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Migration Process

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.

Migration from Office Communications Server 2007 to Office Communications Server 2007 R2 follows this sequence:

These phases are described in more detail in the following sections.

Important

This sequence is designed to minimize coexistence issues during migration. Implementing Office Communications Server 2007 R2 release in a different sequence is not supported.