.

                        Payment Factor means 1.

            In circumstances where more than one of Paragraph 13(b)(i)(C)(i),
            (ii) and (iii) apply, the Credit Support Amount shall be calculated
            by reference to the paragraph which would result in Party A
            Transferring the greatest amount of Eligible Credit Support. Under
            no circumstances will Party A be required to Transfer more Eligible
            Credit Support than the greatest amount calculated in accordance
            with one of Paragraph 13(b)(i)(C)(i), (ii) or (iii).

            First Trigger Collateral Amount means, in respect of each
            Transaction hereunder on any date, an amount in USD equal to the
            Notional Amount of such Transaction on such date multiplied by the
            Applicable Percentage set forth in the table in Exhibit A hereto.

            Second Trigger Collateral Amount means, in respect of each
            Transaction hereunder on any date, an amount in USD equal to the
            Notional Amount of such Transaction on such date multiplied by the
            Applicable Percentage set forth in the applicable table in Exhibit B
            hereto.

      (ii)  Eligible Collateral. On any date, the following items will qualify
            as "Eligible Collateral" for Party A:

            (A)   Valuation Percentage S&P

                  (i)   Cash                                                100%

                  (ii)  Negotiable debt obligations issued                 98.0%
                        after 18 July 1984 by the U.S. Treasury
                        Department having a residual maturity on
                        such date of less than 1 year

                  (iii) Coupon-bearing negotiable debt                     93.8%
                        obligations issued after 18 July 1984 by
                        the U.S. Treasury Department having a
                        residual maturity on such date equal to or
                        greater than 1 year but less than 5 years

                  (iv)  Coupon-bearing negotiable debt                     90.3%
                        obligations issued after 18 July 1984 by the
                        U.S. Treasury Department having a residual
                        maturity on such date equal to or greater
                        than 5 years but less than 10 years

            (B)   Valuation Percentage Moody's

-------------------- -------------------------------- --------------------------
   INTRUMENT                     Daily                           Daily
-------------------- -------------------------------- --------------------------
 U.S. Dollar Cash                 100%                            100%
-------------------- -------------------------------- --------------------------
 Fixed-Rate Negotiable treasury Debt Issued by the U.S. Treasury Department with
                                Remaining Maturity
      <1 Year                     100%                            100%
   1 to 2 years                   100%                            99%
   2 to 3 years                   100%                            98%
   3 to 5 years                   100%                            97%
   5 to 7 years                   100%                            95%
   7 to 10 years                  100%                            94%
  Floating-Rate Negotiable treasury Debt Issued by the U.S. Treasury Department
  All Maturities                  100%                            99%
-------------------- -------------------------------- --------------------------

            In circumstances where both Paragraph 13(b)(ii)(A) and (B) apply,
            the Valuation Percentage for an item of Eligible Collateral shall be
            calculated by reference to the paragraph which would result in the
            lower Valuation Percentage for such item of Eligible Collateral.

      (iii) Other Eligible Support. None.

      (iv)  Thresholds.

            (A)   "Independent Amount" means with respect to Party A: Not
                  applicable.

                  "Independent Amount" means with respect to Party B: Not
                  applicable.

            (B)   "Threshold" means:

                  With respect to Party A: infinity, provided that if a
                  Collateralization Event has occurred and is continuing, the
                  Threshold with respect to Party A shall be zero, unless (i)
                  Party A has remedied such Collateralization Event in
                  accordance with the terms of the Agreement by means other than
                  posting collateral pursuant to this Annex and a Ratings Event
                  has not occurred and is not continuing or (ii) (a) no S&P
                  Collateralization Event has occurred and is continuing and (b)
                  (A) if a Moody's Collateralization Event has occurred and is
                  continuing, no more than 30 Local Business Days have elapsed
                  since the last time a Moody's Collateralization Event has
                  occurred and was continuing and (B) no Moody's
                  Collateralization Event had occurred and was continuing when
                  this Annex was executed, in which case the Threshold with
                  respect to Party A shall remain infinity; and.

                  With respect to Party A: infinity, provided that if a
                  Collateralization Event has occurred and is continuing, the
                  Threshold with respect to Party A shall be zero, or (ii)(a)
                  neither a S&P Collateralization Event has occurred and is
                  continuing and

                  With respect to Party B, infinity.

            (C)   "Minimum Transfer Amount means USD 100,000 with respect to
                  Party A and Party B; provided, however, that if the aggregate
                  Certificate Principal Balance of the Class A-MFL Certificates
                  rated by S&P ceases to be more than USD 50,000,000, the
                  "Minimum Transfer Amount" shall be USD 50,000.

            (D)   Rounding. The Delivery Amount will be rounded up to the
                  nearest integral multiple of $10,000. The Return Amount will
                  be rounded down to the nearest integral multiple of $1,000.

(c)   Valuation and Timing.

      (i)   "Valuation Agent" means Party A. Calculations by Party A will be
            made by reference to commonly accepted market sources.

      (ii)  "Valuation Date" means,

            (A)   in the event that a Collateralization Event other an S&P
                  Collateralization Event has occurred and is continuing, each
                  Local Business Day which, if treated as a Valuation Date,
                  would result in a Delivery Amount or a Return Amount; and

            (B)   in the event that only an S&P Collateralization Event has
                  occurred and is continuing, or a Ratings Event has occurred,
                  the last Local Business Day of each calendar week.

      (iii) "Valuation Time" means the close of business in the city of the
            Valuation Agent on the Local Business Day before the Valuation Date
            or date of calculation, as applicable, provided that the
            calculations of Value and Exposure will be made as of approximately
            the same time on the same date.

      (iv)        "Notification Time" means 4:00 p.m., London time, on a Local
                  Business Day.

(d)   Conditions Precedent and Secured Party's Rights and Remedies.

      No events shall constitute a "Specified Condition."

(e)   Substitution.

      (i)   "Substitution Date" has the meaning specified in Paragraph 4(d)(ii).

      (ii)  Consent. The Pledgor must obtain the Secured Party's prior consent
            to any substitution pursuant to Paragraph 4(d) and shall give to the
            Secured Party not less than two (2) Local Business Days' notice
            thereof specifying the items of Posted Credit Support intended for
            substitution.

(f)   Dispute Resolution.

      (i)   "Resolution Time" means 4:00 p.m. London time on the Local Business
            Day following the date on which the notice of the dispute is given
            under Paragraph 5.

      (ii)  Value. For the purpose of Paragraphs 5(i)(C) and 5(ii), on any date,
            the Value of Eligible Collateral and Posted Collateral will be
            calculated as follows:

            (A)   with respect to any Cash; the amount thereof; and

            (B)   with respect to any Eligible Collateral comprising securities;
                  the sum of (a)(x) the last mid-market price on such date for
                  such securities on the principal national securities exchange
                  on which such securities are listed, multiplied by the
                  applicable Valuation Percentage or (y) where any such
                  securities are not listed on a national securities exchange,
                  the mid-market price for such securities quoted as at the
                  close of business on such date by any principal market maker
                  for such securities chosen by the Valuation Agent, multiplied
                  by the applicable Valuation Percentage or (z) if no such bid
                  price is listed or quoted for such date, the last bid price
                  listed or quoted (as the case may be), as of the day next
                  preceding such date on which such prices were available;
                  multiplied by the applicable Valuation Percentage; plus (b)
                  the accrued interest on such securities (except to the extent
                  that such interest shall have been paid to the Pledgor
                  pursuant to Paragraph 6(d)(ii) or included in the applicable
                  price referred to in subparagraph (a) above) as of such date.

      (iii) Alternative. The provisions of Paragraph 5 will apply provided the
            obligation of the appropriate party to deliver the undisputed amount
            to the other party will not arise prior to the time that would
            otherwise have applied to the Transfer pursuant to, or deemed made,
            under Paragraph 3 if no dispute had arisen.

(g)   Holding and Using Posted Collateral.

      (i)   Eligibility to Hold Posted Collateral; Custodians:

            The Trustee (as defined in the PSA) will be entitled to hold Posted
            Collateral pursuant to Paragraph 6(b).

      (ii)  Use of Posted Collateral. The provisions of Paragraph 6(c) will not
            apply to Party B. Therefore, Party B will not have any of the rights
            specified in Paragraph 6(c)(i) or 6(c)(ii).

(h)   Distributions and Interest Amount.

      (i)   Interest Rate. The "Interest Rate" will be the annualized rate of
            return actually achieved on Posted Collateral in the form of Cash
            during the relevant Interest Period.

      (ii)  Transfer of Interest Amount. The Transfer of the Interest Amount
            will be made on any Local Business Day on which Posted Collateral in
            the form of Cash is Transferred to the Pledgor pursuant to Paragraph
            3(b), provided that such Interest Amount has been received prior
            thereto.

      (iii) Alternative to Interest Amount. The provisions of Paragraph 6(d)(ii)
            will apply.

(i)   Additional Representation(s).

      There are no additional representations by either party.

(j)   Demands and Notices.

      All demands, specifications and notices under this Annex will be made
      pursuant to the Notices Section of this Agreement, save that any demand,
      specification or notice:

      (i)   shall be given to or made at the following addresses:

      If to Party A:

            Address:    One Cabot Square
                        London E14 4QJ
                        England

            Telephone:  +44 20 7888 3083
            Facsimile:  +44 20 7883 7987
            Attention:  Collateral Management Unit

      If to Party B:

            As set forth in Part 4(a) of the Schedule;

      or at such other address as the relevant party may from time to time
      designate by giving notice (in accordance with the terms of this
      paragraph) to the other party;

      (ii)  shall (unless otherwise stated in this Annex) be deemed to be
            effective at the time such notice is actually received unless such
            notice is received on a day which is not a Local Business Day or
            after the Notification Time on any Local Business Day in which event
            such notice shall be deemed to be effective on the next succeeding
            Local Business Day.

(k)   Address for Transfers.

      Party A: To be notified to Party B by Party A at the time of the request
      for the Transfer.

      Party B:    Wire transfers:
                  --------------

                  As set forth in Part 4 of the Confirmation

                  Book-entry transfers:
                  --------------------
                  Fed: WF SF/TRUST
                  ABA# 121000248
                  Wells Fargo A/C # 50992900
                  Account name: CSMC 2007-C1

                  DTC: Participant # 2027
                  Wells Fargo A/C # 50992900
                  Account name: CSMC 2007-C1

(l)   Other Provisions.

      (i)   Additional Definitions

            As used in this Annex:

            "Equivalent Collateral" means, with respect to any security
            constituting Posted Collateral, a security of the same issuer and,
            as applicable, representing or having the same class, series,
            maturity, interest rate, principal amount or liquidation value and
            such other provisions as are necessary for that security and the
            security constituting Posted Collateral to be treated as equivalent
            in the market for such securities;

            "Local Business Day" means: (i) any day on which commercial banks
            are open for business (including dealings in foreign exchange and
            foreign currency deposits) in London, and (ii) in relation to a
            Transfer of Eligible Collateral, a day on which the clearance system
            agreed between the parties for the delivery of Eligible Collateral
            is open for acceptance and execution of settlement instructions (or
            in the case of a Transfer of Cash or other Eligible Collateral for
            which delivery is contemplated by other means, a day on which
            commercial banks are open for business (including dealings for
            foreign exchange and foreign currency deposits) in New York and such
            other places as the parties shall agree); and

            "transaction-specific hedges" has the meaning given to such term in
            "Framework for De-linking Hedge Counterparty Risks from Global
            Structured Finance Cashflow Transactions Moody's Methodology"
            published by Moody's Investors Service and dated May 25, 2006.

      (ii)  Events of Default

            Paragraph 7 shall be deleted and replaced in its entirety by the
            following paragraph:

            "For the purposes of Section 5(a)(iii)(i) of this Agreement, an
            Event of Default will exist with respect to a party if that party
            fails (or fails to cause its Custodian) to make, when due, any
            Transfer of Posted Credit Support or the Interest Amount, as
            applicable, required to be made by it and that failure continues for
            two Local Business Days after the notice of that failure is given to
            that party, except that (A) if such failure would constitute an
            Additional Termination Event under another provision of this
            Agreement and (B) no more than 30 Local Business Days have elapsed
            since the last time that no Moody's Rating Event has occurred and
            was continuing, then such failure shall be an Additional Termination
            Event and not an Event of Default".

      (iii) Return of Fungible Securities

            In lieu of returning to the Pledgor pursuant to Paragraphs 3(b),
            4(d), 5 and 8(d) any Posted Collateral comprising securities the
            Secured Party may return Equivalent Collateral.

      (iv)  Covenants of the Pledgor

            So long as the Agreement is in effect, the Pledgor covenants that it
            will keep the Posted Collateral free from all security interests or
            other encumbrances created by the Pledgor, except the security
            interest created hereunder and any security interests or other
            encumbrances created by the Secured Party; and will not sell,
            transfer, assign, deliver or otherwise dispose of, or grant any
            option with respect to any Posted Collateral or any interest
            therein, or create, incur or permit to exist any pledge, lien,
            mortgage, hypothecation, security interest, charge, option or any
            other encumbrance with respect to any Posted Collateral or any
            interest therein, without the prior written consent of the Secured
            Party.

      (v)   No Counterclaim

            A party's rights to demand and receive the Transfer of Eligible
            Collateral as provided hereunder and its rights as Secured Party
            against the Posted Collateral or otherwise shall be absolute and
            subject to no counterclaim, set-off, deduction or defense in favor
            of the Pledgor except as contemplated in Sections 2 and 6 of the
            Agreement and Paragraph 8 of this Annex.

      (vi)  Holding Collateral

            The Secured Party shall cause any Custodian appointed hereunder to
            open and maintain a segregated account (which shall be an Eligible
            Account, as defined in the PSA) and to hold, record and identify all
            the Posted Collateral in such segregated account and, subject to
            Paragraph 8(a), such Posted Collateral shall at all times be and
            remain the property of the Pledgor and shall at no time constitute
            the property of, or be commingled with the property of, the Secured
            Party or the Custodian.

      (vii) Security and Performance

            Eligible Collateral Transferred to the Secured Party constitutes
            security and performance assurance without which the Secured Party
            would not otherwise enter into and continue any and all
            Transactions.

      (viii) Agreement as to Single Secured Party and Pledgor

            Party A and Party B agree that, notwithstanding anything to the
            contrary in the recital to this Annex, Paragraph 1(b), Paragraph 2
            or the definitions in Paragraph 12, (a) the term "Secured Party" as
            used in this Annex means only Party B, (b) the term "Pledgor" as
            used in this Annex means only Party A, (c) only Party A makes the
            pledge and grant in Paragraph 2, the acknowledgment in the final
            sentence of Paragraph 8(a) and the representations in Paragraph 9
            and (d) only Party A will be required to make Transfers of Eligible
            Credit Support hereunder.

      (ix)  External Verification of Mark-to-Market Valuations.

            On each Valuation Date occurring while an S&P Collateralization
            Event is continuing, Party A shall provide to S&P not later than the
            Notification Time on the Local Business Day following such Valuation
            Date its calculations of Exposure and the S&P Value of any Eligible
            Credit Support or Posted Credit Support for that Valuation Date.
            Every month after the unsecured, unguaranteed and otherwise
            unsupported long-term debt obligations of each Relevant Entity are
            rated below BBB+ by S&P, unless otherwise agreed in writing with
            S&P, Party A will verify its determination of Exposure of the
            Transaction and any Posted Credit Support on the next Valuation Date
            by seeking quotations from two (2) Reference Market-makers for their
            determination of Exposure of the Transaction on such Valuation Date
            and the Valuation Agent will use the greater of either (a) its own
            determination or (b) the highest quotation for a Reference
            Market-maker, if applicable, for the next Valuation Date; provided,
            that this Paragraph 13(l)(ix) shall only apply to the extent that
            the Certificates outstanding at such time (as defined in the PSA)
            are rated higher by S&P than the S&P L-T Rating of Party A; and
            provided further, that Party A shall not seek verification of its
            determination of Exposure as described above from the same Reference
            Market-maker more than four times in any twelve-month period. Party
            A shall provide to S&P copies of such verification details.

      (x)   Expenses.

            Notwithstanding Paragraph 10(a), the Pledgor will be responsible
            for, and will reimburse the Secured Party for, all transfer costs
            involved in the Transfer of Eligible Collateral from the Pledgor to
            the Secured Party (or any agent or custodian for safekeeping of the
            Secured Party) or from the Secured Party (or any agent or custodian
            for safekeeping of the Secured Party ) to the Pledgor pursuant to
            paragraph 4(d).

      (xi)  Trustee Capacity.

            It is expressly understood and agreed by the parties hereto that (i)
            this Annex is executed and delivered by Wells Fargo Bank, N.A. (the
            Trustee) not individually or personally but solely as trustee of the
            trust created pursuant to the PSA (the Trust), in the exercise of
            the powers and authority conferred and vested in it under the PSA,
            (ii) each of the representations, undertakings and agreements herein
            made on the part of Party B is made and intended not as personal
            representations, undertakings and agreements by the Trustee but is
            made and intended for the purpose of binding only the Trust, (iii)
            nothing herein contained shall be construed as creating any
            liability on the part of the Trustee, individually or personally, to
            perform any covenant either expressed or implied contained herein,
            all such liability, if any, being expressly waived by the parties
            hereto and by any Person claiming by, through or under the parties
            hereto and (iv) under no circumstances shall the Trustee be
            personally liable for the payment of any indebtedness or expenses of
            Party B or be liable for the breach or failure of any obligation,
            representation, warranty or covenant made or undertaken by Party B
            under this Annex or any other related documents as to all of which
            recourse shall be had solely to the assets of the Trust in
            accordance with the terms of the PSA and the Agreement.
<PAGE>

Credit Suisse International           WELLS FARGO BANK, N.A., not in its
                                      individual or corporate capacity but
                                      solely as Trustee on behalf of CREDIT
                                      SUISSE COMMERCIAL MORTGAGE TRUST 2007-C1

By: /s/ Marlene Nobile                By:  /s/ Amy Mofsenson
   ----------------------------          --------------------------------
Name: Marlene Nobile                  Name: Amy Mofsenson
Title: Authorized Signatory           Title: Vice President

By: /s/ Steven J. Reis
   ----------------------------
Name: Steven J. Reis
Title: Authorized Signatory
<PAGE>

                                                            CSMC 2007-C1 CSA

                                    EXHIBIT A

             FIRST TRIGGER COLLATERAL AMOUNT APPLICABLE PERCENTAGES

      For Transactions that are swaps, caps, floors and transaction-specific
hedges:

<TABLE>
<CAPTION>
                                       Interest Rate Hedges                             Currency Hedges
 Weighted Average Life                                         Valuation Dates:
   of Hedge in Years              Daily                  Weekly                  Daily                 Weekly
-----------------------------------------------------------------------------------------------------------------
<S>                               <C>                    <C>                     <C>                    <C>
Less than 1 year                  0.15%                  0.25%                   1.10%                  2.20%
Equal to or greater               0.30%                  0.50%                   1.20%                  2.40%
than 1 year but less
than 2 years
Equal to or greater               0.40%                  0.70%                   1.30%                  2.60%
than 2 years but less
than 3 years
Equal to or greater               0.60%                  1.00%                   1.40%                  2.80%
than 3 years but less
than 4 years
Equal to or greater               0.70%                  1.20%                   1.50%                  2.90%
than 4 years but less
than 5 years
Equal to or greater               0.80%                  1.40%                   1.60%                  3.10%
than 5 years but less
than 6 years
Equal to or greater               1.00%                  1.60%                   1.60%                  3.30%
than 6 years but less
than 7 years
Equal to or greater               1.10%                  1.80%                   1.70%                  3.40%
than 7 years but less
than 8 years
Equal to or greater               1.20%                  2.00%                   1.80%                  3.60%
than 8 years but less
than 9 years
Equal to or greater               1.30%                  2.20%                   1.90%                  3.80%
than 9 years but less
than 10 years
Equal to or greater               1.40%                  2.30%                   1.90%                  3.90%
than 10 years but less
than 11 years
Equal to or greater               1.50%                  2.50%                   2.00%                  4.00%
than 11 years but less
than 12 years
Equal to or greater               1.60%                  2.70%                   2.10%                  4.10%
than 12 years but less
than 13 years
Equal to or greater               1.70%                  2.80%                   2.10%                  4.30%
than 13 years but less
than 14 years
Equal to or greater               1.80%                  3.00%                   2.20%                  4.40%
than 14 years but less
than 15 years
Equal to or greater               1.90%                  3.20%                   2.30%                  4.50%
than 15 years but less
than 16 years
Equal to or greater               2.00%                  3.30%                   2.30%                  4.60%
than 16 years but less
than 17 years
Equal to or greater               2.00%                  3.50%                   2.40%                  4.80%
than 17 years but less
than 18 years
Equal to or greater               2.00%                  3.60%                   2.40%                  4.90%
than 18 years but less
than 19 years
Equal to or greater               2.00%                  3.70%                   2.50%                  5.00%
than 19 years but less
than 20 years
Equal to or greater               2.00%                  3.90%                   2.50%                  5.00%
than 20 years but less
than 21 years
Equal to or greater               2.00%                  4.00%                   2.50%                  5.00%
than 21 years but less
than 22 years
Equal to or greater               2.00%                  4.00%                   2.50%                  5.00%
than 22 years but less
than 23 years
Equal to or greater               2.00%                  4.00%                   2.50%                  5.00%
than 23 years but less
than 24 years
Equal to or greater               2.00%                  4.00%                   2.50%                  5.00%
than 24 years but less
than 25 years
Equal to or greater               2.00%                  4.00%                   2.50%                  5.00%
than 25 years but less
than 26 years
Equal to or greater               2.00%                  4.00%                   2.50%                  5.00%
than 26 years but less
than 27 years
Equal to or greater               2.00%                  4.00%                   2.50%                  5.00%
than 27 years but less
than 28 years
Equal to or greater               2.00%                  4.00%                   2.50%                  5.00%
than 28 years but less
than 29 years
Equal to or greater               2.00%                  4.00%                   2.50%                  5.00%
than 29 years but less
than 30 years
Equal to 30 years                 2.00%                  4.00%                   2.50%                  5.00%
</TABLE>

                                    EXHIBIT B

             SECOND TRIGGER COLLATERAL AMOUNT APPLICABLE PERCENTAGES

         For Transactions that are swaps (excludes caps, floors and transaction-
specific hedges):

<TABLE>
<CAPTION>
                                       Interest Rate Swaps                              Currency Swaps
 Weighted Average Life                                         Valuation Dates:
   of Hedge in Years              Daily                  Weekly                  Daily                 Weekly
-----------------------------------------------------------------------------------------------------------------
<S>                               <C>                    <C>                     <C>                    <C>
Less than 1 year                  0.50%                  0.60%                   6.10%                  7.25%
Equal to or greater               1.00%                  1.20%                   6.30%                  7.50%
than 1 year but less
than 2 years
Equal to or greater               1.50%                  1.70%                   6.40%                  7.70%
than 2 years but less
than 3 years
Equal to or greater               1.90%                  2.30%                   6.60%                  8.00%
than 3 years but less
than 4 years
Equal to or greater               2.40%                  2.80%                   6.70%                  8.20%
than 4 years but less
than 5 years
Equal to or greater               2.80%                  3.30%                   6.80%                  8.40%
than 5 years but less
than 6 years
Equal to or greater               3.20%                  3.80%                   7.00%                  8.60%
than 6 years but less
than 7 years
Equal to or greater               3.60%                  4.30%                   7.10%                  8.80%
than 7 years but less
than 8 years
Equal to or greater               4.00%                  4.80%                   7.20%                  9.00%
than 8 years but less
than 9 years
Equal to or greater               4.40%                  5.30%                   7.30%                  9.20%
than 9 years but less
than 10 years
Equal to or greater               4.70%                  5.60%                   7.40%                  9.30%
than 10 years but less
than 11 years
Equal to or greater               5.00%                  6.00%                   7.50%                  9.50%
than 11 years but less
than 12 years
Equal to or greater               5.40%                  6.40%                   7.60%                  9.70%
than 12 years but less
than 13 years
Equal to or greater               5.70%                  6.80%                   7.70%                  9.80%
than 13 years but less
than 14 years
Equal to or greater               6.00%                  7.20%                   7.80%                 10.00%
than 14 years but less
than 15 years
Equal to or greater               6.30%                  7.60%                   7.90%                 10.00%
than 15 years but less
than 16 years
Equal to or greater               6.60%                  7.90%                   8.00%                 10.00%
than 16 years but less
than 17 years
Equal to or greater               6.90%                  8.30%                   8.10%                 10.00%
than 17 years but less
than 18 years
Equal to or greater               7.20%                  8.60%                   8.20%                 10.00%
than 18 years but less
than 19 years
Equal to or greater               7.50%                  9.00%                   8.20%                 10.00%
than 19 years but less
than 20 years
Equal to or greater               7.80%                  9.00%                   8.30%                 10.00%
than 20 years but less
than 21 years
Equal to or greater               8.00%                  9.00%                   8.40%                 10.00%
than 21 years but less
than 22 years
Equal to or greater               8.00%                  9.00%                   8.50%                 10.00%
than 22 years but less
than 23 years
Equal to or greater               8.00%                  9.00%                   8.60%                 10.00%
than 23 years but less
than 24 years
Equal to or greater               8.00%                  9.00%                   8.60%                 10.00%
than 24 years but less
than 25 years
Equal to or greater               8.00%                  9.00%                   8.70%                 10.00%
than 25 years but less
than 26 years
Equal to or greater               8.00%                  9.00%                   8.80%                 10.00%
than 26 years but less
than 27 years
Equal to or greater               8.00%                  9.00%                   8.80%                 10.00%
than 27 years but less
than 28 years
Equal to or greater               8.00%                  9.00%                   8.90%                 10.00%
than 28 years but less
than 29 years
Equal to or greater               8.00%                  9.00%                   8.90%                 10.00%
than 29 years but less
than 30 years
Equal to 30 years                 8.00%                  9.00%                   9.00%                 10.00%
</TABLE>

         For Transactions that are caps, floors, swaptions and transaction-
specific hedges:

<TABLE>
<CAPTION>
                                       Interest Rate Hedges                             Currency Hedges
 Weighted Average Life                                         Valuation Dates:
   of Hedge in Years              Daily                  Weekly                  Daily                 Weekly
-----------------------------------------------------------------------------------------------------------------
<S>                               <C>                    <C>                     <C>                    <C>
Less than 1 year                  0.65%                  0.75%                   6.30%                  7.40%
Equal to or greater               1.30%                  1.50%                   6.60%                  7.80%
than 1 year but less
than 2 years
Equal to or greater               1.90%                  2.20%                   6.90%                  8.20%
than 2 years but less
than 3 years
Equal to or greater               2.50%                  2.90%                   7.10%                  8.50%
than 3 years but less
than 4 years
Equal to or greater               3.10%                  3.60%                   7.40%                  8.90%
than 4 years but less
than 5 years
Equal to or greater               3.60%                  4.20%                   7.70%                  9.20%
than 5 years but less
than 6 years
Equal to or greater               4.20%                  4.80%                   7.90%                  9.60%
than 6 years but less
than 7 years
Equal to or greater               4.70%                  5.40%                   8.20%                  9.90%
than 7 years but less
than 8 years
Equal to or greater               5.20%                  6.00%                   8.40%                 10.20%
than 8 years but less
than 9 years
Equal to or greater               5.70%                  6.60%                   8.60%                 10.50%
than 9 years but less
than 10 years
Equal to or greater               6.10%                  7.00%                   8.80%                 10.70%
than 10 years but less
than 11 years
Equal to or greater               6.50%                  7.50%                   9.00%                 11.00%
than 11 years but less
than 12 years
Equal to or greater               7.00%                  8.00%                   9.20%                 11.30%
than 12 years but less
than 13 years
Equal to or greater               7.40%                  8.50%                   9.40%                 11.50%
than 13 years but less
than 14 years
Equal to or greater               7.80%                  9.00%                   9.60%                 11.80%
than 14 years but less
than 15 years
Equal to or greater               8.20%                  9.50%                   9.80%                 11.80%
than 15 years but less
than 16 years
Equal to or greater               8.60%                  9.90%                  10.00%                 12.00%
than 16 years but less
than 17 years
Equal to or greater               9.00%                  10.40%                 10.10%                 12.00%
than 17 years but less
than 18 years
Equal to or greater               9.40%                  10.80%                 10.30%                 12.00%
than 18 years but less
than 19 years
Equal to or greater               9.70%                  11.00%                 10.50%                 12.00%
than 19 years but less
than 20 years
Equal to or greater              10.00%                  11.00%                 10.70%                 12.00%
than 20 years but less
than 21 years
Equal to or greater              10.00%                  11.00%                 10.80%                 12.00%
than 21 years but less
than 22 years
Equal to or greater              10.00%                  11.00%                 11.00%                 12.00%
than 22 years but less
than 23 years
Equal to or greater              10.00%                  11.00%                 11.00%                 12.00%
than 23 years but less
than 24 years
Equal to or greater              10.00%                  11.00%                 11.00%                 12.00%
than 24 years but less
than 25 years
Equal to or greater              10.00%                  11.00%                 11.00%                 12.00%
than 25 years but less
than 26 years
Equal to or greater              10.00%                  11.00%                 11.00%                 12.00%
than 26 years but less
than 27 years
Equal to or greater              10.00%                  11.00%                 11.00%                 12.00%
than 27 years but less
than 28 years
Equal to or greater              10.00%                  11.00%                 11.00%                 12.00%
than 28 years but less
than 29 years
Equal to or greater              10.00%                  11.00%                 11.00%                 12.00%
than 29 years but less
than 30 years
Equal to 30 years                10.00%                  11.00%                 11.00%                 12.00%
</TABLE>

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00120-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00120-of-00352.parquet"}]]