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ETSI - European Telecommunication Standard Institute(ETSI) produces globally-applicable standards for information and telecommunication technologies (ICT) including land, mobile, radio, converged, broadcast and internet technologies.
Digital cellular telecommunications system (Phase 2+) (GSM); Performance characterization of the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.55 version 6.0.0 Release 1997)
Standard published on 22.1.1999
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Performance characterization of the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.55 version 7.0.0 Release 1998)
Standard published on 13.8.1999
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Performance characterization of the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.55 version 8.0.0 Release 1999)
Standard published on 28.6.2000
Selected format:Digital cellular telecommunications system (Phase 2+); SIM test specification (3GPP TS 11.17 version 8.0.0 Release 1999)
Standard published on 31.12.2002
Selected format:Digital cellular telecommunications system (Phase 2+); Subscriber Interface Module (SIM) test specification (3GPP TS 11.17 version 8.1.0 Release 1999)
Standard published on 31.3.2003
Selected format:Digital cellular telecommunications system (Phase 2+); Subscriber Identity Module (SIM) test specification (3GPP TS 11.17 version 8.2.0 Release 1999)
Standard published on 27.6.2005
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Base Station System (BSS) equipment specification; Radio aspects (GSM 11.21 version 5.0.0)
Standard published on 30.8.1997
Selected format:Digital cellular telecommunications system (Phase 2+); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 11.21 version 5.5.0 Release 1996)
Standard published on 5.8.2002
Selected format:Digital cellular telecommunications system (Phase 2+); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 11.21 version 6.0.0 Release 1997)
Standard published on 18.6.2002
Selected format:Digital cellular telecommunications system (Phase 2+); Base Station System (BSS) equipment specification; Radio aspects (3GPP TS 11.21 version 7.3.0 Release 1998)
Standard published on 30.11.2002
Selected format:Latest update: 2026-08-04 (Number of items: 2 291 378)
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