DIN EN 301004-1:1999-09
Действует
Broadband Integrated Services Digital Network (B-ISDN) - Signalling System No. 7; Message Transfer Part (MTP) level 3 functions and messages to support international interconnection - Part 1: Protocol specification [ITU-T Recommendation Q.2210 (1996), modified] (Endorsement of the English version EN 301004-1 V 1.1.3 (1998-02) as German standard)
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