said by hhhhhhhh :

People don't still realize that if the power is suddenly lost, then there is no phone service and still some of these VoIP providers don't provide 911 and portion of those who do, might have problems rerouting your calls. These big cable companies should have known better when they started offering VoIP services about the downside of the service. They should had think about a power based voip services. Something similar of what Covad is about to offer soon: power-line VoIP meaning no equipment needed, just hook directly to phone jack and can work even if power goes out.