Message formats and protocols for serial data interfaces in alarm transmission systems part 2 : common application layer protocol 报警传输系统串行数据接口的信息格式和协议第2部分：公用应用层协议
Osi information technology - use of x . 25 packet layer protocol to provide the osi connection - mode network service over the telephone network 信息技术.使用x . 25包层协议对电话网络提供开放式系统互连
Osi information technology - use of x . 25 packet layer protocol in conjunction with x . 21 x . 21 bis to provide the osi connection - mode network service 信息技术.使用x . 25包层协议及x . 21 x . 21二度提供开放式系统互连
Each layer employs the services of the layer underneath , which enables a top layer protocol to transmit messages over the physical network 每个层都使用下面一层的服务，这使得顶层协议能够在物理网络上传输消息。
Terminal equipment . syntax - based videotex lower layer protocols using packet mode access over the public switched telephone network 终端设备.在公共交换电话网络上使用文件包方式存取的基于语法的电视电文低层协议
The purpose of this layer is to define the application layer protocol for the exchange of cellular subscriber information between networks 这一层的主要用途是为了定义在网络间交换蜂窝网络用户信息的应用层协议。
Digital data communications for measurement and control - fieldbus for use in industrial control systems - application layer protocol specification 测量和控制用数字数据通信.工业控制系统用现场总线.应用层协议规范
Terminal equipment ; syntax - based videotex lower layer protocols using packet mode access over the public switched telephone network ; english version ets 300221 : 1993 终端设备.使用公共交换电话网络分组方式存取的基于语
Users can design their own satellite network simulation model based on the satellite simulation framework to study transport layer protocols 用户可以在卫星网络仿真架构的框架下设计研究传输层协议的卫星网络仿真模型。
Association control service element . an osi application - layer protocol . the method used in osi for establishing a connection between two applications 关联控制服务元素，一种osi应用层协议，用来在两个应用程序中建立连接。
