Hey everyone, I'm having some problems with the microphone and pjsip in ARM. I can receive calls and play audio just fine, but the mic doesn't work in either pjsystest or pjsip. I ran the recfile sample program and that works fine, so it's not a hardware problem. aplay and arecord also work. I noticed that pjsystest shows the sound device opened only with 1 channel, while recfile uses 2 channels. My ARM board has dual microphones. When I compiled recfile with only 1 channel it also stopped working. So I thought that might be the problem. However running pjsua with the --stereo option does not fix the problem. Is there a way to build the system to use 2 channels instead of specifying at runtime? The fact that --stereo didn't do anything is surprising, since the only difference between working recfile and non-working recfile was chaning NCHANNELS from 2 to 1. If anyone has any thoughts or has seen issues like this, I'd greatly appreciate any advice you have. Thanks! -Haomiao -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130211/8bd66fd0/attachment-0001.html>