DETAILED CONCEPT OF INTEGRATED SERVICES DIGITAL NETWORK

Smridhi Malhotra, Sarita rani, Vinesh Sangwan

Abstract


Integrated Services for Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of data, voice, video, and other network services over the traditional circuits of the Public Switched Telephone Network (PSTN). It was first defined in 1988 in the CCITT red book. Before ISDN, the telephone system was viewed as a way to transport voice and some special services available for data.

Keywords


DETAILED CONCEPT; NTEGRATED SERVICES; DIGITAL NETWORK

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Copyright (c) 2014 Smridhi Malhotra, Sarita rani, Vinesh Sangwan

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