>> Is it possible to use alsa instead of oss emulation with PJSUA? > > pjsip, or more precisely PortAudio in pjmedia, can support both alsa > and oss. If alsa-devel is present and detected during ./configure, > then it will be used by default. $ ./configure 2>&1 | tee configure.log ... checking alsa/version.h usability... yes checking alsa/version.h presence... yes checking for alsa/version.h... yes ... $ pjsip-apps/bin/pjsua-i686-pc-linux-gnu ... 16:52:05.102 pjsua_media.c Closing (null) sound playback device and (null) sound capture device 16:52:05.587 pasound.c PortAudio sound library shutting down.. 16:52:05.587 pasound.c PortAudio sound library shutting down.. ... $ ldd pjsip-apps/bin/pjsua-i686-pc-linux-gnu linux-gate.so.1 => (0xffffe000) libm.so.6 => /lib/libm.so.6 (0xb7ee8000) libpthread.so.0 => /lib/libpthread.so.0 (0xb7ed2000) libasound.so.2 => /usr/lib/libasound.so.2 (0xb7e0d000) libc.so.6 => /lib/libc.so.6 (0xb7ce7000) /lib/ld-linux.so.2 (0x80000000) libdl.so.2 => /lib/libdl.so.2 (0xb7ce2000) What's wrong?