Method for controlling a plurality of stationary apparatuses in

Details Method for controlling a plurality of stationary apparatuses in Method for controlling a plurality of stationary apparatuses in

1989-07-17

1992-02-04

Dwyer, James L.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 63, H04M 1100

Patent

active

050864513

ABSTRACT:
Disclosed is a radio channel control method for a system including a main apparatus connected to a telephone line and having a channel control function, a plurality of stationary apparatuses connected to the main apparatus and each having a radio transmitter/receiver, and a portable telephone capable of communicating with the stationary apparatuses through a radio channel. In this method, the main apparatus designates each stationary apparatus in a main or sub state to control communication with the portable telephone and monitors a state signal including information of the main or sub state transmitted from each stationary apparatus. When the state signal from a given stationary apparatus does not coincide with a state of the given stationary apparatus designated by the main apparatus, the main apparatus transmits a state designation signal to the given stationary apparatus to coincide with the state designated by the main apparatus.

REFERENCES:
patent: 4656653 (1987-04-01), Oda
patent: 4807259 (1989-02-01), Yamanaka et al.
patent: 4856047 (1989-08-01), Saunders
patent: 4939785 (1990-07-01), Murata et al.

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