I'll remove the "Resolved" tag then

You need to be very systematic, or you will never get anywhere in identifying the cause. Networking issues like this are always a long drawn out process, so you really will need some patience.

Is it possible to plug the MagicJack in via USB, and replace the router? In other words, to leave things set up so that the MagicJack is not connected directly to the router. I think I may just possibly have an idea what could be going on here.