Document:

Exhibit 10.2

                                SECOND AMENDMENT
                     TO ADDITIONAL SENIOR SECURITY AGREEMENT

                  SECOND AMENDMENT, dated March 30, 2004 (the "Amendment"), to
the Additional Senior Security Agreement referred to below, by and among (i)
GENERAL DATACOMM INDUSTRIES, INC., a Delaware corporation, GENERAL DATACOMM,
INC., a Delaware corporation ("GDC"), DATACOMM LEASING CORPORATION, a Delaware
corporation, GDC HOLDING COMPANY, LLC, a Delaware limited liability company, GDC
NAUGATUCK, INC., a Delaware corporation, GDC FEDERAL SYSTEMS, INC., a Delaware
corporation, GDC REALTY, INC., a Texas corporation (each, a "Borrower" and
collectively, the "Debtors") and Howard S. Modlin and John L. Segall (together
with their successors and assigns the "Secured Party")

                  WHEREAS, the Debtors are obligated to repay certain
indebtedness owing to Ableco Finance LLC as Agent and the Lenders under that
certain Loan and Security Agreement dated as of August 20, 2002 (as amended,
supplemented and otherwise modified from time to time, the " Senior Loan
Agreement");

                  WHEREAS, GDC and the other Debtors have requested that the
Secured Party loan GDC an additional $250,000 which shall be used to pay and
replace $250,000 of the obligations owed to the Lenders under the Senior Loan
Agreement, subject to (i) the execution and delivery of this Amendment by the
Debtors, and (ii) the other terms and conditions set forth in this Amendment;

                  NOW THEREFORE, in consideration of the premises and other good
and valuable consideration, the parties hereto hereby agree as follows:

         1.       Definitions in Amendment. Any capitalized term used herein and
not defined shall have the meaning assigned to it in the Additional Senior
Security Agreement dated December 30, 2003 between the Debtors and the Secured
Party ( the "Security Agreement").

         2.       Replacement Loans. In consideration of the aggregate principal
amount of $250,000 to be loaned April 1, 2004 by the Secured Party to GDC
reflected by two separate notes of $125,000 each, GDC covenants and agrees such
funds shall be used to pay and replace Indebtedness of a like amount owed to the
Lenders under the Senior Loan Agreement on such date and shall be Replacement
Debt as defined in the Subordinated Security Agreement dated September 15, 2003
between the Debtors and HSBC Bank USA as Trustee and as provided in the
Indenture dated September 15, 2003 between General DataComm Industries, Inc. and
HSBC Bank USA.

         3.       Indebtedness Secured. Paragraph 3 of the Security Agreement is
amended to read in its entirety as follows: " Indebtedness Secured. The Security
Interest granted by Debtors secures payment of any and all indebtedness of
Parent and its subsidiaries incurred under the promissory notes payable to
Secured Party dated December 30, 2003 in the original aggregate principal amount
of $600,000, the promissory notes payable to Secured Party dated March 1, 2004
in the original aggregate principal amount of $250,000, and the promissory notes

<PAGE>

payable to Secured Party dated April 1, 2004 in the aggregate principal amount
of $250,000 and which notes total $1,100,000 (the "Notes") whether or not any
such indebtedness is now existing or hereafter incurred, of every kind and
character, direct or indirect, and whether any such indebtedness is from time to
time reduced and thereafter increased, or entirely extinguished and thereafter
reincurred, including, without limitation, any sums advanced by Secured Party
for taxes, assessments, insurance and other charges and expenses as hereinafter
provided, and all amounts owed under any modifications, renewals or extensions
of any of the foregoing obligations (collectively, the "Indebtedness")."

         4.       Miscellaneous.
                  -------------

                  (a)      Continued Effectiveness of Security Agreement. Except
as otherwise expressly provided herein, the Security Agreement shall continue to
be, in full force and effect and is hereby ratified and confirmed in all
respects. Except as expressly provided herein, the execution, delivery and
effectiveness of this Amendment shall not constitute an amendment of any other
provision of the Security Agreement.

                  (b)      Counterparts. This Amendment may be executed in any
number of counterparts and by different parties hereto in separate counterparts,
each of which shall be deemed to be an original, but all of which taken together
shall constitute one and the same agreement.

                  (c)      Headings. Section headings herein are included for
convenience of reference only and shall not constitute a part of this Amendment
for any other purpose.

                  (d)      Governing Law. This Amendment shall be governed by,
and construed in accordance with, the law of the State of New York.

                  IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be executed and delivered as of the date first above written.

                                     Borrowers:
                                     ---------

                                     GENERAL DATACOMM INDUSTRIES, INC.,
                                     a Delaware corporation

                                     By
                                       -----------------------------------------

                                     Title:
                                           -------------------------------------

                                     GENERAL DATACOMM, INC.,
                                     a Delaware corporation

                                     By
                                       -----------------------------------------

                                     Title:
                                           -------------------------------------

<PAGE>

                                     DATACOMM LEASING CORPORATION,
                                     a Delaware corporation

                                     By
                                       -----------------------------------------

                                     Title:
                                           -------------------------------------

                                     GDC HOLDING COMPANY, LLC,
                                     a Delaware limited liability company

                                     By
                                       -----------------------------------------

                                     Title:
                                           -------------------------------------

                                     GDC FEDERAL SYSTEMS, INC.,
                                     a Delaware corporation

                                     By
                                       -----------------------------------------

                                     Title:
                                           -------------------------------------

                                     GDC NAUGATUCK, INC.,
                                     a Delaware corporation

                                     By
                                       -----------------------------------------

                                     Title:
                                           -------------------------------------

                                     GDC REALTY, INC.,
                                     a Texas corporation

                                     By
                                       -----------------------------------------

                                     Title:
                                           -------------------------------------

                                     Secured Party
                                     -------------

                                     -------------------------------------------
                                     Howard S. Modlin

                                     -------------------------------------------
                                     John L. SegallExhibit 10.3

                                 THIRD AMENDMENT
                                TO LOAN AGREEMENT

                  THIRD AMENDMENT, dated March 30, 2004 (the "Amendment"), to
the Loan Agreement referred to below, by and among (i) GENERAL DATACOMM
INDUSTRIES, INC., a Delaware corporation, GENERAL DATACOMM, INC., a Delaware
corporation ("GDC"), DATACOMM LEASING CORPORATION, a Delaware corporation, GDC
HOLDING COMPANY, LLC, a Delaware limited liability company, GDC NAUGATUCK, INC.,
a Delaware corporation, GDC FEDERAL SYSTEMS, INC., a Delaware corporation, GDC
REALTY, INC., a Texas corporation (each, a "Borrower" and collectively, the
"Borrowers"), (ii) the lenders party thereto from time to time (the "Lenders"),
and (iii) ABLECO FINANCE LLC, as agent for the Lenders (in such capacity, the
"Agent").

                  WHEREAS, the Borrowers are obligated to repay certain
indebtedness owing to the Agent and the Lenders under that certain Loan and
Security Agreement dated as of August 20, 2002 (as amended, supplemented and
otherwise modified from time to time, the "Loan Agreement");

                  WHEREAS, GDC has requested that the Lenders permit (i) GDC's
incurrence of additional loans to be made by Howard S. Modlin and John L. Segall
in an aggregate principal amount of $250,000 (the "Affiliate Loans") for the
payment of and to replace $250,000 of the Indebtedness owed the Lender and (ii)
the grant by the Borrowers of Liens on their assets to secure the repayment of
the Affiliate Loans, all in accordance with the promissory notes and the
security agreement attached hereto as Exhibit A;

                  WHEREAS, the Lenders are willing to consent to the
transactions described in the immediately preceding paragraph, subject to (i)
the execution and delivery of this Amendment by the Borrowers, and (ii) the
other terms and conditions set forth in this Amendment;

                  NOW THEREFORE, in consideration of the premises and other good
and valuable consideration, the parties hereto hereby agree as follows:

         1.1      Definitions in Amendment. Any capitalized term used herein and
not defined shall have the meaning assigned to it in the Loan Agreement.

         1.2      Affiliate Loans. Section 1.1 of the Loan Agreement is hereby
amended by replacing the definition of the term "Affiliate Loans" to read in its
entirety as follows:

                           "Affiliate Loans" means the loans made by Howard S.
         Modlin and John L. Segall to the Parent, on or about December 30, 2003,
         in an aggregate principal amount of $600,000, which loans are evidenced
         by promissory notes issued by the Parent and dated on or about December
         30, 2003, the loans made by Howard S. Modlin and John L. Segall to the
         Parent on or about March 1, 2004 in an aggregate principal amount of
         $250,000, which loans are evidenced by Promissory Notes issued by the
         Parent and dated on or about March 1, 2004, and the loans made by
         Howard S. Modlin and John L. Segall to the Parent on or about April 1,
         2004 in an aggregate principal amount of $250,000, which loans are
         evidenced by Promissory Notes issued by the Parent and dated on or
         about April 1, 2004."

<PAGE>

         1.3      Indebtedness; Amendments. (a) Section 7.1(g) of the Loan
Agreement is hereby amended in its entirety to read as follows:

                           "(g) the Affiliate Loans, provided that (i) the
         aggregate principal amount of the Affiliate Loans shall not exceed
         $1,100,000 and (ii) the Borrowers shall not pay any principal of,
         interest on or any other amount in respect of such Affiliate Loans if
         an Event of Default exists or would arise after giving effect to any
         such payment."

         2.       Conditions. The effectiveness of this Amendment is subject to
the fulfillment, in a manner satisfactory to the Agent, of each of the following
conditions precedent (the date such conditions are fulfilled or waived by the
Lender is hereinafter referred to as the "Amendment Effective Date"):

                  (a)      Representations and Warranties; No Event of Default.
The representations and warranties contained herein, in Section 5 of the Loan
Agreement and in each other Loan Document and certificate or other writing
delivered to the Agent or any Lender pursuant hereto on or prior to the
Amendment Effective Date shall be correct on and as of the Amendment Effective
Date as though made on and as of such date, except to the extent that such
representations and warranties (or any schedules related thereto) expressly
relate solely to an earlier date (in which case such representations and
warranties shall be true and correct on and as of such date); and no Default or
Event of Default shall have occurred and be continuing on the Amendment
Effective Date or would result from this Amendment becoming effective in
accordance with its terms.

                  (b)      Delivery of Documents. The Lender shall have received
on or before the Amendment Effective Date the following, each in form and
substance satisfactory to the Agent and, unless indicated otherwise, dated the
Amendment Effective Date:

                           (i)      counterparts of this Amendment duly executed
by the Borrowers and the Lenders; and

                           (ii)     such other agreements, instruments,
approvals, opinions and other documents as the Agent may reasonably request.

                  (c)      Proceedings. All proceedings in connection with the
transactions contemplated by this Amendment, and all documents incidental
thereto, shall be satisfactory to the Agent and its special counsel, and the
Agent and such special counsel shall have received all such information and such
counterpart originals or certified copies of documents, and such other
agreements, instruments, approvals, opinions and other documents, as the Agent
or such special counsel may reasonably request.

                                       2
<PAGE>

         3.       Representations and Warranties. Each Borrower hereby
represents and warrants to the Agent and the Lenders as follows:

                  (a)      Representations and Warranties; No Event of Default.
The representations and warranties herein, in Section 5 of the Loan Agreement
and in each other Loan Document and certificate or other writing delivered to
the Agent or any Lender pursuant hereto on or prior to the Amendment Effective
Date are correct on and as of the Amendment Effective Date as though made on and
as of such date, except to the extent that such representations and warranties
(or any schedules related thereto) expressly relate solely to an earlier date
(in which case such representations and warranties are true and correct on and
as of such date); and no Default or Event of Default has occurred and is
continuing on the Effective Date or would result from this Amendment becoming
effective in accordance with its terms.

                  (b)      Organization, Good Standing, Etc. Such Borrower (i)
is a corporation duly organized, validly existing and in good standing under the
laws of the state of its organization, (ii) has all requisite power and
authority to execute, deliver and perform this Amendment and the other Loan
Documents to which it is a party being executed in connection with this
Amendment, and to perform the Loan Agreement, as amended hereby, and (iii) is
duly qualified to do business and is in good standing in each jurisdiction in
which the character of the properties owned or leased by it or in which the
transaction of its business makes such qualification necessary except where the
failure to be so qualified reasonably could not be expected to have a Material
Adverse Change.

                  (c)      Authorization, Etc. The execution, delivery and
performance by such Borrower of this Amendment and each other Loan Document to
which it is a party being executed in connection with this Amendment, and the
performance by such Borrower of the Loan Agreement, as amended hereby, (i) have
been duly authorized by all necessary action, (ii) do not and will not
contravene such Borrower's charter or by-laws, any applicable law or any
contractual restriction binding on or otherwise affecting it or any of its
properties, (iii) do not and will not result in or require the creation of any
Lien (other than pursuant to any Loan Document) upon or with respect to any of
its properties, and (iv) do not and will not result in any suspension,
revocation, impairment, forfeiture or nonrenewal of any permit, license,
authorization or approval applicable to its operations or any of its properties.

         4.       Miscellaneous.

                  (a)      Continued Effectiveness of the Loan Agreement. Except
as otherwise expressly provided herein, the Loan Agreement and the other Loan
Documents are, and shall continue to be, in full force and effect and are hereby
ratified and confirmed in all respects, except that on and after the Amendment
Effective Date (i) all references in the Loan Agreement to "this Agreement",
"hereto", "hereof", "hereunder" or words of like import referring to the Loan
Agreement shall mean the Loan Agreement as amended by this Amendment, and (ii)
all references in the other Loan Documents to which any Borrower is a party to
the "Loan Agreement", "thereto", "thereof", "thereunder" or words of like import
referring to the Loan Agreement shall mean the Loan Agreement as amended by this
Amendment. Except as expressly provided herein, the execution, delivery and
effectiveness of this Amendment shall not operate as an amendment of any right,
power or remedy of the Lender under the Loan Agreement or any other Loan
Document, nor constitute an amendment of any provision of the Loan Agreement or
any other Loan Document.

                                       3
<PAGE>

                  (b)      Counterparts. This Amendment may be executed in any
number of counterparts and by different parties hereto in separate counterparts,
each of which shall be deemed to be an original, but all of which taken together
shall constitute one and the same agreement.

                  (c)      Headings. Section headings herein are included for
convenience of reference only and shall not constitute a part of this Amendment
for any other purpose.

                  (d)      Governing Law. This Amendment shall be governed by,
and construed in accordance with, the law of the State of New York.

                  (e)      Costs and Expenses. The Borrowers jointly and
severally agree to pay on demand all fees, costs and expenses of the Agent and
each Lender in connection with the preparation, execution and delivery of this
Amendment and the other related agreements, instruments and documents.

                  (f)      Amendment as Loan Document. Each Borrower hereby
acknowledges and agrees that this Amendment constitutes a "Loan Document" under
the Loan Agreement. Accordingly, it shall be an Event of Default under the Loan
Agreement if (i) any representation or warranty made by a Borrower under or in
connection with this Amendment shall have been untrue, false or misleading in
any material respect when made, or (ii) a Borrower shall fail to perform or
observe any term, covenant or agreement contained in this Amendment.

                  (g)      Waiver of Jury Trial. EACH BORROWER, THE AGENT AND
THE LENDER EACH HEREBY IRREVOCABLY WAIVES ALL RIGHT TO TRIAL BY JURY IN ANY
ACTION, PROCEEDING OR COUNTERCLAIM (WHETHER BASED ON CONTRACT, TORT OR
OTHERWISE) ARISING OUT OF OR RELATING TO THIS AMENDMENT OR THE ACTIONS OF THE
AGENT OR ANY LENDER IN THE NEGOTIATION, ADMINISTRATION, PERFORMANCE OR
ENFORCEMENT HEREOF.

                                       4
<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be executed and delivered as of the date first above written.

                                            Borrowers:
                                            ---------

                                            GENERAL DATACOMM INDUSTRIES, INC.,
                                            a Delaware corporation

                                            By
                                               ---------------------------------

                                            Title:
                                                  ------------------------------

                                            GENERAL DATACOMM, INC.,
                                            a Delaware corporation

                                            By
                                               ---------------------------------

                                            Title:
                                                  ------------------------------

                                            DATACOMM LEASING CORPORATION,
                                            a Delaware corporation

                                            By
                                               ---------------------------------

                                            Title:
                                                  ------------------------------

                                            GDC HOLDING COMPANY, LLC,
                                            a Delaware limited liability company

                                            By
                                               ---------------------------------

                                            Title:
                                                  ------------------------------

                                            GDC FEDERAL SYSTEMS, INC.,
                                            a Delaware corporation

                                            By
                                               ---------------------------------

                                            Title:
                                                  ------------------------------

<PAGE>

                                            GDC NAUGATUCK, INC.,
                                            a Delaware corporation

                                            By
                                               ---------------------------------

                                            Title:
                                                  ------------------------------

                                            GDC REALTY, INC.,
                                            a Texas corporation

                                            By
                                               ---------------------------------

                                            Title:
                                                  ------------------------------

                                            Agent and Lender:
                                            ----------------

                                            ABLECO FINANCE LLC,
                                            a Delaware limited liability
                                            company, on behalf of itself and its
                                            affiliated assigns

                                            By
                                               ---------------------------------

                                            Title:
                                                  ------------------------------

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