Register and make call

[Meherprasad cholker]

Hello,

          I have seen the examples in modules folder of cipango source code. I thought com-example-sipapp will help me to go further.But i struck in running application only.I the code i see code of registering a user and making call to user,but i m not able to register a user nor make call.I am able to run com-example-sipapp in cipango server.I can see HttpServlet's  output in the browser.

Can u please help me in running this application.What are the pre-conditions in the code should i modify ,and how do i register a user.I ll pleased if i could get some pieces of code samples.