Topic Last Modified: 2011-05-02

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

Microsoft Lync 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 Edge Servers running Access Edge service, A/V Edge service, Web Conferencing Edge service, 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 Lync Server 2010 and to provide rich notifications and call log information to the client endpoints.
One or more users have been created and enabled for Lync Server.
Lync 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
  - Windows Server 2008 Datacenter with Service Pack 2
Topology Builder is installed on a server on your network.

Next Steps: Verify Security and Configuration Prerequisites

After verifying software prerequisites for Enterprise Voice, you can use the documentation to continue preparing for deploying Enterprise Voice:

Verify security, user configuration, and hardware perquisites, as described in Security and Configuration Prerequisites for Enterprise Voice.
Install the Mediation Server, as described in Install the Files for Mediation Server, but only if you want to deploy a stand-alone Mediation Server or pool because Mediation Servers are installed as part of the Front End pool or Standard Edition server deployment process when collocated.
Configure trunk connections to provide PSTN connectivity for users, as described in Configuring Trunks and Translation Rules.