现代交换原理讲义CH1_交换概论ch2 通信信源模型-new070327_new-2CH2_交换网络ch3_Erlang拒绝和等待系统CH3_数字程控电话交换与电话通信网ch4_通信网络性能分析CH4_信令系统CH5_分组交换与分组交换网ch5_网络拓扑结构分析CH6_ISDN交换与综合业务数字网ch7_网络可靠性分析-Principles of modern exchange notes Introduction CH1_ exchange communication channel ch2

该平台是使用OPNET网络仿真软件实现包交换功能，比陈敏上面的功能要多一些-The platform is using OPNET network simulation software packet switching functions than Chen above functions to be more

邮件收发工具,可以自助开发企业信箱，也可以加密发送。-Compressed packet contains a dozen used to connect the NTP server, access to the network time, and update to the local program, absolute can use