Digital Access Signalling System 1: Difference between revisions
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Latest revision as of 16:06, 24 February 2024
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Digital Access Signalling System 1 (DASS1) is a proprietary protocol defined by British Telecom to provide ISDN services in the United Kingdom.<ref>Template:Cite web</ref> It is now obsolete, having been replaced by DASS2. This too will become obsolete over the coming years as Q.931, a European standard, becomes widely adopted in the EU.