| ISDN - Integrated Services Digital Network is a network in general evolving from a telephone IDN (Integrated Digital Network), that provides end-to-end digital connectivity to support a wide range of services, including voice and non-voice services, to which users have access by a limited set of standard multi-purpose user-network interfaces. (ITU-T Definition) |
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1965 - Concept of ISDN originated 1972 - ISDN concept agreed by ITU-T 1980 - Yellow Book Recommendations published by ITU-T 1984 - Red Book Recommendations published by ITU-T 1988 - Blue Book Recommendations published by ITU-T |
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B-ISDN is an Integrated Network that has the capability to accomodate various types of broadband signals. The fundamental objective is to achieve complete integration of services ranging from low bit rate bursty signals up to broadband continuous real-time signals including voiceband services, high speed data transmission and video signal transmission. |
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A Service or System requiring Transmission Channels capable of supporting rates greater than the Primary Rate. (ITU-T I113) (Diagram not ready) |