| 摘要 |
PURPOSE:To provide a multi-channel line connection system capable of simultaneously calling all other terminal equipments from one radio terminal equipment in any states. CONSTITUTION:When one radio terminal equipment 2 transmits a simultaneous calling request signal 2A to all the other terminal equipments 3-7 to a repeater 1, the repeater 1 transmits a simultaneous request signal 2B to all the terminal equipments and lets all the lines during relay at present complete communication. Then, after a free speech channel is retrieved and secured from plural speech channels, all the terminal equipments are informed of the retrieved free channel through a control channel, by a simultaneous signal 2C. By relaying the free speech channel, the communication mutually between the terminal equipment 2 and all the other terminal equipments 3-7 is enabled through the free speech channel.
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