一、中国正在加速建设国家公用通信网 中国的通信建设已进入起飞阶段,通信网络规模迅速扩大。自1985年开始,邮电通信能力的增长速度超过了国民经济(GNP)的发展速度,进入90年代以来继续保持了加速增长的势头,1991～1994年的4年间,电话主线、长途电路和邮电业务收入的年均增长率分别达到41.2％、57.4％和48.7％,这样快的发展速度在通信发展史上是少见的。 目前中国正在建设以光缆为主体、以数字微波和卫星为辅助手段的全国数字干线传输网络,并在此基础上,加速全国城多自动电话交换网、分组数据交换网、数字数据传输网、无线移动通信网等业务网的建设。1994年全国新建长途干线光缆7条,卫星地面站14座,长途电路数增加3.6％;净增局用电话交换机1900万线,增长63.5％,电话网总容量达到6160万门;电话放号1083万户(含移动电话),增长60.3％,全国电话主线普及率达到2.27％、话机普及率达到 First, China is accelerating the construction of a national public communications network China’s communications construction has entered a stage of take-off and the scale of its communications network has rapidly expanded. Since 1985, the growth rate of post and telecommunications communication capabilities has exceeded the growth rate of the national economy (GNP). Since the 1990s, the momentum of accelerated growth has continued. During the four years from 1991 to 1994, the main lines of telephone, long distance lines and post and telecommunications services The average annual growth rate of revenue reached 41.2%, 57.4% and 48.7% respectively. Such a rapid pace of development is rare in the history of communications. At present, China is building a national digital trunk transmission network with optical fiber as its mainstay and digital microwaves and satellites as its aids, and on this basis, it will speed up the construction of a nationwide multi-national automatic telephone exchange network, a packet data exchange network, a digital data transmission network, Mobile communications network and other business network construction. In 1994, there were 7 new long-distance trunk optical fiber cables in the country, 14 satellite ground stations, and the number of long-distance circuits increased by 3.6%. Net domestic telephone exchange of 19 million lines increased by 63.5% and the total telephone network capacity reached 61.6 million. Telephone number 1083 Million households (including mobile phones), up 60.3%, the national telephone mainline penetration rate reached 2.27%, the phone penetration reached