Tenda W300D User Manual page 107

ADSL2/2+ Router
the router's interfaces. When a connection is successfully established,
its status displays a "PASS", otherwise it displays a "FAIL" click ". To
enter the page below, click the "Diagnostics" tab on the left navigation
menu column:
If you are not clear about the test result, please click "Help" for more
details.
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