Overview to your Polycom VVX 300 or 400 Series Phone 
What’s the difference between how I use a Polycom VVX 300 series phones 
and the Polycom VVX 400 series phones? 
The Polycom VVX 300 series phones and the Polycom VVX 400 series phones work 
exactly the same way. While the 300 series phones have a black and white screen with 
three keys on each side and the 400 series phones have a color screen with six keys on 
each side, the key sequences for performing each task (e.g., transferring calls) are 
identical.  
 
 
In this guide, we are using photos of the Polycom 400 series phones. With the 
exception of the screen color and then number of keys on each side of the 
screen, the phone layout and key sequences for the the Polycom 300 series 
phones are exactly the same.  
What is the basic layout of my phone?