Bose A20 Aviation Owner's Manual page 22

Tab 8, 16 Tab 7, 15
U H
SING THE EADSET
Multifunction/Audio priority switch
The multifunction/audio priority switch has three positions:
Position
Top
Middle
Bottom
Note: On the Bluetooth
is present, the audio from the call mutes the signal on the AUX audio input. In either
the top or middle position of the multifunction switch, both the intercom and the
Bluetooth wireless technology signal are heard as mixed.
18
Tab 6, 14 Tab 5, 13
Function
Intercom prioritized
over AUX
Intercom mixed with
AUX
Intercom only
®
control module, when a Bluetooth wireless technology call
Tab 4, 12 Tab 3, 11
Operation
When the switch is in the top position and an
intercom signal is detected, AUX audio is muted.
When the switch is in the middle position and an
intercom signal is detected, AUX audio is mixed
with the intercom audio.
When the switch is in the bottom position, only
intercom audio is active.
Tab2, 10 English