Infrared hookswitch for a telephone

Details Infrared hookswitch for a telephone Infrared hookswitch for a telephone

1988-05-02

1989-07-11

Ng, Jin F.

Telephonic communications

Terminal

Switch or switch actuator structure

379443, H04M 106, H04M 1100

Patent

active

048479004

ABSTRACT:
An optical hookswitch assembly useable on a telephone set as an optical communications port is disclosed. The hookswitch assembly is comprised of light emitting and detecting diodes so disposed in the telephone so as to detect the presence of a handset. A processor connectable to the telephone circuitry and the light emitting and detecting diodes is provided such that the telephone circuitry is activated by the processor when the light emitting and detecting diodes fail to detect the presence of a handset. The light emitting and detecting diodes are useable as an optical communciations port for accessing the processor by allowing an external computer to communicate with the processor via an optical coupler.

REFERENCES:
patent: 4203006 (1980-05-01), Mascia
patent: 4592069 (1986-05-01), Redding

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