Question

What are the two types of signaling used in ISDN?

Answer 1

There are two types of ISDN lines. The basic rate line is an ISDN user-to-network interface made up of three communications channels-two B-channels (which can bonded) for voice, data, etc. and one D-channel for signaling.ISDN is comprised of digital telephony and data-transport services offered by regional telephone carriers. ISDN involves the digitization of the telephone network to transmit voice, data, text, graphics, music, video, and other source material over existing telephone wires. ISDN devices include the following: Terminals.