12EnglishStaying within rangeThe sound quality through your headset will deteriorate if you move outside of range. 1) Moveback into range to restore sound quality. If you move too far from your cell phone, the call mightend or be re-routed to your cell phone from the headset, depending on the cell phone model youare using. Please see your cell phone’s User Manual for more information on this function.Remember!For optimal performance, wear the Jabra M5390 Multiuse headset and your cell phone on thesame side of your body or within a line of sight of one another. In general, you will get betterperformance when there are no obstructions between your headset and your cell phone.1)Note: If answering a call with telephone handset, make sure the headset is placed in charge cradle.Otherwise, the call will be routed through the headset.8.28. Features8.1 Muting & unmuting8.1 Press the Mute button onheadset. A dual tone will beheard in the headset.8.2 To unmute, press Mutebutton again. A dual tone will beheard in the headset.