DIN EN 300403-6:2002-12
Действует
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control - Part 6: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 300403-6 V 1.2.2 (2000-02) as German Standard)
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