DIN EN 300009-2:2003-08
Действует
Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); Signalling Connection Control Part (SCCP) (connectionless and connection-oriented class 2) to support international interconnection - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 300009-2 V 1.4.1 (2002-04) as German standard)
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