中国正在加速国家信息基础设施建设本刊记者［本刊北京讯］我国正在加速建设以光缆为主体、以数字微波和卫星通信为辅助手段的大容量数字干线传输网，本地中继网和用户接人网也正在逐步实现光缆化。在上述基础传输网的基础上，建设了全国城乡自动电话网、公用数据通信网、... China is Accelerating the Construction of National Information Infrastructure China’s Correspondence [Beijing News] China is speeding up the construction of a large-capacity digital trunk transmission network with optical fiber as its mainstay and digital microwave and satellite communications as its aids, as well as the local trunk network and subscriber terminals People network is also gradually realized cable. Based on the above basic transmission network, the construction of the national urban and rural automatic telephone network, public data communication network, ...