Yealink IP Phones Auto Provisioning Guide
58
11.
Click the OK button to finish setting a custom option.
12.
Click to save the change.
You can add the option 66 via DHCP Turbo. The following shows the detailed processes.
1.
Click Named Policies-->Global, right click the blank area on the right of the main
page and then select New Option.
2.
Select TFTP Options from the pull-down list of Filter.