The server of PDS can be launched using the panel server from the GUI of PDQ Patient Demographic Supplier Simulator. So you can specify the port on which the PDQ Patient Demographic Supplier Simulator can listen.
You can use the GUI of PDQ Patient Demographic Supplier Simulator to delete some or all patients. You can manually add some patients, and you can generate patients using the IHE tool: Demographic Data Server. The GUI of the PDQ Patient Demographic Supplier Simulator uses this tool to generate patient from some countries: Fr, USA, Germany, etc. You can then add these patients to the database.
PDQ Patient Demographic Supplier Simulator has a wsdl which lets you communicate with this tool. The wsdl is here. The web service of PDQ Patient Demographic Supplier Simulator contains all methods needed to communicate between gazelle and this simulator. These methods let gazelle to start communication with the PDQ Patient Demographic Supplier Simulator and to send configuration of the SUT Consumer.