public function can_dahdi_dndoff()
{
$write = array(implode("\r\n", array('action: DAHDIDNDOff', 'actionid: 1432.123', 'dahdichannel: channel', '')));
$action = new \PAMI\Message\Action\DAHDIDNDOffAction('channel');
$client = $this->_start($write, $action);
}