Document:

<PAGE>

                                                                  Exhibit 10.115

SILICON VALLEY BANK

      AMENDMENT TO LOAN DOCUMENTS

 BORROWER: VERSO TECHNOLOGIES, INC.
           PROVO PREPAID (DELAWARE) CORP.
           TELEMATE.NET SOFTWARE, INC.
           NEEDHAM (DELAWARE) CORP.

 DATE:     JANUARY 27, 2006

      THIS AMENDMENT TO LOAN DOCUMENTS is entered into between Silicon Valley
Bank ("Silicon") and the borrower named above ("Borrower").

      The Parties agree to amend the Loan and Security Agreement between them,
dated December 14, 2001 (as otherwise amended, if at all, the "Loan Agreement"),
as follows, effective as of the date hereof. (Capitalized terms used but not
defined in this Amendment shall have the meanings set forth in the Loan
Agreement.)

      1. MODIFIED MINIMUM CASH ON HAND FINANCIAL COVENANT. The Minimum Cash On
Hand Financial Covenant set forth in Section 5 of the Schedule to Loan and
Security Agreement is hereby amended and restated in its entirety to read as
follows:

             MINIMUM CASH
             ON HAND/MINIMUM
             EXCESS AVAILABILITY:   As of the date Borrower submits each of its
                                    weekly Transaction Reports to Silicon,
                                    Borrower shall maintain a combination of a
                                    minimum of unrestricted cash (and cash
                                    equivalents) in accounts maintained at
                                    Silicon and Minimum Excess Availability
                                    (as defined below) of not less than
                                    $2,000,000.

      2. REPRESENTATIONS TRUE. Borrower represents and warrants to Silicon that
all representations and warranties set forth in the Loan Agreement, as amended
hereby, are true and correct.

      3. GENERAL PROVISIONS. This Amendment, the Loan Agreement, any prior
written amendments to the Loan Agreement signed by Silicon and Borrower, and the
other written documents and agreements between Silicon and Borrower set forth in
full all of the representations and agreements of the parties with respect to
the subject matter hereof and supersede all prior discussions, representations,
agreements and understandings between the

                                       -1-
<PAGE>

         SILICON VALLEY BANK                         AMENDMENT TO LOAN DOCUMENTS

parties with respect to the subject hereof. Except as herein expressly amended,
all of the terms and provisions of the Loan Agreement, and all other documents
and agreements between Silicon and Borrower shall continue in full force and
effect and the same are hereby ratified and confirmed.

BORROWER:                                           SILICON:

VERSO TECHNOLOGIES, INC.                            SILICON VALLEY BANK

BY /s/ Juliet M. Reising                        BY    /s/ Peter Bendoris
   ----------------------------                       --------------------------
   PRESIDENT OR VICE PRESIDENT                  Title Relationship Manager

BY /s/ David Ryan
   -----------------------------
   SECRETARY OR ASS'T SECRETARY

  BORROWER:                                     BORROWER:

PROVO PREPAID (DELAWARE)                        TELEMATE.NET SOFTWARE, INC.
CORP. (FKA NACT
TELECOMMUNICATIONS, INC.)

BY /s/ Juliet M. Reising                       BY /s/ Juliet M. Reising
   ---------------------------                     -----------------------------
   PRESIDENT OR VICE PRESIDENT                     PRESIDENT OR VICE PRESIDENT

BY /s/ David Ryan                              BY /s/ David Ryan
   ---------------------------                     -----------------------------
   SECRETARY OR ASS'T  SECRETARY                   SECRETARY OR ASS'T SECRETARY

BORROWER:

NEEDHAM (DELAWARE) CORP. (FKA
MCK COMMUNICATIONS, INC.)

BY /s/ Juliet M. Reising
   ------------------------------
   PRESIDENT OR VICE PRESIDENT

BY /s/ David Ryan
   ------------------------------
   SECRETARY OR ASS'T SECRETARY

                                       -2-
<PAGE>

         SILICON VALLEY BANK                         AMENDMENT TO LOAN DOCUMENTS

                                     CONSENT

      The undersigned acknowledges that its consent to the foregoing Agreement
is not required, but the undersigned nevertheless does hereby consent to the
foregoing Agreement and to the documents and agreements referred to therein and
to all future modifications and amendments thereto, and any termination thereof,
and to any and all other present and future documents and agreements between or
among the foregoing parties. Nothing herein shall in any way limit any of the
terms or provisions of the Cross-Corporate Continuing Guaranty of the
undersigned, all of which are hereby ratified and affirmed.

CLARENT CANADA LTD.

BY    /s/ Juliet M. Reising
      ------------------------------
TITLE VP

                                       -3-<PAGE>

                                                                  Exhibit 10.116

SILICON VALLEY BANK

                           AMENDMENT TO LOAN DOCUMENTS

                                 (EXIM PROGRAM)

BORROWER: VERSO TECHNOLOGIES, INC.
          PROVO PREPAID (DELAWARE) CORP.
          TELEMATE.NET SOFTWARE, INC.
          NEEDHAM (DELAWARE) CORP.

DATE:     MARCH 24, 2006

      THIS AMENDMENT TO LOAN DOCUMENTS (EXIM PROGRAM) is entered into between
Silicon Valley Bank ("Silicon") and the borrower named above ("Borrower").

      Reference is hereby made to that certain Loan and Security Agreement (Exim
Program) between Borrower and Silicon dated February 12, 2003 (as otherwise
amended, if at all, the "Loan Agreement"). Notwithstanding the Maturity Date of
March 17, 2006, since Obligations have remained outstanding, in accordance with
Section 6.3 of the Loan Agreement, the Loan Agreement has continued in full
force and effect. The Parties agree to amend the Loan Agreement, as follows,
effective as of the date hereof; provided, however, that prior to any of the
following modifications going into effect, Silicon must obtain the finalized,
written approval from Exim Bank regarding such modifications. (Capitalized terms
used but not defined in this Amendment shall have the meanings set forth in the
Loan Agreement.)

      1. MODIFIED INTEREST PROVISION. Section 9.1 of the Loan Agreement is
hereby amended to read as follows:

         9.1 INTEREST COMPUTATION. In computing interest on the Obligations, all
         checks and other items of payment received by Silicon (including
         proceeds of Receivables and payment of the Obligations in full) shall
         be deemed applied by Silicon on account of the Obligations two Business
         Days after receipt by Silicon of immediately available funds (except
         with respect to wire transfers which shall be deemed applied by Silicon
         on account of the Obligations the same Business Day as deemed received
         by Silicon), and, for purposes of the foregoing, any such funds
         received after 12:00 Noon on any day shall be deemed received on the
         next Business Day. Silicon shall not, however, be required to credit
         Borrower's account for the amount of any item of payment which is
         unsatisfactory to Silicon in its

                                      -1-
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      SILICON VALLEY BANK                     AMENDMENT TO LOAN DOCUMENTS (EXIM)

         sole discretion, and Silicon may charge Borrower's loan account for the
         amount of any item of payment which is returned to Silicon unpaid.

      2. MODIFIED INVENTORY SUBLIMIT. That portion of Section 1 of the Schedule
to Loan and Security Agreement (Exim Program) that currently reads as follows:

      (b) 65% (an "Advance Rate") of the value of Borrower's Eligible Inventory
(as defined in Section 8 above).

is hereby amended in its entirety to read as follows:

      (b) the lesser of:

         (I) 65% (an "Advance Rate") of the value of Borrower's Eligible
             Inventory (as defined in Section 8 above); or

         (II) $3,000,000 through June 30, 2006; $2,750,000 from July 1, 2006
              through September 30, 2006 and $2,500,000 from and after October
              1, 2006.

      3. MODIFIED FOREIGN EXCHANGE CONTRACT SUBLIMIT. The Foreign Exchange
Contract Sublimit set forth in Section 1 of the Schedule to Loan and Security
Agreement (Exim Program) is hereby amended to read as follows:

         FOREIGN EXCHANGE

         CONTRACT SUBLIMIT:           $500,000. The Foreign Exchange Contract
                                      Sublimit set forth in this Agreement is in
                                      addition to the Foreign Exchange Contract
                                      Sublimit set forth in the Non-Exim
                                      Agreement.

                                      Borrower may enter into foreign exchange
                                      forward contracts with Silicon, on its
                                      standard forms, under which Borrower
                                      commits to purchase from or sell to
                                      Silicon a set amount of foreign currency
                                      more than one business day after the
                                      contract date (the "FX Forward
                                      Contracts"); provided that (1) at the time
                                      the FX Forward Contract is entered into
                                      Borrower has Loans available to it under
                                      this Agreement in an amount at least equal
                                      to 10% of the amount of the FX Forward
                                      Contract; and (2) the total FX Forward
                                      Contracts at any one time outstanding may
                                      not exceed 10 times the amount of the
                                      Foreign Exchange Contract Sublimit set
                                      forth above; and (3) the total Foreign
                                      Exchange Contract Sublimit shall not, at
                                      any time, exceed $500,000. Silicon

                                      -2-
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      SILICON VALLEY BANK                     AMENDMENT TO LOAN DOCUMENTS (EXIM)

                                      shall have the right to withhold, from the
                                      Loans otherwise available to Borrower
                                      under this Agreement, a reserve (which
                                      shall be in addition to all other
                                      reserves) in an amount equal to 10% of the
                                      total FX Forward Contracts from time to
                                      time outstanding, and in the event at any
                                      time there are insufficient Loans
                                      available to Borrower for such reserve,
                                      Borrower shall deposit and maintain with
                                      Silicon cash collateral in an amount at
                                      all times equal to such deficiency, which
                                      shall be held as Collateral for all
                                      purposes of this Agreement. Silicon may,
                                      in its discretion, terminate the FX
                                      Forward Contracts at any time that an
                                      Event of Default occurs and is continuing.
                                      Borrower shall execute all standard form
                                      applications and agreements of Silicon in
                                      connection with the FX Forward Contracts,
                                      and without limiting any of the terms of
                                      such applications and agreements, Borrower
                                      shall pay all standard fees and charges of
                                      Silicon in connection with the FX Forward
                                      Contracts.

      4. MODIFIED INTEREST RATE. The Interest Rate set forth in Section 2 of the
Schedule to the Loan Agreement (Exim Program) is hereby amended in its entirety
to read as follows:

      INTEREST RATE (Section 1.2):

                                      A rate equal to the "Prime Rate" in effect
                                      from time to time, plus 2.25% per annum;
                                      provided, however, that the foregoing
                                      interest rate shall be reduced to a rate
                                      equal to the "Prime Rate" in effect from
                                      time to time, plus 1.75% per annum as set
                                      forth below if Borrower achieves EBITDA
                                      (as defined below) in excess of $0.00 for
                                      two consecutive fiscal quarters ending
                                      after the date of this Agreement and for
                                      so long as Borrower maintains EBITDA in
                                      excess of $0.00 for each fiscal quarter
                                      ending thereafter. If Borrower does not
                                      maintain EBITDA in excess of $0.00, the
                                      interest rate will be increased to a rate
                                      equal to the "Prime Rate" in effect from
                                      time to time plus 2.25% per annum.

                                      -3-
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      SILICON VALLEY BANK                     AMENDMENT TO LOAN DOCUMENTS (EXIM)

                                      For purposes hereof, "EBITDA" means, on a
                                      consolidated basis, Borrower's earnings
                                      before interest, taxes, depreciation and
                                      other non-cash amortization expenses and
                                      other non-cash expenses, determined in
                                      accordance with generally accepted
                                      accounting principles, consistently
                                      applied.

                                      Changes in the interest rate based on the
                                      Borrower's EBITDA as provided above shall
                                      go into effect as of the first day of the
                                      month following the month in which
                                      Borrower's financial statements are
                                      received, reviewed and approved by
                                      Silicon. If, based on the Borrower's
                                      EBITDA as shown in Borrower's financial
                                      statements there is to be an increase in
                                      the interest rate, the interest rate
                                      increase may be put into effect by Silicon
                                      as of the first day of the month closest
                                      to the date on which the financial
                                      statements are due, even if the delivery
                                      of the financial statements is delayed.
                                      Notwithstanding the foregoing, in no event
                                      shall an interest rate reduction go into
                                      effect if, at the date it is to go into
                                      effect, a Default or Event of Default has
                                      occurred and is continuing.

                                      Interest shall be calculated on the basis
                                      of a 360-day year for the actual number of
                                      days elapsed. "Prime Rate" means the rate
                                      announced from time to time by Silicon as
                                      its "prime rate;" provided that the "Prime
                                      Rate" in effect on any day shall not be
                                      less than 4.25% per annum; it is a base
                                      rate upon which other rates charged by
                                      Silicon are based, and it is not
                                      necessarily the best rate available at
                                      Silicon. The interest rate applicable to
                                      the Obligations shall change on each date
                                      there is a change in the Prime Rate.

      5. MODIFIED COLLATERAL MONITORING FEE. The Collateral Monitoring Fee set
forth in Section 3 of the Schedule to the Loan Agreement (Exim Program) is
hereby amended in its entirety to read as follows:

      Collateral Monitoring Fee:      $1,250, per month, payable in arrears
                                      (prorated for any partial month at the

                                      -4-
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      SILICON VALLEY BANK                     AMENDMENT TO LOAN DOCUMENTS (EXIM)

                                      beginning and at termination of this
                                      Agreement).

      6. MODIFIED MATURITY DATE. Section 4 of the Schedule to Loan and Security
Agreement (Exim Program) is hereby amended to read as follows:

         4. MATURITY DATE

          (Section 6.1):              March 23, 2007 [364 days from the date
                                      of this Amendment].

      7. MODIFIED REFERENCES TO EXIM DOCUMENTS. All references in the Loan
Agreement to a Master Guarantee Agreement shall mean that certain Master
Guarantee Agreement MA05 with an effective date of December 31, 2005. All
references in the Loan Agreement to a Delegated Authority Letter Agreement shall
mean that certain Delegated Authority Letter Agreement DA05 with an effective
date of December 31, 2005. All references in the Loan Agreement to a Loan
Authorization Agreement shall mean that certain Loan Authorization Notice of
approximate even date herewith. All references in the Loan Agreement to a
Borrower Agreement or Exim Borrower Agreement shall mean that certain Borrower
Agreement of approximate even date herewith.

      8. PROVO PREPAID (DELAWARE) CORP. AND NEEDHAM (DELAWARE) CORP. Borrower
represents and warrants that each of Provo Prepaid (Delaware) Corp. and Needham
(Delaware) Corp. is (i) a wholly-owned subsidiary of Verso Technologies, Inc.,
and (ii) is and will remain throughout the term of the Loan Agreement, inactive
with assets having an aggregate value of no more than $0.00. Borrower covenants
and agrees that while the Loan Agreement is in effect, Borrower shall not
transfer any assets or Collateral to either Provo Prepaid (Delaware) Corp. or
Needham (Delaware) Corp.

      9. FEES. In consideration for Silicon entering into this Agreement,
Borrower shall concurrently pay Silicon a fee in the amount of $115,000, which
fee shall be non-refundable and in addition to all interest and other fees
payable to Silicon under the Loan Documents. Silicon is authorized to charge
said fee to Borrower's loan account.

      10. REPRESENTATIONS TRUE. Borrower represents and warrants to Silicon that
all representations and warranties set forth in the Loan Agreement, as amended
hereby, are true and correct.

      11. GENERAL PROVISIONS. This Amendment, the Loan Agreement, any prior
written amendments to the Loan Agreement signed by Silicon and Borrower, and the
other written documents and agreements between Silicon and Borrower set forth in
full all of the representations and agreements of the parties with respect to
the subject matter hereof and supersede all prior discussions, representations,
agreements and understandings between the parties with respect to the subject
hereof. Except as herein expressly amended, all of the terms and provisions of
the Loan Agreement, and all other documents and agreements between Silicon and
Borrower shall continue in full force and effect and the same are hereby
ratified and confirmed.

                                      -5-
<PAGE>

      SILICON VALLEY BANK                     AMENDMENT TO LOAN DOCUMENTS (EXIM)

BORROWER:                                 SILICON:

VERSO TECHNOLOGIES, INC.                  SILICON VALLEY BANK

BY /s/ Steve Odom                         BY /s/ Peter Bendoris
   ----------------------------              ----------------------------
   Executive Chairman                     TITLE Relationship Manager - VP

BY /s/ Juliet M. Reising
   ----------------------------
   SECRETARY OR ASS'T SECRETARY

BORROWER:                                 BORROWER:

PROVO PREPAID (DELAWARE) CORP.            TELEMATE.NET SOFTWARE, INC.
(FKA NACT TELECOMMUNICATIONS, INC.)

BY /s/ Juliet M. Reising                   BY  /s/ Juliet M. Reising
   ----------------------------                --------------------------
   PRESIDENT OR VICE PRESIDENT                PRESIDENT OR VICE PRESIDENT

BY /s/ Leslie Gersack                      BY /s/ Leslie Gersack
   ----------------------------               ---------------------------
  SECRETARY OR ASS'T SECRETARY                SECRETARY OR ASS'T SECRETARY

BORROWER:

NEEDHAM (DELAWARE) CORP.
(FKA MCK COMMUNICATIONS, INC.)

BY /s/ Juliet M. Reising
   ----------------------------
   PRESIDENT OR VICE PRESIDENT

BY /s/ Leslie Gersack
   ----------------------------
   SECRETARY OR ASS'T SECRETARY

-1

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