Office Communications Server 2007 product home page, found at http://technet.microsoft.com/en-us/office/bb267356.aspx

Office Communications Server 2007 system requirements, found at http://www.microsoft.com/technet/prodtechnol/office/communicationsserver/evaluate/sysreqs/default.mspx

Office Communications Server 2007 Release Notes, found at http://www.microsoft.com/downloads/details.aspx?familyid=011d0448-3a8b-47e1-a469-32bedf9d21bd&displaylang=en

Office Communications Server 2007 Technical Library, found at http://technet.microsoft.com/en-us/library/bb676082.aspx

Office Communications Server 2007 Documentation, found at http://technet.microsoft.com/en-us/library/bb676082.aspx

Office Communications Server 2007 free evaluation download, found at http://technet.microsoft.com/en-us/evalcenter/bb684921.aspx

Unified Communications Group Team Blog, found on Microsoft TechNet at http://blogs.technet.com/uc/