ITU Operational Bulletin www.itu.int/itu-t/bulletin
No. 1233	1.XII.2021	(Information received by 15 November 2021)  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:

Burundi (Agence de Régulation et de Contrôle des Télécommunications (ARCT), Bujumbura)

Pakistan (Pakistan Telecommunication Authority (PTA), Islamabad)

Other communication:

Serbia

Service Restrictions. . 11

Call-Back and alternative calling procedures (Res. 21 Rev. PP-06) 11

AMENDMENTS  TO  SERVICE  PUBLICATIONS

List of Ship Stations and Maritime Mobile Service Identity Assignments. . 12

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.. 13

National Numbering Plan