Hi there. My name is*****'d be happy to help. I'll need to ask a few questions in order to provide the best possible answer. The KX TGDA20 is a cordless handset that acts an extension phone for needs to be connected to a compatible Panasonic base unit. Pleas let me know what type of base unit you have and I will provide detailed instructions for pairing them.
I'm here. I do apologize for the delay. I am having a few technical difficulties. DO you just have the one phone or do you have both a base phone and an extension phone? An extension phone will not work unless it is properly paired with a functioning base unit.