7510 Voicemail Indication

[schneism]

I have a problem with a user that has a 7510. They don't get any notification that they have a voicemail waiting. They don't get the pop-up (New Voicemail Waiting) or the small telephone icon in the upper left corner. The only indication is another email that syas "missed call". I have worked with Nextel support for 2 days now and gone to 2nd and 3rd level support with no success.

Does anyone have any suggestions about what I can check. I have a 7510 where is all works fine. I haven't seen anything different between the 2.

Please Help