3Com 3CNJ100 manual Troubleshooting the Network Jack

Models: 3CNJ100

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Troubleshooting the Network Jack

If using Power Over Ethernet, make sure the other end of the network cable is plugged into a switch on the network that has Power Over Ethernet integrated into it, or one that feeds into an external midspan power supply that supports Power Over Ethernet.

Local power supply is plugged into the Network Jack and into a working electrical outlet, if your network does not support Power Over Ethernet.

Verify the Network Jack is connected to the network properly by viewing the Link LED (it should be lit). If the Link LED is not lit, make sure the network cable:

Is terminated properly. Refer to the connector manufacturer’s instructions for terminating the cable. Be sure to test the connector and verify it is working.

Has a valid connection to the network.

Adheres to proper length and cabling specifications for your network.

Make sure the port on the switch to which the Network Jack is connected is configured as a standard MDI-X port.

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3Com 3CNJ100 manual Troubleshooting the Network Jack