ITU Operational Bulletin www.itu.int/itu-t/bulletin
No. 1234	15.XII.2021	(Information received by 1 December 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:

Cabo Verde (Agência Reguladora Multissectorial da Economia (ARME), Praia)

Iran (Islamic Republic of) (Communications Regulatory Authority (CRA), Tehran)

Montserrat (Montserrat Info-Communications Authority (MICA))

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

Seychelles (Office of the President, Department of Information Communications Technology, Victoria)

Other communications:

Austria

Service Restrictions. . 23

Call-Back and alternative calling procedures (Res. 21 Rev. PP-06) 23

AMENDMENTS  TO  SERVICE  PUBLICATIONS

List of Issuer Identifier Numbers for the International Telecommunication Charge Card. . 24

List of ITU Carrier Codes

List of International Signalling Point Codes (ISPC)

National Numbering Plan