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SSH EN 301 244 V4.0.1:1998

Digital cellular telecommunications system (Phase 2); ANSI-C code for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.53 version 4.0.1)

May 22, 2025

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60.60     May 22, 2025

DPS

DPS/KT 10

European Norm

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Scope

This EN contains an electronic copy of the ANSI-C code for the GSM Enhanced Full Rate codec. The ANSI-C code is necessary for a bit exact implementation of the Enhanced Full Rate speech transcoder (GSM 06.60 (EN 301 245) [3]), Voice Activity Detection (GSM 06.82 (EN 301 249) [7]), comfort noise (GSM 06.62 (EN 301 247) [5]), Discontinuous Transmission (GSM 06.81 (EN 301 248) [6]) and example solutions for substituting and muting of lost frames (GSM 06.61 (EN 301 246) [4]).

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PUBLISHED
SSH EN 301 244 V4.0.1:1998
60.60 Standard published
May 22, 2025

Related project

Adopted from EN 301 244 V4.0.1 (1998-01)