When you upgrade an existing Unified Messaging server to Exchange 2010 SP2, there are specific steps you must follow to replace the Exchange 2010 RTM or SP1 UM language packs that are installed on the server with the Exchange 2010 SP2 version of the UM language packs.

To upgrade the UM servers to use UM language packs for Exchange 2010 SP2, follow these steps:

Step 1   Install the prerequisites on the UM servers that you'll be upgrading to SP1. For more information, see Install or Upgrade to Exchange 2010 SP2 Unified Messaging.

Step 2   Determine which RTM or SP1 UM language packs are installed on each UM server that you'll be upgrading. To see which languages are available or installed, use one of the following commands:

• For a list of all available languages per UM dial plan, run:
  
  

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  Get-UMDialPlan identity MyUMDialPlan |FormatList

• For a list of all available UM languages installed on a single UM server, run:
  
  

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  Get-UMServer -identity MyUMServer |FormatList

Step 3   Remove all RTM or SP1 UM language packs from the UM servers that you'll be upgrading. For more information, see Remove a Unified Messaging Language Pack from a UM Server.

Step 4   Download Exchange Server 2010 SP2. For more information, see Download SP2 for Exchange Server 2010.

Step 5   Install Exchange 2010 SP2 on the UM servers that you're upgrading. For more information, see Upgrade Exchange 2010 to Exchange 2010 SP1, SP2 or Exchange 2010 SP3.

Step 6   Download Exchange 2010 SP2 UM language packs that you need. For more information, see Exchange Server 2010 UM Language Packs for SP2. You'll have to download the SP2 version of each RTM or SP1 UM language pack that was installed on the UM servers.

Step 7   Install the Exchange 2010 SP2 UM language packs that you downloaded. For more information, see Install a Unified Messaging Language Pack on a UM Server.

Important:

To ensure that all Unified Messaging features are available in the UM language packs you install, install the Exchange 2010 Client and Server Language Pack on each UM server in the dial plan. If you don’t install the Client and Server Language Pack, some features may not work as expected. Some features, for example, Voice Mail Preview, will work in a specific language when only the UM language pack is installed. However, features such as Outlook Voice Access and user interface text won’t work in a specific language without having both the UM language pack and the Client and Server Language Pack installed. The language pack bundle for Exchange Server 2010 Service Pack 2 (SP2) is integrated into the download for Exchange 2010 SP2. To download SP2 for Exchange 2010, see Microsoft Exchange Server 2010 Service Pack 2 (SP2). However, the language pack bundle for Exchange 2010 SP1 is still available. To download and install the additional Exchange 2010 SP1 client and server language packs on servers in your organization, see the Microsoft Exchange Server 2010 SP1 Language Pack Bundle.