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) If this is a cordless system, that model should be printed on a sticker on the bottom or back of the MAIN base and START with a letter or two, and then a few numbers.
2) What phone service provider (phone company) you have for this phone line?
3) WHERE are you seeing or hearing the "notice of a message" and what is the EXACT wording of this notice?
Please REPLY using the box below.
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)