DGS-1250 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
Fault messages:
• Open - This pair is left open.
• Short - Two lines of this pair is shorted.
• CrossTalk - Lines of this pair is short with lines in other pairs.
• Unknown - The diagnosis does not obtain the cable status, please try again.
• NA - No cable was found, maybe it's because cable is out of diagnosis specification or the quality is too bad.
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