Yealink SIP-T4U Series User Manual

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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Handset Firmware Upgrade Configuration
The following table lists the parameters you can use to upgrade handset firmware.
Parameter
over_the_air.url <y0000000000xx>.cfg
Description
It configures the access URL of the handset firmware file.
Note: The priority of parameter “over_the_air.url” is lower than “over_the_air.url.w56h”/over_the_air-
.url.w53h/“over_the_air.url.w52h”.
Permitted
Values
URL within 511 characters
Default
Blank
Web UI
Settings > Upgrade > Select and update handset firmware.
Parameter
over_the_air.url.w56h <y0000000000xx>.cfg
Description
It configures the access URL of the W56H handset firmware file.
Note: The priority of parameter “over_the_air.url.w56h” is higher than “over_the_air.url”.
Permitted
Values
URL within 511 characters
Default
Blank
Parameter
over_the_air.url.cp930w <y0000000000xx>.cfg
Description
It configures the access URL of the CP930W phone firmware file.
Note: The priority of parameter “over_the_air.url.cp930w” is higher than “over_the_air.url”.
Permitted
Values
URL within 512 characters
Default
Blank
Parameter
over_the_air.handset_tip <y0000000000xx>.cfg
Description
It enables or disables to pop up a tip when upgrading the handset firmware from the provisioning
server.
Note: It works only if “over_the_air.base_trigger” and “over_the_air.handset_trigger” are set to 0 (Dis-
abled).
Permitted
Values
0-Disabled
1-Enabled, the handset will pop up the message “Handset has a new firmware, update now?”.
Default
1
Supported
Devices
All handsets except DD phones
Parameter
over_the_air.handset_trigger <y0000000000xx>.cfg
Description
It enables or disables to upgrade the handset firmware compulsively when the handset is registered
to a phone or turned on successfully.
It is only applicable when the current handset firmware is different from the one on the provisioning
server.
Permitted
Values
0-Disabled, if “over_the_air.handset_tip” is set to 1 (Enabled), it will pop up a tip on the handset to
notify the user of firmware upgrade. If “over_the_air.handset_tip” is set to 0, you may go to Settings >
Upgrade Firmware on the handset to trigger the upgrading manually.
1-Enabled, it will upgrade the handset firmware compulsively without a pop-up tip on the handset.

Yealink SIP-T4U Series Specifications

General

Brand	Yealink
Model	SIP-T4U Series
Category	IP Phone
Language	English