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ČSN is a protected designation of Czech national technical standards.
WITHDRAWN published on 1.4.1996
Selected format:
WITHDRAWN published on 1.4.1996
Selected format:
WITHDRAWN published on 1.4.1996
Selected format:
WITHDRAWN published on 1.4.1996
Selected format:
WITHDRAWN published on 1.4.1996
Selected format:
WITHDRAWN published on 1.4.1996
Selected format:
WITHDRAWN published on 1.4.1996
Selected format:
WITHDRAWN published on 1.4.1996
Selected format:Integrated Services Digital Network (ISDN). Signalling system No. 7. ISDN User Part (ISUP) version 1 for the international interface. Part 1: Basic services [ITU-T Recommendations Q.761 to Q.764 (1993), modified]
Standard published on 1.3.1996
Selected format:Integrated Services Digital Network (ISDN) - Signalling System No.7 - ISDN User Part (ISUP) version 3 for the international interface - Part 1: Basic services
Standard published on 1.8.1999
Selected format:Latest update: 2026-01-15 (Number of items: 2 254 655)
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