Hi Denis, Pavel, Marcel, On Fri, May 11, 2018 at 08:02:01PM -0500, Denis Kenzior wrote: > This reminds me... Weren't you the one who mentioned that you got voicecalls > working on QMI devices? Does that include the circuit switched control > operations (e.g. dial, etc) as well? Any chance that code might be > upstream-able? let me pull in Alexander "lynxis" Couzens into the loop, he has been doing all QMI / ofono related developments for us in the Osmocom project. My knowledge is that we're testing our network-side stack with voice calls related tests (via ofono/QMI) for quite some months, but lynxis would know all related details. As there are no modems that reliably can deliver the actual audio data via USB (aside some non-supported outdated experimental firmwares), we're only testing the signaling plane so far. We're building a custom board that contains four PCM bus slaves (at different clocks!) in order to pick up the audio/voice data, but this doesn't exist yet. See http://laforge.gnumonks.org/blog/20170902-cellular_modems-voice/ for more background on the user/voice plane. -- - Harald Welte http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)