Liaison Statements

S.No Source Of Liaison Subject of the Liaison Date
1 ATSC Liaison from ATSC to TSDSI regarding recent ATSC updates of potential interest to TSDSI 21-11-2025
2 3GPP SA5 Reply LS on Invitation to update the information in the IMT-2020 and beyond roadmap 25-11-2025
3 DoT SVURG/Z-Mod Introduction 12-12-2025
4 ITU-T

LS on information on Focus Group on Artificial Intelligence Native for Telecommunication Networks

 03-12-2025
5 TEC Referring the matter for Development of Technology Standards for using WiFi over mmWave in IMT spectrum (26 GHz band) allotted to TSPs in India-Regarding 27-10-2025
6 JCA-IMT2020  LS on Invitation to update the information in the IMT-2020 and beyond roadmap
29-10-2025
7 TEC Referring the matter for Development of Technology Standards for using Wi-Fi over mmWave in IMT spectrum (26 GHz band) allotted to TSPs in India-Regarding
08-09-2025
8 ITU-R WP5D Liaison Statement to External Organizations on the Schedule for Updating Recommendation ITU-R M.2150 To Revision 4 22-07-2025
9 ITU-R WP5D Liaison statement to external organizations on the schedule for updating recommendation ITU-R M.2012 to Revision 8 22-07-2025
10 ITU-T FG-AINN LS on call for contributions to the new Focus Group on Artificial Intelligence Native for Telecommunication Networks (FG-AINN) 12-05-2025
11 JCA-IMT2020 LS on Invitation to update the information in the IMT-2020 and beyond roadmap 06-03-2025
12 ITU-R WP5D Liaison statement to relevant External Organizations on timing of updates to IMT-2020 Recommendation ITU-R M.2150 and IMT-Advanced Recommendation ITU-R M.2012 after year 2025 21-02-2025
13 ITU-R WP5D Liaison statement to relevant external organizations on process to revise recommendation ITU-R M.2150-2 and recommendation ITU-R M.2012-6 30-10-2024
14 ITU-R WP5D Minimum requirements related to technical performance for IMT-2030 radio interface(s) 29-10-2024
15 ITU-R WP5D Invitation for submission of proposals for candidate radio interface technologies for the terrestrial components of the radio interface(s) for IMT-2030 and invitation to participate in their subsequent evaluation 29-10-2024
16 ETSI ISG MEC ETSI ISG MEC publication of MEC Phase 3 deliverables 16-04-2024
17 JCA-IMT2020 LS on Invitation to update the information in the IMT-2020 and beyond roadmap 09-04-2024
18 ITU-R WP5D Reception and invitation for evaluation of new RIT-proposal for IMT-2020 (Add.1 to 5/LCCE/109) 16-02-2024
19 ITU-R WP5D Parameters of terrestrial component of IMT for sharing and compatibility studies in the frequency bands 4400-4800 MHz, 7125-8400 MHz and 14.8-15.35 GHz 12-02-2024
20 JCA-IMT2020 LS on Invitation to update the information in the IMT-2020 and beyond roadmap 31-10-2023
21 ITU-R WP5D Draft new report ITU-R M.[IMT.MULTIMEDIA] regarding the “Capabilities of the terrestrial component of IMT-2020 for multimedia communications” 14-07-2023
22 ITU-R WP5D Draft new REPORT ITU-R M.[IMT.APPLICATIONS] on “Applications of the terrestrial component of IMT for specific societal, industrial and enterprise usages” 14-07-2023
23 ITU-R WP5D Liaison statement to external organizations on the schedule for updating recommendation ITU-R M.2150 to revision 3 13-07-2023
24 ITU-R WP5D Liaison statement to external organizations engaged in recommendation ITU-R M.2012 on the schedule for updating recommendation ITU-R M.2012 to revision 7 13-07-2023
25 ITU-R WP5D Completion of draft new recommendation ITU-R M.[IMT.FRAMEWORK FOR 2030 AND BEYOND] on Framework and overall objectives of the future development of IMT for 2030 and beyond 12-07-2023
26 ITU-T Liaison statement from ITU-T JCA-IMT2020: LS on Invitation to update the information in the IMT-2020 and beyond roadmap [to ITU study groups and external IMT-2020 liaison partners] 19-04-2023
27 ITU-R WP5D Liaison statement to GCS Proponents and Transposing Organizations on the provision of transposition references and Certification C for Draft Revision 2 of Recommendation ITU-R M.2150 17-02-2023
28 ITU-R WP5D LIAISON STATEMENT TO RELEVANT EXTERNAL ORGANIZATIONS ON TIMING OF UPDATES TO IMT-2020 RECOMMENDATION ITU-R M.2150 AND IMT-ADVANCED RECOMMENDATION ITU-R M.2012 AFTER YEAR 2023 17-02-2023
29 ITU-R WP5D LIAISON STATEMENT TO GCS PROPONENTS AND TRANSPOSING ORGANIZATIONS ON THE PROVISION OF TRANSPOSITION REFERENCES AND CERTIFICATION C FOR DRAFT REVISION 6 OF RECOMMENDATION ITU-R M.2012 17-02-2023
30 JCA-IMT2020 LS on Invitation to update the information in the IMT-2020 and beyond roadmap [to ITU study groups and external IMT-2020 liaison partners] 21-11-2022
31 JCA-IMT2020 LS on Invitation to update the information in the IMT-2020 and beyond roadmap [to ITU study groups and external IMT-2020 liaison partners] 7-07-2022
32 NSGM Liaison statement on Use of Cloud Infrastructure for Smart Grids – Way Forward 6-06-2022
33 3GPP TSG RAN Reply LS on the merger of TSDSI 5Gi into 3GPP Rel-17 24-03-2022
34 JCA-IMT2020 Invitation to update the information in the IMT2020 roadmap 2-12-2021
35 ITU-R WP5D Development of a draft new Report ITU-R M.[IMT.INDUSTRY] –Applications of IMT for specific societal, industrial and enterprise usages 25-10-2021
36 ITU-R WP5D Generic unwanted emission characteristics of base / mobile stations using the terrestrial radio interfaces of IMT-2020 14-10-2021
37 ITU-R  Liaison Statement to External Organizations on Development of “IMT Vision for 2030 and beyond” 15-07-2021
38 ITU-R WP5D Liaison statement to GCS Proponents and Transposing Organizations on the provision of transposition references and Certification C for Draft Revision 5 of Recommendation ITU-R M.2012 29-06-2021
39 ITU-R WP5D Liaison statement to External Organizations engaged in Recommendation ITU-R M.2012 on the schedule for updating Recommendation ITU-R M.2012 to Revision 6 29-06-2021
40 ITU-R Liaison Statement to the external organizations on the schedule for updating Recommendation ITU-R M.2150 to Revision ‘AFTER YEAR 2021’ 14-06-2021
41 NSCS NSCS feedback on TSDSI TR 6006 V2.0.0 04-06-2021
42 TEC Response received from TEC regarding information on FS and FSS link parameters 17-05-2021
43 ITU-R WP5A Liaison Statement to request for input for a draft revision of Recommendation ITU M.1801-2 13-05-2021
44 ITU-R Liaison Statement to relevant external organizations on timing of updates to IMT-2020 Recommendation ITU-R M.2150 and IMT-Advanced recommendation ITU-R M.2012 after year 2021 16-03-2021
45 ITU-T Invitation to update the information in the IMT2020 roadmap 04-03-2021
46 WPC Response received from WPC regarding the LS relating to SI 73 and SI 74 13-12-2020
47 ITU-R 27-10-2020
48 ITU-R Liaison Statement to GCS Proponent and transposing organisations of LTE-Advanced on the revision of IMT-ADV/31. (Schedule for Revision 5 of recommendation ITUR M.2012) 27-10-2020
49 ITU-R 27-10-2020
50 ITU-R Submission of IPR Policy and Business Matters Forms 18-07-2020
51 ITU-T  LS on Invitation to update the information in the IMT2020 roadmap [to ITU study groups and external IMT-2020 liaison partners] 13-07-2020
52 ITU-R Liaison Statement to RIT/SRIT Proponents on the completion and conclusions of steps 5 to 7 of the IMT-2020 Process for the first release of new recommendation ITU-R M.[IMT-2020.SPECS] 08-07-2020
53 ITU-R Liaison Statement to Transposing organizations on the completion of step 8 of IMT-2020 process for the first release of new recommendation ITU-R M.[IMT-2020.SPECS] 08-07-2020
54 DCPW Request to get study/consultation conducted as per TRAI recommendations on PPDR 08-06-2020
55 ITU-R Thirty-fifth meeting of Working Party 5D, 23 June – 9 July 2020 Corrigendum 1 to Circular Letter 5/LCCE/86 13-05-2020
56 ITU-R Information on the evaluation results of the candidate radio interface technologies for the terrestrial components of IMT-2020 06-03-2020
57 ITU-R  Development of a draft new report ITU-R M.[IMT.C-V2X] – Application of the Terrestrial Component of IMT for Cellular-V2X 06-03-2020
58 ITU-R Parameters of terrestrial component of IMT for sharing and compatibility studies in preparation for WRC-23 04-03-2020
59 ITU-R Liaison Statement to potential GCS/DIS Proponents[1] on the request to submit the materials for the first release of new recommendation ITU-R M.[IMT-2020.SPECS] 04-03-2020
60 ITU-R Liaison statement to EXTERNAL ORGANIZATIONS[1] on the schedule for updating Recommendation ITU-R M.2012 to Revision 5 27-02-2020
61 ITU-R Liaison Statement to external organizations (Availability of Addendum 5 to Circular Letter 5/LCCE/59) 18-12-2019
62 ITU-R Liaison Statement to external organizations  on the request to submit the materials for the first release of new recommendation ITU-R M.[IMT-2020.SPECS] 18-12-2019
63 ITU-R  Liaison Statement to IMT-2020 proponents ‘PROPONENT TSDSI’ 18-12-2019
64 3GPP TSG RAN Response to Liaison Statement to 3GPP RAN Group on Non-Critical extension usage. 05-12-2019
65 Ofcom Remote Areas Radio Access Network 30-08-2019
66 ITU- R The detailed schedule for finalization of the first release of new Recommendation ITU-R M.[IMT-2020.SPECS] 23-07-2019
67 ITU- R The time interval to provide transposing references for IMT-2020 23-07-2019
68 ITU- R The time interval to provide transposing references for IMT-2000 23-07-2019
69 3GPP 3GPP LS to WP5D on IMT-2020 timeline 10-05-2019
70 ITU- R Liaison statement to external organizations on the schedule for updating Recommendation ITU-R M.1457 to Revision 15 04-03-2019
71 ITU- R Information of evaluation report for the terrestrial components of the radio interface(s) for IMT-2020 04-03-2019

S.No Recipient of Liaison Subject of Liaison Date
1 TEC Referring the matter for Development of Technology Standards for using Wi-Fi over mmWave in IMT spectrum (26GHz band) allotted to TSPs in India-Regarding 16-10-2025
2 ITU-T JCA-IMT 2020 16-06-2025
3

DOT- DDG(S.R.I.), Director(SR), Director(SRI-I), Director(SRI-II), ADG(SRI-I), ADG(SRI-III), DDG(NT),  Director(NT-I), Director(NT-II), ADG(AS-IV), ADG (AI&DIU), ADET (AI&DIU), DDG(AI & DIU), Director(AI&DIU)

TEC – DDG (IOT),  DDG (Standardisation), Director (Std), ADG (Std), AD (Std), DDG (IT), Director (IT), AD(IT)

MietY [Standardisation Testing & Quality Certification Directorate] – Director General and other Group Heads (IT & eGovernance Group, Certification Group, Digital Forensics, Training & Futuristic Technology Group) 

 Liaison statement regarding Technical Report – Study on Semi-Autonomous Collaborative Telerobotics DOT, TEC, MietY (STQC) – 3 April 2025
4

TEC – DDG (FA), DDG (IOT), DDG(AL), Director (6G Technologies), DDG (IT), Director (IT), DDG (IOT), DDG (Future Networks)

DOT- DDG(AI & DIU), Director(AI&DIU), Director(AI&DIU)

MINISTER OF AGRICULTURE & FARMERS WELFARE – Director (Digital), Advisor (Digital Agriculture), Director (Crops)

 Liaison statement regarding Technical Report – Study on the Usage of oneM2M for Smart Agriculture end-to-end Monitoring Use Case in Indian Context DOT, TEC, DEPARTMENT OF AGRICULTURE & FARMERS WELFARE – 21 March 2025
5

DOT- DDG(SA-II), Chief Information Security Officer, Director(Security-II), Director(Security),Director(UDS),Director(Security Audit), DDG(Security-PPI),Director(SPPI),ADG(TSOC), DDG(NT),Director(NT-I), Director(NT-II)

TEC – DDG (Future Networks), DDG (TS), Director (TS)

NSCS, India – Joint Secretary

 Liaison statement regarding Technical Report – Study on Network Security Encryption Mechanism DOT, TEC, NSCS India – 21 March 2025
6

DOT – DDG(Security-PPI), Director(SPPI), ADG(TSOC),DDG(DS),Director(DS-II), Director(DS-III), DDG(AI & DIU), Director(AI&DIU), DDG(NT)

TEC – DDG (Future Networks), DDG (FA), DDG (MT), DDG (TS)

NCCS – Sr DDG, DDG (SAS),DDG (SLR), DDG (SC & HQ),DIR (SAS-I)

NSCS – Joint Secretary

ITU-T SG17 -Security

 Liaison statement regarding Technical Report – Enhancement of the Privacy of User Subscription Identity in Future Networks.

DoT, TEC, NCCS, ITU-T SG17: Security – 9 Nov 2024

NSCS – 15 Nov 2024
7

DOT – DDG(NT), DDG(DS), DDG(Mobile), DDG(AI & DIU)

TEC- DDG (MT), DDG (IT), Director (IT)

NITI Aayog – Health & Family Welfare, Education Vertical

TCOE – Deputy Director

Sangam Digital Twin (DOT Initiative)

 Liaison statement regarding Technical Report – Study on system requirements related to metaverse use cases in mobile network DoT, TEC, NITI Aayog, TCOE, SANGAM: Digital Twin (DOT Initiative)        6 Nov 2024
8

DOT- DDG(NT), Director(NT-II), Director(NT-I), DDG(DS), Director(DS-II), Director(DS-III), DDG(Mobile), Dir(Mob-1 USOF), Dir(Mob-2 USOF), DDG(AI & DIU)

TEC – DDG (TS), DDG (MT), DDG (RC)

 Liaison statement regarding Technical Report – Slice Identification in 5G RAN and Core for End-to-End Secure and Resilient Slice Services 07 Nov 2024
9 ITU-T JCA-IMT 2020 Response to JCA-IMT2020 LS15 date 9 April 2024 regarding update to the information in the IMT2020 Roadmap 12-06-2024
10

DOT- DDG Access Services, Director Access Services, DDG(S.R.I.),Director(SRI),DDG(NT) TEC – DDG (6G Technologies), Director(6G),DDG(IOT), DDG(sd) CEA – Chief Engineer (Power Communication Development) NSGM – Director(NPMU), Chief General Manager (NPMU)

 Liaison statement regarding Technical Report – Communication Requirements and Recommendations for Energy Sector DOT, TEC, Central Electricity Authority (CEA), National Smart Grid Mission (NSGM) – 30 April 2024
11 ITU-T JCA-IMT 2020 Response to JCA-IMT2020 LS14 dated October 31, 2023, regarding update to the information in the IMT2020 Roadmap 16-02-2024
12

DOT-DDG(S.R.I.), Director(SRI), ADG, DDG(Security Assurance), Director(Security), DDG(NT), DDG(AI & DIU), Director(AI&DIU)

TEC -DDG (TS), DDG (IOT)

 Liaison statement regarding Technical Report – Enablement of common ontology for Adaptive traffic control system and other intelligent transportation system products DOT, TEC- 29 Jan 2024
13

Study Group Networks

Chair, Vice Chair, Advisor

 Liaison statement regarding Technical Report – Slice Identification in 5G RAN and Core for End-to-End Secure and Resilient Slice Services SGN – 18 Jan 2024
14 ITU-T JCA-IMT 2020 Response to JCA-IMT2020 LS13 date 18 April 2023 regarding update to the information in the IMT2020 Roadmap 09-09-2023
15

DOT – Director(ICI),  DDG(IC), DDG(NT) TEC – DDG (Future Networks), DDG (IOT)

 Liaison statement regarding Technical report – Rural Broadband Services and Architecture DOT, TEC – 03-08-2023
16

DOT – Director(ICI),  DDG(IC), DDG(NT) TEC –DDG (IOT)

 Liaison statement regarding Technical report – Study of UAV/Drone 3GPP Standard Applicability to India Use Cases DOT, TEC – 03-08-2023
17 DOT – ADG(AS-III), DDG(IC), DDG(NT),
TEC –DDG (IOT)		 Liaison statement regarding Technical report –   Indian Languages in Mobile Transactions DOT, TEC – 21-07-2023
18 DOT – ADG(AS-III), DDG(S.R.I.), DDG(IC), DDG(NT), TEC – DDG (FA), DDG (IOT), DDG (AL), Director (6G Technologies) ITU-T Liaison statement regarding Technical report –   Study on Edge Intelligence standards for haptics related IIoT use cases DOT, TEC,

ITU-T – 21-07-2023
19

DOT – DDG(Security Assurance), Director(Security-I), DDG(SA-II), Director(Security-II) , Director(Security), Director(UDS), Director(Security Audit) TEC – DDG (TS),      Director (TS)

 Liaison statement regarding Technical report –   Post-Quantum Cryptography for Future 5G Networks and Application DOT,  TEC-    29-05-2023
20

DOT- DDG(Security Assurance), Director(Security-I), Director(Security-II) DDG(SA-II), Director(Security), Director(UDS), Director(Security Audit)  TEC- DDG (TS), Director (TS)                        oneM2M

 Liaison statement regarding Technical report Digital Process for Know Your Machine Custodian 

DOT, TEC –   29-05-2023

oneM2M-      05-06-2023
21

DOT – DDG(DM), Director(DM), Director(DM-T)            TEC – DDG (TS),    Director (TS)

 Liaison statement regarding Technical report –   Minimum Technical Requirements for PPDR system deployment in India DOT,  TEC-   29-05-2023
22

DOT -DDG (SA-II) Security Assurance       TEC – DDG (IT), Director (TS)        oneM2M

 Liaison statement regarding Technical report –   Smartphone User Data & Privacy Protection

DOT, TEC –    27-05-2023

oneM2M-      05-06-2023
23 JCA IMT-2020 Response to JCA-IMT2020 on their Invitation to update the information in the IMT2020 Roadmap 27-02-2023
24 DoT
WPC
TEC		 LS from TSDSI on Sharing and Compatibility Studies of IMT Systems with FSS satellites in the Frequency Band 6 425-7 125 MHZ in India 13-09-2022
25 JCA IMT-2020 Response to JCA-IMT2020 on their Invitation to update the information in the IMT2020 Roadmap  13-09-2022
26 DoT
WPC
TEC		 SHARING AND COMPATIBILITY STUDIES OF IMT SYSTEMS with FSS satellites IN THE FREQUENCY BAND 6 425-7 125 MHZ IN INDIA 14-07-2022
27 WPC – Wireless Advisor,
TEC – Sr. DDG, DDG (Radio),
Prasar Bharti – ADG (Tech),
TRAI – Secretary -TRAI, Advisor(IT & CA),
Ministry of I&B – Joint Secretary (Broadcasting), Additional Director (CRS) (Broadcasting).		 LIAISON STATEMENT REGARDING TECHNICAL REPORT ON SERVICE DELIVERY USING 5G BROADCAST FOR TV, RADIO, IPTV AND FILE-CASTING 16-06-2022
28 JCA IMT-2020 Response to JCA-IMT2020 on their Invitation to update the information in the IMT2020 Roadmap 09-06-2022
29 3GPP TSG RAN Liaison Statement To 3GPP TSG RAN On The Merger Of TSDSI 5Gi Into 3GPP Rel-17 26-01-2022
30 3GPP PCG Liaison Statement To 3GPP PCG On The Merger Of TSDSI 5Gi Into 3GPP Rel-17 26-01-2022
31 TEC Liaison Statement To TEC Informing Of The Merger Of 5Gi Into 3gpp And Further Requesting To Stop The Adoption Of 5Gi As A National Standard 25-01-2022
32 TEC Liaison Statement To TEC For Spectrum Allocation For Various Services In India Between 95 Ghz To 300 Ghz Range For Study Of 6g Spectrum Requirements And Related Aspects For India 20-12-2021
33 DoT Liaison Statement To DoT For Spectrum Allocation For Various Services In India Between 95 Ghz To 300 Ghz Range For Study Of 6G Spectrum Requirements And Related Aspects For India 20-12-2021
34 PB Liaison Statement To Prasar Bharti For Spectrum Allocation For Various Services In India Between 95 Ghz To 300 Ghz Range For Study Of 6g Spectrum Requirements And Related Aspects For India 20-12-2021
35 WPC Liaison Statement To WPC For Spectrum Allocation For Various Services In India Between 95 Ghz To 300 Ghz Range For Study Of 6g Spectrum Requirements And Related Aspects For India 20-12-2021
36 TEC Liaison Statement to TEC regarding the clarifications required on the issues raised by the Consultative Committee on the TSDSI CPRI Fronthaul Standard. 22-11-2021
37 JCA IMT-2020 Response to JCA-IMT2020 on their Invitation to update the information in the IMT2020 Roadmap 28-10-2021
38 NSCS Liaison Statement to NSCS regarding TSDSI response to NSCS feedback on TSDSI TR 6006 V2.0.0 30-09-2021
39 TEC LS regarding technical report on NB-IOT Capabilities for energy metering 02-06-2021
40 TRAI LS regarding technical report on NB-IOT Capabilities for energy metering 07-05-2021
41 DOT LS regarding technical report on NB-IOT Capabilities for energy metering 07-05-2021
42 Central Electricity Authority LS regarding technical report on NB-IOT Capabilities for energy metering 02-04-2021
43  NSGM LS regarding technical report on NB-IOT Capabilities for energy metering 01-04-2021
44 Ministry of Power LS regarding technical report on NB-IOT Capabilities for energy metering 02-04-2021
45 WPC/DoT Response to the questionnaire from WPC regarding Roadmap for use of Radio Frequency Spectrum in India during next 10 years 15-03-2021
46 WPC Request for information on FS and FSS link parameters 11-02-2021
47 Ministry of I&B Request for information on FS and FSS link parameters 22-02-2021
48 DoT and TEC Request for information on FS and FSS link parameters 11-02-2021
49 DoT, WPC, TEC, MIB Request for information for coexistence and compatibility studies in 6GHz Band 18-09-2020
50 WWRF Response to evaluation of TSDSI RIT towards IMT-2020 by WWRF 18-06-2020
51 5GIA Response to evaluation of TSDSI RIT towards IMT-2020 by 5GIA 16-06-2020
52 DoT, WPC, TEC, for action, TRAI, for kind information Liaison Statement regarding release of technical report on channel characteristics of 60 GHz for 4G/5G backhaul 04-02-2020
53 DoT, TEC, WPC, Ministry of I&B, TRAI Liaison statement regarding technical report on broadcast offload 13-12-2019
54 3GPP TSG RAN Liaison Statement to 3GPP RAN Group on Non-Critical extension usage 05-12-2019
55 TEC Laison Statement regarding release of TR on Performance measurement of Dual Sim Devices 04-10-2019
56 Ofcom Response to Remote Areas Radio Access Network 13-09-2019