| 摘要 |
PURPOSE:To perform transmission/reception by a slave set by originating a call through the radio channel of a master set and to effectively utilize a cellular telephone circuit by the slave set by utilizing the cellular telephone communication function of the master set by providing a line switching part for connecting and switching voice signals to a radio part for a portable telephone and the radio part for a cordless telephone. CONSTITUTION:An incoming call from the cellular telephone circuit is detected through the radio part 1 for the portable telephone at a signal processing part 2 and informed of a control part 4, whether it is to be connected to the voice processing part 3 of the master set or to be connected through the radio part 10 for the cordless telephone to an external cordless telephone slave set is discriminated and the line switching part 9 is switched. The incoming call from the slave set is detected through the radio part 10 for the cordless telephone at the signal processing part 2 and informed of the control part 4, whether it is to be connected to the voice processing part 3 of the master set, to be connected through the radio part 10 for the cordless telephone to the other slave set or to be connected through the radio part 1 for the portable telephone to the cellular telephone circuit is discriminated and the line switching part 9 is switched. |
