PRETS 300 359 : AUG 93
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
INTEGRATED SERVICES DIGITAL NETWORK (ISDN)- COMPLETION OF CALLS TO BUSY SUBSCRIBERS (CCBS) SUPPLEMENTARY SERVICE, DIGITAL SUBSCRIBER SIGNALLING SYSTEM NO.ONE (DSS1) PROTOCOL
07-23-2013
01-12-2013
Specifies the stage three of the Completion of Calls to Busy Subscribers (CCBS) 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 No. one (DSS1). Does not specify the additional protocol requirements where the service is provided to the user via a telecommunications network that is not an ISDN.
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