ITU Operational Bulletin
www.itu.int/itu-t/bulletin

No. 1230

15.X.2021

(Information received by 30 September 2021)  ISSN 1564-5223 (Online)

Place des Nations CH-1211
Genève 20 (Switzerland)
Tel:            +4
1 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

 


GENERAL  INFORMATION

Lists annexed to the ITU Operational Bulletin: Note from TSB. . 3

Approval of ITU-T Recommendations. . 4

Telephone Service:

Bhutan (Bhutan InfoComm and Media Authority (BICMA), Thimphu)

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

Zambia (Zambia Information & Communications Technology Authority (ZICTA), Lusaka)

Service Restrictions. . 10

Call-Back and alternative calling procedures (Res. 21 Rev. PP-06) 10

AMENDMENTS  TO  SERVICE  PUBLICATIONS

List of Issuer Identifier Numbers for the International Telecommunication Charge Card. . 11

Mobile Network Codes (MNC) for the international identification plan  for public networks and
subscriptions.. 12

List of ITU Carrier Codes

List of International Signalling Point Codes (ISPC) 14

National Numbering Plan