Question

Digital signals used in ISDN have _______.

• A. Discrete values
• B. Whole number values
• C. Any value
• D. Fractional value

Answer 1

The correct option is A Discrete values

Digital signals used in ISDN have discrete values.

Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network.

A digital signal is a signal that is being used to represent data as a sequence of discrete values; at any given time it can only take on one of a finite number of values.