User Manual
Table Of Contents
- About your Bose® A20® Aviation Headset
- Components
- Preparing the Headset for Use11
- The battery compartment
- Connecting the headset to the aircraft
- Wearing and adjusting the headset
- Using the control module
- Primary and secondary audio sources
- AUX audio sources (wired)
- Bluetooth® audio sources (wireless)
- Using the headset with a Bluetooth® device
- Pairing the first device
- Pairing another device
- Switching between connected devices
- Bluetooth multi-function button
- Making and answering calls
- Reconnecting to a previously connected device
- Recovering a lost connection
- Disconnecting a Bluetooth device
- Clearing the headset pairing list
- Controlling Bluetooth volume
- Using the headset with a Bluetooth® device
- Secondary audio modes
- Cleaning the headset
- Instructions for continued airworthiness
- Managing multiple secondary sources
- Ordering parts and accessories
- Contact information
- Limited warranty
- Locating the headset serial number
- Mounting the aircraft panel connector
- Replacing parts
- Microphone windscreen

Using the Headset
English - 23
Making and answering calls
Call activity What to do
To make a call Dial from your connected phone. The call will automatically
transfer to the headset.
To activate voice control
(if available)
When there are no active or incoming calls, briefly press
.
To answer a call
Briefly press
. You should hear a short beep in the headset
before you hear the incoming call.
To end a call
Briefly press . You should hear two short beeps in the
headset to indicate that the call has been ended.
To ignore an incoming call
Press
for one second.
To redial the last number
When there are no active or incoming calls, press
twice in
quick succession.
To transfer the audio to
the mobile phone
When you are on a call, press
for three to four seconds.
This transfers the audio to the mobile phone handset while the
Bluetooth
®
connection remains active.
Note:
Some functions may not be available for some devices. Refer to your device
user’s guide for further details.
Note: If you are on a call and unplugged from the intercom, the headset will allow
you to complete your call, then it will turn off approximately three seconds
after the call is terminated. To use the headset when unplugged from the in-
tercom (to listen to secondary audio sources or to make or receive calls), we
recommend you disable the Auto Off feature for uninterrupted functionality.
See “Auto Off” on page 13.