I have one Unity 4.04 VMO at one site that is currently handling all our voice-mail. I need to move to a new facility in another state and at the new facility I have a server that I can install Unity 7. The question is can I run both Unity 4 VMO and Unity 7 together and move the users from Unity 4 to Unity 7 and when all users are moved decommission the Unity 4 VMO server?
I see and have asked about upgrading from Unity 4 to Unity 7 but, now I am thinking a phased migration approach since the site will now be in another state. Any comments, suggestions, or document links are appreciated.