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DNS Requirements for Servers

Microsoft Office Communications Server 2007 and Microsoft Office Communications Server 2007 R2 will reach end of support on January 9, 2018. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.

 

Topic Last Modified: 2013-06-26

Office Communications Server 2007 R2 uses Domain Name System (DNS) in the following ways:

  • To discover internal servers or pools for server-to-server communications.

  • To allow clients to discover the Enterprise pool or Standard Edition server used for various SIP transactions.

  • To allow unified communications (UC) devices that are not logged in to discover the Enterprise pool or Standard Edition server running Device Update Service, obtain updates, and send logs.

  • To allow external servers and clients to connect to Edge Servers or the HTTP reverse proxy for instant messaging (IM) or conferencing.

  • To allow external UC devices to connect to Device Update Service through Edge Servers or the HTTP reverse proxy and obtain updates.