Diagnostics - TP-Link TD-8840 User Manual

4.4 Diagnostics

Choose "Diagnostics", and your modem will test your DSL connection. Then you will see the test
results for the connectivity to your local network and your DSL service provider similar to Figure
4-38.
TD-8840 ADSL2+ Modem Router User Guide
Figure 4-37
Figure 4-38
44