We are currently looking to deploy a Cisco based IP Telephony system into our company. Alongside this we are deploying Exchange 2007. We have purchased Cisco Unity 5.1 to use the Unified Messaging features of the Cisco telephony system.
Microsoft told us that Exchange 2007 Enterprise CALs would be required as the Exchange 2007 UM Role must be used to implement UM functions regardless of 3rd party vendors.
Cisco claim that Unity only uses the Information Store and does not require the Exchange 2007 UM Role. Of course MS disagree.
I'm inclined to believe Cisco but we are being audited by MS licensing so we can not afford to be uncomplient.
Does anyone have a Cisco Unity system running with Exchange 2007 and can verify that the Exchange 2007 UM Role was not required?