Yealink SIP-T54S Administrator's Manual page 187

Scenario A Keep user personalized configuration settings
The administrator wishes to upgrade firmware from the old version to the latest version.
Meanwhile, keep user personalized settings after auto provisioning and upgrade.
For more information on the flowchart of keep user personalized configuration settings, refer
to Appendix E: Auto Provisioning Flowchart (Keep User Personalized Configuration Settings)
page 1036.
Scenario Conditions:
SIP-T46G IP phone current firmware version: 28.81.0.15. This firmware supports keeping

personalized settings and generating a <MAC>-local.cfg file.
SIP-T46G IP phone target firmware version: 28.81.0.40. This firmware supports keeping

personalized settings and generating a <MAC>-local.cfg file.
SIP-T46G IP phone MAC: 001565770984

Provisioning server URL: tftp://192.168.1.211

Place the target firmware to the root directory of the provisioning server.

The old firmware version supports keeping personalized settings and generating a <MAC>-
local.cfg file. To keep user personalized settings after auto provisioning and upgrade, you need
to configure the value of the parameter "static.auto_provision.custom.protect" to 1 in the
configuration file.
Do one of the following operations:
Scenario Operations I:
Edit the following parameters in the y000000000028.cfg file you want the IP phone to
1.
download:
static.auto_provision.custom.protect = 1
static.auto_provision.custom.sync = 1
static.firmware.url = tftp://192.168.1.211/28.81.0.15.rom
Trigger the IP phone to perform the auto provisioning process. For more information on
2.
how to trigger auto provisioning process, refer to
Auto Provisioning
During auto provisioning, the IP phone first downloads the y000000000028.cfg file, and
then downloads firmware from the root directory of the provisioning server.
The IP phone reboots to complete firmware upgrade, and then starts auto provisioning process
again which is triggered by phone reboot (the power on mode is enabled by default). It
downloads the y000000000028.cfg, 001565770984.cfg and the 001565770984-local.cfg file in
sequence from the provisioning server, and then updates configurations in these downloaded
configuration files orderly to the IP phone system. The IP phone starts up successfully, and the
personalized settings in the 001565770984-local.cfg file are kept after auto provisioning.
When a user customizes feature configurations via web/phone user interface, the IP phone will
Yealink SIP IP Phones Auto Provisioning Guide_V81
section in
Configuring Basic Features
Triggering the IP Phone to Perform the
on
.
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