Invitation letters WTSA-20 and GSS

Updated: 09 November 2021

Circular letter No. 21/39 - To the Administrations of the Member States of the Union
DM-21/1018 - To the ITU-T Sector Members
DM-21/1019 - To ITU Academia
DM-21/1020 - To UN + Specialized Agencies, IAEA, Regional telecommunication organizations, Intergovernmental organizations operating satellite systems, Other regional or international organizations
TSB Circular 203 ^New - Further infomation