D-Link DSL-520B - Diagnostics; Running Diagnostic Tests

66D-Link DSL-520B ADSL2+ Modem User Manual
Section 10 - Diagnostics
Diagnostics
ThediagnosticsscreenallowsyoutorundiagnosticteststocheckyourDSLconnection.Theresultswillshowtestresultsoftwoconnections:
• Connectiontoyourlocalnetwork
• ConnectiontoyourDSLserviceprovider
Click Run Diagnostic Tests to begin.