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Digital Access Signalling System

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This is an old revision of this page, as edited by R'n'B (talk | contribs) at 22:21, 1 August 2010 (Fix links to disambiguation page Proprietary). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

The Digital Access Signalling System (DASS) is the United Kingdom proprietary standard created by British Telecom to provide ISDN services in the United Kingdom. The first incarnation DASS1 is now obsolete and has been replaced by DASS II. This itself will become obsolete over the coming years as Q.931, a European standard becomes widely adopted in