1-2 of 2 Answers
I bought the extra handset and all I had to do was to set it on the Base Unit for the new 3 handset system for a few moments. It connected fine and works in perfect coordination with the 3 set unit. Hope that helps.
Sorry, there was a problem. Please try again later.Not sure email at&t customer service support
Sorry, there was a problem. Please try again later.
