return DEFAULT_RING_CLASS;
throw new BeanValueStorage.NoValueException();
    public int getAlertInfoClass() {        Intercom intercom = getIntercom();        if (intercom == null || !intercom.isEnabled()) {            return DEFAULT_RING_CLASS;        }        // If the timeout is zero, then auto-answer. Otherwise ring for        // the specified timeout before auto-answering.        int timeout = intercom.getTimeout();        return timeout > 0 ? RING_ANSWER_RING_CLASS : AUTO_ANSWER_RING_CLASS;    }