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。
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。