EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the registration statement on
Form S-8 of General DataComm Industries, Inc. of our report dated November 30,
2005 (December 9, 2005 as to Note 18) relating to our audits of the consolidated
balance sheets of General DataComm Industries, Inc. as of September 30, 2005 and
2004 and the related consolidated statements of operations, stockholders'
deficit and cash flows for the years then ended, which report appears in the
September 30, 2005 annual report on Form 10-KSB/A of General DataComm
Industries, Inc.

Our report dated November 30, 2005 (December 9, 2005 as to Note 18) contains an
explanatory paragraph that states that the Company emerged from bankruptcy
proceedings pursuant to a Plan of Reorganization under Chapter 11 of the
Bankruptcy Code, has both a working capital and stockholders' deficit at
September 30, 2005, has limited ability to obtain new financing and during
fiscal 2006 may be unable to comply with financial loan covenants related to its
restructured secured indebtedness, all of which raise substantial doubt about
its ability to continue as a going concern. The financial statements do not
include any adjustments that might result from the outcome of this uncertainty.

/s/ Eisner LLP

New York, New York
February 20, 2006