美军和南朝鲜电信管理局联合建造由北部到南部的450公里单模光纤干线。第一阶段,在北部业已投入运行,第二阶段,南部中心也于六月接通。第二阶段的一些试验结果证明是良好的。在整个南部第三阶段的干线敷设已经开始,竣工日期已作安排,并于十一月份接通。第四阶段计划明年竣工,主要是把南方的几个支路连接起来,美军在这里有三个基本设施。 KTA-国营通信垄断公司,和美军正在分享全国唯一的大部分处于公路下面的一条管道线路。管道中有六条内管路,美军和KTA各使用三条。目前,KTA至少已在使用两条,而美军仅使用一条(内有六根光 The U.S. military and South Korea’s Telecommunication Authority jointly built a 450 km single-mode fiber optic trunk line from the north to the south. The first phase, already in operation in the north, and the second phase, the southern center, was also opened in June. Some of the second phase of the test results proved to be good. Construction of the trunk line has commenced in the third phase of the southern part of the country. The completion date has been scheduled and will be opened in November. The fourth phase is scheduled to be completed next year, mainly linking several branches in the south. The U.S. military has three basic facilities here. KTA, a state-owned communications monopoly, and the U.S. military are sharing the only pipelines in the country that are below the road. There are six inner pipes in the pipeline and three each in the U.S. Army and KTA. Currently, KTA has been used at least two, while the US military uses only one (there are six lights