I seem to have a similar issue. I have a multifunction printer/fax machine that's hooked up to the second port on my PAP2T. Every half hour to an hour, the entire LCD screen on the front of the printer lights up, as it does whenever the phone goes off hook. I can't tell what's causing it, but it didn't happen with my old VoIP provider. How can I tell if my adapter is resetting, as described here?