ETSI TS 121 202 V14.2.0 (2026-02)

Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specifications and Technical Reports relating to the Common IP Multimedia Subsystem (IMS) (3GPP TS 21.202 version 14.2.0 Release 14)

RTS/TSGS-0021202ve20

General Information

• Status: Not Published
• Technical Committee: 3GPP SA - Technical Specification Group Services and System Aspects
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Completion Date: 17-Feb-2026

Standards Content (Sample)

TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
Technical Specifications and Technical Reports relating to the
Common IP Multimedia Subsystem (IMS)
(3GPP TS 21.202 version 14.2.0 Release 14)

3GPP TS 21.202 version 14.2.0 Release 14 1 ETSI TS 121 202 V14.2.0 (2026-02)

Reference
RTS/TSGS-0021202ve20
Keywords
GSM,LTE,UMTS
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© ETSI 2026.
All rights reserved.
ETSI
3GPP TS 21.202 version 14.2.0 Release 14 2 ETSI TS 121 202 V14.2.0 (2026-02)
Intellectual Property Rights
Essential patents
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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.
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 at 3GPP to ETSI numbering cross-referencing.
Modal verbs terminology
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ETSI
3GPP TS 21.202 version 14.2.0 Release 14 3 ETSI TS 121 202 V14.2.0 (2026-02)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 4
1 Scope . 5
2 References . 5
3 Definitions, symbols and abbreviations . 5
3.1 Definitions . 5
3.2 Symbols . 5
3.3 Abbreviations . 5
4 General . 5
5 Specifications and Reports . 6
Annex A (informative): void . 10
Annex B (informative): void . 10
Annex C (informative): Change history . 11
History . 12

ETSI
3GPP TS 21.202 version 14.2.0 Release 14 4 ETSI TS 121 202 V14.2.0 (2026-02)
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 21.202 version 14.2.0 Release 14 5 ETSI TS 121 202 V14.2.0 (2026-02)
1 Scope
The present document identifies the 3GPP Technical Specifications and Technical Reports specifically relating to the
Common IP Multimedia Subsystem (IMS) maintained by 3GPP. Standards organizations adopting the Common IP
Multimedia Subsystem (IMS) might not need to use all listed specifications.
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 TR 21.900: "Technical specification group working methods"
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in TR 21.905 [1] apply.
3.2 Symbols
(None)
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in TR 21.905 [1] and the following apply. An
abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in
TR 21.905 [1].
NGN Next Generation Network
R1 Release 1
R2 Release 2
TISPAN Telecommunications and Internet converged Services and Protocols for Advanced Networks

4 General
The numbering scheme for specifications is described in 3GPP TR 21.900 [2].
ETSI
3GPP TS 21.202 version 14.2.0 Release 14 6 ETSI TS 121 202 V14.2.0 (2026-02)
5 Specifications and Reports
NOTE 1: The "for publication?" column of the table below indicates whether or not the documents are intended for
adoption by the partner Standards Development Organizations as their own publications. Those marked
"no" are internal working documents of the 3GPP TSGs.
NOTE 2: Some of the algorithm specifications in the 35.-series are available only under licence.
NOTE 3: "Type" indicates Technical Specification (TS) or Technical Report (TR).
NOTE 4: For definition of "freezing" of specifications (last two columns), see 3GPP TR 21.900 [2].
The table below contains all Common IMS specs pertaining to Release 14.
ETSI
3GPP TS 21.202 version 14.2.0 Release 14 7 ETSI TS 121 202 V14.2.0 (2026-02)
For
Type Number Title Group
publication?
TS 21.111 USIM and IC card requirements C6 Yes
TR 21.905 Vocabulary for 3GPP Specifications SP Yes
TS 22.030 Man-Machine Interface (MMI) of the User Equipment (UE) S1 Yes
TS 22.041 Operator Determined Barring (ODB) S1 Yes
TS 22.071 Location Services (LCS); Service description; Stage 1 S1 Yes
TS 22.101 Service aspects; Service principles S1 Yes
TS 22.105 Services and service capabilities S1 Yes
TS 22.115 Service aspects; Charging and billing S1 Yes
TS 22.140 Multimedia Messaging Service (MMS); Stage 1 S1 Yes
TS 22.141 Presence service; Stage
...