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ITU-T Liaison Statements
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ITU-T Liaison Statements
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Incoming liaison statements allocated to an ITU-T Study Group meeting (
*
)
ITU-T Study Group
Any
ITU-T TSAG [Telecommunication Standardization Advisory Group]
ITU-T SG2 [Operational aspects of telecommunications and ICTs]
ITU-T SG3 [Tariff and accounting principles and international telecommunication/ICT economic and policy issues]
ITU-T SG5 [Environment, climate action, circular economy and electromagnetic fields]
ITU-T SG11 [Signalling requirements, protocols, test specifications and combating counterfeit telecommunication/ICT devices]
ITU-T SG12 [Performance, quality of service (QoS) and quality of experience (QoE)]
ITU-T SG13 [Future networks and emerging network technologies]
ITU-T SG15 [Networks, technologies and infrastructures for transport, access and home]
ITU-T SG17 [Security]
ITU-T SG20 [Internet of Things, digital twins and smart sustainable cities and communities]
ITU-T SG21 [Technologies for multimedia, content delivery and cable television]
Meeting
Geneva, 26-30 January 2026
Geneva, 26-30 May 2025
Geneva, 29 July - 2 August 2024
Geneva, 22-26 January 2024
Geneva, 30 May - 2 June 2023
Geneva, 12-16 December 2022
E-Meeting, 10-17 January 2022
E-Meeting, 25-29 October 2021
E-Meeting, 11-18 January 2021
E-Meeting, 21-25 September 2020
Geneva, 10-14 February 2020
Geneva, 23-27 September 2019
Geneva, 10-14 December 2018
Geneva, 26 February - 2 March 2018
Geneva, 1-4 May 2017
Geneva, 18-22 July 2016
Geneva, 1-5 February 2016
Geneva, 2-5 June 2015
Geneva, 17-20 June 2014
Geneva, 4-7 June 2013
Geneva, 2-4 July 2012
Geneva, 10-13 January 2012
Geneva, 8-11 February 2011
Geneva, 8-11 February 2010
Geneva, 28-30 April 2009
Geneva, 2-9 July 2008
Geneva, 3-7 December 2007
Geneva, 26 February - 1 March 2007
Geneva, 3-7 July 2006
Type of action
Any
Action
Comment
Information
With title containing all these words
Full search in ITU-T LSs Database
Total found:
43
Page Size:
10
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SG20-LS111
- [
https://www.itu.int/ifa/t/2025/ls/sg20/sp18-sg20-00111.docx
]
LS on ITU-T SG20 Lead Study Group Report
Approved on 2025-12-04
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0258
Meeting:
Geneva, 26-30 January 2026
JCA-MV-LS1
- [
https://www.itu.int/ifa/t/2025/ls/jca-mv/sp18-jca-mv-00001.docx
]
LS on Invitation to Nominate Representatives to ITU-T JCA-MV and Provide Input to the Metaverse Standardization Roadmap
Approved on 2025-11-27
.
For action to:
All questions
For information to:
All questions
Deadline:
2026-03-31
Submitted as:
T25-TSAG-260126-TD-GEN-0257
Meeting:
Geneva, 26-30 January 2026
SG11-LS54
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00054.zip
]
LS on outcomes of ITU Workshop on Securing Telephone Networks
Approved on 2025-11-26
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0253
Meeting:
Geneva, 26-30 January 2026
SG11-LS58
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00058.zip
]
LS/r on E.RAA4Q.TSCA “Registration Authority Assignment criteria to issue digital public certificates for use by Q.TSCA” (reply to SG2-LS63)
Approved on 2025-11-26
in response to
SG2-LS63
.
For action to:
-
For information to:
All questions
Deadline:
2026-02-27
Submitted as:
T25-TSAG-260126-TD-GEN-0254
Meeting:
Geneva, 26-30 January 2026
SG11-LS59
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00059.zip
]
LS on draft new Recommendation Q.TSCA “Requirements for issuing End-Entity and Certification Authority public-key certificates for enabling trustable signalling interconnection between network entities”
Approved on 2025-11-26
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0255
Meeting:
Geneva, 26-30 January 2026
SG11-LS60
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00060.docx
]
LS/r on comments for A.RA: Requirements for issuing End-Entity and Certification Authority public-key certificates for enabling trustable signalling interconnection between network entities (reply to TSAG-LS2)
Approved on 2025-11-26
in response to
TSAG-LS2
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0256
Meeting:
Geneva, 26-30 January 2026
SG3-LS14
- [
https://www.itu.int/ifa/t/2025/ls/sg3/sp18-sg3-00014.docx
]
LS/r on ITU-T Standards Success Stories (reply to TSAG-LS5 and TSAG-LS14)
Approved on 2025-11-07
in response to
TSAG-LS5
,
TSAG-LS14
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0236
Meeting:
Geneva, 26-30 January 2026
SG13-LS101
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00101.docx
]
LS on revision of JCA-AI/ML ToR and the name
Approved on 2025-11-06
.
For action to:
All questions
For information to:
-
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0243
Meeting:
Geneva, 26-30 January 2026
SG13-LS102
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00102.docx
]
LS on revision of JCA-IMT2020 name and ToR
Approved on 2025-11-06
.
For action to:
All questions
For information to:
-
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0244
Meeting:
Geneva, 26-30 January 2026
SG5-LS45
- [
https://www.itu.int/ifa/t/2025/ls/sg5/sp18-sg5-00045.docx
]
LS/r on lead study group concept (reply to TSAG-LS4)
Approved on 2025-11-06
in response to
TSAG-LS4
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0247
Meeting:
Geneva, 26-30 January 2026
SG5-LS51
- [
https://www.itu.int/ifa/t/2025/ls/sg5/sp18-sg5-00051.docx
]
LS/r on SCV activity in Study Group 2 (reply to SG2-LS69)
Approved on 2025-11-06
in response to
SG2-LS69
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0248
Meeting:
Geneva, 26-30 January 2026
SG15-LS52
- [
https://www.itu.int/ifa/t/2025/ls/sg15/sp18-sg15-00052.zip
]
LS on OTNT Standardization Work Plan Issue 36
Approved on 2025-10-24
.
For action to:
All questions
For information to:
-
Deadline:
2026-06-01
Submitted as:
T25-TSAG-260126-TD-GEN-0227
Meeting:
Geneva, 26-30 January 2026
SG15-LS51
- [
https://www.itu.int/ifa/t/2025/ls/sg15/sp18-sg15-00051.docx
]
LS/r on the latest updates of Access Network Transport (ANT) and Home Network Transport (HNT) Standards Overviews and Work Plans (reply to IEEE802.3-LS152)
Approved on 2025-10-24
in response to
IEEE 802.3-LS152
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0228
Meeting:
Geneva, 26-30 January 2026
SG15-LS81
- [
https://www.itu.int/ifa/t/2025/ls/sg15/sp18-sg15-00081.docx
]
LS/r to TSAG on lead study group concept (reply to TSAG-LS4)
Approved on 2025-10-24
in response to
TSAG-LS4
.
For action to:
-
For information to:
All questions
Deadline:
2026-06-15
Submitted as:
T25-TSAG-260126-TD-GEN-0229
Meeting:
Geneva, 26-30 January 2026
SG15-LS82
- [
https://www.itu.int/ifa/t/2025/ls/sg15/sp18-sg15-00082.docx
]
LS/r to TSAG on the establishment of Joint Correspondence Groups (reply to TSAG-LS11 and TSAG-LS12)
Approved on 2025-10-24
in response to
TSAG-LS11
,
TSAG-LS12
.
For action to:
All questions
For information to:
-
Deadline:
2026-06-15
Submitted as:
T25-TSAG-260126-TD-GEN-0230
Meeting:
Geneva, 26-30 January 2026
SG15-LS83
- [
https://www.itu.int/ifa/t/2025/ls/sg15/sp18-sg15-00083.docx
]
LS on submission deadline for documents for determination, consent, or agreement in Rec. A.1
Approved on 2025-10-24
.
For action to:
All questions
For information to:
-
Deadline:
2026-06-15
Submitted as:
T25-TSAG-260126-TD-GEN-0232
Meeting:
Geneva, 26-30 January 2026
SG15-LS84
- [
https://www.itu.int/ifa/t/2025/ls/sg15/sp18-sg15-00084.zip
]
LS/r to TSAG on the development of ITU-T Standards Success Stories (reply to TSAG-LS5 and TSAG-LS14)
Approved on 2025-10-24
in response to
TSAG-LS5
,
TSAG-LS14
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0231
Meeting:
Geneva, 26-30 January 2026
SG15-LS85
- [
https://www.itu.int/ifa/t/2025/ls/sg15/sp18-sg15-00085.docx
]
LS/r to TSAG on the activities and studies on sustainable digital transformation (reply to TSAG-LS7)
Approved on 2025-10-24
in response to
TSAG-LS7
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0234
Meeting:
Geneva, 26-30 January 2026
SG15-LS86
- [
https://www.itu.int/ifa/t/2025/ls/sg15/sp18-sg15-00086.docx
]
LS/r to TSAG on streamlining JCA operations (reply to TSAG-LS9)
Approved on 2025-10-24
in response to
TSAG-LS9
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0233
Meeting:
Geneva, 26-30 January 2026
SG15-LS87
- [
https://www.itu.int/ifa/t/2025/ls/sg15/sp18-sg15-00087.docx
]
LS/r to TSAG on the Terms of reference ITU-T SGs at the New work item opening (reply to TSAG-LS10)
Approved on 2025-10-24
in response to
TSAG-LS10
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-TSAG-260126-TD-GEN-0235
Meeting:
Geneva, 26-30 January 2026
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