ITU Operational Bulletin www.itu.int/itu-t/bulletin
No. 1226	15.VIII.2021	(Information received by 30 July 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:

Azerbaijan (Ministry of Transport, Communications and High Technologies, Baku)

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

Malta (Malta Communications Authority (MCA), Floriana)

Papua New Guinea (National Information & Communications Technology Authority (NICTA), Boroko)

Service Restrictions. . 17

Call-Back and alternative calling procedures (Res. 21 Rev. PP-06) 17

AMENDMENTS  TO  SERVICE  PUBLICATIONS

List of Issuer Identifier Numbers for the International Telecommunication Charge Card. . 18

Mobile Network Codes (MNC) for the international identification plan  for public networks and
subscriptions. . 18

List of ITU Carrier Codes. . 19

List of International Signalling Point Codes (ISPC) 20

National Numbering Plan