From my limited exposure to the FIOS it just seems like a large NID that needs to be plugged in. There didn't seem to be any interior wirng needed. It was still copper to the wall jacks that was in place already.
They run wiring from the power supply to the battery box and from there to the ONT.
From my limited exposure to FIOS it appears that they have real grunts installing it. These guys are barely above the dish network installers on the give-a-crap scale.
