Alarm information transmission system for coin telephone
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United States of America Patent
Stats
-
Feb 17, 1987
Grant Date -
N/A
app pub date -
Oct 7, 1985
filing date -
Oct 12, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a coin telephone, a self diagnosis function and an alarm information transmission function upon formation of a loop in an off-hook mode are utilized. Upon reception of a ringing signal from a maintenance control center, self diagnosis is performed. Upon detection of a failure, a content of the failure and a control number of the coin telephone are sent to the maintenance control center. A failure check for a coin telephone which is not frequently used can be performed from the telephone center without requiring an off-hook operation.
First Claim
Family
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Cited Art Landscape
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