一、Cornerstone的目标 在信息高速公路已成为大众广泛谈论的话题时,产业界也正在积极探索和开发构成信息高速公路基础的网络技术。目前,在主干线上采用光纤数字传输技术建设宽带网络,已在设备供应商、运营商乃至各国政府主管部门间形成了共识。然而如何把“信息高速公路”铺到广大用户的“门 First, the Cornerstone goal When the information superhighway has become a widely talked about topic, the industry is also actively exploring and developing the information technology based on the network of the highway. At present, the use of fiber optic digital transmission technology in the trunk line to build broadband networks has reached a consensus among equipment suppliers, operators and even government authorities of various countries. However, how to “information superhighway” spread to the majority of users "door