Why is the screen blank?..................................................................................................................74
Why does the device display “Network unavailable”?.......................................................................74
Why do the device display time and date incorrectly?......................................................................74
How can I obtain the MAC address when the device is not powered on?........................................74
Why can't I receive calls?................................................................................................................. 74
Why doesn't my handset work?........................................................................................................ 74
How can I switch to Skype for Business edition?............................................................................. 74
Checking the IP Address of Device.................................................................................................. 75