Draytek Vigor2920n User Manual page 122

To use 3G network connection through 3G USB Modem, please configure WAN3 interface.
Enable
Display Name
Physical Mode
Physical type
Line Speed
Active Mode and Backup
WAN/Backup Type
Vigor2920 Series User's Guide
Choose Yes to invoke the settings for this WAN interface.
Choose No to disable the settings for this WAN interface.
Type the description for such WAN interface.
Display the physical mode of such WAN interface.
In such WAN interface, no type can be selected.
If your choose According to Line Speed as the Load Balance
Mode, please type the line speed for downloading and
uploading for such WAN interface. The unit is kbps.
Active Mode – Determine the WAN interface will be active for
always(Always On) or be treated as a backup WAN
interface(Backup WAN).
Backup WAN/Backup Type – Determine the role of such
WAN interface. It will be changed according to the Active
Mode specified.
If you choose Always On as Active Mode, you can choose one
of the backup WAN interfaces from the Backup WAN drop
down list. Later, when such WAN is disconnected for some
reason, the backup WAN will be activated automatically to
prevent data transmission from connection interrupted.
If you choose Backup as the Active Mode, Backup WAN will
be changed into Backup Type. You have to specify which role
the WAN interface should play if you want to backup multiple
WANs. However, ignore this setting if you want to backup a
110