Digital cellular telecommunications system (Phase 2+) - Substitution and muting of lost frames for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.61 version 8.0.1 Release 1999)
Edition 2001-02-01

Digital cellular telecommunications system (Phase 2+) - Comfort noise aspects for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.62 version 8.0.1 Release 1999)
Edition 2001-02-01

Digital cellular telecommunications system (Phase 2+) - Discontinuous Transmission (DTX) for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.81 version 8.0.1 Release 1999)
Edition 2001-02-01

Digital cellular telecommunications system (Phase 2+) - Voice Activity Detector (VAD) for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.82 version 8.0.1 Release 1999)
Edition 2001-02-01

Digital cellular telecommunications system (Phase 2+) - Transmission planning aspects of the speech service in the GSM Public Land Mobile Network (PLMN) system (GSM 03.50 version 8.1.1 Release 1999)
Edition 2001-02-01

Digital cellular telecommunications system (Phase 2+) - Full rate speech - Processing functions (GSM 06.01 version 8.0.1 Release 1999)
Edition 2001-02-01

Digital cellular telecommunications system (Phase 2+) - Full rate speech - Transcoding (GSM 06.10 version 8.1.1 Release 1999) (incl. CD-ROM!!!)
Edition 2001-02-01

Digital cellular telecommunications system (Phase 2+) - Full rate speech - Substitution and muting of lost frames for full rate speech channels (GSM 06.11 version 8.0.1 Release 1999)
Edition 2001-02-01

Digital cellular telecommunications system (Phase 2+) - Full rate speech - Comfort noise aspect for full rate speech traffic channels (GSM 06.12 version 8.0.1 Release 1999)
Edition 2001-02-01

Digital cellular telecommunications system (Phase 2+) - Full rate speech - Discontinuous Transmission (DTX) for full rate speech traffic channels (GSM 06.31 version 8.0.1 Release 1999)
Edition 2001-02-01