| 摘要 |
PURPOSE:To prevent the crosstalk of a central station in advance, by relaying a terminal station call signal from the central station at a relay station, transmitting the signal to each channel, discriminating to which channel the call signal corresponds, and selecting the channel only connected with the terminal station to be called. CONSTITUTION:The central station 1 and a relay station 2 are connected with a channel 4 and a plurality of terminal stations 3 are connected to the relay station 2 with a channel 5. A channel distribution circuit 21 of the relay station 2 transmits the station number of the terminal station 3 transmitted by the central station 1 to each channel 5, a station number reception circuit 22 discriminates the station number and controls a channel selection circuit 23. The channel 5 corresponding to the station number discriminated at reception circuit 22, the terminal station 3 only connected to the channel 5 is selected, allowing to prevent the crosstalk at the central station 1 in advance. |
