分布式数通设备仿真系统主要用于模拟现场的组网情况，实现模拟单台设备内部报文的转发和多台设备之间报文的转发流程。该系统主要基于Linux操作系统进行开发，涉及C语言与Socket编程，以核心控制模块为中心，通过网络协议与命令行、模拟设备和模拟网络数据测试仪3个模块建立连接运行环境。与传统仿真平台相比，该系统的突出特点是：在支持控制平面功能的基础上，可以结合转发平面模拟业务的转发流程，及时定位，解决测试过程中存在的数据流不通的问题，同时该系统还支持模拟网络数据测试仪，降低了工程测试成本，提高了研发效率。

The distributed data communication equipment is mainly used to simulate the communication net in the real environment. It can not only emulate the transmission process of messages in single equipment, but also emulate the forwarding process of messages among the equipment. The system is based on the Linux operating system, C programming language and Socket programming language. It takes the core control module as the center, and sets up connections among the command shell, simulated devices, and TestCenters by the network protocol. Compared with the traditional simulation system, based on the support from control plane, the proposed system combines the forwarding plane to simulate the forwarding process. Therefore, the system can locate the problem of the data flow timely and solve it immediately .On the other hand, the system can also simulate the TestCenters. As a result, it reduces the cost of the engineering test, and improves the research efficiency.