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1997年12月中旬,全部采用国产光缆和国产四次群光纤传输设备的国家一级通信干线工程——郑徐光通信干线工程,通过了邮电部委托中国电信总局组织的竣工终验。郑州——徐州光通信干线工程,西起河南省郑州市,经开封、商丘、永城、安徽省淮北市,终至江苏省徐州市,全长472.3km。其中,河南382.7km、安徽72.2km、江苏17.4km。沿途设郑州、中牟、开封、兰考、民权、宁陵、商丘、虞城、夏邑、永城、淮
In mid-December of 1997, ZhengXuGuang communication trunk project, a national first-class communication trunk project using domestic optical fiber cables and domestic four-group optical fiber transmission equipment, passed the final inspection of completion commissioned by China’s Ministry of Posts and Telecommunications. Zhengzhou - Xuzhou optical communications trunk project, west of Zhengzhou City, Henan Province, after Kaifeng, Shangqiu, Yongcheng, Huaibei City, Anhui Province, Xuzhou City, Jiangsu Province, finally, a total length of 472.3km. Among them, Henan 382.7km, Anhui 72.2km, Jiangsu 17.4km. Along the way set Zhengzhou, Zhongmou, Kaifeng, Lankao, civil rights, Ningling, Shangqiu, Yucheng, Xiayi, Yongcheng, Huai