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  • 06/01/2021
    1. Scheme introduction of IP telephone emergency broadcast system in tunnel pipe gallery.

    1. Product function 1)Dispatching operation: call, no call, forced insertion, forced disassembly, proxy connection, monitoring, multicast, broadcasting, conference, night service, IP linkage telephone 2)Monitoring function: user status can be indicated by icon color and text: call, ring, call; 3)Call and call: dial up call, call answering, multi line switching; 4)Management functions: system management, group management,… Continue reading 1. Scheme introduction of IP telephone emergency broadcast system in tunnel pipe gallery.

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