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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WITHDRAWN published on 1.4.1996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WITHDRAWN published on 1.4.1996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WITHDRAWN published on 1.4.1996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WITHDRAWN published on 1.4.1996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WITHDRAWN published on 1.4.1996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WITHDRAWN published on 1.4.1996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: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:Digitální síť integrovaných služeb (ISDN) - Signalizační systém číslo 7 (SS7) - Uživatelská část ISDN (ISUP) verze 4 pro mezinárodní rozhraní - Část 1: Základní služby (mod ITU-T Q.761 až Q.764: 1999) (Norma k přímému použití jako ČSN).
Standard published on 1.3.2002
Selected format:Integrated Services Digital Network (ISDN). Signalling system No. 7. ISDN User Part (ISUP) version 2 for the international interface. Part 2: ISDN supplementary services [ITU-T Recommendation Q.730 (1993), modified]
Standard published on 1.3.1996
Selected format:Latest update: 2025-09-10 (Number of items: 2 232 034)
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