Shut the system down, and disconnect from the wall for five minutes, then replug in.
copy and paste what U have on the screen if that doesn't fix it.
I take it U don't have maintenance?
Da-vi'do Juan-is'imo
P.S. For the best response to a question, read FAQ222-2244. Also give the type & version of your voice mail & pbx & preview your post to make sure it is complete & understandable. Please answer all questions so that I may have the info to assist you. Leaving a post on how you fixed the problem will also be appreciated.