Turning the Speakerphone on/off
Turning the Speakerphone on 
Press and hold the Power on/off button.
The LED lights up white.
Turning the Speakerphone off
Press and hold the Power on/off button. The LED flashes red 3 times and turns off.
All volume settings are saved automatically when the speakerphone is turned off.
Connecting Bluetooth® devices
Activate Bluetooth on the paired device(s).
If the Bluetooth LED does not flash blue (automatic search after switch-on):
X Press the Bluetooth button to connect manually.
The LED flashes blue while the speakerphone attempts to connect to previously paired Bluetooth device(s).
Once the connection is successfully established, the LED lights up blue.
Disconnecting Bluetooth® device(s)
Press the Bluetooth button. The LED turns off. To re-connect paired Bluetooth devices:
Press the button again.
OR
Deactivate Bluetooth on the connected device
Press and hold the multi-function button and Bluetooth button until you hear a voice prompt.
The LED flashes blue three times to indicate that pairing list is cleared.
Clearing the dongle’s pairing list
Plug the dongle into the USB port of your computer.
Press and hold the button until the LED flashes blue
and red.
Double tap the button.
The LED flashes purple three times to indicate that pairing list is cleared.
The dongle automatically enters pairing mode.
Bluetooth® transmission range
Calling and audio playback is only possible in the Bluetooth transmission range of the devices. The transmission range largely depends on environmental conditions such as wall thickness, wall composition etc. With a free line of sight, the transmission range of most mobile phones and Bluetooth devices is up to 25 meters.
If you leave the Bluetooth transmission range, the audio quality deteriorates first and later connected devices will be disconnected.
If you re-enter the Bluetooth transmission range within short period of time, the speakerphone will attempt to restore the connection(s) – in personal mode only.
If you spend a longer period of time outside the Bluetooth transmission range:
X Press the Bluetooth button to connect manually.