TP-Link TD-8816 User Manual page 66

if you can access the Internet. If the problem persists, please go to the next step.
3) Consult your ISP and make sure all the VPI/VCI, Connection Type, account username and
password are correct. If there are any mistakes, please correct the settings and try again.
4) If you still cannot access the Internet, please restore your Router to its factory default settings
and reconfigure your Router by following the instructions in
5) Please feel free to contact our Technical Support if the problem still exists.

Note:
For more details about Troubleshooting and Technical Support contact information, please log on
to our Technical Support Website: http://www.tp-link.com/en/support
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