Telegram-desktop works nice after it starts the first time, which takes a while. I noticed a friend who never answers any calls was online and tried to call him with telegram just as a test. The connection was established right away and he answered and I managed to here his voice like a second before the call went numb - on my side. There had been just bit sounds on his end and he was so annoyed that called back a normal cellphone call, played fax machine sounds to me and hung up.

I read from some github thread that there was audio conf file to use and that it would be on next builds. That was 2018. So is the audio conf files adapted to the latest image? Would be nice to get the telegram calls work.