Fix network error messages
If you are having trouble with network error messages on a single phone, use these steps to perform initial troubleshooting before contacting Customer Support. If all of your phones are down, contact your IT professional or Internet Service Provider (ISP) immediately.
Before you begin: These steps are advanced and are typically completed by a system admin.
1. Verify the phone is plugged in correctly.
- If daisy-chaining a computer to the phone, verify a network cable is plugged into the PC port on the phone and the other end is plugged into the computer. The phone should supply the connection to the computer (internet source > phone > computer).
2. Test the network cable.
- Swap the network cables for the non-working phone and a working phone.
- Test both phones.
Option Description If the non-working phone works with the network cable from the working phone... - Replace the network cable on the non-working phone.
- Test the phone to see if your issue is resolved.
If the working phone works with the network cable from the non-working phone... Continue to step 3, test the internet port.
3. Test the internet port.
- Plug the non-working phone into a working phone's internet port.
- Plug a working phone into the non-working phone's internet port.
- Test both phones.
Option Description If the non-working phone works with the working phone's internet port... Troubleshoot the non-working phone's internet port with your IT Professional or ISP. If the working phone works with the non-working phone's internet port... Continue to step 4, try a different network.
4. Try a different network.
- Plug the non-working phone into another network outside of the office (e.g., your home network).
- Test the phone.
Option Description If the non-working phone works on a different network... Troubleshoot your office network with your IT Professional or ISP. If the non-working phone does not work on a different network... Select Contact Support.
What to do next: If you still have network issues, select Contact Support.
