Pay phone call control apparatus for allowing calls using pre-paid cards
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United States of America Patent
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Oct 8, 1996
Issued Date -
N/A
app pub date -
Feb 16, 1995
filing date -
May 29, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A call control apparatus for a pay phone includes a reading unit, a calculating unit, and a call enable unit. The reading unit reads out value information of an inserted card. The calculating unit calculates a call time corresponding to a ratio of the value information to a unit call fee when the value information read out by the reading unit does not reach the unit call fee. The call enable unit allows a call service by the call time calculated by the calculating unit.
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