I have been using a comdial unisys for years with no problems. Recently we have had a voicemail that gets "stuck" and cannot be accessed. If you listen to the prompts it says that there are new voicemails but you can't listen to them. I have tried adding new voicemails to the extension and the count goes up but we still cannot hear any of the messages. Any idea how to clear this problem? It has happened on two different extensions and eventually goes away on its own but we lose messages and functionality while we wait.

Thx in advance for the help!