Content for TS 48.060 Word version: 16.0.0
1 Scope Word‑p. 5
When 64 kbit/s traffic channels are used on the Abis interface, the speech shall be coded according to CCITT Recommendation G.711 and the data rate adaptation shall be as specified in TS 44.021 and TS 48.020.
In the case where 16 kbit/s traffic channels are used for full rate speech, enhanced full rate speech, Adaptive Multi-Rate speech, Adaptive Multi-Rate Wideband speech or full rate data service, then the present document shall apply for frame structure and for control of remote transcoders and additional rate adaptors.
For Adaptive Multi-Rate speech the present document specifies the 16 kBit/s submultiplexing, both for the full and the half rate traffic channels (TCH/AFS, TCH/AHS, TCH/WFS and O-TCH/WHS). The specification for 8 kBit/s submultiplexing is given in TS 48.061, both for the full and the half rate traffic channels (TCH/AFS and TCH/AHS).
Additionally, the present document specifies the 32 kBit/s submultiplexing for Adaptive Multi-Rate Wideband speech. However it reuses the frame structure of the 16 kBit/s submultiplexing for Adaptive Multi-Rate speech.
The use and general aspects of the Abis interface are given in TS 48.051.
2 References Word‑p. 6
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 44.006: "Mobile Station - Base Station System (MS - BSS) interface Data Link (DL) layer specification".
[3]
TS 44.021: "Rate adaption on the Mobile Station
[4] Void.
[5]
TS 46.010: "Full rate speech; Transcoding".
[6]
TS 46.011: "Full rate speech; Substitution and muting of lost frames for full rate speech channels".
[7]
TS 46.012: "Full rate speech; Comfort noise aspect for full rate speech traffic channels".
[8]
TS 46.031: "Full rate speech; Discontinuous Transmission (DTX) for full rate speech traffic channels".
[9]
TS 46.032: "Voice Activity Detector (VAD)".
[10]
TS 48.020: "Rate adaption on the Base Station System Mobile services Switching Centre (BSS MSC) interface".
[11]
TS 48.051: "Base Station Controller Base Transceiver Station (BSC BTS) interface; General aspects".
[12]
TS 48.054: "Base Station Controller - Base Transceiver Station (BSC - BTS) interface Layer 1 structure of physical circuits".
[13]
TS 48.058: "Base Station Controller Base Transceiver Station (BSC BTS) interface; Layer 3 specification".
[14]
GSM TS 12.21: "Network Management (NM) procedures and message on the A-bis interface".
[15]
CCITT Recommendation G.711: "Pulse code modulation (PCM) of voice frequencies".
[16]
CCITT Recommendation I.460: "Multiplexing, rate adaption and support of existing interfaces".
[17]
CCITT Recommendation V.110: "Support of data terminal equipments (DTEs) with V-Series interfaces by an integrated services digital network".
[18] Void.
[19]
TS 46.060: "Enhanced Full rate speech transcoding".
[20]
TS 46.061: "Substitution and muting of lost frames for Enhanced Full rate speech channels".
[21]
TS 46.062: "Comfort noise aspect for Enhanced Full rate speech traffic channels".
[22]
TS 46.081: "Discontinuous Transmission (DTX) for Enhanced Full rate speech traffic channel".
[23]
TS 46.082: "Voice Activity Detection (VAD)".
[24] Void.
[25]
TS 26.090: "Adaptive Multi-Rate speech transcoding".
[26]
TS 26.091: "Substitution and muting of lost frames for Adaptive Multi-Rate speech traffic channels".
[27]
TS 26.092: "Comfort noise aspect for Adaptive Multi-Rate speech traffic channels".
[28]
TS 26.093: "Discontinuous Transmission (DTX) for Adaptive Multi-Rate speech traffic channels".
[29]
TS 26.094: "Voice Activity Detection (VAD) for Adaptive Multi-Rate speech traffic channels ".
[30]
TS 45.009: "Link Adaptation".
[31]
TS 48.061: "Inband control of remote transcoders and rate adaptors (half rate)".
[32]
TS 28.062: "Inband Tandem Free Operation (TFO) of Speech Codecs".
[33]
TS 26.171: "Digital cellular telecommunications system; Adaptive Multi-Rate Wideband speech processing functions, General Description."
[34]
TS 26.190: "Digital cellular telecommunications system; Adaptive Multi-Rate Wideband speech transcoding".
[35]
TS 26.191: "Digital cellular telecommunications system; Substitution and muting of lost frames for Adaptive Multi-Rate Wideband speech traffic channels".
[36]
TS 26.192: "Digital cellular telecommunications system; Comfort noise aspect for Adaptive Multi-Rate Wideband speech traffic channels".
[37]
TS 26.193: "Digital cellular telecommunications system; Discontinuous Transmission (DTX) for Adaptive Multi-Rate Wideband speech traffic channels".
[38]
TS 26.194: "Digital cellular telecommunications system; Voice Activity Detection (VAD) for Adaptive Multi-Rate Wideband speech traffic channels ".
3 Abbreviations Word‑p. 7
Abbreviations used in the present document are listed in TR 21.905. Additionally:
AMR
Adaptive Multi-Rate
AMR-WB
Adaptive Multi-Rate Wideband
CMC
Codec_Mode_Command
CMI
Codec_Mode_Indication
CMR
Codec_Mode_Request
Onset
Speech Onset Frame Classification
PAB
Phase Alignment Bit
PAC
Phase Alignment Command
RATSCCH
Robust AMR Traffic Synchronised Control CHannel
RIF
Request or Indication Flag
TAC
Time Alignment Command
TAE
Time Alignment Extension
TFO
Tandem Free Operation
TFOE
TFO Enable
UFE
Uplink Frame Error
