D-Link DSL-2750B User Manual page 100

Section 3 - Configuration
DIAGNOSTICS
Your router is capable of testing your DSL connection. The individual tests are listed below. If a test displays a failed status, click "Rerun Diagnostics
Tests" at the top of this page to make sure failed status is consistent. If the test continues to fail, click "Help" and follow the troubleshooting
procedures.
To access the Diagnostics setting window, click on the Diagnostics button under the MAINTENANCE tab.
WAN Connection
Select a WAN interface and click Rerun Diagnostics Tests.
D-Link DSL-2750B User Manual 100