ITU Operational Bulletin 1f8a81b9b0707b63-19211.webchannel-proxy.scarabresearch.com/itu-t/bulletin
No. 1233	1.XII.2021	(Information received by 15 November 2021) �ISSN 1564-5223 (Online)
Place des Nations CH-1211 Gen�ve 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 R�gulation et de Contr�le des T�l�communications (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