Remote clients using IP phones and 3CX Proxy Manager are working fine, but today we noticed that audio does not work on IPhone, Android and PC 3CX Phone clients when remote. I have uninstalled and reinstalled a new client on Android, with a new welcome email settings. I have tried the option of "PBX Delivers Audio" but that made no change. Calls connect but there is no audio either way. This has worked just fine in the past and I have made no changes to the 3CX settings or my network settings. I have kept up with updates; could something have changed?