Digitale Enhanced Cordless Telecommuncation (DECT) - Date Service Profile (DSP) - Isochronous data bearer services with closed user groups (service type D, mobilityclass 1) (Endorsement of the English version EN 301239 V 1.1.3 (1998-06) as German standard)
Edition 1999-07

Digital Enhanced Cordless Telecommunications (DECT) - Cordless Terminal Mobility (CTM) - CTM Access Profile (CAP) (Endorsement of the English version EN 300824 V 1.3.1 (2001-08) as German Standard)
Edition 2002-11

Digital cellular telecommunications system (Phase 2+) (GSM) - Adaptive Multi-Rate (AMR); Speech processing functions - General description (GSM 06.71 version 7.0.2 Release 1998) (Endorsement of the English version EN 301703 V 7.0.2 (1999-12) as German standard)
Edition 2003-08

Digital cellular telecommunications system (Phase 2+) - Adaptive Multi-Rate (AMR) speech transcoding (GSM 06.90 version 7.2.1 Release 1998) (Endorsement of the English version EN 301704 V7.2.1 (2000-04) as German standard)
Edition 2004-03

Digital cellular telecommunications system (Phase 2+) (GSM) - Test sequences for the Adaptive Multi-Rate (AMR) speech codec (GSM 06.74 version 7.0.3 Release 1998) (Endorsement of the English version EN 301713 V 7.0.3 (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

Digital cellular telecommunications system (Phase 2) - Full rate speech - Part 3: Substitution and muting of lost frames for full rate speech channels (Endorsement of the English version ETS 300580-3:1998-03 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Full rate speech - Part 6: Voice Activity Detection (VAD) for full rate speech traffic channels (Endorsement of English version ETS 300580-6:1998-04 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2+) (GSM) - User-to-User Signalling (UUS) - Service description, Stage 1 (GSM 02.87 version 7.1.2 Release 1998) (Endorsement of the English version EN 301702 V 7.1.2 (1999-12) as German standard)
Edition 2003-08

Digital cellular telecommunications system (Phase 2+) (GSM) - Comfort noise aspects for Adaptive Multi-Rate (AMR) speech traffic channels (GSM 06.92 version 7.1.1 Release 1998) (Endorsement of the English version EN 301706 V 7.1.1 (1999-12) as German standard)
Edition 2003-08