Foreword

06.203GPPHalf rate speech transcodingTS

This European Telecommunication Standard (ETS) has been produced by the Special Mobile Group (SMG) Technical Committee of the European Telecommunications Standards Institute (ETSI).

This ETS specifies the speech codec to be used for the GSM half rate channel for the digital cellular telecommunications system. This ETS is part of ETSs series covering the half rate speech traffic channels as described below:

GSM 06.02 ETS 300 966: "Digital cellular telecommunications system; Half rate speech; Half rate speech processing functions".

GSM 06.06 ETS 300 967: "Digital cellular telecommunications system; Half rate speech; ANSI-C code for the GSM half rate speech codec".

GSM 06.07 ETS 300 968: "Digital cellular telecommunications system; Half rate speech; Test sequences for the GSM half rate speech codec".

GSM 06.20 ETS 300 969: "Digital cellular telecommunications system; Half rate speech; Half rate speech transcoding".

GSM 06.21 ETS 300 970: "Digital cellular telecommunications system; Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels".

GSM 06.22 ETS 300 971: "Digital cellular telecommunications system; Half rate speech; Comfort noise aspects for half rate speech traffic channels".

GSM 06.41 ETS 300 972: "Digital cellular telecommunications system; Half rate speech; Discontinuous Transmission (DTX) for half rate speech traffic channels".

GSM 06.42 ETS 300 973: "Digital cellular telecommunications system; Half rate speech; Voice Activity Detector (VAD) for half rate speech traffic channels".

Transposition dates

Date of adoption:

4 April 1997

Date of latest announcement of this ETS (doa):

31 August 1997

Date of latest publication of new National Standard
or endorsement of this ETS (dop/e):

28 February 1998

Date of withdrawal of any conflicting National Standard (dow):

28 February 1998

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