Which is the best branch for running mobile on DP-L10?

Hello, I have just got myself a Pirelli DP-L10, and I would like to use it to demonstrate OsmocomBB to my local LUG. I would like to demonstrate mobile, talking to layer1 via osmocon, making and receiving a voice call, sending and receiving SMS. I only have a few basic questions: - Should I use the master branch in osmocom-bb git, or one of the other branches? The Branches page in the wiki is blank. - Am I correct in my understanding that, at least in some branch (see above), osmocom-bb does support this phone well enough to actually make a call? (Yes, I realize that layers 2&3 run on an attached host, hence the phone has to be tethered to a laptop running osmocon and mobile the whole time, and I do know how to enable Tx in the target build. :) - How is the voice routing implemented? Do I need to use lcr integration on the host, or will the audio come out of the phone's own speaker even though all higher layers of the stack are running on the PC? If the voice call audio does go through the phone's own speaker and mic, which ones? This phone model has both an earpiece speaker and a loudspeaker, plus the usual analog headset jack. Which of these audio routing options are supported, if any? Thanks everyone for this awesome project! I can't wait to show it working to my LUG. Kim