Hi, as this forum focuses on Windows SteadyState specific issues, this inquiry would best be posted to Office Communication Server forum:
http://social.technet.microsoft.com/Forums/en-US/category/ocs
The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and
other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding.