D-Link DI-206 - Manual (Page 151)

DI-206 ISDN Remote Router
Configuration and Management 139
Please make sure you wish to wipe out all settings and configure the
router from scratch before you perform a factory reset
System Settings Backup/Restore
The backup and restore system settings functions are used to backup
the router settings. The files created by these processes are different
than configuration files or software update files that are used in the
Software Update submenu. The files defined here can be used as a
backup for all the router settings and can be used to configure another
DI-206 with exactly the same settings, or as a backup before you make
major changes to the configuration.