Yealink IP Phones Auto Provisioning Guide
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from the identified directory on the provisioning server.
The following example assists in explaining the wildcard feature:
You want to deploy SIP-T23G IP phones in your environment. IP phones are configured to
obtain the provisioning server address via DHCP options. The following details how to
deploy the SIP-T23G IP phones using wildcard feature.
1. Create two directories on the root directory of provisioning server.
2. Configure the directory name of this directory to be “T23G”.
3. Place the associated configuration files to the directory created above.
4. Configure the provisioning server URL on the DHCP server as:
tftp://192.168.1.100/$PN.
5. Configure the value of the parameter “auto_provision.url_wildcard.pn”.
The default value of the parameter “auto_provision.url_wildcard.pn” is ‘’T23G’’ for the
SIP-T23G IP phones. If the default value is different from the directory name, you need to
configure the value of this parameter to be the directory name on the IP phones in
advance.
During startup, IP phones obtain the provisioning server URL “tftp://192.168.1.100/$PN”
via DHCP option, and then replace the character “$PN” in the URL with “T23G” for the
SIP-T23G IP phones. When performing auto provisioning, the SIP-T23G IP phones request
to download configuration files (y000000000044.cfg and <MAC>.cfg files ) from the
provisioning server address “tftp://192.168.1.100/T23G”.
If the URL is configured as “tftp://192.168.1.100/$PN/$MAC.cfg” on the DHCP server, the
SIP-T23G IP phones will replace the characters “$PN” with “T23G”, and replace the
characters “$MAC” with their MAC addresses. For example, the MAC address of one
SIP-T23G IP phone is 00156574B150. When performing auto provisioning, the IP phone
will only request to download the 00156574B150.cfg file from the provisioning server
address “tftp://192.168.1.100/T23G”.
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