ETSI TS 129 165 V12.21.0 (2020-01)

ETSI TS 129 165 V12.21.0 (2020-01)






TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
5G;
Inter-IMS Network to Network Interface (NNI)
(3GPP TS 29.165 version 12.21.0 Release 12)

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3GPP TS 29.165 version 12.21.0 Release 12 1 ETSI TS 129 165 V12.21.0 (2020-01)



Reference
RTS/TSGC-0329165vcl0
Keywords
5G,GSM,LTE,UMTS
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All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

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®
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3GPP TS 29.165 version 12.21.0 Release 12 2 ETSI TS 129 165 V12.21.0 (2020-01)
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
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Legal Notice
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. These shall be
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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 29.165 version 12.21.0 Release 12 3 ETSI TS 129 165 V12.21.0 (2020-01)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 7
1 Scope . 8
2 References . 8
3 Definitions, symbols and abbreviations . 15
3.1 Definitions . 15
3.2 Symbols . 16
3.3 Abbreviations . 17
4 Overview . 18
5 Reference model for interconnection between IM CN subsystems . 20
5.1 General . 20
5.2 Functionalities performed by entities at the edge of the network . 20
5.2.1 Interconnection Border Control Function (IBCF). 20
5.2.2 Transition Gateway (TrGW) . 21
5.3 Identifying II-NNI traversal scenario . 21
5.3.1 General . 21
5.3.2 Mapping of the "iotl" SIP URI parameter to II-NNI traversal scenario . 22
6 Control plane interconnection . 22
6.1 Definition of Inter-IMS Network to Network Interconnection. 22
6.1.1 SIP methods and header fields . 22
6.1.1.1 General . 22
6.1.1.2 SIP methods . 22
6.1.1.3 SIP header fields . 23
6.1.1.3.0 General . 23
6.1.1.3.1 Trust and no trust relationship . 23
6.1.1.3.2 Derivation of applicable SIP header fields from TS 24.229 [5] . 24
6.1.1.3.3 Applicability of SIP header fields on a roaming II-NNI . 25
6.1.1.3.4 Applicability of SIP header fields on a non-roaming II-NNI . 25
6.1.1.4 Notations of the codes . 25
6.1.1.5 Modes of signalling . 26
6.1.2 SDP protocol . 26
6.1.2.1 General . 26
6.1.3 Major capabilities . 26
6.1.4 SIP message bodies . 33
6.2 Control Plane Transport . 36
6.2.1 General . 36
6.3 SIP timers . 36
7 User plane Interconnection . 38
7.1 Media and Codec . 38
7.2 User Plane Transport . 38
8 Numbering, Naming and Addressing . 39
8.1 Numbering, Naming and Addressing for SIP message . 39
8.2 Numbering, Naming and Addressing for SDP . 40
9 IP Version . 40
10 Security. 40
11 Charging . 40
11.1 General . 40
ETSI

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3GPP TS 29.165 version 12.21.0 Release 12 4 ETSI TS 129 165 V12.21.0 (2020-01)
11.2 Inter-operator accounting . 40
11.3 Transfer of IP multimedia service tariff information. 41
12 Supplementary services associated with the IMS multimedia telephony communication service. 42
12.1 General . 42
12.2 Malicious Communication IDentification (MCID) . 42
12.3 Originating Identification Presentation (OIP) and Originating Identification Restriction (OIR) . 42
12.4 Terminating Identification Presentation (TIP) and Terminating Identification Restriction (TIR) . 43
12.5 Anonymous Communication Rejection (ACR) . 43
12.6 Communication DIVersion (CDIV) . 43
12.7 Communication Waiting (CW) . 44
12.8 Communication HOLD (HOLD) . 44
12.9 Message Waiting Indication (MWI) . 44
12.10 Communication Barring (CB) . 45
12.10.1 Incoming Communication Barring (ICB) . 45
12.10.2 Outgoing Communication Barring (OCB) . 45
12.11 Completion of Communications to Busy Subscriber (CCBS) . 45
12.12 Completion of Communications by No Reply (CCNR) . 46
12.13 Explicit Communication Transfer (ECT) . 46
12.13.1 Consultative and blind transfer . 46
12.13.2 Assured transfer . 47
12.14 Customized Alerting Tone (CAT) . 47
12.15 Customized Ringing Signal (CRS) . 47
12.16 Closed User Group (CUG) . 48
12.17 Personal Network Management (PNM) . 48
12.18 Three-Party (3PTY) . 48
12.19 Conference (CONF) . 48
12.20 Flexible Alerting (FA) . 49
12.21 Announcements . 49
12.21.1 General . 49
12.21.2 Providing announcements during the establishment of a communication session . 49
12.21.3 Providing announcements during an established communication session . 49
12.21.4 Providing announcements when communication request is rejected . 50
12.22 Advice of Charge (AOC) . 50
12.23 Completion of Communications on Not Logged-in (CCNL) . 50
12.24 Unstructured Supplementary Service Data (USSD) . 51
13 Interoperability of IMS Centralized Services (ICS) over II-NNI . 51
13.1 General . 51
13.2 IMS Centralized Services (ICS) . 52
14 Interoperability of IMS Service Continuity over II-NNI . 52
14.1 General . 52
14.2 PS to CS Single Radio Voice Call Continuity (SRVCC) and Single Radio Video Call Continuity
(vSRVCC) . 52
14.2.1 Basic PS to CS SRVCC . 52
14.2.2 PS to CS SRVCC for calls in alerting phase . 53
14.2.3 Using the ATCF based architecture . 53
14.2.4 PS to CS SRVCC for originating calls in pre-alerting phase . 53
14.2.5 PS to CS SRVCC with the MSC server assisted mid-call feature . 54
14.3 Inter UE Transfer (IUT) . 54
14.4 MSC server assisted mid-call feature . 54
14.5 CS to PS Single Radio Voice Call Continuity (SRVCC) . 55
14.5.1 Basic CS to PS SRVCC . 55
14.5.2 CS to PS SRVCC for calls in alerting phase . 55
14.5.3 CS to PS SRVCC with the assisted mid-call feature . 55
14.6 PS to CS dual radio voice call continuity (DRVCC) . 55
14.6.1 Basic PS to CS DRVCC . 55
14.6.2 PS to CS DRVCC with the assisted mid-call feature . 56
14.6.3 PS to CS DRVCC for calls in alerting phase . 56
14.6.4 PS to CS DRVCC for originating calls in pre-alerting phase . 56
14.7 CS to PS Dual Radio Voice Call Continuity (DRVCC) . 56
14.7.1 Basic CS to PS DRVCC . 56
ETSI

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3GPP TS 29.165 version 12.21.0 Release 12 5 ETSI TS 129 165 V12.21.0 (2020-01)
14.7.2 CS to PS DRVCC with the assisted mid-call feature . 57
14.7.3 CS to PS DRVCC for calls in alerting phase . 57
14.7.4 CS to PS DRVCC for originating calls in pre-alerting phase . 57
14.8 PS to PS access transfer . 57
15 Presence service . 58
15.0 General . 58
15.1 Subscription of presence information . 58
15.2 Watcher subscribing to Presence List . 58
15.3 Subscription to Watcher Information . 59
15.4 Subscription to state changes in XML documents . 59
15.5 Presence enhancements specified in Open Mobile Alliance (OMA) Release 1.1 . 59
15.5.1 General . 59
15.5.2 OMA subscription of presence information . 59
15.5.3 OMA watcher subscribing to Presence List . 59
15.5.4 OMA subscription to Watcher Information . 60
15.6 Presence enhancements specified in Open Mobile Alliance (OMA) Release 2.0 . 60
15.6.1 General . 60
15.6.2 OMA subscription of presence information . 60
15.6.3 OMA watcher subscribing to Presence List . 60
15.6.4 OMA subscription to Watcher Information . 61
15.6.5 Subscription to state changes in XML documents . 61
15.6.6 Void . 61
15.6.7 Void . 61
16 Messaging service . 61
16.1 General . 61
16.2 Page-mode messaging . 62
16.4 Session-mode messaging . 62
16.5 Session-mode messaging conferences . 62
17 Optimal Media Routeing . 62
17.1 General . 62
17.2 OMR related SDP attributes . 63
17.3 IP realm names . 63
18 Inter-UE transfer (IUT) . 63
18.1 General . 63
18.2 IUT without establishment of a collaborative session . 63
18.3 IUT using a collaborative session . 63
18.3.1 Collaborative session of participants of the same subscription . 63
18.3.2 Establishment of a collaborative session during session setup . 64
18.3.3 Assignment and transfer of control of a collaborative session . 64
18.3.4 Collaborative session of participants of different subscriptions . 65
18.4 Session replication / media replication . 65
18.4.1 Pull mode . 65
18.4.2 Push mode . 65
19 Roaming Architecture for Voice over IMS with Local Breakout . 66
20 Delivery of Media Resource Broker address information . 66
21 Overload control . 66
21.1 General . 66
21.2 Feedback based mechanism . 67
21.3 The load filter mechanism . 67
22 Delivery of original destination identity . 67
23 Telepresence using IMS . 67
24 Barring of premium rate
...