The current environment is running a cluster of CM 4.2(3) with a Unity 5.0(1). We have another brand new cluster of 6.1(1) configured the same as the cluster of CM 4.2(3). We had unplugged from the network the cluster of CM 4.2(3) and Unity and tested all the functionality of the new cluster CM 6.1(1) except the integration with Unity since we only have one box and planning to keep it in that hardware (was upgraded recently).

We already configured in the new cluster of CM 6.1(1) all the Unity integration information the same way is currently configured in the cluster of CM 4.2(3): MWI, Voice-Mail Pilot, Voice-Mail Ports, Line Groups and assigned the Voice-Mail profiles on the DN.

Next step will be to shutdown the cluster of CM 4.2(3), bring up the new cluster of CM 6.1(1) and change the configuration on the Unity 5.0(1) box to point to the new cluster. Everything else on the Unity box will stay the same (exchange server, subscribers, etc)

Should I run the Configuration Assistant (Cisco Unity Telephony Integration Manager) for the previous step or should I make the changes manually?

Any tips/problems on this last step? Any documents pointing to the specific scenario

above (change the Unity from integration with one CM to another)? Any tools?

Any comments, suggestions or hints will be gladly appreciated.