This section describes software and hardware requirements for Hosted Office Communications Server 2007.

Servers used in Hosted Office Communications Server 2007 have the following software requirements:

• Windows Server 2003, Standard Edition with Service Pack 2 (SP2)
  
• Office Communications Server 2007, Enterprise Edition
  
• Windows Server 2003 Support Tools
  

In addition, you will install SQL Server 2005 Standard Edition with Service Pack 2 (SP2) on the Office Communication Server 2007 Archiving and CDR Server.

In developing server specifications for Hosted Office Communications Server 2007, you should understand that real-time communication requires high rates of data processing and transmission. Together with Microsoft Consulting Services (MCS) or another IT advisor, you should assess the current hardware on the computers that you want to run Office Communications Server 2007, and, if necessary, upgrade or replace the server computer or its parts.

For more information about system requirements, and additional scalability and performance for Office Communications Server 2007, download and review Office Communications Server 2007 Planning Guide.