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[This is pre-release documentation and subject to change in future releases. This topic's current status is: Milestone-Ready]

Topic Last Modified: 2010-07-18

Verify that the infrastructure in which you intend to deploy Enterprise Voice meets the following software prerequisites:

• Microsoft Communications Server 2010 Standard Edition or Enterprise Edition is installed and operational on your network.
  
  
• All Edge Servers are deployed and operational in your perimeter network, including Access Edge Server, A/V Edge Server, Web Conferencing Edge Server, and a reverse proxy.
  
  
• Either Microsoft Exchange Server 2007 Service Pack 3 (SP3) or Microsoft Exchange Server 2010 is required for integrating Exchange Unified Messaging with Office Communications Server and to provide rich notifications and call log information to the client endpoints.
  
  
• One or more users have been created and enabled for Communications Server.
  
  
• Communications Server clients and devices have been successfully deployed.
  
  
• Each computer on which you install Mediation Server must be:
  
  
  • A member server of a domain, and prepared for Active Directory Domain Services (AD DS).
    
    
  • Running one of the following operating systems:
    
    
    • Windows Server 2008 R2 Standard
      
      
    • Windows Server 2008 R2 Enterprise
      
      
    • Windows Server 2008 R2 Datacenter
      
      
    • Windows Server 2008 Standard with Service Pack 2
      
      
    • Windows Server 2008 Enterprise with Service Pack 2
      
      
• Communications Server Topology Builder is installed on a server on your network.
  
  

Next Steps: Verify Security and Configuration Prerequisites