Hi, When Portaudio in PJSIP uses OSS instead of ALSA on linux, my program just hangs and consumes 100% cpu time. Does anyone else experience this? I have an strace of this happening right here: http://usr.cnix.ro/luci/strace.txt As you can see Portaudio keeps writing 00 bytes to /dev/dsp. For the record, ALSA works just fine. Ruud Klaver AG Projects