11 Speech transmission functions of the half rate traffic channel
06.013GPPFull Rate Speech Processing FunctionsTS
The gross bit rate of the half rate speech traffic channel is 11,4 kbit/s. The algorithm for the half rate speech transcoder as well as the associated DTX functions are defined in GSM 06.02 [8], GSM 06.20 [9], GSM 06.21 [10], GSM 06.22 [11], GSM 06.41 [12] and GSM 06.42 [13].
Figure 1: Overview of audio processing functions
Annex A (informative):
Change Request History
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Change history |
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SMG No. |
TDoc. No. |
CR. No. |
Clause affected |
New version |
Subject/Comments |
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SMG#07 |
4.0.5 |
ETSI Publication |
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SMG#20 |
5.0.1 |
Release 1996 version |
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SMG#23 |
97-737 97-741 |
A004 A005 |
5.1.0 |
UAP61 comments Introduction of Homing for Full Rate Speech Transcoding |
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SMG#23 |
5.1.1 |
ETSI version change |
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SMG#27 |
6.0.0 |
Release 1997 version |
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SMG#28 |
P-99-136 |
A006 |
5 and Figure 1 |
7.0.0 |
Addition of mu-law (PCS 1900) |
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7.0.2 |
Update to Version 7.0.2 for Publication |
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SMG#31 |
8.0.0 |
Version for Release 1999 |
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8.0.1 |
Update to Version 8.0.1 for Publication |
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