Originally Posted by cwozny
We have no idea about how the cables in the walls are wired or if we have appropriate splitters and would not know how to find out that information.
That seems the most critical bit in setting-up a MoCA network, understanding how the coax lines are wired.
Do you know where the coaxial enters the house? (Are you IN a house? Or apartment/condo?) If so, can you trace this line to where it splits-off for the various runs to your individual rooms? This is an especially critical step, as you'll need to install a MoCA PoE filter
on the input port of your main/first splitter, to isolate your network from your cable provider *and* neighbors. (You may also require a MoCA PoE filter on the coax in on your cable modem, if your modem doesn't have MoCA filtering built-in.)
Also, how many rooms do you have coaxial runs to? Ideally, you could trace/identify each of these runs simply by disconnecting outputs from the main splitter and seeing if a given room loses its connection. If two or more rooms lose their cable signal when you disconnect a single output on the main splitter, you likely have another splitter on the line you'll need to track down.
All that said, a rudimentary test to verify you have functioning MoCA adapters, as suggested by DJHall, might be your best next step.