| 摘要 |
PURPOSE:To use a handset for the operation of a radio equipment and an external device while the handset is set onto a cradle. CONSTITUTION:When the user turns on a CSW switch 18, other switch 19 is turned off by an input output control section 17 connecting to an external device 14 to disconnect a telephone control section 8 and a hook switch 12 and a line changeover section 20 disconnects the telephone control section 8 and a radio equipment 4. In this case, when an external device code is inputted to the input output control section 17 via a key entry section 6 and the telephone control section 8, a handset 3A uses to control the external device 14, and when the telephone code is inputted, a line changeover section 20 connects the telephone control section 8 and the radio equipment 4, the handset 3A is used to control the radio equipment 4 and the both are disconnected after the end of the operation of the radio equipment 4. |
