Originally I had planned on writing a few 'How-To' articles on OCS and SIP Trunks here on my blog, but then the opportunity to do the writing for Microsoft on the same subject came along. I am happy to announce that my first TechNet posting can be found at http://technet.microsoft.com/en-us/ff427414.aspx titled Configuring a Broadvox SIP Trunk in Communications Server 2007 R2.