Fast redial system for a telephone

Details Fast redial system for a telephone Fast redial system for a telephone

1991-01-04

1993-09-07

Dwyer, James L.

Telephonic communications

Supervisory or control line signaling

Substation originated

379 58, 379355, 379359, H04M 1272

Patent

active

052436462

ABSTRACT:
The present invention is directed to a telephone unit having a redial capability wherein if the number called is busy and a redialing is desirable, a determination is made as to whether a dialing operation has taken place since the telephone was placed in an "off" hook status. If no dialing operation has taken place, then the telephone will dial the desired redial number which is the last dialed telephone number. If the determination is that a dialing operation has taken place since the phone was placed in an "off" hook status, then an operation is initiated upon initiating the redial order command where the telephone is electronically placed in an "on" hook status in order to release the telephone line of the telephone network, and then is reestablished in an "off" hook status for capturing a line of the telephone network. Upon capturing a line of the telephone network, the redial system redials the desired telephone number.

REFERENCES:
patent: 3792203 (1974-02-01), Martin
patent: 4508939 (1985-04-01), Lawson et al.
patent: 4581488 (1986-04-01), Lawson et al.
patent: 4602128 (1986-07-01), Freundlich
patent: 4741029 (1988-04-01), Hase et al.
patent: 4887294 (1989-12-01), Ruey-Guang
patent: 4930155 (1990-05-01), Kurokawa

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