Telephone set-computer terminal assembly with a single decimal k

Details Telephone set-computer terminal assembly with a single decimal k Telephone set-computer terminal assembly with a single decimal k

1984-06-22

1986-05-27

George, Keith E.

H04M 1100

Patent

active

045916624

ABSTRACT:
A telephone set-computer terminal assembly is provided having a single decimal keyboard and a switchable local supply. The telephone interface, connected to the decimal keyboard, is supplied by its line input through a switching relay which connects it at one time to a local power supply of the man-machine interface equipment and at another to the line through a switch depending on whether the line is unlooped or not. The telephone interface is connected to the man-machine interface equipment by message communication lines comprising a galvanic insulation device.

REFERENCES:
patent: 4051326 (1977-09-01), Badagnani et al.
patent: 4415774 (1983-11-01), Driver
patent: 4417099 (1983-11-01), Pierce
patent: 4506112 (1985-03-01), Bitsch
patent: 4524244 (1985-06-01), Faggin et al.

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