Display Issue; Update & Reset Issue - Yealink SIP-T41S User Manual

Display Issue

Why does the phone prompt the message "Unregistered!"?
Check the registration status of your DD phone. If your phone is not registered to the base station,
register it manually. Refer to
Why does the phone prompt the message "Not In Range"?
Ensure that the base station is properly plugged into a functional AC outlet.

Ensure that the DD phone is not too far from the base station.

Why does the phone prompt the message "Network unavailable!"?
Ensure that the Ethernet cable is plugged into the Internet port on the base station and the Ethernet

cable is not loose.
Ensure that the switch or hub in your network is operational.

Update & Reset Issue
How to upgrade base station firmware?
To upgrade base station firmware via web user interface:
Click Settings->Upgrade.
1.
In the Select And Upgrade Firmware field, click Browse to locate the firmware file from your local
2.
system.
Click Upgrade to upgrade the base station firmware.
3.
Click OK to upgrade.
4.
The upgrading will take a few minutes.
Note Do not refresh or close the browser, or power off during the base station upgrading.
How to upgrade phone firmware?
To upgrade phone firmware via web user interface:
Click Settings->Upgrade.
1.
In the Select and Upgrade Handset Firmware field, click Browse to locate the firmware file from
2.
your local system.
Click Upgrade to upgrade the phone firmware.
3.
Click OK to upgrade.
4.
Phone Registration.
Troubleshooting
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