ETSI EN 300 356-18

Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 18: Completion of Calls to Busy Subscriber (CCBS) supplementary service [ITU-T Recommendation Q.733, clause 3 (1997) modified] Edition: 4.1.2
European Telecommunications Standards Institute / 01-Jul-2001 / 9 pages

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To create ETSI endorsement documents to ITU ISUP 2000.

This product replaces:ETSI EN 300 356-18 - Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 18: Completion of Calls to Busy Subscriber (CCBS) supplementary service [ITU-T Recommendation Q.733, clause 3 (1997), modified]
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ETSI EN 300 356-18
ETSI EN 300 356-18