I have one unity 5 server connected to Exchange Cluster 2007
We recently purchased 2 new servers with Unity 7 .
What is best way to upgrade from old server runnign Unity 5 to Unity 7.
I need not only to install new Unity Servers but transfer data from old server
New servers with Unity 7 has to be configured in failover mode ?
Does Unity 7 have different Menu set for subscribers and general greeting menu /default call routing ?
Any advises ?