Ok, this is what I tried, have a VOIP device called NetTalk hooked it up to my laptop on a wifi network, then plugged my Comrex Bluebox into the NetTalk box, dialed out and slowed the Bluebox connection rate to 12K actually seemed to work---no phones lines just wifi. In the directions of the NETTALK under fax capability it stated something like--we give it out best shot, so it certainly isn't designed for this. The NETTALK gizmo itself is actually pretty interesting, unlike Magic J doesn't need a computer to use it, only needs to plug it in to a router. It won't replace a POTS line but in an emergency might actually work.