i have been struggling for a few hours to get this working and it is a pain. i plugged in my t46s in to a poe switch and turned on fine and it came with FW 184.108.40.206 and it did not provision at all. i even updated it to 220.127.116.11 as the website shows that is the minimum firmware. and still it is not provisioned as i was playing around with it i noticed that upon factory reset it would say 'sending provision request' and after 1 second 'update failed' then when i do a normal reboot i see for a split second network unavailable and then the messages above. so i added a reservation on my DHCP to change the ip address so that i can make sure it is talking properly. and then after a reboot i still see the same messages. and after checking the IP it has changed to what i had set it to any thoughts if it means anything i have tried a new extension as well as one that is already in use. and same issues another side note this is my first yealink phone. i currently have 4 cisco phones.