Draytek Vigor2620 Series Quick Start Manual page 21

Click OK on this page to apply the changes and the router will then prompt to restart.
Click the OK button to restart the router.
5. Once the router has restarted, the [Online Status] > [Physical Connection] page
will display the VDSL information and PPP connection status, if the WAN1 section
shows an IP address, it has connected to the internet successfully:
Note If the WAN 1 IP address displayed begins with 172.16.x.x, it's
possible that the ISP has not accepted the supplied Username
and Password for the Internet connection.
Check that the ISP Access Setup - Username and Password match
the details supplied by your ISP.
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