History of ISDN

	Revision 5 . . (edit) November 10, 2001 7:43 am by The Anome
	Revision 2 . . (edit) November 10, 2001 6:31 am by The Anome

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Difference (from prior major revision) (minor diff)

Changed: 3c3

There are two kinds of access to ISDN: 'Basic Rate' consisting of two 64 kbps digital data channels and a digital signalling channel, and 'Primary Rate' consisting of an E1 (or T-1 in the United States) containing a grater number of channels.

There are two kinds of access to ISDN: 'Basic Rate' consisting of two 64 kbps digital data channels and a digital signalling channel, and 'Primary Rate' consisting of an E1 (or T-1 in the United States) containing a greater number of channels.

Changed: 9c9

ISDN is nowadays mostly used as an alternative to analog modems, and the 'smart services' envisaged as being delivered over ISDN are now delivered over the Internet instead.

ISDN is nowadays mostly used as an alternative to analog modems, most commonly for Internet access. The 'smart services' envisaged as being delivered over ISDN are now delivered over the Internet instead.

Added: 14a15,18

External references: * http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/isdn.htm * http://www.alumni.caltech.edu/~dank/isdn/