Help! I am trying to program a Merlin Legend system to be able to use a door phone. The processor is an R3 R7 V12. I have programmed port 48 and 49 on a 016 ETR to "Hotline" and T/R. I plugged the door phone to port 48, and port 49 is going to a 408GS/LSID-MLX on port 804. The only thing I can't...
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