ITU Operational Bulletin |
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No. 1243 |
1.V.2022 |
(Information received by 10 April 2022) ISSN 1564-5223 (Online) |
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E-mail: itumail@itu.int |
Standardization
Bureau (TSB) |
Radiocommunication Bureau (BR) |
GENERAL INFORMATION
Lists annexed to the ITU Operational Bulletin: Note from TSB
Approval of ITU-T Recommendations
Service Restrictions
Call-Back and alternative calling procedures (Res. 21 Rev. PP-06)
AMENDMENTS TO SERVICE PUBLICATIONS
List of Ship Stations and Maritime Mobile Service Identity Assignments (List V)
List of Issuer Identifier Numbers for the International Telecommunication Charge Card
Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptions