Tactile “5” key with raised bumps 
The “5” key has two bumps that enable you discern 
the position of other keys on the keypad. 
The large keys on the phone console enable you to access 
phone features and functions. 
VVX 300 series and 400 series phones have physical line 
keys that you can press to answer and end calls. 
Many features on the phones are accessible by pressing 
feature keys on the phone console. 
Tactile-discernible number, feature, and 
navigation keys 
Keys on the phone console are discernible by their size and 
shape. 
Many feature keys are illuminated when activated so 
you're alerted when a feature is enabled. 
The system plays an alert tone when the microphones are 
muted or unmuted using any of the Mute keys on the 
device or far-end system. The system plays an alert tone 
periodically if the device is muted for a set period of time.