Hello & Welcome to Just Answer,
Sorry I didn't see your question earlier and to hear of the issue you are having with your phones.
To help you with this issue, may I ask:1) When this issue first began?2) How many TOTAL handsets do you have with this system, and if this happens on ALL handsets?3) What phone service provider (phone company) you have for this phone line?4) If you have ANY other devices (phones, fax, alarm system, etc.) attached to this same phone line (not part of the Panasonic 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)