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ETSI EN 301243-V4.0.1
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Digital cellular telecommunications system (Phase 2) (GSM); Enhanced Full Rate (EFR) speech processing functions; General description (GSM 06.51 version 4.0.1)
Standard published on 31.12.1997
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ETSI EN 301243-V4.1.1
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Digital cellular telecommunications system (Phase 2) (GSM); Enhanced Full Rate (EFR) speech processing functions; General description (GSM 06.51 version 4.1.1)
Standard published on 30.11.2000
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ETSI EN 301244-V4.0.1
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Digital cellular telecommunications system (Phase 2) (GSM); ANSI-C code for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.53 version 4.0.1)
Standard published on 15.1.1998
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ETSI EN 301245-V4.0.1
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Digital cellular telecommunications system (Phase 2) (GSM); Enhanced Full Rate (EFR) speech transcoding (GSM 06.60 version 4.0.1)
Standard published on 31.12.1997
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ETSI EN 301245-V4.1.1
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Digital cellular telecommunications system (Phase 2) (GSM); Enhanced Full Rate (EFR) speech transcoding (GSM 06.60 version 4.1.1)
Standard published on 24.8.2000
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ETSI EN 301246-V4.0.1
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Digital cellular telecommunications system (Phase 2) (GSM); Substitution and muting of lost frames for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.61 version 4.0.1)
Standard published on 31.12.1997
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ETSI EN 301247-V4.0.1
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Digital cellular telecommunications system (Phase 2) (GSM); Comfort noise aspects for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.62 version 4.0.1)
Standard published on 31.12.1997
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ETSI EN 301248-V4.0.1
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Digital cellular telecommunications system (Phase 2) (GSM); Discontinuous Transmission (DTX) for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.81 version 4.0.1)
Standard published on 31.12.1997
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ETSI EN 301248-V4.1.1
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Digital cellular telecommunications system (Phase 2) (GSM); Discontinuous Transmission (DTX) for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.81 version 4.1.1)
Standard published on 28.4.2000
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ETSI EN 301249-V4.0.1
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Digital cellular telecommunications system (Phase 2) (GSM); Voice Activity Detector (VAD) for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.82 version 4.0.1)
Standard published on 31.12.1997
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