This is going to be my new Land line solution. I already owned one of these for a couple of years with its own quirky problems, but they do update the software frequently and I am going to give it another go. I have an extra cell phone from my VZW business account that I do not use, but ends up cheaper to have 5 phones then 4 so my 5th phone may have found a purpose?

http://www.myxlink.com/index.aspx