Hello & Welcome to Just Answer,
I'm Greg & I will be assisting you today.
To help you with this issue, may I ask:1) The Model Number of the MAIN BASE UNIT of the phone system you are working with? I only ask because the KX-TGEA20 model is for a HANDSET only.2) What is it that needs to be set up on the system?
I see it has been a few days and I just wanted to follow up to see if you have any more questions concerning this issue or if the issue was resolved.
I look forward to any further questions or results that you may have.
Thanks, ***** *****--. .-(im)