European digital cellular telecommunications system - Half rate speech - Part 4: Comfort noise aspects for the half rate speech traffic channel; English version ETS 300581-4:1995
€56.17
European digital cellular telecommunications system - Half rate speech - Part 5: Discontinuous transmission (DTX) for half rate speech traffic channels; English version ETS 300581-5:1995
European digital cellular telecommunications system - Half rate speech - Part 6: Voice Activity Detector (VAD) for half rate speech traffic channels; English version ETS 300581-6:1995
€63.27
European digital cellular telecommunications system (Phase 2) - Principles of telecommunication services supported by a GSM Public Land Mobile Network (PLMN); English version ETS 300500:1996
€84.58
European digital cellular telecommunications system (Phase 2) - Procedure for call progress indications; English version ETS 300512:1996
€41.78
European digital cellular telecommunications system (Phase 2) - Closed User Group (CUG) supplementary services - Stage 2; English version ETS 300546:1996
European digital cellular telecommunications system (Phase 2) - In-band control of remote transcoders and rate adaptors for half rate traffic channels; English version ETS 300598:1995
€91.03
European digital cellular telecommunications system (Phase 2) - Bearer services supported by a GSM Public Land Mobile Network (PLMN); English version ETS 300501:1994
European digital cellular telecommunications system (Phase 2) - Subscriber Identity Modules (SIM), Functional characteristics; English version ETS 300509:1994
European digital cellular telecommunications system (Phase 2) - Operator determined barring; English version ETS 300513:1994
European digital cellular telecommunications system (Phase 2) - Signalling requirements relating to routeing of calls to mobile subscribers; English version ETS 300524:1994
European digital cellular telecommunications system (Phase 2) - Restoration procedures; English version ETS 300525:1994
European digital cellular telecommunications system (Phase 2) - GSM Public Land Mobile Network (PLMN) connection types; English version ETS 300528:1994
€128.22
European digital cellular telecommunications system (Phase 2) - Location registration procedures; English version ETS 300530:1994
European digital cellular telecommunications system (Phase 2) - Discontinuous Reception (DRX) in the GSM system; English version ETS 300531:1994
