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全球通数字移动电话历经数年发展,已经走入千家万户。自99年下半年起,由中宇移动通信有限责任公司授权北京中复电讯经营的铱卫星移动电话上市了。据闻这种由均匀分布在距地球780公里高空的77颗低轨卫星提供网络服务的通讯系统,收发信号直接通过卫星与地面通信网交换,是目前世界上唯一在地球表面任何地方都能拨打直通电话的新一代移动通信工具。 铱星移动电话可漫游到与铱卫星通信网有协议的GSM、AMPS、CDMA无线网中,如果选购双模铱星手机,在GSM网络服务区内换上GSM卡,可做GSM手机使用。
Global digital mobile phone after years of development, has entered millions of households. Since the second half of 1999, Iridium satellite mobile phones licensed by Beijing Zhongfu Telecommunications Co., Ltd. have been licensed by Zhongyu Mobile Communications Co., Ltd. It is reported that this kind of communication system, which is provided by 77 low-orbiting satellites at an altitude of 780 km above the earth, provides network services. The signals transmitted and received are directly exchanged with the terrestrial communications network through satellites. It is the only one in the world that can dial through anywhere on the surface of the earth A new generation of mobile phone communication tools. Iridium mobile phone can roam to Iridium satellite communication network has an agreement GSM, AMPS, CDMA wireless network, if you buy dual-mode Iridium phone, put in the GSM network service area into the GSM card, do GSM mobile phone use.