ETSI TS 148 060 V13.0.0 (2016-01)

Digital cellular telecommunications system (Phase 2+); In-band control of remote transcoders and rate adaptors for full rate traffic channels (3GPP TS 48.060 version 13.0.0 Release 13)

RTS/TSGG-0148060vd00

General Information

• Status: Published
• Publication Date: 21-Jan-2016
• Technical Committee: 3GPP GERAN 1 - Radio aspects
• Current Stage: 12 - Completion
• Due Date: 19-Jan-2016
• Completion Date: 22-Jan-2016

Standards Content (Sample)

ETSI TS 1148 060 V13.0.0 (201616-01)

TECHNICAL SPECIFICATIONION
Digital cellular telecocommunications system (Phahase 2+);
In-band control of remremote transcoders and rate a adaptors
for fullull rate traffic channels
(3GPP TS 48.0.060 version 13.0.0 Release 13 13)

R
GLOBAL SYSTTEME FOR
MOBILE COMMUUNNICATIONS
3GPP TS 48.060 version 13.0.0 Release 13 1 ETSI TS 148 060 V13.0.0 (2016-01)

Reference
RTS/TSGG-0148060vd00
Keywords
GSM
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ETSI
3GPP TS 48.060 version 13.0.0 Release 13 2 ETSI TS 148 060 V13.0.0 (2016-01)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
http://webapp.etsi.org/key/queryform.asp.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
3GPP TS 48.060 version 13.0.0 Release 13 3 ETSI TS 148 060 V13.0.0 (2016-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 5
1 Scope . 5
2 References . 6
3 Abbreviations . 7
4 General Approach. 8
5 Frame Structure . 10
5.1 Frames for Speech Services. 10
5.1.1 Frames for Full Rate and Enhanced Full Rate Speech . 10
5.1.2 Frames for Adaptive Multi-Rate Speech (AMR-NB) . 11
5.1.3 Frames for Adaptive Multi-Rate Wideband Speech (AMR-WB) (16 kbit/s) . 11
5.1.4 Frames for Adaptive Multi-Rate Wideband Speech (AMR-WB) (32 kbit/s) . 11
5.1.5 Frames for Speech Codec Configuration Exchange . 12
5.2 O&M Frames . 13
5.3 Data Frames . 14
5.3.1 Data Frame (for Synchronisation) . 14
5.3.2 Extended data frame (E-TRAU : data transport) . 15
5.4 Idle Speech Frames . 16
5.5 Coding . 16
5.5.1 Coding of Frames for Speech Services . 17
5.5.1.1 Coding of Frames for Full Rate and Enhanced Full Rate Speech . 17
5.5.1.1.1 Coding of Control bits (C-bits) . 17
5.5.1.1.2 Coding of Data Bits (D-bits) . 18
5.5.1.1.3 Time Alignment Bits (T1…T4) . 18
5.5.1.2 Coding of Frames for Adaptive Multi-Rate Speech (AMR-NB) . 19
5.5.1.2.1 Coding of Control bits (C-bits) . 19
5.5.1.2.2 Coding of Data bits (D-bits) . 21
5.5.1.2.3 Time Alignment Bits (T1…T4) . 24
5.5.1.3 Coding of Frames for Adaptive Multi-Rate Wide Band Speech (AMR-WB) for 16kbit/s and
32kbit/s sub-multiplexing . 25
5.5.1.3.1 Coding of Control bits (C-bits) . 25
5.5.1.3.2 Coding of Data bits (D-bits) . 26
5.5.1.3.3 Time Alignment Bits (T1a…T4a) . 29
5.5.1.4 void . 29
5.5.1.5 Coding of Configuration Frames . 29
5.5.2 Coding of O&M Frames . 29
5.5.3 Coding of Data Frames . 30
5.5.4 Coding of Extended Data Frames . 30
5.5.5 Coding of Idle Speech Frames . 31
5.6 Order of Bit Transmission . 31
6 Procedures . 31
6.1 Remote Control of Transcoders and Rate Adaptors . 31
6.2 Resource Allocation . 32
6.3 Resource Release . 32
6.4 In Call Modification . 33
6.5 Transfer of Idle Frames, Handling of Missing Data . 33
6.5.1 In Full Rate data case . 33
6.5.2 In Full Rate speech case . 33
6.5.3 In Enhanced Full Rate speech case . 33
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6.5.4 In Adaptive Multi-Rate speech case . 33
6.5.5 In Adaptive Multi-Rate Wideband speech case . 33
6.6 Procedures for Speech Services . 34
6.6.1 Time Alignment of Speech Service Frames . 34
6.6.1.1 Initial Time Alignment State . 34
6.6.1.2 The Static Time Alignment State . 35
6.6.1.2.1 Phase Alignment of Codec_Mode_Indication for AMR or AMR-WB . 35
6.6.1.3 Initiation at Resource Allocati on . 37
6.6.1.4 Time Alignment During Handover . 37
6.6.1.4.1 BSS External Handover . 37
6.6.1.4.2 BSS Internal Handover . 37
6.6.2 Procedures for Discontinuous Transmission (DTX) . 37
6.6.2.1 DTX procedures in the uplink direction . 38
6.6.2.2 DTX procedures in the downlink direction . 38
6.7 Procedures for Data Frames . 38
6.7.1 9.6 and 4.8 kbit/s channel coding . 38
6.7.1.1 The RAA Function . 39
6.7.1.2 The RA1/RA1' Function . 40
6.7.1.3 The RA2 Function . 40
6.7.1.4 Procedures for 8 kbit/s intermediate rate adaption rate . 40
6.7.1.5 Procedures for 16 kbit/s intermediate rate adaption rate . 40
6.7.1.6 Support of Non-Transparent Bearer Applications . 40
6.7.2 14.5 kbit/s channel coding . 41
6.7.2.1 The RAA" Function . 41
6.7.2.2 The RA1"/RAA' Function . 41
6.7.2.3 The RA2 Function . 41
6.8 Frame Synchronization . 41
6.8.1 Search for Frame Synchronization . 41
6.8.2 Frame Synchronization After Performing Downlink Timing Adjustments . 41
6.8.3 Frame Synchronization Monitoring and Recovery . 42
6.9 Correction/detection of bit errors on the terrestrial circuits . 43
6.9.1 Error Detection on the Control Bits . 43
6.9.1.1 General Procedure . 43
6.9.1.2 Frames for Speech Services . 43
6.9.2 Handling of frames received with errors . 44
6.9.2.1 In case of Full Rate speech . 44
6.9.2.2 In case of Enhanced Full Rate, Adaptive Multi-Rate and Adaptive Multi-Rate Wideband speech . 44
6.10 Procedures for Operation & Maintenance . 44
6.10.1 Transfer of O&M Information Between the TRAU and the BSC . 44
6.10.2 Procedures in the TRAU . 45
6.10.3 Procedures in the BSC . 45
6.10.3.1 Use of O&M Frames . 45
6.10.4 Procedures in the BTS . 45
Annex A (informative): Change History . 46
History . 47

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3GPP TS 48.060 version 13.0.0 Release 13 5 ETSI TS 148 060 V13.0.0 (2016-01)
Foreword
rd
This Technical Specification has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.

ETSI
3GPP TS 48.060 version 13.0.0 Release 13 6 ETSI TS 148 060 V13.0.0 (2016-01)
1 Scope
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 3GPP TS 44.021 and 3GPP 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 3GPP 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 3GPP TS 48.051.
NOTE: The present document should be considered together with the 3GPP TS 06 series of specifications, 3GPP
TS 44.021 (Rate Adaptation on the MS-BSS Interface) and 3GPP TS 48.020 (Rate Adaptation on the
BS/MSC Interface).
2 References
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] 3GPP TS 21.905: "Vocabulary for 3GPP Specifications".
[2] 3GPP TS 44.006: "Mobile Station - Base Station System (MS - BSS) interface Data Link (DL)
layer specification".
[3] 3GPP TS 44.021: "Rate adaption on the Mobile Station
[4] Void.
[5] 3GPP TS 46.010: "Full rate speech; Transcoding".
[6] 3GPP TS 46.011: "Full rate speech; Substitution and muting of lost frames for full rate speech
channels".
[7] 3GPP TS 46.012: "Full rate speech; Comfort noise aspect for full rate speech traffic channels".
[8] 3GPP TS 46.031: "Full rate speech; Discontinuous Transmission (DTX) for full rate speech traffic
channels".
[9] 3GPP TS 46.032: "Voice Activity Detector (VAD)".
[10] 3GPP TS 48.020: "Rate adaption on the Base Station System - Mobile-services Switching Centre
(BSS - MSC) interface".
[11] 3GPP TS 48.051: "Base Station Controller - Base Transceiver Station (BSC - BTS) interface;
General aspects".
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3GPP TS 48.060 version 13.0.0 Release 13 7 ETSI TS 148 060 V13.0.0 (2016-01)
[12] 3GPP TS 48.054: "Base Station Controller - Base Transceiver Station (BSC - BTS) interface
Layer 1 structure of physical circuits".
[13] 3GPP TS 48.058: "Base Station Controller - Base Transceiver Station (BSC - BTS) interface;
Layer 3 specification".
[14] 3GPP 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] 3GPP TS 46.060: "Enhanced Full rate speech transcoding".
[20] 3GPP TS 46.061: "Substitution and muting of lost frames for Enhanced Full rate speech channels".
[21] 3GPP TS 46.062: "Comfort noise aspect for Enhanced Full rate speech traffic channels".
[22] 3GPP TS 46.081: "Discontinuous Transmission (DTX) for Enhanced Full rate speech traffic
channel".
[23] 3GPP TS 46.082: "Voice Activity Detection (VAD)".
[24] Void.
[25] 3GPP TS 26.090: "Adaptive Multi-Rate speech transcoding".
[26] 3GPP TS 26.091: "Substitution and muting of lost frames for Adaptive Multi-Rate speech traffic
channels".
[27] 3GPP TS 26.092: "Comfort noise aspect for Adaptive Multi-Rate speech traffic channels".
[28] 3GPP TS 26.093: "Discontinuous Transmission (DTX) for Adaptive Multi-Rate speech traffic
channels".
[29] 3GPP TS 26.094: "Voice Activity Detection (VAD) for Adaptive Multi-Rate speech traffic
channels ".
[30] 3GPP TS 45.009: "Link Adaptation".
[31] 3GPP TS 48.061: "Inband control of remote transcoders and rate adaptors (half rate)".
[32] 3GPP TS 28.062: "Inband Tandem Free Operation (TFO) of Speech Codecs".
[33] 3G 26.171: "Digital cellular telecommunications system; Adaptive Multi-Rate Wideband speech
processing functions, General Description."
[34] 3G 26.190: "Digital cellular telecommunications system; Adaptive Multi-Rate Wideband speech
transcoding".
[35] 3G 26.191: "Digital cellular telecommunications system; Substitution and muting of lost frames
for Adaptive Multi-Rate Wideband speech traffic channels".
[36] 3G 26.192: "Digital cellular telecommunications system; Comfort noise aspect for Adaptive Multi-
Rate Wideband speech traffic channels".
[37] 3G 26.193: "Digital cellular telecommunications system; Discontinuous Transmission (DTX) for
Adaptive Multi-Rate Wideband speech traffic channels".
[38] 3G 26.194: "Digital cellular telecommunications system; Voice Activity Detection (VAD) for
Adaptive Multi-Rate Wideband speech traffic channels ".
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3GPP TS 48.060 version 13.0.0 Release 13 8 ETSI TS 148 060 V13.0.0 (2016-01)
3 Abbreviations
Abbreviations used in the present document are listed in 3GPP TS 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
4 General Approach
When the transcoders/rate adaptors are positioned remote to the BTS, the information between the Channel Codec Unit
(CCU) and the remote Transcoder/Rate Adaptor Unit (TRAU) is transferred in frames with a fixed length of 320 bits
(20 ms). In the present document, these frames are denoted "TRAU frames". Within these frames, both the speech/data
and the TRAU associated control signals are transferred.
The Abis interface should be the same if the transcoder is positioned 1) at the MSC site of the BSS or if it is positioned
2) at the BSC site of the BSS. In case 1), the BSC should be considered as transparent for 16 kbit/s channels.
In case of 4,8 and 9,6 kbit/s channel coding when data is adapted to the 320 bit frames, a conversion function is required
in addition to the conversion/rate adaption specified in 3GPP TS 48.020. This function constitutes the RAA. In case of
14,5 kbit/s channel coding, no RAA rate adaption is required because V.110 framing is not used.
The TRAU is considered a part of the BSC, and the signalling between the BSC and the TRAU (e.g. detection of call
release, handover and transfer of O&M information) may be performed by using BSC internal signals. The signalling
between the CCU and the TRAU, using TRAU frames as specified in the present document, is mandatory when the
Abis interface is applied.
NOTE: If standard 64 kbit/s switching is used in the BSC, multiplexing according to CCITT Recommendation
I.460 should apply at both sides of the switch.
In figure 4.1, a possible configuration of the TRAU and the CCU is shown.
The functions inside the TRAU are:
- "Remote Transcoder and Rate Adaptor Control Function" (RTRACF);
- "Remote Speech Handler Function" (RSHF);
- The RAA function in case of 4.8 and 9.6 kbit/s channel coding;
- The RAA" function in case of 14.5 kbit/s channel coding;
- The RA2 function;
- The transcoder function.
- Optionally the TFO functions (see 3GPP TS 28.062).
The functions inside the CCU are:
ETSI
3GPP TS 48.060 version 13.0.0 Release 13 9 ETSI TS 148 060 V13.0.0 (2016-01)
- "Transcoder and Rate Adaptor Control Function" (TRACF);
- "Speech Handler Function" (SHF);
- The RAA function in case of 4.8 and 9.6 kbit/s channel coding;
- The RA1/RA1' function in case of 4.8 and 9.6 kbit/s channel coding;
- The RA1"/RAA" function in case of 14.5 kbit/s channel coding;
- The channel codec function;
- If AMR or AMR-WB is supported, the Link Adaptation (see 3GPP TS 45.009).
The present document will not describe the procedures inside the TRAU and the CCU. The layout in figure 4.1 is only
intended as a reference model.

Figure 4.1: Functional entities for handling of remote control of remote transcoders and rate
adaptors
ETSI
3GPP TS 48.060 version 13.0.0 Release 13 10 ETSI TS 148 060 V13.0.0 (2016-01)
NOTE: This figure applies only for 4,8 and 9,6 kbit/s channel coding.
5 Frame Structure
5.1 Frames for Speech Services
5.1.1 Frames for Full Rate and Enhanced Full Rate Speech

Bit number
Octet no. 1 2 3 4 5 6 7 8
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
2 1 C1 C2 C3 C4 C5 C6 C7
3 C8 C9 C10 C11 C12 C13 C14 C15
1 D1 D2 D3 D4 D5 D6 D7
5 D8 D9 D10 D11 D12 D13 D14 D15
6 1 D16 D17 D18 D19 D20 D21 D22
D23 D24 D25 D26 D27 D28 D29 D30
8 1 D31 D32 D33 D34 D35 D36 D37
9 D38 D39 D40 D41 D42 D43 D44 D45
10 1 D46 D47 D48 D49 D50 D51 D52
11 D53 D54 D55 D56 D57 D58 D59 D60
12 1 D61 D62 D63 D64 D65 D66 D67
13 D68 D69 D70 D71 D72 D73 D74 D75
14 1 D76 D77 D78 D79 D80 D81 D82
15 D83 D84 D85 D86 D87 D88 D89 D90
16 1 D91 D92 D93 D94 D95 D96 D97
17 D98 D99 D100 D101 D102 D103 D104 D105
1 D106 D107 D108 D109 D110 D111 D112
19 D113 D114 D115 D116 D117 D118 D119 D120
20 1 D121 D122 D123 D124 D125 D126 D127
D128 D129 D130 D131 D132 D133 D134 D135
22 1 D136 D137 D138 D139 D140 D141 D142
23 D143 D144 D145 D146 D147 D148 D149 D150
1 D151 D152 D153 D154 D155 D156 D157
25 D158 D159 D160 D161 D162 D163 D164 D165
26 1 D166 D167 D168 D169 D170 D171 D172
D173 D174 D175 D176 D177 D178 D179 D180
28 1 D181 D182 D183 D184 D185 D186 D187
29 D188 D189 D190 D191 D192 D193 D194 D195
30 1 D196 D197 D198 D199 D200 D201 D202
31 D203 D204 D205 D206 D207 D208 D209 D210
32 1 D211 D212 D213 D214 D215 D216 D217
33 D218 D219 D220 D221 D222 D223 D224 D225
34 1 D226 D227 D228 D229 D230 D231 D232
35 D233 D234 D235 D236 D237 D238 D239 D240
36 1 D241 D242 D243 D244 D245 D246 D247
37 D248 D249 D250 D251 D252 D253 D254 D255
1 D256 D257 D258 D259 D260 C16 C17
39 C18 C19 C20 C21 T1 T2 T3 T4

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5.1.2 Frames for Adaptive Multi-Rate Speech (AMR-NB)

Bit number
Octet no. 1 2 3 4 5 6 7 8
0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0
1 C1 C2 C3 C4 C5 C6 C7
3 C8 C9 C10 C11 C12 C13 C14 C15
4 1 C16 C17 C18 C19 C20 C21 C22
C23 C24 C25 D1 D2 D3 D4 D5
6 1 D6 D7 D8 D9 D10 D11 D12
7 D13 D14 D15 D16 D17 D18 D19 D20
1 D21 D22 D23 D24 D25 D26 D27
9 D28 D29 D30 D31 D32 D33 D34 D35
10 1 D36 D37 D38 D39 D40 D41 D42
D43 D44 D45 D46 D47 D48 D49 D50
12 1 D52 D52 D53 D54 D55 D56 D57
13 D58 D59 D60 D61 D62 D63 D64 D65
14 1 D66 D67 D68 D69 D70 D71 D72
15 D73 D74 D75 D76 D77 D78 D79 D80
16 1 D81 D82 D83 D84 D85 D86 D87
D88 D89 D90 D91 D92 D93 D94 D95
18 1 D96 D97 D98 D99 D100 D101 D102
19 D103 D104 D105 D106 D107 D108 D109 D110
20 1 D111 D112 D113 D114 D115 D116 D117
21 D118 D119 D120 D121 D122 D123 D124 D125
22 1 D126 D127 D128 D129 D130 D131 D132
23 D133 D134 D135 D136 D137 D138 D139 D140
24 1 D141 D142 D143 D144 D145 D146 D147
D148 D149 D150 D151 D152 D153 D154 D155
26 1 D156 D157 D158 D159 D160 D161 D162
27 D163 D164 D165 D166 D167 D168 D169 D170
1 D171 D172 D173 D174 D175 D176 D177
29 D178 D179 D180 D181 D182 D183 D184 D185
30 1 D186 D187 D188 D189 D190 D191 D192
D193 D194 D195 D196 D197 D198 D199 D200
32 1 D201 D202 D203 D204 D205 D206 D207
33 D208 D209 D210 D211 D212 D213 D214 D215
1 D216 D217 D218 D219 D220 D221 D222
35 D223 D224 D225 D226 D227 D228 D229 D230
36 1 D231 D232 D233 D234 D235 D236 D237
D238 D239 D240 D241 D242 D243 D244 D245
38 1 D246 D247 D248 D249 D250 D251 D252
39 D253 D254 D255 D256 T1 T2 T3 T4

5.1.3 Frames for Adaptive Multi-Rate Wideband Speech (AMR-WB) (16
kbit/s)
The frame format for AMR-NB shall be used for all frames for AMR-WB as well, see chapters 5.1.2 and 5.5.1.3.
5.1.4 Frames for Adaptive Multi-Rate Wideband Speech (AMR-WB) (32
kbit/s)
The frame format for AMR-NB shall be used for all frames for AMR-WB as well, see chapters 5.1.2 and 5.5.1.3. In
case of the AMR-WB modes 15.85 and 23.85 two 16kbit/s frames (channel 'a' and channel 'b') are used to compose a
32kbit/s frame.
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5.1.5 Frames for Speech Codec Configuration Exchange

Bit number
Octet no. 1 2 3 4 5 6 7 8
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
2 1 C1 C2 C3 C4 C5 D1 D2
3 D3 D4 D5 D6 D7 D8 D9 D10
4 1
5    D25
7    D40
8 1
D55
10 1
11    D70
13    D85
14 1
D100
16 1
17    D115
19    D130
20 1
D145
22 1
23    D160
24 1
25    D175
26 1
27    D190
28 1
D205
30 1
31    D220
33    D235
34 1
D250
36 1
37    D265
1    D272
39 D273 D274 D275 D276 T1 T2 T3 T4

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5.2 O&M Frames
Bit number
Octet no. 1 2 3 4 5 6 7 8
0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0
2 1 C1 C2 C3 C4 C5 C6 C7
3 C8 C9 C10 C11 C12 C13 C14 C15
4 1 D1 D2 D3 D4 D5 D6 D7
5 D8 D9 D10 D11 D12 D13 D14 D15
6 1 D16 D17 D18 D19 D20 D21 D22
7 D23 D24 D25 D26 D27 D28 D29 D30
8 1 D31 D32 D33 D34 D35 D36 D37
9 D38 D39 D40 D41 D42 D43 D44 D45
10 1 D46 D47 D48 D49 D50 D51 D52
11 D53 D54 D55 D56 D57 D58 D59 D60
12 1 D61 D62 D63 D64 D65 D66 D67
13 D68 D69 D70 D71 D72 D73 D74 D75
14 1 D76 D77 D78 D79 D80 D81 D82
15 D83 D84 D85 D86 D87 D88 D89 D90
16 1 D91 D92 D93 D94 D95 D96 D97
17 D98 D99 D100 D101 D102 D103 D104 D105
18 1 D106 D107 D108 D109 D110 D111 D112
19 D113 D114 D115 D116 D117 D118 D119 D120
20 1 D121 D122 D123 D124 D125 D126 D127
21 D128 D129 D130 D131 D132 D133 D134 D135
22 1 D136 D137 D138 D139 D140 D141 D142
23 D143 D144 D145 D146 D147 D148 D149 D150
24 1 D151 D152 D153 D154 D155 D156 D157
25 D158 D159 D160 D161 D162 D163 D164 D165
26 1 D166 D167 D168 D169 D170 D171 D172
27 D173 D174 D175 D176 D177 D178 D179 D180
28 1 D181 D182 D183 D184 D185 D186 D187
29 D188 D189 D190 D191 D192 D193 D194 D195
30 1 D196 D197 D198 D199 D200 D201 D202
31 D203 D204 D205 D206 D207 D208 D209 D210
32 1 D211 D212 D213 D214 D215 D216 D217
33 D218 D219 D220 D221 D222 D223 D224 D225
34 1 D226 D227 D228 D229 D230 D231 D232
35 D233 D234 D235 D236 D237 D238 D239 D240
36 1 D241 D242 D243 D244 D245 D246 D247
37 D248 D249 D250 D251 D252 D253 D254 D255
38 1 D256 D257 D258 D259 D260 D261 D262
39 D263 D264 S1 S2 S3 S4 S5 S6

ETSI
3GPP TS 48.060 version 13.0.0 Release 13 14 ETSI TS 148 060 V13.0.0 (2016-01)
5.3 Data Frames
5.3.1 Data Frame (for Synchronisation)

Bit number
Octet no. 1 2 3 4 5 6 7 8
0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0
2 1 C1 C2 C3 C4 C5 C6 C7
3 C8 C9 C10 C11 C12 C13 C14 C15
4 1    .
5 1    .
6 1    .
7 1 Data frame position 1
8 1 63 bits.
9 1 (72 bits including bit position 1)
10 1
11 1
12 1
13 1
14 1
15 1
161 1 Data frame position 2
17 1
18 1
19 1
20 1
21 1
22 1
23 1
24 1
25 1 Data frame position 3
26 1
27 1
28 1
29 1
30 1
31 1
32 1
33 1 Data frame position 4
34 1
35 1
36 1
37 1
38 1
39 1
ETSI
3GPP TS 48.060 version 13.0.0 Release 13 15 ETSI TS 148 060 V13.0.0 (2016-01)
5.3.2 Extended data frame (E-TRAU : data transport)

Bit number
Octet no. 1 2 3 4 5 6 7 8
0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0
2 1 C1 C2 C3 C4 C5 C6 C7
3 C8 C9 C10 C11 C12 C13 M1 M2
4 D1 D2 .
7 Data block of 288 data bits and M1, M2.
39   . D287 D288
ETSI
3GPP TS 48.060 version 13.0.0 Release 13 16 ETSI TS 148 060 V13.0.0 (2016-01)
5.4 Idle Speech Frames
Bit number
Octet no. 1 2 3 4 5 6 7 8
0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0
2 1 C1 C2 C3 C4 C5 C6 C7
3 C8 C9 C10 C11 C12 C13 C14 C15
4 1 1 1 1 1 1 1 1
5 1 1 1 1 1 1 1 1
6 1 1 1 1 1 1 1 1
7 1 1 1 1 1 1 1 1
8 1 1 1 1 1 1 1 1
9 1 1 1 1 1 1 1 1
10 1 1 1 1 1 1 1 1
11 1 1 1 1 1 1 1 1
12 1 1 1 1 1 1 1 1
13 1 1 1 1 1 1 1 1
14 1 1 1 1 1 1 1 1
15 1 1 1 1 1 1 1 1
16 1 1 1 1 1 1 1 1
17 1 1 1 1 1 1 1 1
18 1 1 1 1 1 1 1 1
19 1 1 1 1 1 1 1 1
20 1 1 1 1 1 1 1 1
21 1 1 1 1 1 1 1 1
22 1 1 1 1 1 1 1 1
23 1 1 1 1 1 1 1 1
24 1 1 1 1 1 1 1 1
25 1 1 1 1 1 1 1 1
26 1 1 1 1 1 1 1 1
27 1 1 1 1 1 1 1 1
28 1 1 1 1 1 1 1 1
29 1 1 1 1 1 1 1 1
30 1 1 1 1 1 1 1 1
31 1 1 1 1 1 1 1 1
32 1 1 1 1 1 1 1 1
33 1 1 1 1 1 1 1 1
34 1 1 1 1 1 1 1 1
35 1 1 1 1 1 1 1 1
36 1 1 1 1 1 1 1 1
37 1 1 1 1 1 1 1 1
38 1 1 1 1 1 1 C16 C17
39 C18 C19 C20 C21 T1 T2 T3 T4

5.5 Coding
In the following clauses, the coding of the frames is described. Any spare or not used control bits should be coded
binary "1".
For all frame types the octet 0, 1 and the first bit of octets 2, 4, 6, 8, . 38 are used as frame sync.
ETSI
3GPP TS 48.060 version 13.0.0 Release 13 17 ETSI TS 148 060 V13.0.0 (2016-01)
5.5.1 Coding of Frames for Speech Services
5.5.1.1 Coding of Frames for Full Rate and Enhanced Full Rate Speech
5.5.1.1.1 Coding of Control bits (C-bits)

Description Uplink Downlink
C1C2C3C4 C5  C1C2C3C4 C5
Frame type  FR Speech: 0 0 0 1 0. Speech: 1 1 1 0 0
(Bits C1 - C5).     EFR Speech: 1 1 0 1 0 Speech: 1 1 0 1 0

Time Binary number indicating the Binary number indicating
Alignment required timing adjustment to the timing adjustment made.
(Bits C6 - C11)
be made in steps of 250/500 μs.

The following values apply for the coding
C6C7  . . .  C11
0 0 0 0 0 0 No change in frame timing
0 0 0 0 0 1 Delay frame 1 x 500 μs
0 0 0 0 1 0 Delay frame 2 x 500 μs
.  .  . .
.  .  . .
1 0 0 1 1 1 Delay frame 39 x 500 μs
1 0 1 0 0 0 Not used
.  .  . .
1 1 1 1 0 1 Not used
1 1 1 1 1 0 Delay frame 1 x 250 μs

1 1 1 1 1 1 Advance frame 250 μs

Frame indicators. The definition C12: BFI C12 - C15: Spare
and coding of these indicators 0 : BFI = 0
are given in 3GPP TS 46.031. 1 : BFI = 1 IF FR. Speech

C13 C14: SID ELSE
Bits C12 - C16  0   0 :SID = 0 C12: UFE
0   1 :SID = 1 0 :UFE=0 bad uplink frame
1   0 :SID = 2 1 : UFE=1 good up-link frame
Downlink
Uplink Frame Error C15: TAF
(UFE) C12  0 : TAF = 0
(see clause 6.8.3) 1 : TAF = 1 C13 - C15: spare

C16: Spare C16: SP
0 : SP = 0
1 : SP = 1
DTX indicator  C17: DTXd C17: Spare
0 : DTX not applied
1 : DTX applied
Bits C18 - C21 Spare Spare
ETSI
3GPP TS 48.060 version 13.0.0 Release 13 18 ETSI TS 148 060 V13.0.0 (2016-01)
5.5.1.1.2 Coding of Data Bits (D-bits)
For Full Rate Speech:
Bits D1 . D260: Speech block transferred in the same order as output from the transcoder (see 3GPP TS
46.010).
For Enhanced Full Rate Speech:
The speech block is subdivided in five subsets. The order within a given subset is the same as output from the
transcoder (see ETS 300 726, 3GPP TS 46.060). Three parity bits are added at the end of each sub-set.
These parity bits are added to the bits of the subset, according to a degenerate (shortened) cyclic code using the
generator polynomial:
g(D) = D + D + 1
The encoding of the cyclic code is performed in a systematic form which means that, in GF(2), the polynomial:
n n-1 3 2
d(m)D + d(m+1)D + .+ d(m + n-3)D + p(0)D + p(1)D + p(2)
where p(0), p(1), p(2) are the parity bits, when divided by g(D), yields a remainder equal to:
1 + D + D
For every CRC, the transmission order is p(0) first followed by p(1) and p(2) successively.
Bit D1 : spare (binary "1").
Bits D2.D39 : Indexes of the LSF submatrices.
Bits D40.D42 : CRC over bits D1 to D22, D25 to D27 and D29.
Bits D43.D95 : Indexes of the parameters of first sub-frame.
Bits D96.D98 : CRC over bits D43 to D52, D91 and D92.
Bits D99.D148 : Indexes of the parameters of second sub-frame.
Bits D149.D151 : CRC over bits D99 to D103, D105, D144 and D145.
Bits D152.D204 : Indexes of the parameters of third sub-frame.
Bits D205.D207 : CRC over bits D152 to D161, D200 and D201.
Bits D208.D257 : Indexes of the parameters of fourth sub-frame.
Bits D258.D260 : CRC over bits D208 to D212, D214, D253 and D254.
5.5.1.1.3 Time Alignment Bits (T1…T4)
Bits T1 . T4:  Bits positioned at the end of the downlink frames. If the timing of the frame is to be
advanced 250 µs, these 4 bits are not transferred in order to reduce the frame length
accordingly. When transferred the bits are set to binary "1".
ETSI
3GPP TS 48.060 version 13.0.0 Release 13 19 ETSI TS 148 060 V13.0.0 (2016-01)
5.5.1.2 Coding of Frames for Adaptive Multi-Rate Speech (AMR-NB)
5.5.1.2.1 Coding of Control bits (C-bits)

Control Bits Description Uplink Description Downlink
C1.C5 Frame_Type (Codec_Type) Frame_Type (Codec_Type)
C6.C11 Time Alignment Command (TAC) or Phase Time Alignment Command (TAC) or
Alignment Control (PAC) or Phase Alignment Control (PAC) or
TFO Information or TFO Information or
Handover Information Handover Information
C12 Request or Indication Flag (RIF) Request or Indication Flag (RIF)
C13 spare, set to 1 Uplink Frame Error (UFE)
C14 . C15 . C16 Config_Prot Config_Prot
C17 . C18 Message_No Message_No
C19 DTX in downlink requested (DTXd) spare, reserved for TFO (see 28.062)
C20 TFO Enabled (TFOE) spare, reserved for TFO (see 28.062)
C21 . C22 Frame_Classification, Rx_Type Frame_Classification, Tx_Type
C23 . C24 . C25 Codec_Mode_Indication (RIF == 0) or Codec_Mode_Indication (RIF == 0) or
Codec_Mode_Request (RIF == 1) or Codec_Mode_Request (RIF == 1) or
0.0.0 (Frame_Classification == 0.0) 0.0.0 (Frame_Classification == 0.0)

Detailed Description:
Frame Type:
The coding of the Frame_Type (also called "Codec_Type") for AMR is identical in uplink and downlink.
C1.C5:
0.0.1.1.0: Adaptive Multi-Rate Codec.
Time Alignment Field:
The Time Alignment Field (Bits C6.C11) is used to carry either the Time Alignment Command (TAC), the Phase
Alignment Control (PAC) or the TFO and Handover Information. The Time Alignment Com
...