public function pauseTube($tube, $delay) {
		$this->_write(sprintf('pause-tube %s %d', $tube, $delay));
		$status = strtok($this->_read(), ' ');

		switch ($status) {
			case 'PAUSED':
				return true;
			case 'NOT_FOUND':
			default:
				$this->_error($status);
				return false;
		}
	}