Which model do you have? Is it the Message light that is blinking?
If you don't have yours, you can download owners manuals from the Uniden website.
The phone company may be sending a signal that their voice recorder has a message for you (even if you didn't know you had that service).

Ihave dect2185 series and the light continues to blink.

Many phones have an indicator for the telephone company's voice mail (which is different than the answering machine that's part of the phone). Usually a odd dial tone is another indicator of a waiting voice mail.

To reset the VM indicator, read page 15 of the manual.

Here is a link that might be useful: Uniden Phone

Thankyou so much mike kaiser It worked like a charm.

your light is blinking because you have voice mail or the voice mail box is full....

How to you emty the voice mail.I'm old and don't follow directions too good.