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近年来,世界上一些发达国家掀起了建设信息高速公路热潮。我国于1993年由中国科学院院士叶培大教授等专家提出建设“中国高速信息网计划”。与此同时,邮电部门加快了通信网的建设,“八五”期间全国建成了22条国家一级干线光缆(总长达3.2万公里)、20条数字微波干线和20个大中型卫星通信地面站。全国分组交换公用数据网进行了扩容,网络覆盖了包括267个城市,拥有2万端口,通达21个省、市的高速数字数据骨干网(DDN)已投入运行,并与世界20个国家和37个分组
In recent years, some developed countries in the world set off a boom in building an information superhighway. China in 1993 by the Chinese Academy of Sciences Professor Ye Peida and other experts proposed the construction of “China’s high-speed information network plan.” At the same time, the post and telecommunications department accelerated the construction of the communications network. During the “Eighth Five-Year Plan” period, 22 national-level trunk optical cables (totaling 32,000 km in length), 20 digital microwave mains and 20 large and medium-sized satellite communications ground stations . The national packet switched public data network has been expanded. The network covers 267 cities, with 20,000 ports and has access to high-speed digital data backbone network (DDN) of 21 provinces and municipalities. The network has been put into operation with 20 countries and 37 A group