I though I make a video on my Nettalk Duo. It’s the best thing I ever purchased and I save $$$. I found this device offers exceptional calls at awesome price. Setup is very simple. It does have E911 different from the landline 911 service. Features that I use are call waiting, call ID just to name a few. Canada, long distance and local calls are free. No monthly bills. But there is a year fee around You will need a good high speed internet connection to use this device.You can also send and receive faxes without issues. No PC required but you can also setup to PC. First, you need to disconnect the outside phone jack before installing this device. Second, register the Nettalk online in order to use it. You will pick a phone # from there. See video for more setup and tips.