Office Communications Server 2007 R2 includes several logging and diagnostics tools that can help troubleshoot an Office Communications Server deployment. The tools include:

Office Communications Server also includes ms-diagnostics headers that are error code extensions that solve the need for more granular SIP error codes to communicate diagnostic information through a new ms-diagnostics header. There are two purposes of these error code extensions:

The error IDs and reason values for ms-diagnostic headers are documented in the “Appendix A: Diagnostics Header Error ID and Reason Values” section of the [MS-OCER]: Client Error Reporting Protocol Specification at .