Method and apparatus for preventing return dial tone fraud in a cellular paystation
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United States of America Patent
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-
Oct 6, 1998
Issued Date -
N/A
app pub date -
Jun 20, 1995
filing date -
Oct 19, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cellular paystation system has a transceiver, paystation and an interface. The cellular paystation system operates to prevent return dial tone fraud by providing from the interface a first dial tone to a calling party using the paystation when an off-hook condition is first detected at the paystation by the interface, and then preventing another dial tone from being provided to the calling party until an on-hook condition of the calling party is detected by the interface at the paystation.
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