Volume level display/levels for radio/telephone/CD/MP3

[ForestAthlete]

Hello All,

Is there a volume level indicator on the dashboard or Audio/COMAND display for the radio/telephone/CD/Bluetooth/Music Register the E Class W212?

Also, is the volume level the same for all audio outputs; radio, CD, Bluetooth, Music Register, SD card, USB? Or does each output have independent volume level settings?

Thanks
FA