protected function _reload($didNumber = NULL, $orderId = NULL)
    {
        $properties = $this->call('getservicedetails', array(
            "customer_id" => $this->_order->getCustomerId(),
            "order_id" => $orderId,
            "did_number" => $didNumber
        ));
        unset($properties['result']);
        $this->fromServiceData($properties);
    }