Mikepier wrote:
Update: now the old modem, the one that worked for a while, stopped
working.
Then I remebered that theAlpath cable goes through a machine room
with these huge commercial lights ( like the kind you see lighting
Home Depot, Lowes that take a while to turn on). I shut off the
lights and both modems work now. So the fact that the phone cable
running close to these lights had something to do with it.

Can you hang a stick of EMT in the area of the lights, and run the cable
through that? Or maybe reroute the cable? Looks like your original hunch
was right, it was just the wrong suspect causing the interference. If
the lights are on the same mains power transformer can as the modems,
the interference could be coming through on the power side, as well. I
get static on all my am radios that use wall power when neighbor turns
on his damn security light.

aem sends....