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目前世界上最先进的同步数字系列(SDH)即将进入武汉市市话网中。武汉市电信局与武汉邮电科学研究院于1995年11月7日举行了同步数字网工程签字仪式。总投资达800多万美元的这一工程是目前全国最大的市话中继网。武汉市电信局建设的该SDH网使用瑞典爱立信(ERICSSON)技术,由武汉邮电科学研究院提供设备,整个工程将于1996年完成。届时武汉市29个支局将全部使用SDH设备连接起
At present, the world’s most advanced synchronous digital series (SDH) is about to enter the Wuhan Municipal Bureau network. Wuhan Municipal Bureau of Telecommunications and Wuhan Institute of Posts and Telecommunications on November 7, 1995 held a synchronous digital network project signing ceremony. A total investment of more than 800 million US dollars of this project is currently the country’s largest local telephone relay network. The SDH network constructed by Wuhan Telecom Bureau uses the technology of Sweden Ericsson (ERICSSON) and is provided by Wuhan Institute of Posts and Telecommunications. The whole project will be completed in 1996. By then, all 29 branch offices in Wuhan will use SDH equipment to connect all