Method and system for controlling radio channels to be used...

Details Method and system for controlling radio channels to be used... Method and system for controlling radio channels to be used...

H - Electricity

04

M

379/11

H04M 1/00 (2006.01) H04B 7/26 (2006.01)

Patent

CA 2036754

In a key telephone system, a plurality of cordless telephone systems each including a pair of a connecting equipment 4 or 6 and a movable telephone set 5 or 7 are connected to a key service unit 3 as extension telephone sets. The key service unit 3 designates each speech channel of mutually different frequency selected from a plurality of predetermined speech channels as each speech channels to be used for each cordless telephone system, and indicates each designated speech channel to the connecting equipment 4 or 6 of each cordless telephone system. In each cordless telephone system, each designated speech channel is indicated from the connecting equipment 4 or 6 to the movable telephone set 5 or 7 using a predetermined control channel. After each designated speech channel has been indicated to each movable telephone set 5 or 7, the designated speech channel is mainly used for each cordless telephone system. Since the frequency of each designated speech channel for each cordless telephone system is different from each other, it is possible to simultaneously process outgoing or incoming calls of the plural cordless telephone systems.

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