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Yealink SIP-T4U Series User Manual

Yealink SIP-T4U Series
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Using Handsets with T57W/T54W/T53W/T53 Phones
145
Default
1
Supported
Devices
All handsets except DD phones
Parameter
over_the_air.base_trigger <y0000000000xx>.cfg
Description
It enables or disables to upgrade the handset firmware compulsively when the phone detects a new
handset firmware from 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 to confirm upgrading the firmware or not. 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.
Default
1
Parameter
over_the_air.url.w52h <y0000000000xx>.cfg
Description
It configures the access URL of the W52H handset firmware file.
Note: The priority of parameter “over_the_air.url.w52h” is higher than “over_the_air.url”.
Permitted
Values
URL within 511 characters
Default
Blank
Parameter
over_the_air.url.w53h <y0000000000xx>.cfg
Description
It configures the access URL of the W53H handset firmware file.
Note: The priority of parameter “over_the_air.url.w53h” is higher than “over_the_air.url”.
Permitted
Values
URL within 512 characters
Default
Blank

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Yealink SIP-T4U Series Specifications

General IconGeneral
BrandYealink
ModelSIP-T4U Series
CategoryIP Phone
LanguageEnglish

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