Study on the Alternate Means of High Speed Telegraph - relay Network

转 报高速 网备份手段的研究

With the IMS technology continues to rise the communications environment has undergone great changes from a simple manner of telegraph and telephone to the diversification of communication including voice data and multimedia and network convergence technology emerged .

随着IMS技术的不断兴起，通信的环境已经发生了很大的变化，从简单的 电报电话方式 扩充到包括语音、数据和多媒体在内的多元化通信， 网络融合技术应运而生。

Telegraph equations can be looked as cascade connection of two-port network of lumped circuit of transmission line is a hyperbolic partial differential equations .

传输线可以看作集中参数二端口 网络的级联，其数学模型& 电报方程是一阶双曲型偏微分方程组。