Exhibit 31.1
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                                  CERTIFICATION

I, Howard S. Modlin, Chairman of the Board, President and Chief Executive
Officer of General DataComm Industries, Inc. (the Company) certify that:

1.   I have reviewed this Report on Form 10-K/A (the "Report") of the Company.

2.   Based on my knowledge, this Report does not contain any untrue statement of
     a material fact or omit to state of material fact necessary to make the
     statements made, in light of the circumstances under which such statements
     were made, not misleading with respect to the period covered by this
     Report.

                                       /s/ HOWARD S. MODLIN
                                       -----------------------------------------
Date:  January 28, 2004                Howard S. Modlin
                                       Chairman of the Board, President and
                                       Chief Executive Officer



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