Jean wants to dump her AT&T phone service and use VOIP with the internet via Ooma. Leo says she can, but she'll be giving up precise 911 service. So if she has a cell phone, she can call 911. But that will be a regional e911 service, which will slow down response times. Ooma does offer 911 service to her registered address, but she'll have to pay for it, and if the power goes out, she'll lose her phone too. So its a mixed bag.