Yealink SIP-T2 Series Provisioning Manual page 59

During auto provisioning, the phone requests to download the y000000000000.cfg
file and then download firmware from the provisioning server. Then the phone
requests the new URL "tftp://192.168.1.211/ProvisioningDir_new" to download
configuration files. Then the phone will automatically generate a
001565221229-local.cfg file where the personalized configuration settings are
written, and this file will not be uploaded to the provisioning server. For more
information on how to automatically generate a MAC-local.cfg file, refer to
Generating A MAC-local CFG file
After auto provisioning, the phone starts up successfully and personalized
configuration settings are protected. When a user customizes feature configurations
via web/phone user interface, the phone will save the personalized configuration
settings to the 001565221229-local.cfg file on the phone. Once the phone is
triggered to perform auto provisioning process, it will request to download the
y000000000000.cfg and 001565221229.cfg file in order and then update
configurations in the downloaded CFG files to the phone system. Personalized
configuration settings saved in the MAC-local.cfg file on the phone are written and
remained to the phone system after auto provisioning.
In this scenario, the phone will not upload the MAC-local.cfg file to provisioning server
and request to download the MAC-local.cfg file from provisioning server during auto
provisioning.
If a configuration item is both in the MAC-local.cfg file on the phone and Common CFG
file/ MAC-Oriented CFG file downloaded from auto provisioning server, setting of the
configuration item in the MAC-local CFG file will be written and saved to the phone
system.
The administrator wishes to upgrade firmware from the old version to the latest version
and then protect personalized configuration settings even after auto provisioning.
old firmware version supports a MAC-local CFG file to keep personalized configuration
settings.
Scenario Conditions:
SIP-T28P IP phone firmware version: 2.72.0.30. This firmware version supports a

MAC-local CFG file to keep personalized configuration settings.
SIP-T28P IP phone target firmware version: 2.72.0.50. This firmware supports a

MAC-local CFG file to keep personalized configuration settings.
SIP-T28P IP phone MAC: 001565221229

Provisioning server URL: tftp://192.168.1.211

Place the target firmware to the root directory of the provisioning server.

Downloading and Verifying Configurations
on page 80.
The
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