Telephone call routing and charging system
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United States of America Patent
Stats
-
Oct 18, 1983
Grant Date -
N/A
app pub date -
Jun 4, 1981
filing date -
Jun 4, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A telephone call routing and charging system using processor circuitry can automatically select the most economical route for individual telephone calls. The system includes a signal direction detector for automatically determining the time span of a call for charge purposes from the time the call is answered to the time the call is terminated.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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