ITU Operational Bulletin |
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No. 1194 |
15.IV.2020 |
(Information received by 1 April 2020) 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
Telephone Service:
Iran (Islamic Republic of) (The Communications Regulatory Authority (CRA), Tehran)
Mongolia (The Communications Regulatory Commission of Mongolia, Ulaanbaatar)
Service Restrictions
Call-Back and alternative calling procedures (Res. 21 Rev. PP-06)
AMENDMENTS TO SERVICE PUBLICATIONS
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
List of ITU Carrier Codes
List of International Signalling Point Codes (ISPC)
National Numbering Plan