公开(公告)号：US4385392A

公开(公告)日：1983-05-24

申请号：US288980

申请日：1981-07-31

Applicant: Gary W. Angell ,  C. Kenneth Miller

Inventor： Gary W. Angell ,  C. Kenneth Miller

IPC: H04L1/22

CPC classification number: H04L1/22

Abstract: A modem fault detector and corrector system including: a first modem including a first transmitter and first receiver and a second modem including a second transmitter and second receiver; switch means for selectively switching the first and second transmitters on and off of a transmission line; and the first and second receivers on and off of a receiver line; and for connecting one of the receivers with the output of either of the first and second transmitters; means for monitoring the status of each of the modems; means for correlating transmit data with receive data; means for sequencing the switch means to enable the means for correlating to compare transmit data selectively with the output of the first transmitter and the second transmitter; and means, responsive to the means for monitoring, the means for correlating, and the means for sequencing for detecting a malfunction in one of the first modem, second modem and transmission-receiver lines and directing the switch means to replace a malfunctioning on-line modem with the off-line modem.

Abstract translation: 一种调制解调器故障检测器和校正器系统，包括：包括第一发射机和第一接收机的第一调制解调器和包括第二发射机和第二接收机的第二调制解调器; 开关装置，用于选择性地将第一和第二发射器切换到传输线路上; 以及接收器线路上和之外的第一和第二接收器; 并且用于将所述接收机之一与所述第一和第二发射机中的任一个的输出连接; 用于监视每个调制解调器的状态的装置; 用于将发送数据与接收数据相关联的装置; 用于对所述开关进行排序的装置，用于使所述用于相关的装置与第一发射机和第二发射机的输出选择性地比较发射数据; 以及响应于用于监视的装置，用于相关的装置的装置和用于检测第一调制解调器，第二调制解调器和发送 - 接收器线路之一的故障的排序装置，并且引导开关装置来替换在线故障 调制解调器与离线调制解调器。