Fixed subscriber unit

Details Fixed subscriber unit Fixed subscriber unit

1998-05-18

2000-07-11

Hunter, Daniel S.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

379413, H04B 138

Patent

active

060885998

ABSTRACT:
A fixed subscriber unit is connected to one or a plurality of wire telephones through wire and to a radio base station, which is connected to a public network, through radio to mediate communication between a telephone, which is connected to the public network, and the wire telephone. The fixed subscriber unit includes a supply state detection unit for detecting an electric power supply state from an external power supply. The fixed subscriber unit further includes a supply control unit for detecting reduction of a voltage supplied from the external power supply and a power failure on the basis of the detected result of the supply state detection unit, and setting a voltage supplied to the wire telephone to a value smaller than a rated voltage when the reduction of the voltage or the power failure is detected. The rated voltage is a voltage supplied to the wire telephone when the voltage supplied from the external power supply is normal.

REFERENCES:
patent: 4984267 (1991-01-01), Martinez
patent: 5469282 (1995-11-01), Ishioka
patent: 5734711 (1998-03-01), Kleffner
patent: 5946617 (1999-08-01), Portaro et al.

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