论文部分内容阅读
日立电缆有限公司从AT&T公司获得300亿日元(2.4亿美元)的海底光缆合同。日立公司将提供传输容量高达120000话路(每个话路64kb/s)的新颖光缆,AT&T计划用该光缆把日本、美国、夏威夷和关岛同其12亿美元的TPC-5海底网络相连接。AT&T投资了4.02亿美元,占该系统的35％。参加该系统投资的还有34个国家的46个电讯公司。 AT&T和KDD公司(日本的第1号国际电话公司)联合开发两期工程,第一期工程将于1995年开始,1996年底全部开通。这个5Gb/s系统用作环路,连接美国西海岸的两处与夏威夷、关岛和日本的另外两处。日立公
Hitachi Cable Co., Ltd. obtained a 30 billion yen (US$240 million) submarine cable contract from AT&T. Hitachi will provide a new optical cable with a transmission capacity of up to 120,000 voice channels (64kb/s per voice channel). AT&T plans to use it to connect Japan, the United States, Hawaii, and Guam to its $1.2 billion TPC-5 submarine network. AT&T invested 402 million U.S. dollars, accounting for 35% of the system. There are 46 telecommunications companies in 34 countries participating in the system. AT&T and KDD (Japan’s No. 1 International Telephone Company) jointly developed two phases of the project. The first phase of the project will begin in 1995 and will be fully opened by the end of 1996. This 5Gb/s system is used as a loop to connect two places on the west coast of the United States with two other places in Hawaii, Guam, and Japan. Hitachi