| Contents | iiiYealink USB Connect................................................................................ 24Update Firmware............................................................................................................................... 25Update Station Firmware........................................................................................................25Update Headset Firmware......................................................................................................26Manually Pair Headset with BT51.....................................................................................................27Factory Reset/Reboot........................................................................................................................28Yealink Connect Application.................................................................... 28Change Headset Name.....................................................................................................................29Disconnect Connected Device.......................................................................................................... 30Remove Connected Device...............................................................................................................30Update Firmware............................................................................................................................... 30Headset Factory Reset......................................................................................................................30Change Settings for Workstation.............................................................31Basic Settings....................................................................................................................................31Advanced Settings.............................................................................................................................33Change Settings for Headset................................................................... 35Basic Settings....................................................................................................................................35Advanced Settings.............................................................................................................................37Optional Accessories................................................................................ 38Use Busylight BLT60......................................................................................................................... 38Use BT51 Dongle..............................................................................................................................39Support....................................................................................................... 39FAQ.................................................................................................................................................... 39Safety Instruction............................................................................................................................... 39