Model
/
Administration Guide 18
Troubleshooting
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 firmware file. In the event
that the phone is no longer able to
communicate with the TFTP server in
its attempt to re-download the
firmware and the phone cannot locate
the application locally, this message
will be displayed.
The phone will display the following:
“Recovery web-client at: <IP
Address>”. The IP Address displayed
is the IP address of the phone. If the
phone is unable to receive an IP from
the DHCP server or has lost its record
of its static IP, the phone will auto-
assign itself the default IP
192.168.0.50.
To recover the firmware 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 CT IP Phone Firmware
Recovery
page.
3.
Enter the name of the firmware file
that is on the TFTP server and ready
for download. E.g. “firmware.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 firmware file is
correctly located on the running TFTP
server, the phone will locate the file
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 configuration files,
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 “
555-123-1234
” to format the
number or the phone will not
recognize it.
How to reset the 480i CT phone?
From the 480i CT 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 sub-category
under the USER main category.
2.
On the web page that just opened
click on
the Reset
button to reset
the phone.
How to set the 480i CT phone to
factory default?
From the 480i CT phone:
1.
Press the
£
button to enter
the Options List.
