Integrated Services Digital Network (ISDN). Explicit Call Transfer (ECT) supplementary service. Digital Subscriber Signalling System Number one (DSS1) protocol. Part 1: protocol specification
Edition 1999-03-01

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

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. one (DSS1) protocol - Data link layer - Part 7: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the general protocol (V1.4.5)
Edition 2005-09-01

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Signalling network layer for circuit-mode basic call control - Part 1: protocol specification
Edition 2000-04-01

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

Integrated Services Digital Network (ISDN) - Definition and usage of cause and location in Digital Subscriber Signalling System No. one (DSS1) and Signalling System No. 7 (SS7) ISDN User Part (ISUP) - (ITU-T Recommendation Q.850 (1998) with addendum modified) (V1.3.1)
Edition 2005-09-01

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

Resistance welding equipment. Secondary connecting cables with terminals connected to water-cooled lugs. Dimensions and characteristics
Edition 2001-05-15

Gas supply systems. Gas pressure regulating installations on service lines. Functional requirements
Edition 2000-07-15