code: public void servletInitialized(SipServletContextEvent ce) {
  		SipFactory sipFactory = (SipFactory)ce.getServletContext().getAttribute(SIP_FACTORY);
  		SipApplicationSession sipApplicationSession = sipFactory.createApplicationSession();
  		
  		URI fromURI = sipFactory.createSipURI("BigGuy", "here.com");
  		URI toURI = sipFactory.createSipURI("LittleGuy", "there.com");
  		SipServletRequest sipServletRequest = 
  			sipFactory.createRequest(sipApplicationSession, "INVITE", fromURI, toURI);
  		SipURI requestURI = sipFactory.createSipURI("LittleGuy", "127.0.0.1:5090");
  		sipServletRequest.setRequestURI(requestURI);
  		try {			
  			sipServletRequest.send();
  		} catch (IOException e) {
  			logger.error(e);
  		}		
  	}
docs: /*
  (non-Javadoc)
  @see javax.servlet.sip.SipServletListener#servletInitialized(javax.servlet.sip.SipServletContextEvent)