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TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
General requirements on interworking between the
Public Land Mobile Network (PLMN)
and the Integrated Services Digital Network (ISDN)
or Public Switched Telephone Network (PSTN)
(3GPP TS 29.007 version 15.1.0 Release 15)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
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3GPP TS 29.007 version 15.1.0 Release 15 1 ETSI TS 129 007 V15.1.0 (2019-04)
Reference
RTS/TSGC-0329007vf10
Keywords
GSM,UMTS
ETSI
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3GPP TS 29.007 version 15.1.0 Release 15 2 ETSI TS 129 007 V15.1.0 (2019-04)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
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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
.
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
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3GPP TS 29.007 version 15.1.0 Release 15 3 ETSI TS 129 007 V15.1.0 (2019-04)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 8
1 Scope . 9
2 References . 9
3 Definitions and abbreviations . 14
3.1 Definitions . 14
3.2 Abbreviations . 15
4 Introduction . 15
5 Void . 16
6 Network Characteristics . 16
6.1 Key Characteristics of Networks Concerned . 16
6.1.1 Characteristics of PLMNs . 16
6.1.2 Characteristics of PSTNs . 16
6.1.3 Characteristics of ISDN . 17
7 Interworking classifications . 17
7.1 Service interworking . 17
7.2 Network interworking . 17
7.3 Signalling interworking . 18
7.4 Numbering . 18
7.5 Supplementary service interworking . 18
8 Compatibility and subscription checking . 18
9 Interworking to PSTN . 19
9.1 Speech Calls . 19
9.1.1 Interworking indications to PLMN terminal . 19
9.1.2 Transmission aspects . 19
9.1.3 Generation of In-band Tones and Announcements (PLMN-PSTN) . 19
9.2 Data Calls . 19
9.2.1 Network interworking mobile originated . 20
9.2.1.1 Selection of interworking function . 20
9.2.1.2 Modem Selection . 20
9.2.1.3 Mapping of BC-IE from PLMN to ISUP (or other) . 21
9.2.2 Network Interworking Mobile terminated PSTN Originated . 21
9.2.2.1 Multi-numbering Scheme . 21
9.2.2.2 Single-numbering Scheme . 23
9.2.3 Transparent service support . 24
9.2.3.1 Structure of the MSC/IWF for Iu mode . 25
9.2.3.2 Structure of the MSC/IWF for A/Gb mode . 25
9.2.3.3 Mapping of signalling UE/MSC/IWF to modem interface requirements. 25
9.2.3.4 Establishment of end-to-end terminal synchronizations . 26
9.2.3.4.1 Terminating side (towards the UE). 27
9.2.3.4.1.1 Traffic channel types TCH/F4.8 and TCH/F9.6 for A/Gb mode . 27
9.2.3.4.1.2 Traffic channel type TCH/F14.4 for A/Gb mode . 27
9.2.3.4.2 Transit side (towards the fixed network) . 27
9.2.3.5 Network Independent Clocking (NIC) . 28
9.2.4 Non-transparent service support . 28
9.2.4.1 Structure of the MSC/IWF for Iu mode . 29
9.2.4.2 Structure of the MSC/IWF for A/Gb mode . 29
9.2.4.3 Re-constitution of user data. 29
9.2.4.4 Layer 2 relay functionality . 29
ETSI
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3GPP TS 29.007 version 15.1.0 Release 15 4 ETSI TS 129 007 V15.1.0 (2019-04)
9.2.4.5 In band signalling mapping flow control . 29
9.2.4.5.1 Conditions requiring flow control towards the fixed network . 30
9.2.4.5.2 Conditions requiring flow control towards the UE . 30
9.2.4.6 Data buffers . 30
9.2.4.6.1 Transmit buffers (towards UE) . 30
9.2.4.6.2 Receive buffers (from UE) . 30
9.2.4.7 Transportation of the Break condition. 30
9.2.4.8 In band signalling mapping modem status information . 31
9.2.4.9 Support of out-band flow control . 31
9.2.4.10 Establishment of end-to-end terminal synchronizations . 31
9.2.4.10.1 Terminating side (towards the UE). 32
9.2.4.10.2 Transit side (towards the fixed network) . 32
9.2.4.11 Data compression . 32
9.2.4.12 Service level up and down grading . 32
9.2.5 DTE/DCE interface (Filtering) . 33
9.3 Interworking Alternate Speech / Facsimile Group 3 Calls . 34
9.3.1 General . 34
9.3.2 Mobile originated PSTN terminated calls . 34
9.3.3 PSTN originated mobile terminated calls . 34
9.3.4 BICC network architecture . 35
9.4 3G-H.324/M calls over 3,1kHz audio . 35
9.4.1 Mobile originated multimedia call . 35
9.4.1.1 Call setup . 35
9.4.1.2 Fallback to speech after setup . 36
9.4.2 Mobile terminated multimedia call . 36
9.4.2.1 Call setup . 36
9.4.2.2 Fallback to speech after setup . 36
9.4.3 Seamless data rate change . 37
10 Interworking to the ISDN . 37
10.1 Speech Calls . 37
10.2 Data Calls . 37
10.2.1 Network interworking mobile originated . 37
10.2.2 Network interworking mobile terminated . 38
10.2.2.1 General . 38
10.2.2.2 Functions in GMSC. 38
10.2.2.3 Functions in HLR . 38
10.2.2.4 Functions in VMSC. 39
10.2.2.4A Functions in VLR . 41
10.2.2.5 Call Flows . 43
10.2.2.6 Mapping Functions . 44
10.2.2.7 Creation of Backup Bearer Capability Information Element . 62
10.2.3 Transparent service support . 69
10.2.3.1 Structure of the MSC/IWF for Iu mode . 69
10.2.3.2 Structure of the MSC/IWF for A/Gb mode . 69
10.2.3.3 Mapping of signalling UE/MSC/IWF to modem or ISDN (V.110) TA-function interface
requirements . 70
10.2.3.4 Establishment of end-to-end terminal synchronizations . 71
10.2.3.4.1 Terminating side (towards the UE). 71
10.2.3.4.1.1 Traffic channel types TCH/F4.8 and TCH/F9.6 in A/Gb mode . 71
10.2.3.4.1.2 Traffic channel type TCH/F14.4 for A/Gb mode . 71
10.2.3.4.1.3 User Plane for Iu mode . 72
10.2.3.4.2 Transit side (towards the fixed network). . 72
10.2.3.5 Network independent Clocking (NIC) . 72
10.2.4 Non-transparent service support . 72
10.2.4.1 Structure of the MSC/IWF for Iu mode . 72
10.2.4.2 Structure of the MSC/IWF for A/Gb mode . 73
10.2.4.3 Re-constitution of user data. 73
10.2.4.4 Layer 2 relay functionality . 73
10.2.4.5 In band signalling mapping flow control . 73
10.2.4.5.1 Conditions requiring flow control - if flow control is provided - towards the fixed network . 74
10.2.4.5.2 Conditions requiring flow control towards the UE . 74
ETSI
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3GPP TS 29.007 version 15.1.0 Release 15 5 ETSI TS 129 007 V15.1.0 (2019-04)
10.2.4.6 Data buffers . 74
10.2.4.6.1 Transmit buffers (towards UE) . 74
10.2.4.6.2 Receive buffers (from UE) . 74
10.2.4.7 BREAK Indication . 75
10.2.4.8 Signalling mapping of modem or ISDN (V.110, V.120 or PIAFS) TA-function status
information . 75
10.2.4.9 Support of out-band flow control . 75
10.2.4.10 Synchronizations . 76
10.2.4.10.1 V.110 and V.120 Frame synchronizations. 76
10.2.4.10.2 RLP Frame start indication . 76
10.2.4.10.3 L2R Frame synchronizations . 76
10.2.4.10.4 Establishment of end-to-end terminal synchronizations . 76
10.2.4.10.4.1 Terminating side (towards the UE) . 76
10.2.4.10.4.2 Transit side (towards the fixed network) . 76
10.2.4.11 Data compression . 77
10.2.4.12 Additional aspects of V.120 Interworking . 77
10.2.4.12.1 V.120 Signalling parameters . 77
10.2.4.12.2 V.120 Protocol parameters . 77
10.2.4.12.3 Data compression on the ISDN . 77
10.2.4.12.4 Use of the V.120 Control State (header extension) octet . 77
10.2.4.13 Interworking with restricted 64 kbit/s networks . 78
10.2.4.13.1 Rate adaptation . 78
10.2.4.13.2 MSC - ISDN signalling . 78
10.2.4.14 Service level up and down grading . 78
10.2.4.15 Interworking in Frame Tunneling Mode . 78
10.2.4.16 Additional aspects of PIAFS Interworking . 79
10.2.5 DTE/DCE interface (Filtering) . 79
10.3 Interworking Alternate speech facsimile group 3 calls . 79
10.3.1 Alternate speech data bearer interworking . 79
10.3.1.1 General . 79
10.3.1.2 Mobile originated ISDN terminated . 79
10.3.1.3 ISDN originated mobile terminated . 79
10.4 3G-H.324/M calls over UDI/RDI . 80
10.4.1 Mobile originated multimedia call . 80
10.4.1.1 Call setup . 80
10.4.1.2 Fallback after setup . 80
10.4.1.3 User initiated service change after setup . 80
10.4.2 Mobile terminated multimedia call . 80
10.4.2.1 Call setup . 80
10.4.2.2 User initiated service change after setup . 81
11 Interworking between A/Gb mode MSC and Iu mode MSC . 81
11.0 Signalling issues . 81
11.0.1 Loss of BC Information during Handover from A/Gb mode to UTRAN Iu mode . 81
11.0.2 Handover from UTRAN Iu mode to A/Gb mode . 81
11.0.3 Loss of BC Information during Handover from A/Gb mode to GERAN Iu mode . 81
11.0.4 Handover from GERAN Iu mode to A/Gb mode . 82
11.0.5 Handover from UTRAN Iu mode to GERAN Iu mode . 82
11.0.6 Handover from GERAN Iu mode to UTRAN Iu mode . 82
11.1 Handover to A/Gb mode MSC . 82
11.2 Handover from A/Gb mode MSC to UTRAN Iu mode MSC . 83
11.3 Handover from A/Gb mode MSC to GERAN Iu
...