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US 4,682,351 AGranted
Cordless Telephone system
AssigneeNEC Corporation
InventorMasayuki Makino
Life of this patent
Estimating the term…
Abstract
A cordless telephone system which is capable of connecting a plurality of mobile stations to a single base station over a radio link is disclosed. The mobile stations are classified into a master and slaves. While the master mobile station is capable of originating and receiving a telephone call, the other or slave mobile stations are only capable of receiving a telephone call.
Claims6
A cordless telephone system including a single base station and a plurality of mobile stations which are connectable to the base station over a radio link:
- said mobile stations each being provided with an identification code which is different from indentification codes assigned to the other mobile stations, said identification code being indicative of a master-slave relationship of said mobile station to the other mobile stations and a particular priority order of said mobile station with respect to reception of a telephone call;
- said base station being constructed to determine whether any of the mobile stations which has originated a telephone call is a master mobile station or a slave mobile station referencing the identification code assigned to said particular mobile station and, if said mobile station is a master station, connect said mobile station to a subscriber's line to allow dial signals to be transmitted and, if said mobile station is a slave station, inhibit transmission of dial signals although connecting the mobile station to the subscriber's line;
- said base station being further constructed to, at the time of reception of a telephone call, transmit control signals sequentially to the mobile stations on a time division basis according to the order of priority;
- whereby the master mobile station is capable of originating and receiving a telephone call, while each of the slave mobile stations is capable of only receiving a telephone call.
1 more element
Dependencies are inferred from the claim text.