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1988年来,苏联邮电部向国外几个电信主管部门和公司提出建议,在苏联领土上建一条565Mb/s的现代光纤通信线路,称为TSl计划。根据现有布局,太平洋区域各国(或地区)与欧洲间的业务要经过世界电信网上的三段光纤通信线路:跨太平洋线路、美国领土上的线路和跨大西洋线路。按TSL计划,到1995年,太平洋区域国家(或地区)与欧洲国家间的光通信路径有三条: 一跨太平洋光缆TPC3/HAW4,FPC4或NPC,穿过美国,再经过跨大西洋光缆; 一跨印度洋光缆SEA-ME-WE-2,经印度洋、海湾、红海和地中海;
Since 1988, the Soviet Post and Telecommunication Department has proposed to several foreign telecommunication administrations and companies to build a 565Mb / s modern optical fiber communication line on the territory of the Soviet Union, which is called TSl program. Under the current layout, the operations of countries (or regions) in the Pacific region and Europe go through three segments of the World Telecommunication Network: trans-Pacific routes, U.S. territories and transatlantic routes. According to the TSL program, there are three optical communication paths between countries in the Pacific region and European countries by 1995: a trans-Pacific cable TPC3 / HAW4, FPC4 or NPC across the United States and then transatlantic fiber optic cable; a cross Indian Ocean Cable SEA-ME-WE-2, via the Indian Ocean, the Gulf, the Red Sea and the Mediterranean;