Specifications

Configuring and Maintaining 400-Series IP Phones Viewing Diagnostic Information on a Phone
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6. To return to the Diagnostics menu, do one of the following:
 On the IP420, press #.
 On the IP480, IP480g, and IP485g, press the Back soft key or press the selector button on the
navigation key pad.
7. To exit, do one of the following:
 On the IP420, scroll to the bottom of the Diagnostics menu to select the Exit option, and then
press the selector button on the navigation key pad.
 On the IP480, IP480g, and IP485g, press the Exit soft key or press the selector button on the
navigation key pad.
Using Traceroute to Determine the Network Route to a Host
1. With the phone on hook, press the MUTE key followed by 3424# (DIAG#).
The Diagnostics menu opens.
2. Use the navigation key pad to scroll to the Traceroute submenu.
3. With the Traceroute submenu highlighted, do one of the following:
 On the IP420, press the selector button on the navigation key pad.
 On the IP480, IP480g, and IP485g, press the Open soft key or press the selector button on
the navigation key pad.
The Traceroute screen is displayed.
4. Use the key pad to enter an IP address. On an IP480, IP480g, or IP485g, you can also enter a
DNS name.
5. Do one of the following:
 On the IP420, press #.
 On the IP480, IP480g, and IP485g, press the Start soft key or press the selector button on the
navigation key pad.
The phone displays the network route for the IP address or DNS server.
Tip
Press the * key to insert a period in an IP address or DNS name. In non-numeric mode (which is
set through the left soft key), press the * key repeatedly to insert other symbols such as / : @.
On the IP420, press the speakerphone button to backspace. To proceed with the value you have
entered, press #.