We have an on going issue for a while now (about a month or two) where random users will face issues where they can no longer receive queue calls. Direct calling to their extension works and they can make outbound calls but their softphone and deskphone (Aastra, Polycom, Yealink) dont ring when call comes into the queue. This used to happen maybe a couple of times a year but now it's happening more and more (2-3 times a week). It's at random for different users. The first solution is to take the user out of the queue and put it back in but that doesn't work 100% of the time. The only method that seems to fix the issue is deleting the extension and recreating it. I know it's not the phones because it's happening to three different phones from three different manufacturers. We've also tried restarting the phone but that doesn't do much since the queue calls dont even ring on the softphone. Any thoughts?