Simply put, the cellular line gives me unlimited domestic calling for about the same price as a home phone line. I also have a good reception at home, so there is no concern with that. With that being said, there is no need for a home telephone line. In addition, if I should need a “home” phone, I will acquire a telephone number from my SIP provider, and use the SIP client on my cellular phone. If that was not an option, I could choose to reactivate my Ooma Service using the same ATA and phones I had when I used Ooma.