User guide

Obtaining the Address of Provisioning Server
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Yealink IP phones support to obtain the provisioning server address during bootup
process in the following ways:
 Zero-Sp-Touch
 Plug and Play (PNP) Server
 DHCP Options
 Phone Flash
When the phone boots up, it will go by the following process to obtain the provisioning
server address step by step: Zero-Sp-Touch -->PNP server -->DHCP options (Custom
option --> option 66 -->option 43) -->Phone Flash.
The following sections detail each process.
Zero-Sp-Touch allows you to configure the network and provisioning server address via
phone user interface during bootup. This feature is helpful when there is a system failure
on the phone. To use Zero-Sp-Touch, you need to make sure that this feature is enabled.
To configure the Zero-Sp-Touch via web user interface:
1. Click on Upgrade ->Advanced.
2. Select Enabled from the pull-down list of Zero Active .
3. Set the waiting time(in seconds) in the Wait Time filed.