When placing calls or while on a call, you can use dialpad key shortcuts (also called star codes), on your desk phone or in Virtual Office, to perform various actions. Some star codes require special permissions for a user to perform that action. The information can be found at: https://support.8x8.com/us/Equipment_and_Devices/Phones/General_Phone_Settings/Feature_Access_Codes_or_Dialpad_Key_Shortcuts_for_Virtual_Office