If you have access to the VMI programmer, I would connect to the voice mail system and watch a message being recorded to see where it's actually going.

You might try deleting, then re-creating a mailbox to see if that clears the trouble. Barring that, you're probably going to need a vendor visit. Your vendor can then have Iwatsu tech support dial in the system and poke around a bit. They have programming resources that field guys don't have access to.

Sometimes the thoughts in my head get so bored, they go for a stroll through my mouth. This is rarely a good thing.