While this doesn't answer your question, what additional fees are tacked on your CallVantage monthly bill? The $235 for VOIPo would be all-inclusive, approximately $5/yr less than CallVantage for 12 months at $19.99/mo. That $19.99/mo, however, does not include any below-the-line taxes or fees, such as E911 charge, AT&T's $0.99 junk fee, or local taxes.

I'm not trying to push you in any direction, just wanting to be sure you compare apples to apples. (I'm also a very happy CV user and am disappointed that AT&T is allowing it to die on the vine. )