I just got E* installed yesterday and managed to get it to dial out via Free World Dialup...
FWD | Home . I have my 622 hooked up to a Sipura 2000. I can't seem to get it to download billing info or anything else, but it did indeed successfully dial up the 800 number to call home. Not sure whether it registered on their end yet, though.
Really seems silly in this day in age *especially* since the thing has an ethernet port. I understand their reasons, but to be honest, there's *so* many ways around their rules that it seems like an unnecessary inconvenience for those of us without land lines.