Programmable telephone switcher
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 16, 1987
Grant Date -
N/A
app pub date -
Sep 20, 1985
filing date -
Sep 20, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The programmable telephone screening device routes an incoming call to a selected telephone device, depending on preestablished device priorities and upon access codes dialed by the caller. The device provides call hold, call forwarding and automatic dialing and is capable of testing the telephone utility network to determine DTMF and pulse dialing compatability. The device generates ringer signals for directly energizing the ringer circuits of standard telephone devices.
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Family
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Cited Art Landscape
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