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Executive summary:

Meeting of ITU-T Study Group 2
Virtual/Geneva, 4-13 February 2026

1     Overview

ITU-T Study Group 2 held its first meeting in the new format, mixing virtual and physical meetings, with the aim of improving efficiency and lessening the burden on ITU in terms of cost and rooms.

The meeting adopted the agenda (SG2-TD290R1/PLEN) and held its plenary on Monday, 9 February. The meeting was attended by 178 participants, with 40% of female participants, from 54 countries (44 Member States were represented). Participation details can be found in Section 7 below.

The meeting received 70 Contributions (analysis in SG2-TD298R1/PLEN) and handled 293 TDs. Delegates reviewed 96 incoming Liaison Statements and agreed to send 17 outgoing Liaison statements (SG2‑TD299R2/PLEN).

The next SG2 meeting is scheduled for 9-18 September 2026.  The complete schedule of meetings may be found in Section 5.

2     Major outcomes

The Study Group took the following decisions:

• Advise the Director of TSB on various NNAI topics (see section 3 on Numbering);
• Approve the revised ENUM interim procedures in TD423R1/PLEN, to come into force at the next SG2 meeting in September pending the conclusions from the responses to the TSB Circular above (see clause 3.17 of the Q1/2 report);
• Four Recommendations were approved under TAP;
• Eleven texts (five Recommendations and six amendments) were Consented;
• Ten new work items were initiated.

2.1    Recommendations Approved during closing plenary (TAP, Resolution 1)

Comments were received on Determined revised ITU-T E.164 from the Russian Federation and Sweden; on Determined revised E.164.1, from the Russian Federation, Sweden and the United Kingdom; on Determined new ITU-T E.192 (ex E.IoT-NNAI), from the Russian Federation, Sweden and the United Kingdom; and on Determined new E.371 )(ex. E.dit), from Canada, the Russian Federation, Sweden, the United Kingdom and the United States, during the TAP consultation phase. These issues were resolved by the SG2 experts, and an updated version of the texts were Approved at the closing plenary.

2.2    Recommendations Consented during closing plenary (AAP, ITU-T A.8)

2.3    New work items

SG2 initiated ten new work items:

3     Numbering

Since the previous ITU-T Study Group 2 meeting (Geneva, 5-14 February 2025), the Numbering Coordination Team (NCT) held ten meetings. In addition, further consultations were carried out through email correspondence.  The NCT has worked on sixteen new or pending applications for international numbering codes.  Details can be found in SG2-TD328R2/PLEN.

The meeting considered five TDs referred to it by the NCT and various contributions on applications for INRs:

• Advise the Director of TSB on various applications that were submitted to SG2 for guidance;
  

• Send the TSB Circular in TD421R1/PLEN, regarding the possible closure of the ENUM system under e164.arpa (see clause 3.17 of the Q1/2 report);
• Encourage World's Global Telecom to re-submit its application focusing on assignment criteria as defined in E.164.1. TSB noted that they may use the following documentation to progress their application:

• The Template for applications for shared network for the applicant to address all the relevant criteria; and
• The Guidance for E.164 and E212 applicants, which may assist the applicant to do that.

The participants offered the following observations to the applicant given the specifics of the service described in C148, which may require particular attention for next steps:

• Service footprint (section 8.1.4 of E.164.1): the applicant should demonstrate that “its international network infrastructure would contain connecting physical nodes in two or more countries, which are not within the same integrated numbering plan". It was noted that the statement cannot be only aspirational but be associated with evidence. 
• Confirmation of the date of implementation in these countries (section 8.1.11): the “applicant is required to state the planned date of commercial implementation in at least two countries". Similar to the service footprint, the timeline should not only be aspirational, and the countries must be specified. 
• Compliance with national regulation (section 8.2.1.4): “The applicant affirms that all national regulatory and legal requirements of the countries in which the applicant's Network will operate and provide service would be met"; if applicable to the countries specified for the countries mentioned in 8.1.11.

The poten​tial WGT revised application, taking into account the guidance offered, will be reviewed by Study Group 2.

• Approve the revised ENUM interim procedures in TD423R1/PLEN, to come into force at the next SG2 meeting in September pending the conclusions from the responses to the TSB Circular above (see clause 3.17 of the Q1/2 report);

No reports of potential misuse were received during this period.

The webpage on misuse of numbering resources was updated further to the approval on 5 September 2025 of ITU-T E.156 and a new circular was published (TSB Circular 105 of 10 December 2025).

4     Other activities

The following ad-hoc sessions were held:

1. Contribution clinic (9 January 2026) – presentation slides in SG2-TD357/PLEN.
2. Newcomer session (9 February 2026) – presentation slides in SG2-TD333/PLEN.
3. Developing countries session (10 February 2026) – report in SG2-TD335/PLEN.
4. Vocabulary and terminology (10 and 12 February 2025) – report in SG2-TD337/PLEN.

5     Future meetings

The meeting agreed to the Chairman's proposal for future SG2 meetings and interim activities (SG2‑TD349R2/PLEN).

•    24 February-5 March 2027 (Geneva TBC);
•   1-10 December 2027 (date and venue TBC);
•   31 May-9 June 2028 (date and venue TBC);
•   14-23 March 2029 (date and venue TBC);
•   12-21 September 2029 (date and venue TBC).

Interim activities planned by Study Group 2

6     Contribution summary

70 Contributions published:

• 25 contributions on NNAI topics for WP1/2 :
• Thirteen Contributions with either revisions or topics based on existing NNAI Recommendations (E.101, E.164, E.164.1, E.195, E.212);
• Three of those are contributions submitted by applicants for International Numbering Resources;
• Ten Contributions on new numbering-related work items that are already ongoing (WP1/2):
  
• Registration authority assignment criteria to issue digital public certificates for use by Q.TSCA;
• Technical Report on NIN-SIM-IMEI;
• Technical Report on Carrier Switching;
• Technical Report on Carrier on Permitted Call Masking;
• Alternative calling procedures;
• Management of computing power identifiers for computing power networks.
• 45 Contributions on new network management work items, and one Contribution on an existing network management work item (WP2/2);
• Three NWIs in WP1/2;
• Seven NWIs in WP2/2.

7     Participation statistics

8       SG2 membership activity

New SG2 Associates since February 2025:

1. SIMBA Telecom Pte. Ltd. (Singapore)
2. Myriota PTY (Australia)
   
3. Simsalasim Germany GmbH (Germany)
4. A1 Telekom Austria AG (Austria)
5. Best Telecom Company Limited (Lao People's Democratic Republic)
6. Société française du radiotelephone (SFR) (France)
7. Ligado Networks (Canada), Inc. (Canada)
8. Omnitouch Network Services Pty Ltd. (Australia)

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