DS/EN 300356-20 V3.2.8
Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 20: Completion of Calls on No Reply (CCNR) supplementary service
inactive
| Organization: | DS |
| Publication Date: | 30 March 1999 |
| Status: | inactive |
| ICS Code (Integrated Services Digital Network (ISDN)): | 33.080 |
scope:
The present document specifies the stage three of the Completion of Calls on No Reply (CCNR) supplementary service for the ISDN as provided by the European public telecommunications operators by means of the Signalling System No.7 protocol. Stage three identifies the protocol procedures and switching functions needed to support a telecommunication service (see CCITT Recommendation I.130 [3]). The present document specifies the additional requirements where the service is provided to the user via an intermediate ISDN. The present document does not specify the additional requirements where the service is provided to the user via a telecommunications network that is not an ISDN.
Document History
November 26, 2001
Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 20: Completion of Calls on No Reply (CCNR) supplementary service
The present document specifies the stage three of the Completion of Calls on No Reply (CCNR) supplementary service for the ISDN as provided by the European public telecommunications operators by...
DS/EN 300356-20 V3.2.8
March 30, 1999
Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 20: Completion of Calls on No Reply (CCNR) supplementary service
The present document specifies the stage three of the Completion of Calls on No Reply (CCNR) supplementary service for the ISDN as provided by the European public telecommunications operators by...
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