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NEN EN 300188-1 : 1998
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INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - THREE PARTY (3PTY) SUPPLEMENTARY SERVICE - DIGITAL SUBSCRIBER SIGNALLING SYSTEM NO. ONE (DSS1) PROTOCOL - PART 1: PROTOCOL SPECIFICATION
12-01-2013
Describes the stage three of the Three Party (3PTY) supplementary service for the pan-European Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators at the T reference point or coincident S and T reference point by means of the Digital Subscriber Signalling System No. one (DSS1) protocol.
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