Polycom VVX 300, 400, etc

From VoIP.ms Wiki

UNDER CONSTRUCTION

CONFIGURATION

1. Access the Web Configuration Utility

Connect the phone to a network with a DHCP server and wait for it to boot to the main interface. This typically takes about 1-2 minutes. Depending on the firmware version the phone has your IP may be displayed once it boots.
You can always access the current IP information by going to the following location in the menu:

 Home (Button) -> Settings -> Status -> Network -> TCP/IP Parameters

Once you've obtained the phone's IP address, use your favorite web browser (Chrome/Firefox recommended) and visit the following address:

 https://<phone IP Address>/