| 摘要 |
PROBLEM TO BE SOLVED: To provide a cordless telephone device capable of demodulating voice signals precisely with selection of a favorable P channel among M channel as for use. SOLUTION: A slave unit controller 100 comprises a RSSI measurement means 12 measuring the RSSI of the selected channel, a storage means 13 storing the measured RSSI and the channel number, a decision means 14 deciding whether the selected channel is a defective channel or not, a notifying means 15 notifying the defective channel number and the RSSI to a master unit, and a channel switching means 16. A master unit controller 200 comprises a storage means 34 storing the defective channel number and the RSSI, a defective channel number calculating means 33 calculating the whole numbers of the defective channels, a decision means 31 deciding which channel is used as for use a new defective channel or the stored defective channel, and a notifying means 32 requesting a exchange for the defective channel to the slave unit. |
