We have used Ooma for several years and it cost seven dollars per month. It works really well but we are going to use just cell phones from now on. If you are not familiar with Ooma check out their website. Ooma is voice over Internet so you must have an Internet connection. It is easy to set up. If you have a landline phone number now you can continue to use it with Ooma. You can port the number to your Ooma account. Ooma walks you through the steps to do this. I think we paid about $300 for this equipment a few years ago and it has worked perfectly.