Use the SYSTEM keyword to launch the DICOM Network Services utility in system configuration mode:
DICOMEX_NET, /SYSTEM
This provides access to the system Configuration tab.
Note: On Windows, you can also select Start > Programs > IDL x.x > DICOM Network Services and click the System button to start the utility in system configuration mode. On Macintosh, double-click DicomExNetStartup in the root IDL folder.