User guide

Yealink IP Phones Auto Provisioning Guide
30
Phone Model
Firmware Name
SIP-T21(P) E2
52.x.x.x.rom
To upgrade the IP phones‘ firmware in batch via auto provisioning, ask the distributor for
the firmware file, upload it to the provisioning server, and then specify the access URL in
configuration files.
##Specify the access URL of the firmware file.
firmware.url =
For example, enter ―tftp://admin:password@192.168.1.100/44.80.0.5.rom‖ (―admin‖ is
replaced by the authentication user name and ―password‖ is replaced by the
authentication password) in the ―firmware.url =‖ field. During the auto provisioning
process, the IP phone connects to the provisioning server ―192.168.1.100‖, and
downloads the firmware file ―44.80.0.5.rom‖.
For more information on the parameter, refer to Description of Configuration Parameters
in CFG Files on page 91.