Telephone monitoring device

Telephonic communications – With usage measurement – Call traffic recording or monitoring

Patent

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Details

379119, 379131, H04M 1518

Patent

active

046566570

ABSTRACT:
There is disclosed a telephone monitoring system which system is coupled to the tip and ring lines associated with a telephone subset and which system is operative to provide output data indicative of the date and time a call is initiated, the telephone number and area code of a place called, the total minutes and seconds of the call placed, the time and day a call is started and discontinued as well as the time and date of all incoming calls. The system further includes separate timing interval apparatus to notify a user that a predetermined time period has elapsed during a telephone conversation. The system includes apparatus for monitoring the status of the subset in an off-hook and on-hook condition and to initiate various timing cycles when the subset is off-hook including a called number storage register for storing information indicative of a call to be placed by the subset during normal operation. The above noted data is applied to input terminals of a printer or display for providing the user with a hard copy printout of the data or a visual display of the same.

REFERENCES:
patent: 3769463 (1973-10-01), Graham et al.
patent: 4275272 (1981-06-01), Mennino Jr. et al.
patent: 4404433 (1983-09-01), Wheeler et al.
patent: 4410765 (1983-10-01), Hestad et al.

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