Cordless telephone system

Details Cordless telephone system Cordless telephone system

1987-05-18

1988-05-10

Lev, Robert

Telephonic communications

Audio message storage, retrieval, or synthesis

379 58, 379 63, H04Q 704

Patent

active

047441011

ABSTRACT:
A cordless telephone system constituted by a switching station connected to a cable telephone exchanger and at least one telephone set connected to the switching station via a plurality of radio channels. The switching station has a controller which scans the radio channels and selects a nonused radio channel in response to a calling signal from the telephone exchanger, a signal generator for calling a telephone set, a signal detector for detecting a response signal from the telephone set, and a transmitter. The controller changes the number of radio channels to be scanned in accordance with the frequency of use of the radio channels and the transmitter sends a signal representing a changed number of radio channels. Each telephone set has a controller for scanning the radio channels, a signal detector for detecting the calling signal and the signal representing the number of channels from the switching station, and a transmitter for sending a response signal to the switching station.

REFERENCES:
patent: 3913017 (1975-10-01), Imaseki
patent: 4400585 (1983-08-01), Kaman et al.
patent: 4427980 (1984-01-01), Fennell et al.
patent: 4434506 (1984-02-01), Fujiuara et al.
patent: 4471352 (1984-09-01), Soulliard et al.
patent: 4534061 (1985-08-01), Ulug
patent: 4628152 (1986-10-01), kerberg
patent: 4633509 (1986-12-01), Scheinert
patent: 4672657 (1987-06-01), Dershowitz

Affiliated with

Also associated with

Rating

Cordless telephone system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cordless telephone system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cordless telephone system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1326069