Use it like a regular phone line connected to wifi and no monthly phone bill. You can pay for one year/3 years or 5 years of service at once for fraction of what you would pay a phone company. You'll have to work that out when you sign up with magic jack. This is the adapter that you need to set up the line. It is very easy to set up and install. I bought this unit for my mom a few years ago but due to Alzheimer's, she no longer can use it.
• Free Local/long distance calling Free calls to Canada and Mexico and to anyone who also owns a magicJack line any where in the world
• Free phone number or keep your number for a small one time fee