Attero Tech by QSC
Axon DBU
User Manual
QSC, LLC 2020
614-00062
3.5– Bluetooth® Audio Bridging
3.5.1 – Media Bridging (only)
In this mode (A2DP profile), users may stream audio from media applications on the paired device. The user is protected from errant
streaming of call audio over Bluetooth® link.
The media bridging mode is an excellent solution for applications such as hospitality, retail and fitness center background music where
users want to maintain call privacy while sharing media audio from their device’s media applications.
*Note:
When Media Bridging (A2DP profile) is enabled, the DBU becomes a dedicated audio sink device. Audio can only be transmitted to the
DBU in this configuration.
3.5.2– Call Bridging (only)
In this mode (HFP profile), users may stream incoming/outgoing calls from the paired device to/from the Dante/AES67 network or USB input
and output. In this mode, the user is protected from errant streaming of media audio over Bluetooth® link.
The call bridging mode provides call connectivity for conferencing system users’ Bluetooth equipped devices to a networked audio based
conferencing system. The addition of Bluetooth connectivity provides simple bridging of far end meeting participants for on the fly meeting
productivity and backup conferencing connectivity in case of VoIP and Web-based conferencing service failures. The application diagram
below highlights the general system connectivity for a networked audio conferencing system utilizing Bluetooth call bridging with Attero
Tech’s call bridging enabled networked audio products.
3.5.3– Call & Media Bridging
In this mode (A2DP and HFP profile), users may stream audio from media applications on the paired device and also stream
incoming/outgoing calls from the paired device. Typically, when the paired device is not on a call, the paired device will perform Media
Bridging (A2DP profile) and when the paired device enters a call the device will automatically switch to Call Bridging (HFP profile).
*Note:
If your application requires call privacy, it is recommended to not utilize the combined call and media bridging mode as call audio
will be shared automatically over the audio connection.
3.6– Bluetooth® Pass-through AVRCP (AV Remote Control Protocol)
Many installed AV systems in both residential and commercial markets feature control products with customizable user interfaces. With a
connected Bluetooth audio device as a source, it is desirable to have access to the device information and source content (artist / album /
song) for use on the control system UI. Additionally, the end user of the system may control the source from any control panel that has this.
This is useful if the device is left somewhere to charge and is out of reach to simply change songs or stop the audio playback.
Control API access is be available for the following AVRCP pass through commands:
a)
Play
b)
Pause
c)
Next Track
d)
Previous Track
e)
Volume Up
f)
Volume Down
The AVRCP controls are provided within unIFY Control Panel for system commissioning and testing.
