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1 中国电信传输网基本情况中国电信从 80年代开始在全国范围内建设光缆传输网络。到 2 0 0 0年 ,已在全国范围内建成八纵八横的省际干线传输网 ,光缆总长度达 7万多公里 ,覆盖所有省会城市 ;京汉广以东地区覆盖80 %以上的地市级城市 ;省内干线也完全实现光缆化 ,全国省内干线总
1 Basic Conditions of China Telecom Transmission Network Since the 1980s, China Telecom has established a fiber optic cable transmission network across the country. By the year 2000, a total of eight vertical and eight horizontal inter-provincial trunk transmission lines have been built across the country. The total length of optical fiber cables is over 70,000 km, covering all capital cities. The east-west Beijing-Wuhan region covers more than 80% of the total land area Municipal-level cities; the trunk lines in the province are also fully realized in optical cables, and the total number of trunk lines in the whole province is also large