Wiretap detector and telephone loop monitor

Details Wiretap detector and telephone loop monitor Wiretap detector and telephone loop monitor

1990-09-25

1992-08-25

Schreyer, Stafford D.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

For detection of eavesdropping device

379 21, 379 30, H04M 168

Patent

active

051425602

ABSTRACT:
A novel method and improved system for the continuous detection monitoring of authorized/unauthorized connections/disconnections including loop bridging wiretapping equipment capable of monitoring recording voice and/or data communications on the subscriber's local telephone loop.
In operation the detector monitor displays electrical changes in impedance condition and characteristics on the subscriber's local telephone loop to detect and monitor signaling, switching equipment and telephone lines connecting/disconnecting anywhere on the loop including the central exchange before, during and after the completion of a telephone call continuously.

REFERENCES:
patent: 1834992 (1931-12-01), Almquist
patent: 4658099 (1987-04-01), Frazer
patent: 4680783 (1987-07-01), Boeckmann
patent: 4760592 (1988-07-01), Hensley

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