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ÖNORM EN 301070-1 V 1.2.2:1999-01

Действует
Integrated Services Digital Network (ISDN) - Signalling System No.7 - ISDN User Part (ISUP) version 3 interactions with the Intelligent Network Application Part (INAP) - Part 1: Protocol specification [ITU-T Recommendation Q.1600 (1997), modified]