Hello List, as part of my research, I'm trying to use the 'mobile' app to send and receive data on traffic channels. That is, I want to replace the audio stream from the phone's microphone/speaker by something else supplied by the computer attached to the phone. I realize this feature isn't fully implemented in osmocom-BB currently, and I'm willing to write some code to make it work (and share my results with this list if there's any interest). Here's what I've done so far: - merged the sylvain/traffic and jolly/voice branches - added some code to mobile that writes the payload of downlink frames to a user-specified file once a call has been established As far as the receiving end goes, this seems to work. I'm still unclear as to where I should start on the sending side -- I do expect it to be somewhat more complex. Any pointers -- or a rough outline of what is left to be done to make this work -- would be much appreciated. Kind regards, Michael Voelske