论文部分内容阅读
一、问题的提出全国民航自去年引进并组建帧中继交换网以来,先后将分组交换网信号、转报机信号接入网络。发送端分组网信号在接入帧中继交换机FR800后,由软件控制进行将X.25协议转换成帧中继协议,经网络传输后,由接收端帧中继设备再进行协议转换成分组网信号发送到接收端的分组网。而转报机信号为比特信号,通过物理接口与帧中继接入设备ACP系列相连,转报机信号通过ACP接入设备后,转换成帧
First, the issue put forward National Civil Aviation since the introduction and formation of Frame Relay Switching Network last year, has packet switching network signals, reporting machine signal access network. After the sender packet network access signal frame relay switch FR800, the software controls the X.25 protocol into a frame relay protocol, the network transmission, by the receiving end of the frame relay equipment and then converted into a packet network Signals are sent to the receiving end’s packet network. And the signal of the repeater is a bit signal, which is connected to the frame relay access device ACP series through a physical interface. After the signal of the repeater is connected to the device through the ACP, the signal is converted into a frame