Key telephone system

Details Key telephone system Key telephone system

1991-08-14

1992-09-29

Schreyer, Stafford D.

Telephonic communications

Multi-line or key substation system with selective switching...

With intercom system

379209, 379355, H04M 1272

Patent

active

051519330

ABSTRACT:
A key telephone system with a re-dialing feature has a memory with two memory areas. One of the two memory areas is provided for an outside-line call, and the other is provided for an internal-line call to a particular extension. Each memory area memorizes a dialed number therein and replaces a number of the last intended call, previously present in the memory area, with the most recently dialed number. A re-dialing push-button automatically retrieves the number of a last intended outside-line call, memorized in the outside-line memory area, when actuated following a selection of an outside-line call, or the number of a last intended inside-line call to a particular extension, memorized in the extension memory area, when actuated following a selection of an internal-line call to a particular extension.

REFERENCES:
patent: 5054058 (1991-10-01), Kakizawa

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