White Paper Abstract:
The task list and procedures in this document describe the process for upgrading the Cisco Unity software from version 4.x to Cisco Unity 5.0(1) with minimal interruption to voice mail (known as a rolling upgrade). The rolling upgrade has the following requirements: (a) Cisco Unity must be configured for failover. (b) Cisco Unity must be version 4.x. Using the rolling upgrade process for earlier versions of Cisco Unity is not supported. (c) Microsoft Exchange Server must be the message store. Using the rolling upgrade process when IBM Lotus Domino is the message store is not supported.