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PRETS 300 581-7 : NOV 97
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2); HALF RATE SPEECH; ANSI-C CODE FOR THE GSM HALF RATE SPEECH CODEC (GSM 06.06 VERSION 4.2.0)
23-07-2013
12-01-2013
This part 7 of the ETS contains an electronic copy of the ANSI-C code for the GSM half rate codec, necessary for a bit exact implementation of the half rate speech transcoder (see part 2 of this ETS - GSM 06.20), Voice Activity Detection (see part 6 of this ETS - GSM 06.42), comfort noise (see part 4 of this ETS - GSM 06.22), Discontinuous Transmission (see part 5 of this ETS - GSM 06.41) and example solutions for substituting and muting lost frames (see part 3 of this ETS - GSM 06.21).
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