9 February 2019

ISDN full form

What is the full form of ISDN?

Answer :


  • Integrated Service Digital Network

What does ISDN mean?

ISDN is a set of communication standard for simultaneous digital transmission and technology of voice, data, video and other types of network services over the traditional circuits of the public switched telephone network. It was first defined in the year of 1988 in the CCITT red book.

ISDN network was designed to run on digital telephone systems that were already in place. ISDN to be standardized that it was never fully deployed in the telecommunications network it was intended for.