I have heard about this service from several friends and they indicate
that it is a really good deal.  They like it a lot better than
Vonage, and say that the web interface for managing your account and
phone number is well done.  I like the fact that it has many of
the features of the older “500” phone service that AT&T used to
offer.

Staples to sell AT&T’s Net phone starter kit. The office supply chain is selling a kit that includes a Linksys router and instructions on how to sign up for CallVantage. [CNET News.com]