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Standards [CURRENT]

OENORM EN 300356-19 V 4.2.1
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 2001-11-01
Original language English
Price from 21.20 €
Table of contents