Digital cellular telecommunications system (Phase 2) - Call Waiting (CW) and Call Hold (HOLD) supplementary services - Stage 3 (Endorsement of the English version ETS 300567:1996-08 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Performance requirements on the mobile radio interface (Endorsement of the English version ETS 300561:1996-05 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Signalling interworking for supplementary services (Endorsement for the English version ETS 300606:1996-12 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Subscriber and equipment trace (Endorsement of the English version ETS 300627:1998-02 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2+) - Terminal Adaptation Functions (TAF) for services using asynchronous bearer capabilities (Endorsement of the English version ETS 300914:1998-07 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Technical realization of Short Message Service Cell Broadcast (SMSCB) (Endorsement of the English version ETS 300902:1999-02 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Mobile Application Part (MAP) specification (Endorsement of the English version ETS 300974:2000-12 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Call Barring (CB) supplementary services - Stage 3 (Endorsement of the English version ETS 300956:1998-07 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Mobile radio interface signalling layer 3 - General aspects (Endorsement of the English version ETS 300939:1997-12 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Voice Group Call Service (VGCS) - Stage 2 (Endorsement of the English version ETS 300933:1998-12 as German standard)
Edition 2001-06