China 12.5kHz TDMA channel GB Standards Search Result |
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GB/T 34991-2017 12.5kHz TDMA channel based professional digital trunking communication system—Technical specifications for physical layer and data link layer of air interface 基于12.5kHz信道的时分多址(TDMA)专用数字集群通信系统 空中接口物理层及数据链路层技术规范 - 英文版 |
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GB/T 34992-2017 12.5kHz TDMA channel based professional digital trunking communication system—Technical specifications for call control layer of air interface 基于12.5kHz信道的时分多址(TDMA)专用数字集群通信系统 空中接口呼叫控制层技术规范 - 英文版 |
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