Useful OCS 2007 R2 information
There is lots of info out there about OCS 2007 R2 so I thought I would list a few sites here:
An overview of some of the key features:
http://www.shudnow.net/2008/10/14/ocs-r2-information/
An install guide:
http://www.shudnow.net/2009/01/05/office-communications-server-2007-r2-enterprise-deployment-part-1/
Another tips and tricks series about install
http://blogs.technet.com/toml/archive/2009/01/05/ocs-2007-r2-add-enterprise-edition-server.aspx
On a slightly different subject here is a bunch of info from Joe Calev about how/where OCS stores it’s config information either in SQL, AD or WMI
http://blogs.msdn.com/jcalev/archive/2008/01/04/where-ocs-finds-data-for-wmi-classes.aspx
Further information about all the WMI classes where OCS stores information:
http://msdn.microsoft.com/en-us/library/bb632112.aspx