Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent
1989-02-10
1991-02-12
Brown, Thomas W.
Telephonic communications
Audio message storage, retrieval, or synthesis
Multilingual system or operation
379 98, 379189, 379190, 379200, H04M 166, H04M 1100
Patent
active
049930621
ABSTRACT:
A telephone control system is provided for use between central office telephone equipment and a telephone line pair connected to a predefined telephone station. The telephone control system includes monitoring circuitry for monitoring the telephone line pair to identify predetermined signals. Control circuitry is responsive to the monitoring circuitry for selectively preventing or enabling a telephone call. Circuitry is provided for generating voice messages for transmission on the telephone line, such as to advise the user of time remaining for an established telephone call. Circuitry is provided for storing call information including a user identification number. Control circuitry is provided for detecting a first predetermined event, such as a predetermined time of day, and disconnecting the telephone line pair from the central office telephone equipment responsive to the detected first predetermined event. Control circuitry also detects a second predetermined event, such as a predetermined second time of day, and connects the telephone line pair to the central office telephone equipment responsive to the detected second predetermined event.
REFERENCES:
patent: 3773986 (1973-11-01), Tremblay
patent: 3786196 (1974-01-01), Gresham
patent: 4656651 (1987-04-01), Evans et al.
patent: 4661971 (1987-04-01), Nemchek
patent: 4794642 (1988-12-01), Arbabzadah et al.
patent: 4807277 (1989-02-01), Perry
"Ericsson BCS 10", M. J. F. Janson, Ericsson Review, No. 3, 1985, pp. 144-152.
Dula Eric S.
Hughes Lawrence R.
Brown Thomas W.
Communications Equipment and Engineering Company
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