The ITU Radiocommunication Assembly, considering Question ITU-R 48/8; that different future systems are under study; that system compatibility is necessary for international operation; the need for flexible systems capable of adapting to new developments and natural disasters.
ITU-R M.1041-2 SPANISH-2003 Referenced Document
ITU-R M.625 Direct-printing telegraph equipment employing automatic identification in the maritime mobile service*, 2012-03-01 Update
ITU-T F.1 Operational Provisions for the International Public Telegram Service - Series F: Non-Telephone Telecommunication Services - Telegraph Service - Operating Methods for the International Public Telegram Service Study Group 2; 65 pp