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ČSN is a protected designation of Czech national technical standards.
Integrated Services Digital Network (ISDN) - Connected Line Identification Restriction (COLR) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user
Standard published on 1.4.1998
Selected format:Integrated Services Digital Network (ISDN) - Connected Line Identification Restriction (COLR) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user
Standard published on 1.7.1999
Selected format:Integrated Services Digital Network (ISDN). Connected Line Identification Restriction (COLR) supplementary service. Digital Subscriber Signalling System No. one (DSS1) protocol. Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network
Standard published on 1.12.1997
Selected format:Integrated Services Digital Network (ISDN). Connected Line Identification Restriction (COLR) supplementary service. Digital Subscriber Signalling System No. one (DSS1) protocol. Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network
Standard published on 1.7.1999
Selected format:Integrated Services Digital Network (ISDN) - Connected Line Identification Restriction (COLR) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation for Testing (PIXIT) proforma specification for the network
Standard published on 1.4.1998
Selected format:Integrated Services Digital Network (ISDN) - Connected Line Identification Restriction (COLR) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation for Testing (PIXIT) proforma specification for the network
Standard published on 1.7.1999
Selected format:Digitální síť integrovaných služeb (ISDN) - Zamezení identifikace propojené linky (COLR) - Doplňková služba - Protokol digitálního účastnického signalizačního systému číslo jedna (DSS1) - Část 6: Abstraktní testovací sestava (ATS) a specifikace dílčí proformy dodatečné informace o implementaci protokolu pro testování (PIXIT) síťové části (Norma k přímému použití jako ČSN).
Standard published on 1.8.2000
Selected format:Integrated Services Digital Network (ISDN). User-network interface layer 3. Specifications for basic call control
Standard published on 1.6.1995
Selected format:Integrated Services Digital Network (ISDN). User-network interface layer 3. Specifications for basic call control. Specification Description Language (SDL) diagrams
Standard published on 1.6.1995
Selected format:Integrated Services Digital Network (ISDN). Support of CCITT Recommendation X.21, X.21 bis a X.20 bis based Data Terminal Equipments (DTEs) by an ISDN. Synchronous and asynchronous terminal adaption functions
Standard published on 1.6.1995
Selected format:Latest update: 2026-01-17 (Number of items: 2 256 397)
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