Log on to the Enterprise Edition server as a member of the Administrators group.

Start Server.msi by using one of the following two methods:

• Start the Office Communications Server 2007 R2 Deployment Wizard. Under Upgrade from the Evaluation Version, click Install.
  
  
• At a command prompt, change the default folder to the installation folder or the Setup\amd64\setup folder of the installation CD. At the command prompt, type the following command as described in Overview of the Upgrade Process:
  
  

  	Copy Code
  MsiExec.exe /i Server.msi EVALTOFULL=1 [/l*v <Drive:\Directory\FileName.log>] [/q[n|b|r][+]]

  For example:
  
  

  	Copy Code
  MsiExec.exe /i Server.msi EVALTOFULL=1 /l*v C:\Upgrade.log

Follow the instructions in the wizard to complete the upgrade.

Click Finishto exit the wizard.

Repeat steps 1 through 4 for each Enterprise Edition server in the Enterprise pool.