User guide

Yealink SIP-T4X IP Phones Auto Provisioning Guide
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When Zero Touch is enabled, there will be a configuration wizard during the startup:
Press the OK soft key.
The network parameters are configurable via phone user interface:
Press the Next soft key after finishing the network parameters.
Configure the provisioning server address, authentication user name (optional) and
password (optional) in the Auto Provision screen.
An example of screenshot is shown as below:
The IP phones support to obtain the provisioning server address from the PnP server. The
phone broadcasts the PnP SUBCRIBE message to obtain the provisioning server address
during startup. To use Plug and Play, make sure this feature is enabled.