Used OOMA for several years before going on the road. Just fabulous. Free (at that time) nationwide service with great call quality. I still have the 6-year-old unit which I hope to put right back in service when we dry-dock. You can even configure your connection to the phone company so that whatever jack you plug a regular phone into, the call will go out via Ooma. In a few parks where we've been, the internet service has been good but our cell phones couldn't connect to anything. So I broke out the ooma, in our RV, and used it! Now, don't bank on doing this often; most parks' wifi don't provide consistent high-bandwidth service to make this work. And, cell phones work adequately most of the time as well. It was just fun to see Ooma right back in the game.