Radio communication system having a base unit control for establ

Details Radio communication system having a base unit control for establ Radio communication system having a base unit control for establ

1995-06-05

1997-01-07

Bost, Dwayne D.

Telephonic communications

Multi-line or key substation system with selective switching...

With special service

379 61, H04Q 738

Patent

active

055925340

ABSTRACT:
A radio telephone system which includes a plurality of stationary base units connected to wire lines, a plurality of portable or mobile units to be coupled through spatial radio circuits to the plurality of base units, and a method of controlling the system. In the radio telephone system, users of the respective mobile units can know the busy states of the associated wire lines. When the base unit cannot accept a calling request issued from the associated mobile unit due to the busy state of the base unit, the base unit transmits to the mobile unit a data indicative of the busy state of the associated wire line to display an indication that the base unit is busy at the mobile unit.

REFERENCES:
patent: 4737978 (1988-04-01), Burke et al.
patent: 4768218 (1988-08-01), Yorita
patent: 4833702 (1989-05-01), Shitara et al.
patent: 4878238 (1989-10-01), Rash et al.
patent: 4884294 (1989-11-01), Inagami
patent: 4953198 (1990-08-01), Daly et al.
patent: 4977589 (1990-12-01), Johnson et al.

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