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目前,中国电信国家公用移动电话网分为数字网和模拟网两种。数字网包括G网,模拟网包括A网和B网。G网、A网、B网三网覆盖地域究竟有多大呢? 为满足社会对移动通信的需求,邮电部近年来加快了移动电话业务的发展速度,在完成900MHz模拟蜂窝移动电话系统全国联网,实现自动漫游的同时,995年,中国电信开通了“139”GSM数字移动电话网(简称G网)。该网络采用
At present, China Telecom national public mobile phone network is divided into two kinds of digital networks and analog networks. Digital network includes G network, analog network including A network and B network. In order to meet the demand of the society for mobile communication, the Ministry of Posts and Telecommunications has accelerated the development of the mobile phone business in recent years. After completing the national networking of the 900MHz analog cellular mobile phone system, In 995, China Telecom launched “139 ” GSM digital mobile phone network (referred to as G network) for automatic roaming. The network is used