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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
9-18 September 2026, Geneva
4-13 February 2026, Geneva
25 August - 5 September 2025, Geneva
5-14 February 2025, Geneva
19-28 June 2024, Geneva
11 March 2024, E-Meeting
8-17 November 2023, Geneva
13-22 March 2023, E-Meeting
16-20 May 2022, Geneva
8-19 November 2021, E-Meeting
31 May - 11 June 2021, E-Meeting
18 December 2020, E-Meeting
7-8 September 2020, E-Meeting
27 May - 5 June 2020, E-Meeting
4-13 December 2019, Geneva
19-28 February 2019, Geneva
4-13 July 2018, Geneva
27 November - 1 December 2017, Geneva
29 March - 7 April 2017, Geneva
14-23 September 2016, Geneva
20-29 January 2016, Geneva
18-27 March 2015, Geneva
28 May - 6 June 2014, Geneva
17-26 September 2013, Geneva
22-31 January 2013, Geneva
21-29 March 2012, Geneva
1-10 June 2011, Geneva
9-18 November 2010, Geneva
17-21 May 2010, Geneva
16-24 November 2009, Geneva
24 March - 2 April 2009, Geneva
23 September 2008, Geneva
6-15 May 2008, Geneva
30 October - 8 November 2007, Geneva
27-31 August 2007, Geneva
30 January - 8 February 2007, Geneva
3-11 May 2006, Geneva
Type of action
Any
Action
Comment
Information
With title containing all these words
Full search in ITU-T LSs Database
Total found:
46
Page Size:
10
20
50
100
1
2
3
ITU-D Q1/1-Document 1/99(Rev.1)
- [
https://www.itu.int/ifa/t/2025/ls/itu-dq1_1/sp18-itu-dq1_1-00003.docx
]
LS on continuation of the valuable collaboration
Approved on 2026-04-22
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0444
Meeting:
9-18 September 2026, Geneva
ITU-D Q3/1-Document 1/102
- [
https://www.itu.int/ifa/t/2025/ls/itu-dq3_1/sp18-itu-dq3_1-00007.docx
]
LS on request information about disaster resilience work items in telecommunication/ICT area
Approved on 2026-04-22
.
For action to:
Q3/2
For information to:
-
Deadline:
2026-09-27
Submitted as:
T25-SG02-260909-TD-GEN-0445
Meeting:
9-18 September 2026, Geneva
ITU-D Q3/1-1/103-LS6
- [
https://www.itu.int/ifa/t/2025/ls/itu-dq3_1/sp18-itu-dq3_1-00006.docx
]
LS/r on draft new Recommendation Q.Req_Frame_RRDN “Requirements and framework for network-based rapid response to natural disasters” (reply to SG11-LS122)
Approved on 2026-04-17
in response to
SG11-LS122
.
For action to:
-
For information to:
Q3/2
Deadline:
2026-09-30
Submitted as:
T25-SG02-260909-TD-GEN-0441
Meeting:
9-18 September 2026, Geneva
ITU-D Q5/1-Document 1/106-E
- [
https://www.itu.int/ifa/t/2025/ls/itu-dq5_1/sp18-itu-dq5_1-00005.docx
]
LS on collaboration and updates
Approved on 2026-04-17
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0442
Meeting:
9-18 September 2026, Geneva
SG11-LS109
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00109.zip
]
LS on update of 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 2026-03-11
.
For action to:
-
For information to:
Q1/2
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0429
Meeting:
Geneva, 9-18 September 2026
SG11-LS110
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00110.docx
]
LS/r on an update to E.RAA4Q.TSCA "Registration Authority Anchor - a Governance Framework for Assignment and Cross-Border Sharing of Trust Anchor Certificate Information for Trusted Signalling Certification Authority" (reply to SG2-LS96)
Approved on 2026-03-11
in response to
SG2-LS96
.
For action to:
Q1/2
For information to:
-
Deadline:
2026-07-01
Submitted as:
T25-SG02-260909-TD-GEN-0430
Meeting:
Geneva, 9-18 September 2026
SG11-LS117
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00117.zip
]
LS on results of the ITU Survey on the use of ITU-T Recommendations in national conformity assessment frameworks, including type approval
Approved on 2026-03-11
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0431
Meeting:
Geneva, 9-18 September 2026
SG11-LS115
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00115.docx
]
LS/r on new terms and definitions produced in SG21 (reply to SG21-LS164)
Approved on 2026-03-11
in response to
SG21-LS164
.
For action to:
-
For information to:
All questions
Deadline:
2026-07-17
Submitted as:
T25-SG02-260909-TD-GEN-0432
Meeting:
Geneva, 9-18 September 2026
SG11-LS121
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00121.zip
]
LS on work progress on quantum key distribution network (QKDN) in SG11
Approved on 2026-03-11
.
For action to:
-
For information to:
Q5/2; Q6/2; Q7/2
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0433
Meeting:
Geneva, 9-18 September 2026
SG11-LS122
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00122.zip
]
LS on draft new Recommendation Q.Req_Frame_RRDN “Requirements and framework for network-based rapid response to natural disasters”
Approved on 2026-03-11
.
For action to:
-
For information to:
Q3/2
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0434
Meeting:
Geneva, 9-18 September 2026
SG11-LS124
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00124.zip
]
LS on the initiation of new work item QSTR-AI4CDD “Technical Report on AI-enabled behavioural detection framework for counterfeit ICT devices in operational networks”
Approved on 2026-03-11
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0435
Meeting:
Geneva, 9-18 September 2026
SG11-LS118
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00118.zip
]
LS on initiation of two new work items Q.CSSIWF and Q.SSP4SIP
Approved on 2026-03-11
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0436
Meeting:
Geneva, 9-18 September 2026
SG11-LS127
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00127.zip
]
LS on initiation of new work item ITU-T Q.3647-rev “Signalling requirements for emergency services in an Internet protocol multimedia subsystem roaming environment”
Approved on 2026-03-11
.
For action to:
-
For information to:
All questions
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0437
Meeting:
Geneva, 9-18 September 2026
SG11-LS138
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00138.zip
]
LS on initiation of new work item Q.CPN-BNG-DLLMT “Signalling requirements of border network gateway for distributed large language model training in computing power network”
Approved on 2026-03-11
.
For action to:
-
For information to:
Q5/2; Q6/2; Q7/2
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0439
Meeting:
9-18 September 2026, Geneva
SG11-LS145
- [
https://www.itu.int/ifa/t/2025/ls/sg11/sp18-sg11-00145.zip
]
LS on initiation of new work item Q.CPN-iopt "Interoperability testing framework and requirements of computing power network"
Approved on 2026-03-11
.
For action to:
-
For information to:
Q5/2; Q6/2; Q7/2
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0440
Meeting:
9-18 September 2026, Geneva
SG13-LS160
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00160.zip
]
LS on initiation of draft new Technical Report ITU-T YSTR.FMSC-AI “Fixed, mobile and satellite convergence – Considerations on AI for IMT-2020 networks and beyond”
Approved on 2026-02-27
.
For action to:
-
For information to:
Q5/2; Q6/2; Q7/2
Deadline:
2026-08-31
Submitted as:
T25-SG02-260909-TD-GEN-0408
Meeting:
Geneva, 9-18 September 2026
SG13-LS161
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00161.zip
]
LS on consent of draft new Recommendation ITU-T Y.3193 (ex Y.IMT2020-DIC) “Distributed intelligence collaboration for IMT-2020 and beyond”
Approved on 2026-02-27
.
For action to:
-
For information to:
Q5/2; Q6/2; Q7/2
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0409
Meeting:
Geneva, 9-18 September 2026
SG13-LS163
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00163.zip
]
LS on initiation of new work item ITU-T Y.OAMTI “Orchestration for AI model training and inference in IMT-2020 networks and beyond”
Approved on 2026-02-27
.
For action to:
-
For information to:
Q5/2; Q6/2; Q7/2
Deadline:
-
Submitted as:
T25-SG02-260909-TD-GEN-0410
Meeting:
Geneva, 9-18 September 2026
SG13-LS164
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00164.zip
]
LS on consent of draft new Recommendation ITU-T Y.3227 (ex Y.FMSC-MPTC) “Fixed, mobile and satellite convergence – Multi-path transmission control for IMT-2020 networks and beyond”
Approved on 2026-02-27
.
For action to:
-
For information to:
Q5/2; Q6/2; Q7/2
Deadline:
2026-08-31
Submitted as:
T25-SG02-260909-TD-GEN-0411
Meeting:
Geneva, 9-18 September 2026
SG13-LS165
- [
https://www.itu.int/ifa/t/2025/ls/sg13/sp18-sg13-00165.zip
]
LS on consent of draft new Recommendation ITU-T Y.3228 (ex Y.FMSC-DN) “Fixed, mobile and satellite convergence – Dedicated networks for IMT-2020 networks and beyond”
Approved on 2026-02-27
.
For action to:
-
For information to:
Q5/2; Q6/2; Q7/2
Deadline:
2026-08-31
Submitted as:
T25-SG02-260909-TD-GEN-0412
Meeting:
Geneva, 9-18 September 2026
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