Allied Telesis AT-GS950/48 - Manual (Page 328)

Chapter 26: Cable Diagnostics
328
Port: This parameter displays the port (cable) selected.
Test Results: Displays the diagnostic results for each pair in the
cable. One of the following cable status parameters is displayed:
OK: There is not problem detected with the cable.
Open in Cable: There is an open wire within the cable.
Short in Cable: Two wires are shorted together within the
cable.
Cross talk in Cable: There is crosstalk detected between one
pair of wires and another pair within the cable.
Cable Fault Distance: This parameter specifies the distance
from the switch port to the cable fault.
Cable Length: This parameter specifies the length of the cable
connected to the switch port.
Note
If length is displayed as “N/A” it means the cable length is “Not
Available”. This is due to the port being unable to obtain cable
length/either because its link speed is 10M or 100M, or the cables
used are broken and/or of bad in quality.
Note
The deviation of “Cable Fault Distance” is +/-2 meters, therefore No
cable may be displayed under Test Result, when the cable used is
less than 2 m in length.