NationMaster - Encyclopedia: Broadband ISDN

In the 1970s the telecommunications industry conceived that digital services would follow much the same pattern as voice services, and conceived a grandiose vision of end_to_end circuit switched services, known as the Broadband Integrated Services Digital Network (B-ISDN). This was conceived as a logical extension of the end-to-end circuit switched data service, ISDN.

The technology for B-ISDN was going to be Asynchronous Transfer Mode (ATM), which was intended to carry both synchronous voice and asynchronous data services on the same transport.

The B_ISDN vision has been overtaken by the disruptive technology of the Internet. The ATM technology survives as a low-level layer in most DSL technologies.

Over fibre optic lines, the maximum Data bandwidth is 1.5 Megabits.

Categories: ITU-T recommendations

Results from FactBites:

Broadband ISDN - encyclopedia article about Broadband ISDN. (632 words)
	A method of routing traffic between an originator and a destination through switching centers, from local users or from other switching centers, whereby a continuous electrical circuit is established and maintained between the calling and called stations until it is released by one of those stations.
	Integrated Services Digital Network (ISDN) is a type of circuit switched telephone network system, designed to allow digital (as opposed to analog) transmission of voice and data over ordinary telephone copper wires, resulting in better quality and higher speeds, than available with analog systems.
	More broadly, ISDN is a set of protocols for establishing and breaking circuit switched connections, and for advanced call features for the end user.

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