ETSI TS 129 165 V13.14.0 (2020-01)

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 13.14.0 Release 13)

RTS/TSGC-0329165vde0

General Information

• Status: Published
• Publication Date: 14-Jan-2020
• Technical Committee: 3GPP CT 3 - Interworking with external networks (formely CN3)
• Current Stage: 12 - Completion
• Completion Date: 15-Jan-2020

Standards Content (Sample)

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 13.14.0 Release 13)

3GPP TS 29.165 version 13.14.0 Release 13 1 ETSI TS 129 165 V13.14.0 (2020-01)

Reference
RTS/TSGC-0329165vde0
Keywords
5G,GSM,LTE,UMTS
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2020.
All rights reserved.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners. ®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
3GPP TS 29.165 version 13.14.0 Release 13 2 ETSI TS 129 165 V13.14.0 (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
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
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
interpreted as being references to the corresponding ETSI deliverables.
The cross reference between 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 29.165 version 13.14.0 Release 13 3 ETSI TS 129 165 V13.14.0 (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 . 16
3.1 Definitions . 16
3.2 Symbols . 17
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 . 21
5.2.1 Interconnection Border Control Function (IBCF). 21
5.2.2 Transition Gateway (TrGW) . 22
5.3 Identifying II-NNI traversal scenario . 22
5.3.1 General . 22
5.3.2 Mapping of the "iotl" SIP URI parameter to II-NNI traversal scenario . 22
6 Control plane interconnection . 23
6.1 Definition of Inter-IMS Network to Network Interconnection. 23
6.1.1 SIP methods and header fields . 23
6.1.1.1 General . 23
6.1.1.2 SIP methods . 23
6.1.1.3 SIP header fields . 24
6.1.1.3.0 General . 24
6.1.1.3.1 Trust and no trust relationship . 24
6.1.1.3.2 Derivation of applicable SIP header fields from 3GPP TS 24.229 [5] . 27
6.1.1.3.3 Applicability of SIP header fields on a roaming II-NNI . 27
6.1.1.3.4 Applicability of SIP header fields on a non-roaming II-NNI . 28
6.1.1.4 Notations of the codes . 28
6.1.1.5 Modes of signalling . 28
6.1.2 SDP protocol . 28
6.1.2.1 General . 28
6.1.3 Major capabilities . 29
6.1.4 SIP message bodies . 35
6.2 Control Plane Transport . 38
6.2.1 General . 38
6.3 SIP timers . 38
7 User plane Interconnection . 40
7.1 Media and Codec . 40
7.2 User Plane Transport . 40
8 Numbering, Naming and Addressing . 41
8.1 Numbering, Naming and Addressing for SIP message . 41
8.2 Numbering, Naming and Addressing for SDP . 42
9 IP Version . 42
10 Security. 42
11 Charging . 42
11.1 General . 42
ETSI
3GPP TS 29.165 version 13.14.0 Release 13 4 ETSI TS 129 165 V13.14.0 (2020-01)
11.2 Inter-operator accounting . 42
11.3 Transfer of IP multimedia service tariff information. 43
12 Supplementary services associated with the IMS multimedia telephony communication service. 44
12.1 General . 44
12.2 Malicious Communication IDentification (MCID) . 44
12.3 Originating Identification Presentation (OIP) and Originating Identification Restriction (OIR) . 44
12.4 Terminating Identification Presentation (TIP) and Terminating Identification Restriction (TIR) . 45
12.5 Anonymous Communication Rejection (ACR) . 45
12.6 Communication DIVersion (CDIV) . 45
12.7 Communication Waiting (CW) . 46
12.8 Communication HOLD (HOLD) . 46
12.9 Message Waiting Indication (MWI) . 46
12.10 Communication Barring (CB) . 47
12.10.1 Incoming Communication Barring (ICB) . 47
12.10.2 Outgoing Communication Barring (OCB) . 47
12.11 Completion of Communications to Busy Subscriber (CCBS) . 47
12.12 Completion of Communications by No Reply (CCNR) . 48
12.13 Explicit Communication Transfer (ECT) . 48
12.13.1 Consultative and blind transfer . 48
12.13.2 Assured transfer . 49
12.14 Customized Alerting Tone (CAT) . 49
12.15 Customized Ringing Signal (CRS) . 49
12.16 Closed User Group (CUG) . 50
12.17 Personal Network Management (PNM) . 50
12.18 Three-Party (3PTY) . 50
12.19 Conference (CONF) . 50
12.20 Flexible Alerting (FA) . 51
12.21 Announcements . 51
12.21.1 General . 51
12.21.2 Providing announcements during the establishment of a communication session . 51
12.21.3 Providing announcements during an established communication session . 52
12.21.4 Providing announcements when communication request is rejected . 52
12.22 Advice Of Charge (AOC) . 52
12.23 Completion of Communications on Not Logged-in (CCNL) . 53
12.24 Unstructured Supplementary Service Data (USSD) . 53
13 Interoperability of IMS Centralized Services (ICS) over II-NNI . 54
13.1 General . 54
13.2 IMS Centralized Services (ICS) . 54
14 Interoperability of IMS Service Continuity over II-NNI . 55
14.1 General . 55
14.2 PS to CS Single Radio Voice Call Continuity (SRVCC) and Single Radio Video Call Continuity
(vSRVCC) . 55
14.2.1 Basic PS to CS SRVCC . 55
14.2.2 PS to CS SRVCC for calls in alerting phase . 55
14.2.3 Using the ATCF based architecture . 56
14.2.4 PS to CS SRVCC for originating calls in pre-alerting phase . 56
14.2.5 PS to CS SRVCC with the MSC server assisted mid-call feature . 56
14.3 Inter UE Transfer (IUT) . 56
14.4 MSC server assisted mid-call feature . 56
14.5 CS to PS Single Radio Voice Call Continuity (SRVCC) . 57
14.5.1 Basic CS to PS SRVCC . 57
14.5.2 CS to PS SRVCC for calls in alerting phase . 58
14.5.3 CS to PS SRVCC with the assisted mid-call feature . 58
14.6 PS to CS dual radio voice call continuity (DRVCC) . 58
14.6.1 Basic PS to CS DRVCC . 58
14.6.2 PS to CS DRVCC with the assisted mid-call feature . 58
14.6.3 PS to CS DRVCC for calls in alerting phase . 59
14.6.4 PS to CS DRVCC for originating calls in pre-alerting phase . 59
14.7 CS to PS Dual Radio Voice Call Continuity (DRVCC) . 59
14.7.1 Basic CS to PS DRVCC . 59
ETSI
3GPP TS 29.165 version 13.14.0 Release 13 5 ETSI TS 129 165 V13.14.0 (2020-01)
14.7.2 CS to PS DRVCC with the assisted mid-call feature . 59
14.7.3 CS to PS DRVCC for calls in alerting phase . 59
14.7.4 CS to PS DRVCC for originating calls in pre-alerting phase . 60
14.8 PS to PS access transfer . 60
15 Presence service . 60
15.0 General . 60
15.1 Subscription of presence information . 60
15.2 Watcher subscribing to Presence List . 61
15.3 Subscription to Watcher Information . 61
15.4 Subscription to state changes in XML documents . 62
15.5 Presence enhancements specified in Open Mobile Alliance (OMA) Release 1.1 . 62
15.5.1 General . 62
15.5.2 OMA subscription of presence information . 62
15.5.3 OMA watcher subscribing to Presence List . 62
15.5.4 OMA subscription to Watcher Information . 62
15.6 Presence enhancements specified in Open Mobile Alliance (OMA) Release 2.0 . 62
15.6.1 General . 62
15.6.2 OMA subscription of presence information . 63
15.6.3 OMA watcher subscribing to Presence List . 63
15.6.4 OMA subscription to Watcher Information . 63
15.6.5 Subscription to state changes in XML documents . 64
15.6.6 Void . 64
15.6.7 Void . 64
16 Messaging service . 64
16.1 General . 64
16.2 Page-mode messaging . 64
16.4 Session-mode messaging . 65
16.5 Session-mode messaging conferences . 65
17 Optimal Media Routeing . 65
17.1 General . 65
17.2 OMR related SDP attributes . 65
17.3 IP realm names . 65
18 Inter-UE transfer (IUT) . 66
18.1 General . 66
18.2 IUT without establishment of a collaborative session . 66
18.3 IUT using a collaborative session . 66
18.3.1 Collaborative session of participants of the same subscription . 66
18.3.2 Establishment of a collaborative session during session setup . 67
18.3.3 Assignment and transfer of control of a collaborative session . 67
18.3.4 Collaborative session of participants of different subscriptions . 67
18.4 Session replication / media replication . 68
18.4.1 Pull mode . 68
18.4.2 Push mode . 68
19 Roaming Architecture for Voice over IMS with Local Breakout . 68
20 Delivery of Media Resource Broker address information . 69
21 Overload control . 69
21.1 General . 69
21.2 Feedback based mechanism . 69
21.3 The load filter mechanism . 70
22 Delivery of original destination identity . 70
23 Telepresence using IMS . 70
24 Barring of premium rate numbers . 70
25 P-CSCF restoration . 70
25.1 General . 70
25.2 PCRF based P-CSCF restoration . 71
ETSI
3GPP TS 29.165 version 13.14.0 Release 13 6 ETSI TS 129 165 V13.14.0 (2020-01)
25.3 HSS based P-CSCF restoration . 71
26 Resource sharing . 71
27 Service access number translation . 71
28 Mission Critical Push-To-Talk (MCPTT) . 72
28.1 General . 72
28.2 Interoperability of MCPTT communication service over II-NNI. 72
28.2.1 MCPTT session establishment . 72
28.2.2 MBMS transmission usage and location procedures . 73
28.2.3 Affiliation procedure. 73
28.2.3.1 General . 73
28.2.3.2 Mandatory mode . 73
28.2.3.3 Negotiated mode . 74
28.2.4 Conference event package subscription . 74
28.2.5 MCPTT service settings . 75
28.2.6 Registration procedures . 75
28.2.7 Group regrouping . 75
Annex A (informative): Summary of SIP header fields . 76
Annex B (informative): Dynamic view of SIP header fields within SIP messages . 81
B.1 Scope . 81
B.2 Methodology . 81
B.3 ACK method . 83
B.4 BYE method . 84
B.5 CANCEL method . 88
B.6 INFO method . 89
B.7 INVITE method . 93
B.8 MESSAGE method . 100
B.9 NOTIFY method . 104
B.10 OPTIONS method . 107
B.11 PRACK method . 111
B.12 PUBLISH method . . 114
B.13 REFER method . 118
B.14 REGISTER method . 122
B.15 SUBSCRIBE method . 126
B.16 UPDATE method . 130
Annex C (informative): The list of option items for II-NNI . 135
C.1 Scope . 135
C.2 Format of option item table . 135
C.3 Option item table . 135
C.3.0 Supported II-NNI traversal scenarios . 135
C.3.1 Option item table common to roaming, non-roaming II-NNI and loopback traversal scenario . 136
C.3.2 Option item table specific to roaming II-NNI . 144
C.3.3 Option item table specific to non-roaming II-NNI and loopback traversal scenario . 147
Annex D: Change history . 150
History . 153
ETSI
3GPP TS 29.165 version 13.14.0 Release 13 7 ETSI TS 129 165 V13.14.0 (2020-01)
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 29.165 version 13.14.0 Release 13 8 ETSI TS 129 165 V13.14.0 (2020-01)
1 Scope
The objective of this document is to address the Inter-IMS Network to Network Interface (II-NNI) consisting of Ici and
Izi reference points between IMS networks in order to support end-to-end service interoperability.
The present document addresses the issues related to control plane signalling (3GPP usage of SIP and SDP protocols,
required SIP header fields) as well as other interconnecting aspects like security, numbering/naming/addressing and
user plane issues as transport protocol, media and codecs actually covered in a widespread set of 3GPP specifications. A
profiling of the Inter-IMS Network to Network Interface (II-NNI) is also provided.
Charging aspects are addressed as far as SIP signalling is concerned.
SIP signalling traversing the NNI between a CSCF and MRB, e.g. for media control or Voice Interworking with
Enterprise IP-PBX, and SIP signalling traversing the NNI on the Mr interface between the CSCF and the MRFC, or on
the Mr' interface between the AS and MRFC, or on the Rc interface between AS and MRB is not considered in the
present release of this specification.
SIP signalling traversing the NNI between an application server and the remaining IMS functional entities (e.g. for
MCPTT interface SIP-2 in figure 7.3.1-2 in 3GPP TS 23.179 [200]) is not considered in the present release of this
specification.
SIP signalling traversing the NNI between an ISC gateway and an AS in an enterprise network, e.g. for media control
and voice interworking with enterprise IP-PBX, on the ISC interface between the ISC gateway and the enterprise
network is not considered in the present release of this specification.
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 TR 21.905: "Vocabulary for 3GPP Specifications".
[2] IETF RFC 791: "Internet Protocol".
[3] 3GPP TS 23.002: "Network architecture".
[4] 3GPP TS 23.228: "IP Multimedia Subsystem (IMS); Stage 2".
[5] 3GPP TS 24.229: "Internet Protocol (IP) multimedia call control protocol based on Session
Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3".
[6] 3GPP TR 24.930: "Signalling flows for the session setup in the IP Multimedia core network
Subsystem (IMS) based on Session Initiation Protocol (SIP) and Session Description Protocol
(SDP); Stage 3".
[7] IETF RFC 2460: "Internet Protocol, Version 6 (IPv6) Specification".
[8] 3GPP TS 29.162: "Interworking between the IM CN subsystem and IP networks".
[9] 3GPP TS 22.228: "Service requirements for the IP multimedia core network subsystem".
[10] 3GPP TS 33.210: "3G security; Network Domain Security (NDS); IP network layer security".
ETSI
3GPP TS 29.165 version 13.14.0 Release 13 9 ETSI TS 129 165 V13.14.0 (2020-01)
[11] 3GPP TS 26.114: "IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and
interaction".
[12] ETSI TS 181 005 V1.1.1: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Services and Capabilities Requirements".
[13] IETF RFC 3261: "SIP: Session Initiation Protocol".
[14] IETF RFC 3966: "The tel URI for Telephone Numbers".
[15] IETF RFC 3860: "Common Profile for Instant Messaging (CPIM)".
[16] IETF RFC 3859: "Common Profile for Presence (CPP)".
[17] IETF RFC 4975: "The Message Session Relay Protocol (MSRP)".
[18] IETF RFC 3262: "Reliability of provisional responses in Session Initiation Protocol (SIP)".
[19] IETF RFC 3428: "Session Initiation Protocol (SIP) Extension for Instant Messaging".
[20] IETF RFC 6665: "SIP-Specific Event Notification".
NOTE: In earlier releases of this document the predecessor IETF RFC 3265 is used.
[21] IETF RFC 3903: "An Event State Publication Extension to the Session Initiation Protocol (SIP)".
[22] IETF RFC 3515: "The Session Initiation Protocol (SIP) REFER method".
[23] IETF RFC 3311: "The Session Initiation Protocol (SIP) UPDATE method".
[24] IETF RFC 7315: "Private Header (P-Header) Extensions to the Session Initiation Protocol (SIP)
for the 3GPP".
[24A] IETF RFC 7976: "Updates to Private Header (P-Header) Extension Usage in Session Initiation
Protocol (SIP) Requests and Responses".
[24B] IETF RFC 7913: "P-Access-Network-Info ABNF Update".
[25] IETF RFC 7044: "An Extension to the Session Initiation Protocol (SIP) for Request History
Information".
[26] IETF RFC 6050: "A Session Initiation Protocol (SIP) Extension for the Identification of Services".
[27] IETF RFC 4168: "The Stream Control Transmission Protocol (SCTP) as a Transport for the
Session Initiation Protocol (SIP)".
[28] Void.
[29] 3GPP TS 32.260: "Telecommunication management; Charging management; IP Multimedia
Subsystem (IMS) charging".
[30] 3GPP TS 22.173: "IP Multimedia Core Network Subsystem (IMS); Multimedia Telephony Service
and supplementary services; Stage 1".
[31] 3GPP TS 24.173: "IMS multimedia telephony communication service and supplementary services;
Stage 3".
[32] 3GPP TS 24.607: "Originating Identification Presentation (OIP) and Originating Identification
Restriction (OIR) using IP Multimedia (IM); Core Network (CN) subsystem".
[33] 3GPP TS 24.616: "Malicious Communication Identification (MCID) using IP Multimedia (IM)
Core Network (CN) subsystem".
[34] IETF RFC 3323: "A Privacy Mechanism for the Session Initiation Protocol (SIP)".
[35] 3GPP TS 23.003: "Numbering, addressing and identification".
ETSI
3GPP TS 29.165 version 13.14.0 Release 13 10 ETSI TS 129 165 V13.14.0 (2020-01)
[36] 3GPP TS 24.610: "Communication HOLD (HOLD) using IP Multimedia (IM) Core Network
(CN) subsystem".
[37] 3GPP TS 24.615: "Communication Waiting (CW) using IP Multimedia (IM) Core Network (CN)
subsystem".
[38] 3GPP TS 24.628: "Common Basic Communication procedures using IP Multimedia (IM) Co
...