The Recommendation contains the operational procedures for digital selective-calling (DSC) equipmentwhose technical characteristics are given in Recommendation ITU-R M.493. The Recommendation containssix annexes. In Annexes 1 and 2 the provisions and procedures are described for distress, urgency and safetycalls and for routine calls, respectively. In Annexes 3, 4 and 5 the operational procedures for ships, for coaststations and Man overboard devices are described and Annex 6 lists the frequencies to be used for DSC.
ITU-R M.541-10-2015由国际电信联盟 IX-ITU 发布于 2015-10-01。
ITU-R M.541-10-2015 在中国标准分类中归属于: M39 传真电报设备。
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