Hello & Welcome to Just Answer,
I'm Greg and will do my best to assist you today.
Sorry to hear of any issue you are having with your phones.
To help you with this issue, may I ask:
1) How many TOTAL cordless handsets do you have with this system, and of MORE than ONE, do ALL handsets have this same issue?
2) What phone service provider (phone company) you have for this phone line?
3) Do you have ANY OTHER "Caller ID" phones (NOT part of the AT&T system) attached to this same phone line and if so, are they working properly (show the Caller ID)?
OK - caller ID issues are USUALLY traced back to either "signal problem" or service provider problems - where the correct signals are not making it to the base unit of the phone system.
So may I ask if you have had ANY "signal issues" recently - such as "noise" on the line, or something similar?
I see it has been a few days and I haven't seen a response on this page, so 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)