Digital cellular telecommunications system (Phase 2) - Call Forwarding (CF) supplementary services - Stage 2 (Endorsement of the English version ETS 300543:1997-01 as German standard)
Edition 2001-04

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) - Closed User Group (CUG) supplementary services - Stage 3 (Endorsement of the English version ETS 300569:1996-11 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Multiplexing and multiple access on the radio path (Endorsement of the English version ETS 300574:1996-10 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Call Forwarding (CF) supplementary services - Stage 3 (Endorsement of the English version ETS 300566:1996-08 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Use of Data Terminal Equipment-Data Circuit terminating Equipment (DTE-DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS) (Endorsement of the English version ETS 300585:1997-04 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Subscriber data management - Stage 2 (Endorsement of the English version ETS 300629:1996-11 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Attachment requirements for Global System for Mobile communications (GSM) - Mobile stations in the DCS-1800-band and additional GSM 800 band; Telephony (GSM 13.02 version 4.0.1) (Endorsement of the English version EN 301420 V 4.0.1 (1999-12) as German standard)
Edition 2003-04

Digital cellular telecommunications system (Phase 2+) (GSM) - Support of Mobile Number Portability (MNP) - Technical Realisation; Stage 2 (GSM 03.66 version 7.3.1 Release 1998) (Endorsement of the English version EN 301716 V 7.3.1 (2000-10) as German standard)
Edition 2003-08

Digital cellular telecommunications system (Phase 2+) - GSM Cordless Telephony System (CTS), Phase 1 - Service description - Stage 1 (GSM 02.56 version 8.0.1 Release 1999) (Endorsement of the English version EN 302403 V8.0.1 (2000-10) as German standard)
Edition 2004-03