@OnTheCatwalks  I wonder did you figure it out in the end? I am facing the same issue now. Thank you!

Hi Leo,Yes! the stacks version are Version 16.12.03a

Hi Leo, I got the same the issue, here's the message, several ports cannot boot up successfully today with IP Phones.Here's is one of the port message, this port was working with IP Phone and after I re-plugged the cable, no more function. *Jan 8 18...

Any one upgrade any version and get fixed?