Reference Number Feature Feature Description
5,6 Volume keys Adjusts the volume of the handset, headset, speaker,
and ringer.
7 USB port(s) Poly CCX 500 phones include one USB-A port and one
USB-C port.
Enables  you  to  attach  a  USB  flash  drive  or  USB
headset.
8 Headset indicator Displays  when  the  phone  is  powered  on.  The  icon
glows green or blue when a headset is connected and
activated.
9 Speakerphone indicator Displays  when  the  phone  is  powered  on.  The  icon
glows green when activated.
10 Speaker Provides ringer and speakerphone audio output.
11 Mute key Mutes local audio during calls and conferences.
Getting Started
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