ETSI TS 124 173 V15.4.0 (2019-10)

ETSI TS 124 173 V15.4.0 (2019-10)






TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
LTE;
5G;
IMS Multimedia telephony communication service and
supplementary services;
Stage 3
(3GPP TS 24.173 version 15.4.0 Release 15)

---------------------- Page: 1 ----------------------
3GPP TS 24.173 version 15.4.0 Release 15 1 ETSI TS 124 173 V15.4.0 (2019-10)



Reference
RTS/TSGC-0124173vf40
Keywords
5G,LTE,UMTS
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

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 2019.
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

---------------------- Page: 2 ----------------------
3GPP TS 24.173 version 15.4.0 Release 15 2 ETSI TS 124 173 V15.4.0 (2019-10)
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

---------------------- Page: 3 ----------------------
3GPP TS 24.173 version 15.4.0 Release 15 3 ETSI TS 124 173 V15.4.0 (2019-10)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 6
1 Scope . 7
2 References . 7
3 Definitions, symbols and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 9
4 Overview of multimedia telephony communication service and associated supplementary services
in the IP Multimedia (IM) Core Network (CN) subsystem . 10
4.1 General . 10
4.1A Roles . 10
4.1A.1 Multimedia telephony participant . 10
4.1A.2 Multimedia telephony application server . 10
4.2 Overview of basic communication part . 10
4.3 Overview of supplementary services part . 11
5 Basic Communication . 11
5.1 IMS communication service identifier . 11
5.2 Session control procedures . 11
5.3 Interworking . 12
5.4 Call progress indications . 12
6 Supplementary services and enhancements. 12
6.1 High level requirements . 12
6.2 Originating Identification Presentation (OIP) . 12
6.3 Originating Identification Restriction (OIR) . 12
6.4 Terminating Identification Presentation (TIP). 13
6.5 Terminating Identification Restriction (TIR) . 13
6.6 Communication Diversion (CDIV) . 13
6.7 Communication Hold (HOLD). 13
6.8 Communication Barring (CB) . 13
6.9 Message Waiting Indication (MWI) . 13
6.10 Conference (CONF) . 13
6.11 Explicit Communication Transfer (ECT) . 13
6.12 XCAP over Ut interface for Manipulating NGN Services . 13
6.13 Advice Of Charge (AOC) . 13
6.14 Closed User Groups (CUG). 13
6.15 Three-Party (3PTY) . 13
6.16 Flexible Alerting (FA) . 14
6.17 Communication Waiting (CW) . 14
6.18 Completion of Communications to Busy Subscriber (CCBS) Completion of Communications by No
Reply (CCNR) . 14
6.19 Customized Alerting Tones (CAT) . 14
6.20 Customized Ringing Signal (CRS) . 14
6.21 Personal Network Management (PNM) . 14
6.22 Unstructured Supplementary Service Data (USSD) . 14
6.23 Enhanced Calling Name (eCNAM) . 14
Annex A (informative): Void . 15
Annex B (informative): Void. . 15
Annex C (informative): Void . 15
ETSI

---------------------- Page: 4 ----------------------
3GPP TS 24.173 version 15.4.0 Release 15 4 ETSI TS 124 173 V15.4.0 (2019-10)
Annex D (informative): Void . 15
Annex E (informative): Void . 15
Annex F (informative): Void . 15
Annex G (informative): Void . 15
Annex H (informative): Void . 15
Annex I (informative): Void . 16
Annex J (normative): IP-Connectivity Access Network specific concepts when using EPS to
access IM CN subsystem . 17
J.1 Scope . 17
J.2 EPS aspects when connected to the IM CN subsystem . 17
J.2.1 Procedures at the UE . 17
J.2.1.1 Service Specific Access Control . 17
J.2.1.2 Smart Congestion Mitigation . 18
J.2.1.3 MMTEL request timeouts . 19
J.2.1.4 Abnormal cases . 19
J.3 Application usage of SIP . 20
J.3.1 Procedures at the UE . 20
J.3.1.1 3GPP PS data off . 20
J.3.1.1.1 General . 20
J.3.1.1.2 Enforcement . 20
J.3.2 Procedures at the multimedia telephony application server . 22
J.3.2.1 3GPP PS data off . 22
Annex K (normative): IP-Connectivity Access Network specific concepts when using GPRS
to access IM CN subsystem . 24
K.1 Scope . 24
K.2 GPRS (Iu mode only) aspects when connected to the IM CN subsystem . 24
K.2.1 Procedures at the UE . 24
K.2.1.1 General . 24
K.2.1.2 Application specific Congestion control for Data Communication (ACDC) procedure. 24
K.3 Application usage of SIP . 25
K.3.1 Procedures at the UE . 25
K.3.1.1 3GPP PS data off . 25
K.3.1.1.1 General . 25
K.3.1.1.2 Enforcement . 25
K.3.2 Procedures at the multimedia telephony application server . 26
K.3.2.1 3GPP PS data off . 26
Annex L (normative): Timers . 27
Annex M (normative): IP-Connectivity Access Network specific concepts when using 5GS to
access IM CN subsystem . 28
M.1 Scope . 28
M.2 5GS aspects when connected to the IM CN subsystem . 28
M.2.1 Procedures at the UE . 28
M.2.1.1 Unified Access Control . 28
M.2.1.2 MMTEL request timeouts . 29
M.2.1.2A Registration and authentication. 29
M.2.1.3 Abnormal cases . 29
M.3 Application usage of SIP . 30
M.3.1 Procedures at the UE . 30
ETSI

---------------------- Page: 5 ----------------------
3GPP TS 24.173 version 15.4.0 Release 15 5 ETSI TS 124 173 V15.4.0 (2019-10)
M.3.1.1 3GPP PS data off . 30
M.3.1.1.1 General . 30
M.3.1.1.2 Enforcement . 30
M.3.1.2 Establishing an MMTEL session . 31
M.3.2 Procedures at the multimedia telephony application server . 32
M.3.2.1 3GPP PS data off . 32
Annex N (informative): Change history . 33
History . 36

ETSI

---------------------- Page: 6 ----------------------
3GPP TS 24.173 version 15.4.0 Release 15 6 ETSI TS 124 173 V15.4.0 (2019-10)
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

---------------------- Page: 7 ----------------------
3GPP TS 24.173 version 15.4.0 Release 15 7 ETSI TS 124 173 V15.4.0 (2019-10)
1 Scope
The present document provides the protocol details for multimedia telephony communication service and associated
supplementary services in the IP Multimedia (IM) Core Network (CN) subsystem based on the requirements from
3GPP TS 22.173 [2].
Multimedia telephony and supplementary services allow users to establish communications between them and enrich
that by enabling supplementary services.
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] 3GPP TS 22.173: "IP Multimedia Core Network Subsystem (IMS) Multimedia Telephony Service
and supplementary services; Stage 1".
[3] 3GPP TS 24.604: "Communication Diversion (CDIV); Protocol specification using IP Multimedia
(IM) Core Network (CN) subsystem; Protocol specification ".
[4] 3GPP TS 24.605: "Conference (CONF) using IP Multimedia (IM) Core Network (CN) subsystem;
Protocol specification".
[5] 3GPP TS 24.606: "Message Waiting Indication (MWI) using IP Multimedia (IM) Core Network
(CN) subsystem; Protocol specification".
[6] 3GPP TS 24.607: "Originating Identification Presentation (OIP) and Originating Identification
Restriction (OIR) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol
specification".
[7] 3GPP TS 24.608: "Terminating Identification Presentation (TIP) and Terminating Identification
Restriction (TIR) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol
specification".
[8] 3GPP TS 24.610: "Communication HOLD (HOLD) using IP Multimedia (IM) Core Network
(CN) subsystem; Protocol specification".
[9] 3GPP TS 24.611: "Anonymous Communication Rejection (ACR) and Communication Barring
(CB) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification".
[10] 3GPP TS 24.629: "Explicit Communication Transfer (ECT) using IP Multimedia (IM) Core
Network (CN) subsystem; Protocol specification".
[11] 3GPP TS 24.623: "Extensible Markup Language (XML) Configuration Access Protocol (XCAP)
over the Ut interface for Manipulating Simulation Services".
[12] 3GPP TS 26.114: "IP Multimedia Subsystem (IMS); Multimedia telephony; Media handling and
interaction".
[13] 3GPP TS 24.229: "Internet Protocol (IP) multimedia call control protocol based on Session
Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3".
ETSI

---------------------- Page: 8 ----------------------
3GPP TS 24.173 version 15.4.0 Release 15 8 ETSI TS 124 173 V15.4.0 (2019-10)
[14] 3GPP TS 24.247: "Messaging using the IP Multimedia (IM) Core Network (CN) subsystem;
Stage 3".
[15] Void
[16] IETF RFC 3841 (August 2004): "Caller Preferences for the Session Initiation Protocol (SIP)".
[17] 3GPP TS 24.647: "Advice Of Charge (AOC) using IP Multimedia (IM)Core Network (CN)
subsystem; Protocol Specification".
[18] 3GPP TS 24.654: "Closed User Group (CUG) using IP Multimedia (IM) Core Network (CN)
subsystem, Protocol Specification".
[19] 3GPP TS 24.239: "IP Multimedia Subsystem (IMS) Flexible alerting supplementary service".
[20] 3GPP TS 24.238: "Session Initiation Protocol (SIP) based user configuration; stage 3".
[21] 3GPP2 C.S0055-A: "Packet Switched Video Telephony Services".
[22] ETSI TS 181 005: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Service and Capability Requirements".
[23] 3GPP TS 24.615: "Communication Waiting (CW) using IP Multimedia (IM) Core Network (CN)
subsystem, Protocol Specification".
[24] 3GPP TS 24.642: "Completion of Communications to Busy Subscriber (CCBS) Completion of
Communications by No Reply (CCNR) using IP Multimedia (IM) Core Network (CN) subsystem;
Protocol specification".
[25] 3GPP TS 24.182: "IP Multimedia Subsystem (IMS) Customized Alerting Tones (CAT); Protocol
specification".
[26] 3GPP TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource
Control (RRC); Protocol specification".
[27] 3GPP TS 24.183: "IP Multimedia Subsystem (IMS) Customized Ringing Signal (CRS); Protocol
specification".
[28] IETF RFC 3362 (August 2002): "Real-time Facsimile (T.38) - image/t38 MIME Sub-type
Registration".
[29] 3GPP TS 24.259: "Personal Network Management (PNM); Stage 3".
[30] 3GPP TS 24.390: "Unstructured Supplementary Service Data (USSD) using IP Multimedia (IM)
Core Network (CN) subsystem IMS; Stage 3".
[31] IETF RFC 6809 (November 2012): "Mechanism to Indicate Support of Features and Capabilities
in the Session Initiation Protocol (SIP)".
[32] 3GPP TS 24.167: "3GPP IMS Management Object (MO); Stage 3".
[33] 3GPP TS 23.221: "Architectural requirements".
[34] Void.
[35] 3GPP TS 24.628: "Common Basic Communication procedures using IP Multimedia (IM) Core
Network (CN) subsystem; Protocol Specification".
[36] 3GPP TS 24.275: "Management Object (MO) for basic communication part of IMS multimedia
telephony (MMTEL) communication service".
[37] 3GPP TS 22.011: "Service accessibility".
[38] 3GPP TS 31.102: "Characteristics of the Universal Subscriber Identity Module (USIM)
application".
ETSI

---------------------- Page: 9 ----------------------
3GPP TS 24.173 version 15.4.0 Release 15 9 ETSI TS 124 173 V15.4.0 (2019-10)
[39] 3GPP TS 24.196: "Technical Specification Group Core Network and Terminals; Enhanced Calling
Name".
[40] 3GPP TS 24.008: "Mobile Radio Interface Layer 3 specification; Core Network Protocols;
Stage 3".
[41] 3GPP TS 23.122: "Non-Access-Stratum functions related to Mobile Station (MS) in idle mode".
[42] 3GPP TS 24.501: "Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in 3GPP TS 21.905 [1] apply.
MMTEL voice: a multimedia telephony communication session as described in subclause 5.2 with only audio or only
real-time text or only both audio and real-time text.
MMTEL video: a multimedia telephony communication session as described in subclause 5.2 with video.

For the purposes of the present document, the following terms and definitions given in 3GPP TS 22.011 [37] apply:
3GPP PS data off
3GPP PS data off exempt service

For the purposes of the present document, the following terms and definitions given in 3GPP TS 24.229 [13] apply:
3GPP PS data off status
For the purposes of the present document, the following terms and definitions given in 3GPP TS 23.122 [41] apply:
Equivalent Home PLMN (EHPLMN)
Home PLMN (HPLMN)
Visited PLMN (VPLMN)
For the purposes of the present document, the following terms and definitions given in 3GPP TS 24.501 [42] apply:
NG-RAN
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
CS Circuit Switched
CN Core Network
ICSI IMS Communication Service Identifier
IP Internet Protocol
IM IP Multimedia
MMTEL Multimedia
...