Standards Used in Telephone System (With Diagram) | Networking

This article throws light upon the following two standards that are mainly used in telephone systems. The standards are: 1. Narrowband ISDN 2. Broadband ISDN. 1. Narrowband ISDN: The present public circuit switched telephone system meant chiefly to cater to voice transmission, is largely analogue. However, in spite of these advantages the telephone systems throughout the world continue to be [...]