We actually have wifi there. But I shy away from VOIP because a power or internet outage (happens from time to time) means no service. That's why it was an old-fashioned landline, which usually works during a power outage. And that's why we are thinking for cellular service because it would probably still work during local internet or power outage. And it NEEDS to be easily accessible. Can't be locked away or hidden... because it's meant to be seen/found/used during an emergency.