I have been looking to replace our ancient Repartee Voicemail that is connected to our Iwatsu system. Has anyone connected Iwatsu to Microsoft Exchange 2010 for Unified Messaging? We have been looking at hooking up Exchange 2010 UM for voicemail and use a media gateway between the Iwatsu and Exchange server.

I would like to get away from Iwatsu as much as possible but I fear that we are stuck with them since we have about 400 phones tied to that system.