Yealink Yealink SIP-T28P, User Manual

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Yealink Auto provisioning User Guide
20
DHCP Options
Yealink IP phones support obtaining the provisioning server address from DHCP options.
You can configure the phone to obtain a provisioning server address from a custom DHCP
option, or the phone will automatically detect the Option 66 or Option 43.
To obtain a provisioning server by a custom DHCP option, make sure that the DHCP
option is set properly.
To configure the DHCP option via web user interface:
1. Click on Upgrade -> Advanced .
2. Enter the value (128-254) in the Custom Option field.
3. Select the desired type from the pull-down list of Custom Option Type .
A valid Custom Option is from 128 to 254. The Custom Option Type must be in
accordance with the one defined in the DHCP server.