(This article studies and designs a new mine mobile communication system, which uses Wi-Fi technology in the underground, takes the optical fiber wired network as the backbone and the wireless network as the extension. The network covers the underground roadway, and the mine intrinsically safe mobile phone (mobile communication terminal) is used to terminate functions such as group calls, and then terminate the voice dispatch from the mine to the underground and the two-way communication of data and voice from the underground to the mine.)
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