My handset reads "out of range"

Hi, I know its a few days later than I wanted to respond, but now I am. I try your method, but I went back to the formula I mentioned in my problem, and I had missed one whole step. So I started over and followed the formula exactly, (which was to remove the battery completely from the handset). I skipped over that completely the first couple of times, but when I did it, it worked like a charm. But thank you, because it was the "buy a new battery" suggestion that gave me the idea to try my formula again.