Hi! I apologize for the late reply. We figured it out shortly after I
posted this... it turned out to be an issue with one of the iOS
releases.. I can't remember which one.. I think it might have been the
15.0.2.
My team and I ran into a similar issue.. we just learned that it is only
affecting Facetime devices in our ICU running iOS 15.0.2.. anything less
than that works.