code: protected void doBye(SipServletRequest request) throws ServletException,
  			IOException {
  
  		logger.info("MediaPlaybackServlet: Got BYE request:\n" + request);
  		SipURI from = (SipURI) request.getFrom().getURI();
  		SipURI to = (SipURI) request.getTo().getURI();
  		ConferenceCenter.getInstance().getConference(to.getUser()).removeParticipant(from.toString());
  		SipServletResponse sipServletResponse = request.createResponse(200);
  		sipServletResponse.send();
  	}
docs: {@inheritDoc}