The SOHO market represents a very large, and really untapped marketplace for VoIP. While I half expected Vonage to come out with an offering, it seems that AT&T beat them to the punch.
The big deal here is the fact that SOHO offices using Centrex based services from their local telco now have a VoIP alternative. This is clearly a market that should drive further adoption to CallVantage for AT&T by cannibalizing the Centrex market.
It should also cut into FXO (foreign exchange) revenues of the telcos and 800 number costs to small businesses which like to have multiple numbers to appear local (i.e. plumbers, electricians and locksmiths) as well as enable them to be directly reachable via Locate me, rather than have an in office assistant relaying calls.
On the surface the new product offering appears to be very well thought out, and leverages the already existing infrastructure AT&T has for VoIP.