During the data entry period, information on this resource may be missing or incomplete.
ITU Operational Bulletin is the medium for the exchange of information on changes in international telecommunication networks and services. Each edition includes informational notices and amendments to ITU Service Publications. (Read more about ITU OB.)
ITU OB Online is an effort to make the ITU Operational Bulletin messages and associated Service Publications easier to view & navigate via fully-featured Web interface and machine-readable APIs.
While the information is being filled in, some editions of ITU OB and ITU Service Publications may be missing here. In such cases please refer to authoritative ITU OB resource on ITU website.