ITU Operational Bulletin www.itu.int/itu-t/bulletin
No. 1193	1.IV.2020	(Information received by 16 March 2020)  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

Other communication:

Serbia. 4

Service Restrictions. 5

Call-Back and alternative calling procedures (Res. 21 Rev. PP-06) 5

AMENDMENTS  TO  SERVICE  PUBLICATIONS

List of Issuer Identifier Numbers for the International Telecommunication Charge Card. 6

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

List of Names of Administration Management Domains (ADMD) 7

List of ITU Carrier Codes

List of International Signalling Point Codes (ISPC) 9

National Numbering Plan. 10