Yealink Skype for Business HD IP Phones Administrator GuidexDHCP ........................................................................................................................................ 26DHCP Option ............................................................................................................................ 30Configuring Network Parameters Manually .............................................................................. 40PPPoE........................................................................................................................................ 45Configuring Transmission Methods of the Internet Port and PC Port ........................................ 48Configuring PC Port Mode ........................................................................................................ 52Branch Office Resiliency ................................................................................................................... 54Upgrading Firmware ........................................................................................................................ 54Upgrading Firmware via Web User Interface ............................................................................. 55Upgrading Firmware from the Provisioning Server .................................................................... 56Updating Phone Firmware from Skype for Business Server ....................................................... 61Configuring Basic Features ..................................................... 67Sign-in ............................................................................................................................................. 68User Sign-in .............................................................................................................................. 69PIN Authentication .................................................................................................................... 72Web Sign-in .............................................................................................................................. 75Remember Password........................................................................................................................ 80Sign out ........................................................................................................................................... 83Power Indicator LED ......................................................................................................................... 84Contrast ........................................................................................................................................... 87Backlight .......................................................................................................................................... 89Bluetooth ......................................................................................................................................... 91Updating Status Automatically ......................................................................................................... 93Web Server Type .............................................................................................................................. 95Time and Date .................................................................................................................................. 99NTP Time Server...................................................................................................................... 100Time and Date Settings ........................................................................................................... 105Daylight Saving Time .............................................................................................................. 108Language ....................................................................................................................................... 115Loading Language Packs ......................................................................................................... 116Specifying the Language to Use .............................................................................................. 122Key As Send ................................................................................................................................... 125Dial Plan ......................................................................................................................................... 129Dial-now ................................................................................................................................. 130Hotline ........................................................................................................................................... 134Directory ........................................................................................................................................ 137Skype for Business Directory ................................................................................................... 137Local Directory ........................................................................................................................ 142Call Log .......................................................................................................................................... 153Save Call Log ........................................................................................................................... 153Missed Call Log ....................................................................................................................... 155History Record Contacts Avatar .............................................................................................. 157Dial Search Delay ........................................................................................................................... 159