US 4,544,808 A · Telephone indicator

Abstract

An indicator for use with a multiline telephone, which displays the status of both a local and called telephone set. The status indicator is comprised of a first indicator enclosed within a second for displaying by a shade or color the status of a called line, and a second indicator at least partly surrounding the first for partly displaying the first for displaying by shade or color with the second indicator the status of the calling line, whereby a party observing the indicator obtains simultaneous indication of the status of the calling and the called lines. Preferably the first indicator is a circle, enclosed within the second indicator which is a square, both being elements of a liquid crystal display. Each square indicator can be located next to a line access pushbutton with which it is associated.

Claims29

Dependent claims

Telephone line status indicating means comprising:

a first indicator enclosed within a second indicator for displaying a first shade in response to one status of a telephone line associated with one of a calling and called party and a second shade in response to another status thereof,
the second indicator at least partly surrounding the first indicator for displaying a third shade in response to one status of a telephone line associated with the other of the called and calling party and a fourth shade corresponding to another status of the telephone line associated with said other party,
whereby the calling party obtains simultaneous indication of the status of his and the called party lines.

Dependencies are inferred from the claim text.

Telephone indicator

Life of this patent

Telephone indicator

Life of this patent

Abstract

Claims29