Asus DSL-N12HP User Manual page 144

Click Next to continue or click Back to return to the previous step.
4. The WAN Setup - Summary screen shows a preview of the
WAN service you have configured. Check these settings and
click Apply/Save if they are correct, or click Back to modify
them.
After clicking Apply/Save, the new service should appear on the
main screen.
To activate it, you must click the Reboot button at the top of the
screen to reboot.
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