CORDLESS TELEPHONE DEVICE

摘要

PURPOSE:To prevent the influence of an interference radio wave from a sur rounding equipment and to expand the place where the device can be installed by changing control channels by a master equipment at need and automatically changing the control channel of a slave equipment matching the master equip ment. CONSTITUTION:If there is an interference such as noise generation under the influence of the surrounding electric equipment after initialization by the master equipment 1, the control channel is changed by pressing a key 18. A CPU 5 changes and sets the control channel to a specific channel once detecting the depression of the key, and send alteration data to the slave equipment 30 through a radio transmission/reception part 27 and then performs another telephone set processes. The slave equipment 30 sends the channel alteration data from the master equipment 1 to a CPU 34 through a radio transmission/ reception part 31 to confirm and change the control channel, and then performs another specific processes. Consequently, the control channels are used distinctively according to the influence of the noise from the surrounding equipment to expand the installation place of the cordless telephone device.