公用数据网 common data network; pdn public data network; pfm pbic data netwok; pfm public data network; public data networks(pdns); public dedicated data network
包交换公用数据网 packet switched public data network pspdn
Dte information systems - interface between data terminal equipment and data circuit - terminating equipment for terminals operating in the packet mode and accessing a packet - switched public data network through switched access 信息系统.以分组模式和通过转换访问的分组转换公用数据网络运作的终端用的数据终端设备