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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 (IoT) and smart cities and communities (SC&C)]
ITU-T SG21 [Technologies for multimedia, content delivery and cable television]
Meeting
Geneva, 29 October - 6 November 2025
Geneva, 3-12 June 2025
Wroclaw, 17-21 June 2024
Geneva, 13-22 November 2023
Sophia Antipolis, 13-23 June 2023
E-Meeting, 9 February 2023
E-Meeting, 5 December 2022
Rome, 17-27 October 2022
Geneva, 21 June - 1 July 2022
E-Meeting, 30 November - 10 December 2021
E-Meeting, 11-20 May 2021
E-Meeting, 19-23 October 2020
E-Meeting, 11-20 May 2020
Geneva, 16-20 September 2019
Geneva, 13-22 May 2019
Geneva, 11-21 September 2018
Geneva, 21-25 May 2018
Geneva, 5-9 March 2018
Sophia Antipolis, 13-22 November 2017
Geneva, 15-24 May 2017
Geneva, 10-14 October 2016
Kuala Lumpur, 20-27 April 2016
Geneva, 12-23 October 2015
Kochi, 8-19 December 2014
Geneva, 23-29 July 2014
Geneva, 19-23 May 2014
Lima, 2-13 December 2013
Geneva, 29 January - 7 February 2013
Geneva, 8-12 October 2012
Geneva, 11-19 April 2012
Seoul, 20-28 September 2011
Geneva, 27 April - 5 May 2011
Geneva, 23 November - 1 December 2010
Rome, 1 October 2010
Buenos Aires, 12-16 April 2010
Geneva, 19-22 January 2010
Geneva, 12-16 October 2009
Geneva, 25-29 May 2009
Geneva, 24-28 November 2008
Geneva, 25-29 February 2008
Geneva, 19-23 November 2007
Beijing, 14-18 May 2007
Geneva, 18-22 September 2006
Osaka, 22-26 May 2006
Type of action
Any
Action
Comment
Information
With title containing all these words
Full search in ITU-T LSs Database
Total found:
30
Page Size:
10
20
50
100
1
2
CCT-Documents CCT/181 and CCT/189
- [
https://www.itu.int/ifa/t/2025/ls/cct/sp18-cct-00007.docx
]
LS on request for feedback on the term “multiple-input and multiple-output (MIMO)” and its definition developed by ITU-R Working Party 5C and submitted to the CCT for validation
Approved on 2025-10-02
.
For action to:
-
For information to:
Q3/5; Q4/5; Q8/5
Deadline:
2025-12-09
Submitted as:
T25-SG05-251029-TD-GEN-0616
Meeting:
Geneva, 29 October - 6 November 2025
SG12-LS10
- [
https://www.itu.int/ifa/t/2025/ls/sg12/sp18-sg12-00010.zip
]
LS on New SG12 work item on Quality of Experience and Energy (QoE2) Measures and Metrics
Approved on 2025-09-18
.
For action to:
Q6/5
For information to:
-
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0609
Meeting:
Geneva, 29 October - 6 November 2025
ITU-R WP 6A-Document 6A/TEMP/93
- [
https://www.itu.int/ifa/t/2025/ls/itu-rwp6a/sp18-itu-rwp6a-00030.docx
]
LS/r on developments with low frequency powerline communications (mains communication equipment) (reply to SG5-LS18)
Approved on 2025-09-16
in response to
SG5-LS18
.
For action to:
Q4/5
For information to:
-
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0596
Meeting:
Geneva, 29 October - 6 November 2025
TSAG-LS14
- [
https://www.itu.int/ifa/t/2025/ls/tsag/sp18-tsag-00014.docx
]
LS on Proposed template for ITU-T Standards Success Stories
Approved on 2025-09-16
.
For action to:
All questions
For information to:
-
Deadline:
2025-12-22
Submitted as:
T25-SG05-251029-TD-GEN-0622
Meeting:
Geneva, 29 October - 6 November 2025
FG-AINN-LS3
- [
https://www.itu.int/ifa/t/2025/ls/fg-ainn/sp18-fg-ainn-00003.docx
]
LS on information and call for contributions to the new Focus Group on Artificial Intelligence Native for Telecommunication Networks (FG-AINN)
Approved on 2025-09-10
.
For action to:
All questions
For information to:
-
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0597
Meeting:
Geneva, 29 October - 6 November 2025
SG2-LS52
- [
https://www.itu.int/ifa/t/2025/ls/sg2/sp18-sg2-00052.zip
]
LS on initiation of new work item ITU-T TR.M.cmtnps “Overview for collaborative management of telecommunication network and power supply”
Approved on 2025-09-05
.
For action to:
-
For information to:
Q6/5; Q11/5
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0584
Meeting:
Geneva, 29 October - 6 November 2025
SG2-LS57
- [
https://www.itu.int/ifa/t/2025/ls/sg2/sp18-sg2-00057.zip
]
LS on the consent of draft new Recommendation ITU-T M.3393 (M.rsmca): “Requirements for smart maintenance of cell antenna”
Approved on 2025-09-05
.
For action to:
-
For information to:
Q3/5; Q4/5
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0585
Meeting:
Geneva, 29 October - 6 November 2025
SG2-LS62
- [
https://www.itu.int/ifa/t/2025/ls/sg2/sp18-sg2-00062.docx
]
LS/r on the definition of the term 'traffic' from ITU-T Study Group 5 (reply to SCV-LS17)
Approved on 2025-09-05
in response to
SCV-LS17
.
For action to:
-
For information to:
Q8/5; Q9/5
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0586
Meeting:
Geneva, 29 October - 6 November 2025
SG2-LS69
- [
https://www.itu.int/ifa/t/2025/ls/sg2/sp18-sg2-00069.docx
]
LS on SCV activity in SG2
Approved on 2025-09-05
.
For action to:
Q8/5
For information to:
-
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0610
Meeting:
Geneva, 29 October - 6 November 2025
3GPP TSG SA5-S5-253746
- [
https://www.itu.int/ifa/t/2025/ls/3gpptsgsa5/sp18-3gpptsgsa5-00067.docx
]
LS/r to ETSI TC EEPS on Liaison out to 3GPP SA5 on multi-dimensional network energy efficiency metrics (reply to LS S5-253305 (EEPS(25)000034r2))
Approved on 2025-08-29
in response to
ETSI TC EE-EEPS(25)000034r2
.
For action to:
Q6/5
For information to:
-
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0559
Meeting:
Geneva, 29 October - 6 November 2025
SCV-LS53
- [
https://www.itu.int/ifa/t/2025/ls/scv/sp18-scv-00053.docx
]
LS on terms and definitions developed by ITU-T Study Group 5 (5 August 2025)
Approved on 2025-08-05
.
For action to:
Q6/5; Q8/5; Q9/5
For information to:
-
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0558
Meeting:
Geneva, 29 October - 6 November 2025
SG13-LS61
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00061.zip
]
LS on consent of draft new Recommendation ITU-T Y.3701 (ex Y.cdp-reqts) “Data handling – Functional requirements of collaborative data processing in data platforms”
Approved on 2025-07-25
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0552
Meeting:
Geneva, 29 October - 6 November 2025
SG13-LS67
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00067.zip
]
LS on initiation of new work item ITU-T Y.MLPaaS-reqts “Cloud computing – Functional requirements of PaaS for machine learning applications"
Approved on 2025-07-25
.
For action to:
-
For information to:
Q6/5; Q7/5; Q9/5; Q11/5; Q12/5
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0553
Meeting:
Geneva, 29 October - 6 November 2025
SG13-LS83
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00083.zip
]
LS on initiation of draft new Recommendation ITU-T Y.ncpc “Service model of network scheduling for computing and power grid supply collaboration”
Approved on 2025-07-25
.
For action to:
-
For information to:
Q6/5; Q11/5
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0555
Meeting:
Geneva, 29 October - 6 November 2025
SG13-LS98
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00098.zip
]
LS/r on draft new Recommendation ITU-T Y.L2E2net-frm (SG5-LS19)
Approved on 2025-07-25
in response to
SG5-LS19
.
For action to:
-
For information to:
Q6/5
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0557
Meeting:
Geneva, 29 October - 6 November 2025
JCA-AI/ML-LS13
- [
https://www.itu.int/ifa/t/2025/ls/jca-ai_ml/sp18-jca-ai_ml-00013.docx
]
LS on Invitation to nominate the representative to the ITU-T JCA-AI/ML
Approved on 2025-07-18
.
For action to:
All questions
For information to:
-
Deadline:
2026-01-30
Submitted as:
T25-SG05-251029-TD-GEN-0551
Meeting:
Geneva, 29 October - 6 November 2025
JCA-IMT2020-LS17
- [
https://www.itu.int/ifa/t/2025/ls/jca-imt2020/sp18-jca-imt2020-00017.docx
]
LS on Invitation to update the information in the IMT-2020 and beyond roadmap
Approved on 2025-07-16
.
For action to:
All questions
For information to:
-
Deadline:
2025-10-16
Submitted as:
T25-SG05-251029-TD-GEN-0550
Meeting:
Geneva, 29 October - 6 November 2025
SG20-LS46
- [
https://www.itu.int/ifa/t/2025/ls/sg20/sp18-sg20-oLS-00046.zip
]
LS on the progress of draft Recommendation ITU-T Y.energy-storage “Requirements and capability framework of energy storage service for residential community in smart city”
Approved on 2025-07-08
.
For action to:
-
For information to:
Q11/5
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0539
Meeting:
Geneva, 29 October - 6 November 2025
SCV-LS34
- [
https://www.itu.int/ifa/t/2025/ls/scv/sp18-scv-00034.docx
]
LS/r on the term “network infrastructure” developed by ITU-T Study Group 5 and validated by the CCT (reply to SG5-LS28)
Approved on 2025-07-01
in response to
SG5-LS28
.
For action to:
Q12/5
For information to:
-
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0545
Meeting:
Geneva, 29 October - 6 November 2025
ETSI TC EE-EE(25)067069
- [
https://www.itu.int/ifa/t/2025/ls/etsitcee/sp18-etsitcee-iLS-00056.docx
]
LS on IETF GREEN working group
Approved on 2025-06-26
.
For action to:
-
For information to:
Q6/5; Q7/5; Q9/5
Deadline:
-
Submitted as:
T25-SG05-251029-TD-GEN-0541
Meeting:
Geneva, 29 October - 6 November 2025
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