Hi, In fact I don't manage to have sound with my fedora 7. I have tried to bring solution but unsuccessfully. According my researches on Internet, it's a recurrent issue with fedora 7. My sound card is correctly detected, but no sound is played. I examined the pjsua code and put some flags to understand the real problem. I found that the process stops in the file thirdparty/portaudio/src/common/pa_front.c in the function definition PA_StartStream, in the line: result=PA_STREAM_INTERFACE(Stream)->Start(stream); There is no error but the process doesn't continue. Thanks for your help, C?line NGUYEN -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080429/99af4c20/attachment.html