Hello & Welcome to Just Answer,
Sorry to hear of any issue you are having with your phones.
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? That should be printed on the bottom or back of the main base and START with KX-TG.2) How many TOTAL cordless handsets do you already have with this 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)
Thanks for letting me know.
Please let me know if you have any more issues or questions in the future.
Take Care, Greg A.