Itu operational BulletinCall-Back and alternative calling procedures (Res. 21 Rev. PP-2002)
All the countries/geographical areas which prohibit the practice of "Call-Back" should inform ITU accordingly by sending e-mail to the following address: tsbtson@itu.int Directory: dms pub -> itu-t -> opb opb -> International Telecommunication Union opb -> Itu operational Bulletin opb -> Telecommunication standardization bureau opb -> Itu operational Bulletin opb -> Boletín de Explotación de la uit opb -> Itu operational Bulletin opb -> Itu operational Bulletin opb -> Itu operational Bulletin Download 429.59 Kb. Share with your friends: |