Information transmission system and method

本发明涉及传输线路上出现故障时的信息传输系统。本发明提供一种在发生多重故障时也能继续进行传输高可靠的信息传输系统。该系统设置了两路骨干传输线路，传输终端与两路骨干传输线路连接。发送信息时对两路骨干传输线路发送数据。各传输终端经常检测接收状态。如果在一方的骨干传输线路中不能接收数据时，利用中转功能将传输到另一方的骨干传输线路的数据中转给上述一方的骨干传输线路。 The present invention provides a high reliability information transmission system which can continue transmission at the occurrence of multiple failures. Providing two key transmission lines, connecting transmission terminals to both of the key transmission lines, transmitting data to both key transmission lines, causing respective transmission terminals to always check reception status, and causing the relaying function to relay data from one transmission line to the other transmission line when the data does not come from one of the transmission lines.