80年代中期以后,世界通信产业呈现出飞速发展的态势,信息高速公路的构想和规划已经付诸实施,通信网正在加快向综合化、宽带化、智能化、个人化方向发展。上海市电话局抓住这一历史契机,近年来一直保持持续规模发展。目前,全网交换点量已达 Since the mid-1980s, the world telecommunications industry has shown a rapid development. The concept and planning of the information expressway have been put into practice. The communications network is accelerating its development toward integration, broadband, intelligence and personalization. Shanghai Municipal Bureau of telephone to seize this historic opportunity, in recent years has been to maintain the scale of development. At present, the whole network exchange points have been reached