Connection of vsat systems with packet - switched public data networks based on x . 25 procedures Vsat系统与基于x . 25规程的分组交换公用数据网的连接
International data transmission services and optional user facilities in public data networks and isdns 公用数据网与isdn网的国际数据传输业务和任选用户设施
Network - to - network interface between public data networks providing the frame relay data transmission service 提供帧中继数据传输业务的公用数据网之间的网络?网络接口
Interworking between packet switched public data networks and public maritime mobile satellite data transmission systems 分组交换公用数据网和公用海事移动卫星数据传输系统之间的互通
Message formats and protocols for serial data interfaces in alarm transmission systems part 3 : common data layer protocol 报警传输系统串行数据接口的信息格式和协议第3部分：公用数据链路层协议
Dte interface between data terminal equipment and data circuit - terminating equipment for start - stop transmission services on public data networks 公用数据网上起止传输业务使用的数据终端设备
Communication networks and systems in substations - basic communication structure for substation and feeder equipment - common data classes 变电所的通信网络和系统.变电所和馈电设备用基本通信结构.公用数据种类
Communication networks and systems in substations part 7 - 3 : basic communication structure for substation and feeder equipment common data classes 变电站通信网络和系统.第7 - 3部分:变电站和馈线设备的基本通信结构.公用数据类
Communication networks and systems in substations - part 7 - 3 : basic communication structure for substation and feeder equipment ; common data classes 变电所的通信网络和系统.第7 - 3部分:变电所和馈电设备用基本通信结构.公用数据种类
Dte interface between data terminal equipment and data circuit - terminating equipment for public data networks providing frame relay data transmission service by dedicated circuit 通过专用电路提供帧中继数据传输业务的公用数据网使用的数据终端设备
