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Open WAN >> Internet Access page and then check whether the ISP settings are set
correctly. Click Details Page of WAN1/WAN2/WAN3 to review the settings that you
configured previously.
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Sometimes, a wrong connection can be improved by returning to the default settings. Try
to reset the router by software or hardware..
Warning: After pressing factory default setting, you will loose all settings
you did before. Make sure you have recorded all useful settings before you
pressing. The password of factory default is null.
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You can reset the router to factory default via Web page. Go to System Maintenance and
choose Reboot System on the web page. The following screen will appear. Choose Using
factory default configuration and click OK. After few seconds, the router will return all
the settings to the factory settings.
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Vigor2850 Series Quick Start Guide