1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS that each individual whose signature appears below constitutes and appoints William S. Lawrence, Howard S. Modlin and Gerald Gordon and each of them his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution, to sign on his behalf individually and in each capacity stated below for him a registration statement on Form S-3 for General DataComm Industries, Inc. and any and all amendments (including post-effective amendments) and to file the same, with all exhibits thereto, and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or his substitutes, may lawfully do or cause to be done by virtue hereof. /s/ JOHN L. SEGALL ------------------------------ John L. Segall Date: 10/17/94 ------------------------ 2 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS that each individual whose signature appears below constitutes and appoints William S. Lawrence, Howard S. Modlin and Gerald Gordon and each of them his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution, to sign on his behalf individually and in each capacity stated below for him a registration statement on Form S-3 for General DataComm Industries, Inc. and any and all amendments (including post-effective amendments) and to file the same, with all exhibits thereto, and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or his substitutes, may lawfully do or cause to be done by virtue hereof. /s/ LEE M. PASCHALL ------------------------------ Lee M. Paschall Date: 24 Oct. 94 ------------------------ 3 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS that each individual whose signature appears below constitutes and appoints William S. Lawrence, Howard S. Modlin and Gerald Gordon and each of them his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution, to sign on his behalf individually and in each capacity stated below for him a registration statement on Form S-3 for General DataComm Industries, Inc. and any and all amendments (including post-effective amendments) and to file the same, with all exhibits thereto, and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or his substitutes, may lawfully do or cause to be done by virtue hereof. /s/ FREDERICK R. CRONIN ------------------------------ Frederick R. Cronin Date: October 21, 1994 ------------------------ 4 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS that each individual whose signature appears below constitutes and appoints William S. Lawrence, Howard S. Modlin and Gerald Gordon and each of them his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution, to sign on his behalf individually and in each capacity stated below for him a registration statement on Form S-3 for General DataComm Industries, Inc. and any and all amendments (including post-effective amendments) and to file the same, with all exhibits thereto, and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or his substitutes, may lawfully do or cause to be done by virtue hereof. /s/ HOWARD S. MODLIN ------------------------------ Howard S. Modlin Date: 10/19/94 ------------------------ 5 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS that each individual whose signature appears below constitutes and appoints William S. Lawrence, Howard S. Modlin and Gerald Gordon and each of them his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution, to sign on his behalf individually and in each capacity stated below for him a registration statement on Form S-3 for General DataComm Industries, Inc. and any and all amendments (including post-effective amendments) and to file the same, with all exhibits thereto, and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or his substitutes, may lawfully do or cause to be done by virtue hereof. /s/ CHARLES P. JOHNSON ------------------------------ Charles P. Johnson, Chairman of the Board and Chief Executive Officer Date: 10/21/94 ------------------------ 6 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS that each individual whose signature appears below constitutes and appoints William S. Lawrence, Howard S. Modlin and Gerald Gordon and each of them his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution, to sign on his behalf individually and in each capacity stated below for him a registration statement on Form S-3 for General DataComm Industries, Inc. and any and all amendments (including post-effective amendments) and to file the same, with all exhibits thereto, and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or his substitutes, may lawfully do or cause to be done by virtue hereof. /s/ WILLIAM G. HENRY ------------------------------ Corporate Controller (Principal Accounting Officer) William G. Henry Date: 28 Oct. 94 ------------------------