code: public FireableEventType getEventId(EventLookupFacility eventLookupFacility,
  			Response response) {
  
  		String statusCodeName = null;
  		final int responseStatus = response.getStatusCode();
  		if (responseStatus == 100) {
  			statusCodeName = "TRYING";
  		} else if (100 < responseStatus && responseStatus < 200) {
  			statusCodeName = "PROVISIONAL";
  		} else if (responseStatus < 300) {
  			statusCodeName = "SUCCESS";
  		} else if (responseStatus < 400) {
  			statusCodeName = "REDIRECT";
  		} else if (responseStatus < 500) {
  			statusCodeName = "CLIENT_ERROR";
  		} else if (responseStatus < 600) {
  			statusCodeName = "SERVER_ERROR";
  		} else {
  			statusCodeName = "GLOBAL_FAILURE";
  		}
  
  		// in dialog responses use the 1.1 event id prefix
  		return getEventId(eventLookupFacility, new StringBuilder(RESPONSE_EVENT_PREFIX).append(statusCodeName).toString());
  	}
docs: Retrieves the event id for a SIP Response event.
  
  @param eventLookupFacility
  @param response
  @return