Administrator’s Guide for SIP-T5 Series Smart Media Phones
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Password Issues
How to restore the administrator password?
Factory reset can restore the original password. All custom settings will be overwritten after
reset.
Power and Startup Issues
What will happen if I connect both PoE cable and power adapter? Which
has the higher priority?
IP phones use the PoE preferentially.
Why does the IP phone have no power?
If no lights appear on the IP phone when it is powered up, do one of the following:
Reboot your IP phone.
Replace the power adapter.
Why is the touch screen black?
If the power indicator LED is on, the keypad is usable but the touch screen is black, please
reboot your IP phone.
Why does the IP phone always display the Yealink logo?
If your IP phone does not boot, check if the provisioning server is accessible on the network and
a valid software firmware and valid configuration files are available. Try to use recovery mode to
get your phone ready. For more information on recovery mode, refer to
Why can’t IP phone supply power for device using USB port?
The USB port of Yealink IP phone has a limit current of 525 ~ 875mA. Make sure that the device
is USB flash drive or mobile hard disk with low power.
Hardware Issues
Why is the sending/receiving volume of the speaker too low?
If there is no volume sending from the speaker or sending volume is too low, the
Hands-free MIC cable may not have been properly connected.
Summary of Contents for CP969
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Page 781: ...Troubleshooting 759 The phone begins rebooting Any reboot of the phone may take a few minutes ...
Page 787: ...Troubleshooting 765 information on capturing packets refer to Capturing Packets on page 735 ...
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