| 摘要 |
PURPOSE:To connect a master set connected to plural telephone sets in radio to plural trunk lines by connecting plural radiotelephone sets and connecting devices in radio and using a controller connected to the connecting devices with cables and connected to the plural trunk lines. CONSTITUTION:The radiotelephone system is constituted by the controller 12 connected to the plural trunk lines 11, the plural connecting devices 13 connected to the controller, and plural radiotelephone sets connected respectively to the connecting device via a radio line 14. When an incoming call exists to one of the trunk lines 11, the controller 12 detects a call signal, transmits an incoming signal A to one of the connecting device 13 and transmits an incoming signal B including a connecting device identification number specific to the connecting device as signal infomation to the radiotelephone set side. A radiotelephone set responding to the said sigal by hook-off transmits an incoming response signal C as the specific identification number signal iformation to the connecting device to set the radio line with the connecting device. |
