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ČSN is a protected designation of Czech national technical standards.
Integrated Services Digital Network (ISDN) - Freephone (FPH) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification
Standard published on 1.7.1999
Selected format:Integrated Services Digital Network (ISDN) - Freephone (FPH) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user
Standard published on 1.4.1998
Selected format:Integrated Services Digital Network (ISDN) - Freephone (FPH) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user
Standard published on 1.7.1999
Selected format:Integrated Services Digital Network (ISDN) - Freephone (FPH) 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 1.3.1999
Selected format:Integrated Services Digital Network (ISDN) - Freephone (FPH) 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 1.1.2000
Selected format:Integrated Services Digital Network (ISDN) - Freephone (FPH) 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 1.4.1998
Selected format:Integrated Services Digital Network (ISDN) - Freephone (FPH) 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) - Freephone (FPH) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network
Standard published on 1.3.1999
Selected format:Integrated Services Digital Network (ISDN) - Freephone (FPH) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network
Standard published on 1.1.2000
Selected format:Integrated Service Digital Network (ISDN) - User-to-user Signalling (UUS) supplementary service - Digital Subscriber Signalling System No. one (DDS1) protocol - Part 1: Protocol specification
Standard published on 1.11.1998
Selected format:Latest update: 2025-09-03 (Number of items: 2 231 121)
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