ETSI EN 300 356-19

Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 19: Three-Party (3PTY) supplementary service [ITU-T Recommendation Q.734, clause 2 (1996) and implementors guide (1998) modified] Edition: 4.2.1
European Telecommunications Standards Institute / 01-Jul-2001 / 8 pages

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This product replaces:ETSI EN 300 356-19 - Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 19: Three-Party (3PTY) supplementary service [ITU-T Recommendation Q.734, clause 2 (1996), modified]
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ETSI EN 300 356-19
ETSI EN 300 356-19