TP-Link T1600G Series Configuration Manual page 707

Configuring Maintenance
4
Diagnosing the Device
4.1 Using the GUI
Choose the menu Maintenance > Device Diagnose > Cable Test to load the following
page.
Figure 4-1 Diagnosing the Device
1) In the Port section, select your desired port for the test.
2) In the Result section, click Apply and check the test results.
Port
Pair
Status
Length
Select the port for cable testing. The interval between two cable tests for one port
must be more than 3 seconds.
Displays the Pair number.
Displays the cable status. Test results include normal, close, open and crosstalk.
Normal : The cable is normally connected.
Close: A short circuit caused by an abnormal contact of wires in the cable.
Open: No device is connected to the other end or the connectivity is broken.
Crosstalk: Impedance mismatch caused by the poor quality of the cable.
If the connection status is normal, here displays the length range of the cable. The
value makes sense only when the cable is longer than 30m.
Diagnosing the Device
Configuration Guide 684