Edimax Technology BR-6424n - Manual (Page 65)

connect after no internet activity is detected in
minute(s). This option is only available when
connection type is ‘Connect on Demand’.
If you wish to select another connection type as broadband connection
type, click ‘Back’; or you can click ‘OK’ to finish with quick setup.
You’ll see the following messages:
Please click ‘Apply’ to save changes you made and restart the broadband
router, this requires about 30 seconds and the broadband router will stop
responding (this is normal and is not malfunction). You can reconnect to
this broadband router and continue on other settings later.