Changing the Cisco Unity Configuration from Voice Messaging to Unified Messaging
For an overview of two methods for changing the Cisco Unity configuration from Voice Messaging to Unified Messaging, refer to White Paper: Installing Cisco Unity Voice Messaging in Anticipation of Migrating to Cisco Unity Unified Messaging (Version 3.1) at http://www.cisco.com/univercd/cc/td/doc/product/voice/c_unity/whitpapr/migvm_um.htm.
The same methods can be used for changing the configuration for a Cisco Unity 4.x system.