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ETSI EN 300 195-1

M00001194

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ETSI EN 300 195-1 Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Supplementary service interactions; Part 1: Protocol specification

standard by European Telecommunications Standards Institute, 04/01/2002

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The present document specifies the stage three of the supplementary service interactions for the pan-EuropeanIntegrated Services Digital Network (ISDN) as provided by European public telecommunications operators at theT reference point or coincident S and T reference point (as defined in ITU-T Recommendation I.411 [32]) by means ofthe Digital Subscriber Signalling System No. one (DSS1) protocol. Stage three identifies the protocol procedures andswitching functions needed to support a telecommunication service (see ITU-T Recommendation I.130 [29]).