I looked at VOIP and I looked at power outage. Not too long ago went through 13 days of no power (IKE), but I did have phone service (land line) so biz continued, even if I couldn't print invoices at that time. And all I had was dial up IF I COULD GET A LIFT from my neighbor with a gasoline generator for an hour or so each day. Phone worked anyway, no matter what. Think about it.