Explain the concept of Integrated Services Digital Network (ISDN). Dis

Question

Explain the concept of Integrated Services Digital Network (ISDN). Discuss the motivational factors responsible for its development.

24 Jul 2024

Answer :

Word Count : 641

Integrated Services Digital Network (ISDN): Concept and Motivational Factors

Concept of ISDN:

Integrated Services Digital Network (ISDN) is a set of communication standards for digital telephone connections and ISDN communication services. It was designed to replace the traditional analog telephone system with a more efficient and versatile digital system. ISDN provides a unified digital interface for voice, data, and video services, which contrasts with the analog systems that required separate lines for each type of communication.

ISDN operates by using digital transmission technology to deliver services over standard telephone lines. The primary components of ISDN include the Basic Rate Interface (BRI) and the Primary Rate Interface (PRI).

1. Basic Rate Interface (BRI): This interface is aimed at smaller businesses or residential users and consists of two 64 kbps B-channels (bearer channels) and one 16 kbps D-channel (delta channel). The B-channels carry the actual voice or data, while the D-channel is used for signaling and control information. The BRI interface provides ____ _______ ________ __________ _____ ____ ____ ____ ______ ____ ________.
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