Hi , I am new to PJSIP symbian source code base. I am just wondering if somebody can help me to understand few intial things, then I should be able to continue on my own. I followed the steps as mentioned in http://trac.pjsip.org/repos/wiki/DevelopingSymbianAppWithCarbide#ImportingPJSIPProjectsand used symbian_ua_gui package. After that I got the license from Nokia and applied . So far so good. Next I installed the .sis file in my nokia mobile. It installed. Now when I am trying to run the application for around 1 second I see a configuration screen, then the screen exits, after that nothing happens. I am not able to register and make SIP calls. Now my question is, how do I set the registrar and proxy ip addresses / ports. Do I need to modify code to put these values , or I need to configure somewhere.., please help me. Also when I am using symbian_ua_gui, what is the starting function (looking for correcponding main function). Please reply back. Protea S.A.