I believe you need to change your Port option on the PBX Communications tab to Telnet. Next enter the IP address of the ESI phone system in the Server Name or Address box followed by the Port number in the port box. Next press the Save button.
Once completed make a few test calls and see if any data appears in the Views -> Live -> Raw menu. If data appears here than we are talking to the ESI switch. Next go to the View -> Live -> Calls menu. If data appears here everything is configured properly. If it does not then you are using the wrong driver. If this occurs email your c:\bill\smdrlog.txt file to email@example.com
and they will provide you with the correct driver.