http://blogs.technet.com/jitreddy/archive/2008/07/31/archiving-cdr-reporter-tool-and-custom-sql-queries.aspxThere is an interesting and quite useful tool called Archiving CDR Reporter tool that comes with OCS 2007 resource kit. The Microsoft Office Communications Server Archiving CDR Reporter tool can be used to collect variety of usage reports based on theen-USCommunityServer 2.1 SP1 (Build: 61025.2)