If you are talking about the Aspect Contact Server technology the server sits on the network and connects to ACD via a Data Interlink (setup in ASMS). Using the various activeX or dll controls you can setup CTI applications and/or call eFlows from CCT's to do data dips, etc. abcon32.ocx you can use for screen-pop applications, dhub32 can be used for realtime stats. The newer contact server versions have .net dll's that you can use. I have used Visual Studio .net winforms for these applications with no issues. You can control telesets, sign-on/off, etc. As far as standards they put examples in VB.