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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, 9-17 June 2026
Geneva, 9-18 September 2025
E-Meeting, 25 March 2025
Geneva, 14-23 January 2025
E-Meeting, 29 August 2024
Geneva, 16-25 April 2024
Mexico City, 19-28 September 2023
Geneva, 18-26 January 2023
Geneva, 7-17 June 2022
E-Meeting, 12-21 October 2021
E-Meeting, 4-13 May 2021
E-Meeting, 6-7 January 2021
E-Meeting, 7-11 September 2020
E-Meeting, 15-24 April 2020
Geneva, 26 November - 5 December 2019
Stockholm, 4 September 2019
Geneva, 7-16 May 2019
Geneva, 27 November - 6 December 2018
Geneva, 1-10 May 2018
Geneva, 15 February 2018
Geneva, 19-28 September 2017
Geneva, 10-19 January 2017
Munich, 20 October 2016
Geneva, 7-16 June 2016
Geneva, 12-21 January 2016
Geneva, 5-14 May 2015
Herzogenrath, 12 December 2014
Geneva, 2-11 September 2014
Solothurn, 25 March 2014
Geneva, 3-12 December 2013
Geneva, 19-28 March 2013
Stockholm, 7 September 2012
Geneva, 29 May - 7 June 2012
Geneva, 31 October - 9 November 2011
Geneva, 18-27 January 2011
Berlin, 17 September 2010
Geneva, 18-27 May 2010
Geneva, 3-12 November 2009
Geneva, 10-19 March 2009
Geneva, 22-30 May 2008
Geneva, 2-11 October 2007
Geneva, 16-25 January 2007
Geneva, 5-13 June 2006
Type of action
Any
Action
Comment
Information
With title containing all these words
Full search in ITU-T LSs Database
Total found:
31
Page Size:
10
20
50
100
1
2
FG-AINN-LS4
- [
https://www.itu.int/ifa/t/2025/ls/fg-ainn/sp18-fg-ainn-00004.DOCX
]
LS on information on Focus Group on Artificial Intelligence Native for Telecommunication Networks (FG-AINN) 2026 work plan
Approved on 2025-12-03
.
For action to:
-
For information to:
Q1/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0359
Meeting:
Geneva, 9-17 June 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:
Q1/12
For information to:
-
Deadline:
2026-03-31
Submitted as:
T25-SG12-260609-TD-GEN-0354
Meeting:
Geneva, 9-17 June 2026
SG11-LS63
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00063.docx
]
LS on call for updates for pilot projects and reference table of ITU-T Recommendations suitable for C&I testing
Approved on 2025-11-26
.
For action to:
Q1/12
For information to:
-
Deadline:
2026-02-27
Submitted as:
T25-SG12-260609-TD-GEN-0353
Meeting:
Geneva, 9-17 June 2026
SG11-LS65
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00065.docx
]
LS on Questionnaire on the use of ITU-T Recommendations in national conformity assessment framework, including type approval
Approved on 2025-11-26
.
For action to:
-
For information to:
Q1/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0358
Meeting:
Geneva, 9-17 June 2026
SG11-LS67
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00067.docx
]
LS/r on the term "worklet" and its definition developed by ITU-T SG5 (reply to SCV-LS62 and SG5-LS49)
Approved on 2025-11-26
in response to
SCV-LS62
,
SG5-LS49
.
For action to:
-
For information to:
Q2/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0363
Meeting:
Geneva, 9-17 June 2026
3GPP TSG SA5-S5-255485
- [
https://www.itu.int/ifa/t/2025/ls/3gpptsgsa5/sp18-3gpptsgsa5-00071.docx
]
LS/r on Invitation to update the information in the IMT-2020 and beyond roadmap (reply to JCA-IMT2020-LS17)
Approved on 2025-11-21
in response to
JCA-IMT2020-LS17
.
For action to:
-
For information to:
Q1/12
Deadline:
2026-02-09
Submitted as:
T25-SG12-260609-TD-GEN-0355
Meeting:
Geneva, 9-17 June 2026
BROADBAND FORUM-LIAISE-725
- [
https://www.itu.int/ifa/t/2025/ls/broadbandforum/sp18-broadbandforum-00187.docx
]
LS on recently published Broadband Forum Work Items (November 2025)
Approved on 2025-11-20
.
For action to:
-
For information to:
Q1/12; Q2/12; Q7/12; Q9/12; Q10/12; Q13/12; Q14/12; Q15/12; Q17/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0356
Meeting:
Geneva, 9-17 June 2026
BROADBAND FORUM-LS188
- [
https://www.itu.int/ifa/t/2025/ls/broadbandforum/sp18-broadbandforum-00188.docx
]
LS on BBF Service Requirements Work Area, Service and QoE Definitions
Approved on 2025-11-20
.
For action to:
-
For information to:
Q1/12; Q2/12; Q7/12; Q9/12; Q10/12; Q13/12; Q14/12; Q15/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0357
Meeting:
Geneva, 9-17 June 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:
-
For information to:
Q1/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0345
Meeting:
Geneva, 9-17 June 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:
-
For information to:
Q1/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0346
Meeting:
Geneva, 9-17 June 2026
SG13-LS103
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00103.zip
]
LS on AI agent related activities in ITU-T SG13
Approved on 2025-11-06
.
For action to:
-
For information to:
Q1/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0347
Meeting:
Geneva, 9-17 June 2026
SG13-LS120
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00120.zip
]
LS on initiation of new work item ITU-T Y.FMSC-AEEE “Fixed, mobile and satellite convergence – Framework for AI-based energy efficiency enhancement for IMT-2020 networks and beyond”
Approved on 2025-11-06
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0348
Meeting:
Geneva, 9-17 June 2026
SG13-LS130
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00130.zip
]
LS on initiation of new work item ITU-T Y.FMSC-ANFO “Fixed, mobile and satellite convergence – AI-based network function offloading for IMT-2020 networks and beyond”
Approved on 2025-11-06
.
For action to:
-
For information to:
Q17/12
Deadline:
2026-04-30
Submitted as:
T25-SG12-260609-TD-GEN-0349
Meeting:
Geneva, 9-17 June 2026
SG5-LS47
- [
https://www.itu.int/ifa/t/2025/ls/sg5/sp18-sg5-00047.docx
]
LS/r on New Study Group 12 work item on Quality of Experience and Energy (QoE2) Measures and Metrics (reply to SG12-LS10)
Approved on 2025-11-06
in response to
SG12-LS10
.
For action to:
-
For information to:
Q14/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0350
Meeting:
Geneva, 9-17 June 2026
SG5-LS49
- [
https://www.itu.int/ifa/t/2025/ls/sg5/sp18-sg5-00049.docx
]
LS/r on “worklet” and its definition developed by ITU-T Study Group 5 (reply to SCV-LS62)
Approved on 2025-11-06
in response to
SCV-LS62
.
For action to:
-
For information to:
Q2/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0351
Meeting:
Geneva, 9-17 June 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:
Q2/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0352
Meeting:
Geneva, 9-17 June 2026
JCA-IMT2020-LS18
- [
https://www.itu.int/ifa/t/2025/ls/jca-imt2020/sp18-jca-imt2020-00018.docx
]
LS on Invitation to update the information in the IMT-2020 and beyond roadmap
Approved on 2025-10-29
.
For action to:
Q1/12
For information to:
-
Deadline:
2026-02-16
Submitted as:
T25-SG12-260609-TD-GEN-0340
Meeting:
Geneva, 9-17 June 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:
Q1/12
For information to:
-
Deadline:
2026-06-01
Submitted as:
T25-SG12-260609-TD-GEN-0338
Meeting:
Geneva, 9-17 June 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:
Q1/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0339
Meeting:
Geneva, 9-17 June 2026
SG21-LS109
- [
https://www.itu.int/ifa/t/2025/ls/sg21/sp18-sg21-00109.zip
]
LS on new draft Technical Paper HSTP.MIHS-guide "Guidelines of Multimedia Integration, Handling and Streaming (MIHS) service model and framework"
Approved on 2025-10-17
.
For action to:
-
For information to:
Q13/12
Deadline:
-
Submitted as:
T25-SG12-260609-TD-GEN-0336
Meeting:
Geneva, 9-17 June 2026
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