The Recommendation contains the operational procedures for digital selective-calling (DSC) equipment whose technical characteristics are given in Recommendation ITU-R M.493. The Recommendation contains five annexes. In Annexes 1 and 2 the provisions and p
ITU-R M.541-9-2004 history
2015ITU-R M.541-2015 Operational procedures for the use of digital selective-calling equipment in the maritime mobile service
2004ITU-R M.541-9-2004 Operational Procedures for the Use of Digital Selective-Calling Equipment in the Maritime Mobile Service
ITU-R M.541-9-2004 Operational Procedures for the Use of Digital Selective-Calling Equipment in the Maritime Mobile Service was changed to ITU-R M.541-2015 Operational procedures for the use of digital selective-calling equipment in the maritime mobile service.