Integrated Services Digital Network (ISDN) - Completion of Calls to Busy Subscriber (CCBS) supplementary service - Functional capabilities and information flows; English version ETS 300358:1995
Edition 1996-04

Integrated Services Digital Network (ISDN) - Access digital section for ISDN basic access; English version ETS 300297:1995
Edition 1995-12

Intelligent transport systems - ITS station security services for secure session establishment and authentication between trusted devices (ISO 21177:2024); English version EN ISO 21177:2024
Edition 2024-06

Industrial communication networks - Fieldbus specifications - Part 3-11: Data-link layer service definition - Type 11 elements (IEC 61158-3-11:2007); English version EN 61158-3-11:2008, only on CD-ROM
Edition 2008-09

European digital cellular telecommunications system (Phase 2) - Call Barring (CB) supplementary services - Stage 2; English version ETS 300548:1995
Edition 1995-09

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Data link layer - Part 2: General protocol specification [ITU-T Q.921 (1993), modified]; English version ETS 300402-2:1995
Edition 1996-06

European digital cellular telecommunications system (Phase 2) - Base Station Controller - Base Transceiver Station (BSC-BTS) interface - Layer 2 specification; English version ETS 300595:1994
Edition 1995-02

Industrial communication networks - Fieldbus specifications - Part 3-3: Data-link layer service definition - Type 3 elements (IEC 61158-3-3:2014); English version EN 61158-3-3:2014, only on CD-ROM
Edition 2015-07

Agricultural machinery - Front loaders - Safety; German version EN 12525:2000+A2:2010
Edition 2011-02

Integrated Services Digital Network (ISDN); user-network interface data link layer specification; application of CCITT recommendations Q.920/I.440 and Q.921/I.441; english version ETS 300125:1991
Edition 1992-05