目前 ,邮政综合网的建设已取得阶段性成果 ,一个纵横交错的ＤＤＮ专线互联骨干网已经形成。下面就如何依托邮政综合网实现绿卡、电子化支局、办公管理等应用子网的资源共享试做探讨。一、应用子网现状各个城市绿卡子网的应用系统并不完全一致 ,但网络结构是类似的。全国绿卡网 At present, the construction of the postal integrated network has achieved initial success. A crisscross DDN backbone network has been formed. Here’s how to relying on the postal integrated network to achieve green card, electronic branch offices, office management and other subnets of resource sharing try to explore. First, the status of the application subnet Green card subnet of cities in the application system is not exactly the same, but the network structure is similar. National Green Card Network