Okay so several times when receiving a call on my iPhone 3cx client it drops the call when I go to answer. For a long time I thought this was user error when people kept telling me about this but it has continued to happen. We are on v15.5 and we have a customer on v15 that experiences the issue as well. I haven't been able to recreate while doing a packet capture but any assistance would be much appreciated. I also haven't recreated on Android as of yet.