AT&T国际部和四个亚洲长途通信公司已经达成了一个初步协议,建造连接日本、南朝鲜和香港的海底光缆。预计在1990年底可完工的这根光缆是宏大的东亚海底光缆网计划的一部分。连接日本、南朝鲜和香港的线路长为2796英里,用二对光纤制成,总的传输容量同Trans-Pac3线路(横跨太平洋3号线路)相同,即140Mb/s或每根光纤传输2000话路(64kb/s)。建设费用预计达2.2亿美元,日本的国际电信电话公司将支付费用的33％,即6900万美元;香 AT & T International and four Asian long distance carriers have reached a preliminary agreement to build a submarine cable linking Japan, South Korea and Hong Kong. The cable, expected to be completed by the end of 1990, is part of the ambitious East Asia Submarine Cable Network project. The length of the line connecting Japan, South Korea and Hong Kong is 2,796 miles and is made of two pairs of fibers with the same total transmission capacity as the Trans-Pac3 line (across the Pacific Line 3), which is 140Mb / s or per fiber transmission 2000 Road (64kb / s). Construction costs are expected to reach 220 million U.S. dollars, Japan’s international telecommunications company will pay 33% of the cost, or 69 million U.S. dollars