Key telephone system

Details Key telephone system Key telephone system

1984-09-17

1986-06-17

Dwyer, James L.

179 99LS, H04M 300

Patent

active

045958009

ABSTRACT:
A key telephone system includes a plurality of key telephone stations, a switching network for selectively connecting the key telephone stations to CO/PBX lines or intercom lines, a system control unit and a system data memory unit, the system control unit controlling the key telephone stations and switching network in accordance with data stored in said system data memory unit. At least one of said key telephone stations is of the Class 2 type which can function in the normal operating mode and also in the system data setting mode wherein it operates as an input device for setting system data in the system data memory unit. The key telephone system further includes a menu data memory unit in which is stored a plurality of combinations of system data for each kind of service. The Class 2 key telephone station in the system data setting mode is operated by selectively depressing its push buttons to thereby load selected system data from the menu memory unit into the system data memory unit.

REFERENCES:
patent: 4203011 (1980-05-01), Coviello
patent: 4277649 (1981-07-01), Sheinbein
patent: 4278844 (1981-07-01), Jones
patent: 4379950 (1983-04-01), Ahmed
patent: 4453040 (1984-06-01), Wolf et al.
patent: 4491693 (1985-01-01), Sano et al.
patent: 4517409 (1985-05-01), Nagasaki
Dodman, "Vantage 12: A Key Telephone System with Flexible Features", Telesis, 1982, vol. 1, pp. 30-37.

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