OsmocomBB

The audio sounds kinda choppy, but not really - one half are apparently decoding issues, the other one.. well.. hard to tell, bad timing doing blocking audio calls?
It does not appear to be cpu related.
Another problem is is that the (very large!) wq used by l1ctl_client_send keeps filling up, which obviously adds latency, until it overflows. At that point random messages get dropped, which is kinda bad...
Sometimes the audio improves after some time - I don't understand why/how.

This might affect phone setups, too.