Before upgrading our Office Communications Server 2007 (OCS) install to OCS R2, we pushed out the Office Communicator 2007 R2 client to our desktops. As with most software pushes, not everyone received the client successfully. Currently, there are four versions of the Communicator client connected to our R2 server: UCCAPI/2.0.6362.15 UCCAPI/3.5.6907.0 OC/3.5.6907.0 (Microsoft Office Communicator 2007 R2) UCCAPI/3.5.6907.9 OC/3.5.6907.9 (Microsoft Office Communicator 2007 R2) UCCP/2.0.6362.0 OC/2.0.6362.0 (Microsoft Office Communicator) The only one I couldn’t really figure out was the first one (2.0.6362.15). That client version only has one connection to the server. After looking at the rtc (dbo.Resource table) and rtcdyn (dbo.Endpoint table) databases, I discovered that it is the…