Troubleshooting
This section describes solutions
to some most commonly occurring problems.
Why does my phone display “Application missing”?
If you have experienced networking issues while the phone was downloading the application from the TFTP server, it is possible that the phone can no longer retrieve the required Þrmware Þle. In the event that the phone is no longer able to communicate with the TFTP server in its attempt to
be displayed.
The phone will display the following: “Recovery
To recover the Þrmware for your phone in this circumstance, please perform the following:
1.Launch your web browser on your computer. Please note that your computer will need to be on the same network as your IP phone.
2.In the URL, type: “http://<IP Address>” (where IP Address is the IP Address displayed on the phone). Your browser will launch the Aastra 480i IP Phone Firmware Recovery page.
3.Enter the name of the Þrmware Þle that is on the TFTP server and ready for download.
E.g. “Þrmware.st”.
4.Enter the IP of the TFTP server.
5.Press the Download Firmware button.
Please ensure that the TFTP server is running and accessible on the network. If the Þrmware Þle is correctly located on the running TFTP server, the phone will locate the Þle and reload the application onto the phone.
Why does my phone display the “No Service” message?
The phone will display the “No Service” message if the SIP settings have not been set up correctly. Check that the SIP settings are correct in the phone. If using the conÞguration Þles, this could be
a formatting or syntax error. For example, when entering the parameter “sip line1 user name: 5551231234", you cannot use formatting symbols such as
as in
How to reset the 480i phone?
From the 480i phone:
1.Press the £button to enter the Options List.
2.Select option 10. Phone Status to enter the Phone Status option.
3.Select option 3. Reset Phone.
4.Press the Reset softkey to reset the phone.
5.Press the Cancel softkey to cancel the current operation.
From the web client:
1.Click on the Reset
2.On the web page that just opened click on the Reset button to reset the phone.
Troubleshooting
Model 480i SIP Admin Guide 22