Yealink SIP-T2XP, Auto Provisioning Manual

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Obtaining the Address of Provisioning Server
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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:
Yealink 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.
To configure PnP via web user interface:
1. Click on Settings->Auto Provision.
2. Mark the On radio box in the PNP Active field.
3. Click Confirm to accept the change.
Any PnP server activated in the network responses with a SIP NOTIFY message, and an
address of the provisioning server is contained in the message body. Then the phone