Panasonic WX-CC411 Operating Instructions Manual page 12

(23) AUX Mic volume level indicator (Lane A)
Indication for the sound level
(24) Beep sound volume level indicator (Lane A)
Indication for the sound level
(25) Line input level indicator (Lane A)
Indication for the sound level
(26) Line output level indicator (Lane A)
Indication for the sound level
(27) Outside Mic indicator
ON/OFF indication
(28) Outside Mic indicator
ON/OFF indication
(29) Talking with customer indicator
ON/OFF indication
(30) Beep sound indicator
ON/OFF indication
(31) Talking with greeters indicator
ON/OFF indication
(32) Spead Team indicator
ON/OFF indication
(33) Vehicle detection indicator
ON/OFF indication