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TS 48.061RAN6
In-band Control of Remote Transcoders and Rate Adaptors
for Half Rate Traffic Channels

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V6.0.0  2005/02  44 p.
V5.0.0  2002/05  44 p.
V4.1.1  2002/03  42 p.
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GSM Rel-97 v6.0.1  1998/11  34 p.
GSM Rel-96 v5.0.1  1996/11  36 p.
GSM Phase-2 v4.0.2  1995/11  39 p.

Rapporteur:  Mr. Andersen, Niels Peter Skov

The present document describes the protocol between the Base Transceiver Station (BTS) and the remote Transcoder/Rate Adaption Unit (TRAU) for speech and data on half rate traffic channel (TCH/H).
For Half Rate speech and half rate data the protocol is specified for 8 kbit/s and 16 kbit/s submultiplexing scheme.
For Adaptive Multi-Rate speech the present document specifies the 8 kBit/s submultiplexing, both for the full and the half rate traffic channels (TCH/AFS and TCH/AHS). The specification for 16 kBit/s submultiplexing is given in Rec TS 48.060, both for the full and the half rate traffic channels (TCH/AFS and TCH/AHS).
The present document should be considered together with the 3GPP TS 46 series, TS 44.021 (Rate Adaption on the MS-BSS Interface) and TS 48.020 (Rate Adaption on the BTS/MSC Interface).

full Table of Contents for  TS 48.061  Word version:   15.0.0

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1  ScopeWord-p. 5
2  References
3  Definitions and abbreviationsWord-p. 6
4  General approach
5  Frame structureWord-p. 9
5.1  16 kbit/s submultiplexing
5.2  8 kbit/s submultiplexingWord-p. 15
6  ProceduresWord-p. 26
6.1  Remote Control of Transcoders and Rate Adaptors
6.2  Resource Allocation
6.3  Resource Release
6.4  In Call ModificationWord-p. 27
6.5  Transfer of Idle Frames, Handling of missing data
6.6  Procedures for Speech Frames
6.7  Procedures for Data Frames
6.8  Frame Synchronization
6.9  Correction/detection of bit errors
6.10  Procedures for Operation & MaintenanceUp
A  Change HistoryWord-p. 42

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