This code system http://terminology.hl7.org/CodeSystem/security-source-type defines the following codes:
\n \n \n \n \n \n \n \n \n Code\n \n \n | \n \n \n \n \n \n Display\n \n \n | \n \n \n \n \n \n Definition\n \n \n | \n \n \n
\n \n \n \n \n \n 1\n \n \n \n \n \n | \n \n \n User Device | \n \n \n End-user display device, diagnostic device. | \n \n \n
\n \n \n \n \n \n 2\n \n \n \n \n \n | \n \n \n Data Interface | \n \n \n Data acquisition device or instrument. | \n \n \n
\n \n \n \n \n \n 3\n \n \n \n \n \n | \n \n \n Web Server | \n \n \n Web Server process or thread. | \n \n \n
\n \n \n \n \n \n 4\n \n \n \n \n \n | \n \n \n Application Server | \n \n \n Application Server process or thread. | \n \n \n
\n \n \n \n \n \n 5\n \n \n \n \n \n | \n \n \n Database Server | \n \n \n Database Server process or thread. | \n \n \n
\n \n \n \n \n \n 6\n \n \n \n \n \n | \n \n \n Security Server | \n \n \n Security server, e.g. a domain controller. | \n \n \n
\n \n \n \n \n \n 7\n \n \n \n \n \n | \n \n \n Network Device | \n \n \n ISO level 1-3 network component. | \n \n \n
\n \n \n \n \n \n 8\n \n \n \n \n \n | \n \n \n Network Router | \n \n \n ISO level 4-6 operating software. | \n \n \n
\n \n \n \n \n \n 9\n \n \n \n \n \n | \n \n \n Other | \n \n \n Other kind of device (defined by DICOM, but some other code/system can be used). | \n \n \n
\n \n \n