DIN EN 300009-1:2001-09
Действует
Integrated Services Digital Network (ISDN) - Signalling system No. 7; Signalling Connection Control Part (SCCP) (connectionless and connection-oriented) to support international interconnection - Part 1: Protocol specification (ITU-T-Recommendation Q.711 to Q.716, modified); (Endorsement of the English version ETS 300009-1 V 1.4.3 (2001-02) as German Standard)
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