code: public void setStatus(int statusCode, String reasonPhrase) {
  		try {
  			final Response response = getResponse();
  			response.setStatusCode(statusCode);
  			response.setReasonPhrase(reasonPhrase);
  		} catch (ParseException e) {
  			throw new IllegalArgumentException(e);
  		}
  
  	}
docs: /*
  (non-Javadoc)
  @see javax.servlet.sip.SipServletResponse#setStatus(int, java.lang.String)