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在经济飞速发展的时代中,信息成为21世纪人类赖以生存和发展的最重要的战略资源和独特的生产要素。在几种常用的通信工程中的传输技术的原理上的异同的基础上,通过比较研究探讨出长途通信中的最佳传输技术.最好的长途传输技术不仅能保证长途通信网的安全畅通,还能使网路建设和维护成本最少,给途经地区带来良好的效益。
In an era of rapid economic development, information has become the most important strategic resource and a unique factor of production for the survival and development of mankind in the 21st century. Based on the similarities and differences of the transmission technologies in several common communication projects, the best transmission technology in long-distance communication is discussed through comparison and study.The best long-distance transmission technology can not only ensure the security and smoothness of the long-distance communication network, But also minimize the cost of network construction and maintenance and bring about good benefits to the region.