Cordless key telephone system having zone switching function

Details Cordless key telephone system having zone switching function Cordless key telephone system having zone switching function

H - Electricity

04

M

H04M 1/00 (2006.01) H04Q 7/26 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2051086

In a cordless key telephone system for servicing separate service zones (31, 32), a cordless station (5) establishes a two-way radio channel with an access unit (4) of the service zone in which it is located, and constantly monitors the field intensity of the established channel and transmits a zone switching signal when the field intensity is below a specified level as an indication that the cordless station is leaving a first zone (31) and entering a second zone (32). A main controller (2) establishes a switched connection between exchange lines (6) and the access units (4). In response to the zone switching signal from a given cordless station via the access unit of the first zone, the main controller holds an exchange line (6i) that is connected to the access unit (4j) of the first zone through a first switched connection, and establishes a second switched connection between the exchange line (6i) and the access unit (4j) of the second zone, instead of the first switched connection.

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