DIN EN 300646-1:2000-12
Действует
Integrated Services Digital Network (ISDN) - Signalling System No. 7 - Digital cellular telecommunications system (phase 2); Application of ISDN User Part (ISUP) version 2 for the ISDN - Public Land Mobile Network (PLMN) signalling interface - Part 1: Protocol specification (GSM 09.12 version 4.2.2) (Endorsement of the English version EN 300646-1 V 4.2.2 (1999-05) as German standard)
— 1 стр.
