Three relay C. O. trunk interface
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United States of America Patent
Stats
-
Aug 25, 1987
Grant Date -
N/A
app pub date -
Jan 15, 1985
filing date -
Jan 15, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An interface system having a single detector to detect incoming signalling including ringing, tip ground, forward loop current, and reverse loop current. Relays and bias control are utilized to perform outgoing signalling and for configuring the system to defect the various incoming signalling states with a single detector.
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Cited Art Landscape
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