10English7. Using the Jabra M5390 USB Multiuse headset with multiple Bluetooth®-enableddevicesYour Jabra M5390 USB Multiuse headset can be paired with up to 8 devices. However, only two can beconnected (paired with the headset, turned on and in range) with the headset at one time. This couldbe any two Bluetooth® devices (for example. The Jabra A335w Dongle and a mobile phone, or twomobile phones).The headset is per default paired with the dongle. This means that the headset will automaticallyconnect to the A335w Dongle from the factory if in range and turned on.It is also possible to have two Bluetooth®-enabled mobile phones connected to the Jabra M5390 USBMultiuse headset simultaneously. In this case, the A335w dongle should be disconnected from the headset.8. Troubleshooting & FAQQ: Nothing happens when I try to adjust the clear dial tone.A: Make sure the base is powered (visual indicator on base unit is steady green). Then establisha voice link between base and headset (visual indicators on base unit and headset arefl ashing green). Also ensure that the telephone is activated (handset is off the hook or“line” button is pressed).Q: I cannot hear anything in my headset when using my mobile phone.A: - Increase the volume on the headset (or phone).- As the volume level needed might vary between your desk phone and mobile phone, itmight be best to adjust the level on the phones.- Then use the headset volume level adjustments for general adjustments (but ensure thatthe headset is paired with the mobile phone).- Make sure that the phone is connected to the headset - if it does not connect either fromthe phone’s Bluetooth® menu or by tapping the Answer/End button, follow the pairingprocedure (see section 4 “Pairing your headset with your mobile phone” in this guide).Q: Can I use wideband with a mobile phone?A: No, the headset only supports wideband with the Jabra A335w Dongle. Please see the JabraA335w Dongle manual for wideband settings.Note: If your desk phone has a volume button, it might help to adjust it to optimize the sound quality in yourheadset.