Multi-line controller

Details Multi-line controller Multi-line controller

1981-11-02

1983-07-26

Schreyer, Stafford D.

179 1C, H04M 100

Patent

active

043955967

ABSTRACT:
A multi-line controller device which provides lamp control and ringing control for single line telephone accessory equipment when connected to a multi-line telephone system. Control is selectively provided for any incoming line of the multi-line system through a combination of a multi-position switch and an opto-coupler device.

REFERENCES:
patent: 3757056 (1973-09-01), Foulkes
patent: 4351987 (1982-09-01), Feil

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