Integrated Services Digital Network (ISDN). Telephony 7 kHz and videotelephony teleservices. Digital subscriber signalling system no One (DSS1) protocol. Part 1: protocol specification
Edition 1996-11-01

Telecommunications - Integrated services digital network (ISDN) - Digital subscriber signalling system N o one (DSS1) protocol - Basic call applications enhancement at the "B" service entry point for virtual private network (VPN) applications - Part 1: protocol specification
Edition 2002-04-01

Broadband integrated services digital network (B-ISDN) - Digital subscriber signalling system No. two (DSS2) protocol - B-ISDN user-network interface layer 3 specification for basic call/bearer control - Part 2: protocol implementation conformance statement (PICS) proforma specification (V1.3.1)
Edition 2014-12-19

Broadband integrated services digital network (B-ISDN) and Broadband private integrated services network (B-PISN) - Digital subscriber signalling system No. two (DSS2) and Broadband QSIG (B-QSIG) protocol - Call control specification in a separated call and bearer control environment - Part 4: abstract test suite (ATS) and partial protocol implementation extra information for testing (PIXIT) proforma specification (V1.1.1)
Edition 2014-04-05

Integrated services digital network (ISDN) - Digital subscriber signalling system No. 1 (DSS1) and signalling system No. 7 (SS7) protocols - Call forwarding on not reachable (CFNRc) supplementary service for cordless terminal mobility (CTM) phase - Part 3: test suite structure and test purpose (TSS&TP) specification for the user (V1.1.1)
Edition 2014-03-19

Broadband integrated services digital network (B-ISDN) and Broadband private integrated services network (B-PISN) - Digital subscriber signalling system No. two (DSS2) and Broadband inter-exchange signalling (B-QSIG) and Signalling system No.7 (SS7) - Prenegotiation - Part 4: abstract test suite (ATS) and partial protocol implementation extra information for testing (PIXIT) proforma specification (V1.1.1)
Edition 2014-03-26