I have one user who's Message waiting light will not come on. I have MWA in cls. The user had a 2616, switched it out with another brand new 2616, nothing. Switched to a 3903 and still no light. What else would keep the light from not coming on? I have Call Pilot 3.0, and the MARP number is on key 0 along with the mailbox extension on key 0. Message Waiting DN in CP is on Key 0. I cannot figure this one out.