I'm a little confused can i use auto provisioning even i set STATIC IP address on yealink phones? Do i need to use DHCP 66 when i already setupo STATIC IP on the phones?
I see no reason this wouldn't work. What is causing you the confusion?
The dhcp66 is only meant to help admins segment their network perhaps. Regular dhcp is not suggested because MyPhone can make the Yealink dial using an http string. So with a changing ip... Might not work.
But a static private ip on a yealink should be fine.