重庆大学现代通信系统实验代码，配置SDH业务，本代码功能：配置SDH1与SDH3的点对点以太网业务，622M，每个用户4M带宽。-Chongqing University experiment of modern communication systems code, configuration SDH services, the code function: point to point configuration SDH1 and SDH3 Ethernet, 622M, 4M per us