Automatic redial in a key telephone system having different line

Details Automatic redial in a key telephone system having different line Automatic redial in a key telephone system having different line

1991-06-14

1992-10-06

Schreyer, Stafford D.

Telephonic communications

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

With special service

379209, H04M 126

Patent

active

051539080

ABSTRACT:
The type of an outside line acquired at the time of placing an outside-line call is identified, and an idle outside line of this same type is acquired when a call is placed to a party in an auto-repeat mode, thereby establishing the call to the party. Further, types of outside lines acquired preferentially at the time of originating an outside-line call are registered in advance, and idle outside lines are selected and acquired in accordance with the order of preference.

REFERENCES:
patent: 4958369 (1990-09-01), Tsuchida
patent: 5034948 (1991-07-01), Mizutani et al.

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