Downloading Configuration Files - Yealink SIP-T4X Provisioning Manual

Downloading Configuration Files from the Provisioning Server
Once obtaining a provisioning server address in one of the ways introduced above, the
phone will connect to the provisioning server and download the configuration files. The
phone will try to download the Common CFG file first from the provisioning server, and
then download the MAC-Oriented CFG file. If resource files need to be updated and
the access URLs has been specified in the configuration files, the phone will then try to
download and update the resource files.
Resolving and Updating the Configurations
After downloading, the phone resolves the configuration files, updates the
configurations and resource files to the phone flash. Generally, updated configurations
will automatically take effect after the auto provisioning process is completed. For
update of some specific configurations which require reboot before taking effect, for
example, network configurations, the phone will reboot to make the configurations
effective after the auto provisioning process is completed.
The phone calculates the MD5 values of the downloaded files. If the MD5 values of the
Common and MAC-Oriented configuration files are the same as those of the last
downloaded configuration files, this means these two configuration files on the
provisioning server are not changed. The phone will complete the auto provisioning
process without repeated update. This is used to avoid unnecessary restart and impact
of phone use.
If the configuration files have been AES-encrypted, the phone uses the Common AES
key to decrypt the Common CFG file and the MAC-Oriented AES key to decrypt the
CFG file after downloading the configuration files.
The phone only reboots when there is at least a specific configuration requiring reboot
need to be updated during auto provisioning.
For more information on the specific configurations which require reboot during
provisioning, refer to the section
page 57.
Verifying Configurations
After auto provisioning, you can verify the update via phone user interface or web user
interface. For more information, refer to Yealink phone-specific user guide.
During the auto provisioning process, you can monitor the downloading requests and
response messages by a WinPcap tool during the auto provisioning process. The
following shows some examples.
Downloading Configurations Files
Description of Configuration Parameters in CFG Files on
35