Digital cellular telecommunications system (Phase 2+) (GSM); Full rate speech; Discontinuous Transmission (DTX) for full rate speech traffic channels (GSM 06.31 version 6.0.1 Release 1997)

Norma vydána dne 4.6.1999

Digital cellular telecommunications system (Phase 2+) (GSM); Full rate speech; Discontinuous Transmission (DTX) for full rate speech traffic channels (GSM 06.31 version 7.0.1 Release 1998)

Norma vydána dne 12.1.2000

Digital cellular telecommunications system (Phase 2+) (GSM); Full rate speech; Discontinuous Transmission (DTX) for full rate speech traffic channels (GSM 06.31 version 8.0.1 Release 1999)

Norma vydána dne 15.11.2000

Digital cellular telecommunications system; Voice Activity Detector (VAD) (GSM 06.32 version 5.0.1)

Norma vydána dne 31.5.1997

Digital cellular telecommunications system (Phase 2+) (GSM); Full rate speech; Voice Activity Detector (VAD) for full rate speech traffic channels (GSM 06.32 version 5.0.35)

Norma vydána dne 30.4.1998

Digital cellular telecommunications system (Phase 2+) (GSM); Full rate speech; Voice Activity Detector (VAD) for full rate speech traffic channels (GSM 06.32 version 6.0.1 Release 1997)

Norma vydána dne 4.6.1999

Digital cellular telecommunications system (Phase 2+) (GSM); Full rate speech; Voice Activity Detector (VAD) for full rate speech traffic channels (GSM 06.32 version 7.0.1 Release 1998)

Norma vydána dne 13.1.2000

Digital cellular telecommunications system (Phase 2+) (GSM); Full rate speech; Voice Activity Detector (VAD) for full rate speech traffic channels (GSM 06.32 version 8.0.1 Release 1999)

Norma vydána dne 15.11.2000

Digital cellular telecommunications system; Half rate speech; Half rate speech processing functions (GSM 06.02 version 5.0.1)

Norma vydána dne 15.5.1997

Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Half rate speech processing functions (GSM 06.02 version 6.0.1 Release 1997)

Norma vydána dne 4.6.1999