56 AXIS 243SA - System optionsRS485 - The COM ports on the AXIS 243SA supports several operational modes listed onthis page. For more information, please see COM ports RS-232 and RS-485, on page 62.Maintenance• Restart - The unit is restarted without changing any of the settings. Use this method ifthe unit is not behaving as expected.• Restore - The unit is restarted and most current settings are reset to factory default val-ues. The settings that are not affected are:• the boot protocol (DHCP or static)• the static IP address• the default router• the subnet mask• the system time• Default - The default button should be used with caution. Pressing this will return all ofthe video server's settings to the factory default values (including the IP address)• Upgrade Server - See Upgrading the firmware, on page 64.• Backup - To take a backup of all of the parameters, and any user-defined scripts, clickthis button. If necessary, it is then possible to return to a previous configuration if set-tings are changed and there is unexpected behavior.• Restore - click the Browse button to locate the saved backup file (see above) and thenclick the Restore button. The settings will be restored to the previous configuration.Note: Backup and Restore can only be used on the same unit running the same firmware. This feature is notintended for multi-configurations or for firmware upgrades.