Polycom IP 320 Administrator's Manual page 378

Administrator's Guide for the SoundPoint IP / SoundStation IP / VVX Family
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To configure your phone through the web interface:
Using your chosen browser, do the following:
>>
To get your phone's IP address, press the Menu key, and then
a
selecting Status > Platform > Phone. Scroll down to see the IP
address.
Enter your phone's IP address as the browser address.
b
A web page similar to the one shown below appears.
Select SIP from the menu tab.
c
You will be prompted for the SIP username and password.
A web page similar to the one shown below appears.
Make the desired configuration changes.
d
Scroll down to the bottom of the Servers section.
e