See also:

INFO
- If you are controlling the telephone system by voice command for the first time or do not know the appropriate voice command, speak “Help”. The system announces the available commands. ...

Volume control switch
Push the volume control switch up or down to increase or decrease the volume. Tuning Memory change (radio): Push the tuning switch ( or ) for less than 1.5 seconds to change presets. Seek t ...

To turn system off
Press the /OFF button. ...