Modem fault detector and corrector system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 24, 1983
Grant Date -
N/A
app pub date -
Jul 31, 1981
filing date -
Jul 31, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
International Classification(s)
Cited Art Landscape
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