DNS and Communicator Phone Edition
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.
These topics summarize the order for DNS records that Communicator Phone Edition will process in order to locate Office Communications Server 2007 R2.