| Contents | v
Enabling the Screen Capture via Phone User Interface.......................................................................108
Capturing the Current Screen of the Phone via Web User Interface................................................... 108
Troubleshooting Solutions...................................................................................109
IP Address Issues..............................................................................................................................................109
The IP phone does not get an IP address............................................................................................ 109
IP Conflict........................................................................................................................................... 109
Specific format in configuring IPv6 on Yealink IP phones................................................................. 110
Time and Date Issues....................................................................................................................................... 110
Display time and date incorrectly........................................................................................................ 110
Display Issues................................................................................................................................................... 110
The phone LCD screen blank.............................................................................................................. 110
The phone displays “Offline”...............................................................................................................110
Firmware and Upgrading Issues.......................................................................................................................111
Fail to upgrade the phone firmware.....................................................................................................111
The phone does not update the configurations.................................................................................... 111
System Log Issues............................................................................................................................................ 111
Fail to export the system log from a provisioning server (FTP/TFTP server).....................................111
Fail to export the system log from a syslog server..............................................................................111
Password Issues................................................................................................................................................ 111
Restore the administrator password..................................................................................................... 112
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