http://blogs.technet.com/jkruse/archive/2007/01/23/uc-webcasts.aspxHere are two great webcasts on integrating LCS 2005 and Exchange 2007 with your existing telephony infrastructure... Enhancing Messaging with Real-Time Communications Messaging and calendaring are important, but sometimes what you need is instantaneous,en-USCommunityServer 2.1 SP1 (Build: 61025.2)