ITU Operational Bulletin www.itu.int/itu-t/bulletin
No. 1248	15.VII.2022	(Information received by 1 July 2022)   ISSN 1564-5223 (Online)
Place des Nations CH-1211 Genève 20 (Switzerland) Tel:            +41 22 730 5111 E-mail:       itumail@itu.int		Standardization Bureau (TSB) Tel:            +41 22 730 5211 Fax:            +41 22 730 5853 E-mail:       tsbmail@itu.int / tsbtson@itu.int	Radiocommunication Bureau (BR) Tel:            +41 22 730 5560 Fax:            +41 22 730 5785 E-mail:       brmail@itu.int

Table of Contents

GENERAL  INFORMATION

Lists annexed to the ITU Operational Bulletin: Note from TSB. . 3

Approval of ITU-T Recommendations. . 4

Telephone Service: 5

Saint Vincent and the Grenadines (Eastern Caribbean Telecommunications Authority) 5

Tanzania (Tanzania Communications Regulatory Authority (TCRA), Dar-Es-Salaam) 8

Service Restrictions. . 10

Call-Back and alternative calling procedures (Res. 21 Rev. PP-06) 10

AMENDMENTS  TO  SERVICE  PUBLICATIONS

List of International Monitoring Stations (List VIII) 11

List of Issuer Identifier Numbers for the International Telecommunication Charge Card. . 17

Mobile Network Codes (MNC) for the international identification plan for public networks
and subscriptions

List of ITU Carrier Codes. . 19

List of International Signalling Point Codes (ISPC) 20

National Numbering Plan. . 21