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上海去年净增长途电路1万条,累计开通电路57万条,全自动业务比例达999%。上海目前已成为国内8个长途电信大区的传输中心之一,并正朝国内传输全数字化方向迈进。上海自京沪第一条数字微波干线开通以来,长途传输电路开始向大容量、数字化方向发展,先后建成了国际、国内卫星电路、
Shanghai last year’s net growth of 10,000 circuits, a total of 570,000 open circuit, fully automated business ratio of 999%. Shanghai has now become one of the 8 transmission centers for long-distance telecommunication in China and is moving in the direction of full digital transmission in China. Since Shanghai’s first digital microwave trunk line was opened in Shanghai, the long-distance transmission circuit started to develop in a large capacity and digitized direction. It has successively built up international and domestic satellite circuits,