Telephone toll call security and logging device and method

Details Telephone toll call security and logging device and method Telephone toll call security and logging device and method

1980-09-05

1982-06-01

Brigance, Gerald L.

179 71TP, 179 18B, 179 18DA, H04M 166

Patent

active

043329829

ABSTRACT:
A device and embodied method to control access to and log telephone calls made upon a long-distance telephone network includes a telephone instrument (11), a telephone line interface (12) for selectively connecting the telephone instrument (11) to an incoming telephone line (T.sub.1, R.sub.1) and a local telephone power supply system (23), which telephone line interface (12) provides output signals indicative of the operational status of the telephone instrument (11) and all numbers dialed on the telephone instrument (11), an access code memory (50) for storing and providing output signals indicative of a plurality of security codes authorized for utilization of the long-distance telephone network, a first (51) and second (52) log memory for storing data regarding all outgoing long-distance telephone calls made from the telephone instrument (11), and a control unit (15) which receives the output signals from the telephone line interface (12), and the access code memory (50). The control unit (15) monitors the telephone line interface (12) and upon detection of a dialed number initiating a tie-in to the long-distance telephone network directs connection of the telephone instrument (11) to the local telephone power supply system (23) and connection of the incoming telephone line (T.sub.1, R.sub.1) to a holding load (21). The control unit (15) compares the next dialed number received to those stored in the access code memory (50) to determine the validity thereof and upon determination of a valid access code directs reconnection of the telephone instrument (11) with the incoming telephone line (T.sub.1, R.sub.1) and further directs one of the log memories (51, 52) to record the dialed access code and telephone number.

REFERENCES:
patent: 3546381 (1970-12-01), Foley et al.
patent: 3770893 (1973-11-01), Conerly
patent: 3806652 (1974-04-01), Woolf et al.
patent: 3873781 (1975-03-01), Nissim
patent: 3934095 (1976-01-01), Matthews et al.
patent: 4045619 (1977-08-01), Harrington
patent: 4099033 (1978-07-01), Murray
Benner, Trimming the Fat From Phone Costs, INC., pp. 66-69, (May 1979).
Mandell, Cutting Phone Charges with Computers, Computer Decisions, pp. 28-30 and 73-76, (Mar. 1979).
Letter from Peter French, Vice-President of Natel Systems, Inc., including accompanying literature.

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