.If the device is connected to the telephone control via A2DP, no other devices can be paired.
The Bluetooth visibility of the telephone control deactivated for the duration of the active A2DP
connection. This is not a fault in the telephone control. In order to pair further devices, deactivate the
Bluetooth audio (A2DP) feature in Telephone settings and Bluetooth settings and activate it again
after completing the pairing.
Adjusting the volume
.