Cordless telephone system

Details Cordless telephone system Cordless telephone system

1987-04-27

1989-02-14

Ng, Jin F.

Telephonic communications

Audio message storage, retrieval, or synthesis

379 63, 455343, H04M 1100, H04B 116

Patent

active

048052035

ABSTRACT:
A cordless telephone system is provided including a base communication unit and portable communication units. The base communication unit is connected to a number of telephone lines, and has the same number of radio transceivers as the telephone lines. Each of the portable communication units is connected to a respective one of the transceivers of the base communication unit by a cordless communication link. In operation, each of the portable communication units is intermittently rendered operative at a particular timing and a predetermined period which are designated by a first signal. The first signal is produced in the base communication unit, and is based on the number of portable communication units turned ON. The particular timing and predetermined period are changed in response to a second signal which is produced in the base communication unit, and which is based on the number of portable communication units turned ON, and on the number of wireless communication units being used.

REFERENCES:
patent: 3692952 (1972-09-01), Leonard
patent: 4656653 (1987-04-01), Oda et al.
patent: 4672658 (1987-06-01), Kavehrad et al.
patent: 4679244 (1987-07-01), Kawasaki et al.
patent: 4682351 (1987-07-01), Makino

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