ITU Operational Bulletin
1f8a81b9b0707b63-19211.webchannel-proxy.scarabresearch.com/itu-t/bulletin

No. 1311

1.III.2025

(Information received by 14 February 2025) ��ISSN 1564-5223 (Online)

Place des Nations CH-1211
Gen�ve 20 (Switzerland)
Tel: ���������� +4
1 22 730 5111

E-mail:������ itumail@itu.int

Standardization Bureau (TSB)
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Fax:����������� +41 22 730 5853
E-mail:������ tsbmail@itu.int /
tsbtson@itu.int

Radiocommunication Bureau (BR)
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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

Telephone Service:

Micronesia (Telecommunications Regulation Authority (TRA), Pohnpei) 5

Other communication:

Austria

Service Restrictions.. 7

Call-Back and alternative calling procedures (Res. 21 Rev. PP-06).. 7

AMENDMENTS� TO� SERVICE� PUBLICATIONS

List of Issuer Identifier Numbers

Mobile Network Codes (MNC) for the international identification plan� for public networks
and subscriptions
. 9

List of ITU Carrier Codes

National Numbering Plan