D-Link Wireless ADSL2/2+ 4-port Ethernet Router DSL-2640U - Manual (Page 73)

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When completed, the below pop-up window will appear confirmation that the
router has been rebooted.
Test
The diagnostics screen allows you to run diagnostic tests to check your DSL
connection. The results will show test results of three connections—
• Connection to your local network
• Connection to your DSL service provider
• Connection to your Internet service provider
There are three buttons at the bottom of the page—Next Connection (appears only
if you have created more than one connection), Test and Test with OAM F4—which
will allow you to retest if necessary.