What is the process of converting from VM Only to Unified Messaging? Can this be done in a staged approach? Since the server will need to be part of the corporate domain, im guessing that it will have to lose its own domain controller status which in turn will break exchange. I'm hoping there is a way to accomplish this in a way which allows people to maintain their existing messages and doesnt require a complete rebuild of unity.
Has anyone done this in the past, if so can you shed some light on the process? The current unity version is 5, but we are upgrading to 7.