Yealink SIP-T3 Administrator's Manual page 24

Administrator's Guide for SIP-T2 /T3 /T4 /T5 /CP920 IP Phones
Notify Reboot Configuration
Rebooting the Device via the Phone User Interface
Rebooting the Device via Web User Interface
Troubleshooting Solutions
IP Address Issues
The device does not get an IP address
Solving the IP conflict problem
The Specific format in configuring IPv6 on Yealink phones
Time and Date Issues
Display time and date incorrectly
Display Issues
The phone screen is blank
The phone displays "No Service"
Phone Book Issues
Difference between a remote phone book and a local phone book
Audio Issues
Increasing or decreasing the volume
Get poor sound quality during a call
There is no sound when the other party picks up the call
Play the local ringback tone instead of media when placing a long-distance number without plus 0
Wi-Fi and Bluetooth Issues
The wireless signal strength is low
The phone cannot connect to Bluetooth devices all the time
The Bluetooth headset affects IP phone's voice quality
Firmware and Upgrading Issues
Fail to upgrade the phone firmware
Verifying the firmware version
The IP phone does not update the configurations
System Log Issues
Fail to export the system log to a provisioning server (FTP/TFTP server)
Fail to export the system log to a syslog server
Protocols and Ports Issues
What communication protocols and ports do Yealink IP phones support?
Password Issues
Restore the administrator password
The web screen displays "Default password is in use. Please change!"
Logo Issues
Why does the IP phone use DOB format logo file instead of popular BMP, JPG and so on?
Power and Startup Issues
Both PoE cable and power adapter is connected to the phone
The power LED indicator has no lights
The Phone screen is black
The IP phone always displays the Yealink logo
Other Issues
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