If not set already, try setting it to Auto.

Ensure that PC Port Mode is not set to Disabled.

Press Admin Settings > Network Configuration > Ethernet Menu > PC Port Mode.

Check the PC port settings on the phone itself.

( Click here for more on how to tell the difference.) In particular, ensure you are using a straight through (or 'patch') Ethernet cable and not a crossover Ethernet cable, which the phones do not have the built-in logic to accommodate.

Yes: This should confirm that all physical components are working properly.

No: This confirms a malfunction within the phone or the cable connecting the phone and the PC.

With the computer plugged into the phone's PC port, ping the network from the computer.

If not, ensure the phone is properly connected to the network and able to make and receive calls. If a valid reply is received, the phone is properly communicating with the network.On the phone, press Menu > Status > Diagnostics > Network > Ping.

To confirm the phone is functioning normally, run a ping test from the phone.Yes: The issue is likely isolated to the phone or the Ethernet cable used to connect it to the PC.No: There may be a problem with either the computer or the network itself.Plug the computer directly into the router.If at any point a connection is established, you can conclude troubleshooting. As you proceed through each step, re-test for an Internet connection.

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