protected function xTuneOk($channelMax, $frameMax, $heartbeat)
    {
        $args = new Writer();
        $args->writeShort($channelMax);
        $args->writeLong($frameMax);
        $args->writeShort($heartbeat);
        $this->sendMethodFrame(array(10, 31), $args);
        $this->waitTuneOk = False;
    }