ITU Operational Bulletin www.itu.int/itu-t/bulletin
No. 1212	15.I.2021	(Information received by 24 December 2020) 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

Telephone Service:

Côte d'Ivoire (Autorité de Régulation des Télécommunications/TIC de Côte d’Ivoire (ARTCI), Abidjan) 5

Mauritius (Information and Communication Technologies Authority (ICTA), Port-Louis)

Morocco (Agence Nationale de Réglementation des Télécommunications (ANRT), Rabat)

Service Restrictions. . 12

Call-Back and alternative calling procedures (Res. 21 Rev. PP-06) 12

AMENDMENTS TO SERVICE PUBLICATIONS

List of Issuer Identifier Numbers for the International Telecommunication Charge Card.... 13

Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptions 14

List of ITU Carrier Codes.. 15

National Numbering Plan. . 15