本帖最后由 百利 于 2011-6-16 17:30 编辑
MMSI与CallSign是和船旗相关的–无庸置疑。问题是他们是究竟从哪里来的呢?
手头掌握的,和查询的一些资料,供讨论: 推测1:MMSI与CallSign是由ITU(国际电信联盟)管理的。请见http://www.itu.int 信息来源1:Communications at Sea (作者Mike Harri)一书中,第26页中提到 “Maritime Mobile Service Identity (MMSI) like a telephone number or radio calisign, every GMDSS vessel is issued by its radio licensing authority with a 9-digit MMSI.This Is built in to all DSC and other GMDSS equipment, and except in special cases the equipment should not be transferred to another vessel. Once a radio is programmed with its MMSI, it cannot be changed by the user but only by a qualified technician.” 海上移动业务标识(MMSI),类似于电话号码或无线电呼号,9位数字的MMSI由无线电业务管理当局授予每艘GMDSS船只… 信息来源2:(h t t p://w w w.milltechmarine.com/About-MMSI_ep_69.html)网页上的“The FCC assigns MMSIs in accordance with the International Telecommunication Union (ITU) Radio Regulations and periodically notifies the ITU of assignments made to vessels traveling or communicating internationally.” 美国联邦通信委员会分配按照国际电信联盟(ITU)无线电规则的规定,发放并定期通知ITU,所发给行驶或作业的船只… 信息来源3:(h t t p://forum.digital-seas.com/topic/imo-number)The MMSI number for a vessel is issued by the flag country of the vessel along with the call sign. MMSI由船旗国连同CallSign一并发放给船舶。 信息来源4:http://www.ofcom.org.uk/static/archive/ra/publication/ra_info/ra145gn.htm中6.3节提到
“The Radio Licensing Centre issues MMSIs free of charge as part of a Ship Radio Licence.” 无线电牌照中心免费发放MMSI,作为船舶电台执照的一部分。
推测2:各国(包括船旗国)都有ITU的代理,按照ITU的规定发放MMSI与CallSign |