DIN EN 300093-1:1999-12
Действует
Integrated Services Digital Network (ISDN); Calling Line Identification Restriction (CLIR) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300093-1 V 1.2.4 (1998-06) as German standard)
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