The XCAPI has its own functions for testing, tracing and analyzing problems with the connection to the telephone system / gateway and establishing the connection characteristics.
First, make sure that:
§The VMWare is configured according to the specifications
§The PBX / Gateway is set up according to the recommendations
You can open the "XCAPI Configuration" and the "XCAPI Test Tool" in the ixi-UMS Business Configuration under Hardware or from the Start menu.