| 摘要 |
PURPOSE:To suppress the using time of a telephone line and to improve the collection efficiency of data or the like from a mobile station by using a sound/ data signal which is not squelch controlled from the receiving mobile station for a signal transmitted through a the line to a remote place from a repeater station. CONSTITUTION:When the ratio control equipment 1a of the repeater station 1 receives the radio wave of the sound/data inssued from the radio control equipment 2a of the mobile station, the received sound/data signal which is not squelch controlled is transmitted to the telephone lines 4, 5 without the addition of a bit synchronizing signal or the like through a main controller 3. Then, it is demodulated in a data modulating circuit 9 through the sub- controller 7 of a central control station 6, collected as the data of the mobile station 2 in a signal processor 10 and a sound signal is converted into a sound in a speaker device 8 through a switching device 7c. When the data from the plural mobile stations is collected and processed in a polling system in the signal processor 10, one data length is shortened, the transmission time of the telephone lines 4, 5 is shortened, a processing efficiency is improved and when the many mobile stations are present, the collection efficiency is improved.
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