Hello everybody! We roll-out JAMI in the network without Internet access. Network have 5 IP subnets. In 2 subnets we have Windows 10 with JAMI clients, in 2 subnets we have Android phones with JAMI clients, installed from Google Play. In the last subnet we have Debian 11 server with dhtnode installed from APT package. We use this this dhtnode as a bootstrap for all clients. All other settings disabled. For Android we disable push notifications and allow JAMI to run in background.
Windows 10 clients works just fine - calls, chat, file transfer. When we call from Android to Windows, it works. When Windows calls to Android, Android cannot pickup call. JAMI rings, but Android phone cannot pickup or reject call. After some time call disconnects with error and Jami on Android comletely hangs - only phone reboot helps to make JAMI workable again.
Any ideas how to fix this?