Yealink SIP-T2 SERIES Administrator's Manual page 306

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
<contact display_name="Tom" office_number="2020" mobile_number="2021"
other_number="2112" line="2" ring="Resource:Ring1.wav"
group_id_name="Friend" default_photo="Config:cutom2.png"/>
5. Save the change and place this file to the provisioning server.
6. Specify the access URL of the custom local contact template file in the configuration
files.
There are two methods to specify custom avatar and icon for contacts:
Method 1 (only applicable to SIP VP-T49G IP phones):
local_contact.photo.url = tftp://192.168.10.25/cutom1.jpg
local_contact.photo.url = tftp://192.168.10.25/cutom2.png
local_contact.data.url = tftp://192.168.10.25/contact.xml
local_contact.icon_image.url = tftp://192.168.10.25/cutom1.jpg
local_contact.icon_image.url = tftp://192.168.10.25/cutom2.png
During the auto provisioning process, the IP phone connects to the provisioning
server ―192.168.10.25‖, and downloads the avatars (cutom1.jpg and cutom2.png),
icons (cutom1.jpg and cutom2.png) and the contact file ―contact.xml‖.
Method 2:
local_contact.image.url = tftp://192.168.10.25/photo1.tar
local_contact.data.url = tftp://192.168.10.25/contact.xml
local_contact.icon.url = tftp://192.168.10.25/photo2.tar
During the auto provisioning process, the IP phone connects to the provisioning
server ―192.168.10.25‖, and downloads the avatar file ―photo1.tar‖, icon file
―photo2.tar‖ and the contact file ―contact.xml‖.
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