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

European digital cellular telecommunications system (Phase 2) - Part 4: Comfort noise aspects for full rate speech traffic channels; English version ETS 300580-4:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - Part 5: Discontinuous Transmission (DTX) for full rate speech traffic channels; English version ETS 300580-5:1994
Edition 1995-01

Digital cellular telecommunications system (Phase 2) - Substitution and muting of lost frames for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.61 version 4.0.1) (Endorsement of the English version EN 301246 V 4.0.1 (1997-12) as German standard)
Edition 2003-11

Digital cellular telecommunications system (Phase 2) - Discontinuous Transmission (DTX) for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.81 version 4.1.1) (Endorsement of the English version EN 301248 V4.1.1 (2000-04) as German standard)
Edition 2004-12

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

Digital cellular telecommunications system (Phase 2) - Comfort noise aspects for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.62 version 4.0.1) (Endorsement of the English version EN 301247 V 4.0.1 (1997-12) as German standard)
Edition 2003-11

Digital cellular telecommunications system (Phase 2+) (GSM) - Voice Activity Detection (VAD) for Adaptive Multi-Rate (AMR) speech traffic channels - General description (GSM 06.94 version 7.1.1 Release 1998) (Endorsement of the English version EN 301708 V 7.1.1 (1999-12) as German standard)
Edition 2003-08

Digital cellular telecommunications system (Phase 2) - Voice Activity Detector (VAD) for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.82 version 4.0.1) (Endorsement of the English version EN 301249 V 4.0.1 (1997-12) as German standard)
Edition 2003-11

Digital cellular telecommunications system (Phase 2+) - Substitution and muting of lost frames for Adaptive Multi Rate (AMR) speech traffic channels (GSM 06.91 version 7.1.1 Release 1998) (Endorsement of the English version EN 301705 V7.1.1 (2000-04) as German standard)
Edition 2004-03