| 摘要 |
PURPOSE:To surely select a channel obtaining high communication quality between combined base unit and hand set when a channel not be used for radio communication is made existent by a noise caused by respectively peculiar factors or the like in the case of combining plural kinds of slave sets with master set. CONSTITUTION:A slave set B and a master set A to be connected by selecting plural radio channels at a radio line are respectively provided with a slave set inhibited channel number storage part 13 for storing inhibited channel numbers not to be used for the radio communication and a master set inhibited channel number storage part 6. The inhibited channel number is transmitted from a radio connection part 11 of the slave set B to the master set A. The master set A compares the inhibited channel number transmitted from the slave set B with the inhibited channel number of the master set A and stored it in the master set inhibited channel number storage part 6. When starting the radio communication, it is controlled by a master set control part 1 so as not to select the inhibited channel number matched at the bas eunit inhibited channel number storage part 6. |
