新世纪即将来临,回顾过去,展望未来,不禁令人对新中国成立以来,特别是改革开放以来,我国电信网取得的举世瞩目的成就深感鼓舞,对廿—世纪中叶实现第三步战略目标满怀信心。廿世纪下半叶,随着微电子。计算机、集成电路技术,光电子技术、航天技术的发展,通信网络技术也经历了从人工到自动,从模拟到数字,从单—业务到综合业务的发展过程,在这个过程中,光纤通信、卫星通信、微波通信、程控交换以及移动通信等一系列先进的通信技术被我国通信网所采用。但是,在廿世纪九十年代出现了计算机网络技术与传统电话通信网络技术融合的趋势,特别是国际 With the advent of the new century, reviewing the past and looking forward to the future, we can not help but feel deeply encouraged by the remarkable achievements made by China’s telecommunications network since the founding of New China, especially since the reform and opening up, and achieved the third-step strategic goal in the mid-20s Confident. In the second half of the twentieth century, with microelectronics. The development of computer, integrated circuit technology, optoelectronic technology and aerospace technology has also experienced the development of communication network technology from manual to automatic, from analog to digital, from single-service to integrated service. In this process, optical fiber communication, satellite Communication, microwave communications, program-controlled exchange and mobile communications and a series of advanced communications technology used by China’s communications network. However, the convergence of computer network technology and traditional telephone communication network technology appeared in the 1990s, especially in the international