Hand-held telephone line signaling test instrument
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United States of America Patent
Stats
-
Jun 27, 1989
Grant Date -
N/A
app pub date -
Jun 29, 1988
filing date -
Jun 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hand-held telephone line signaling test instrument is described which provides test and timing measurment for telephone lines employing DID, DOD and POTS trunk lines. The hand-held instrument is capable of sourcing wink-start reverse battery protocol and DTMF, dial pulse or MF dial codes for testing a DID trunk. The device also incorporates a termination impedance and dial code receivers for DTMF, dial pulse and MF dialing codes. Analysis and comparison of the timing and measurements is performed by an internal microprocessor-based system with the results of the measurements displayed on an LCD alphanumeric display.
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Family
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Cited Art Landscape
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