Projects / baresip


baresip is a bare-bones SIP user agent. It supports SIP, SDP, RTP/RTCP, and STUN/TURN/ICE, and IPv4 and IPv6, and is RFC-compliant and has portable C89 and C99 source code. A modular plugin architecture provides stdio, cons, and evdev user interfaces, celt, g711, g722, gsm, ilbc, l16, and speex audio codecs, alsa, coreaudio, gst, portaudio, oss, winwav, and mda audio drivers, speex_pp, speex_aec, speex_resamp, and sndfile audio filters, the avcodec video codec, avformat, quicktime, qtcapture, v4l, and v4l2 video sources, sdl, opengl, and x11 video display drivers, and srtp media encoding.

Operating Systems

Recent releases

  •  23 Jan 2014 15:34

    Release Notes: This is a maintenance release with minor fixes in audio processing. The ALSA module has been fixed to support USB headsets. Minor bugs are also fixed in L16 and Portaudio modules. This release includes minor improvements to the new ZRTP module.

    •  07 Jan 2014 19:55

      Release Notes: This release adds support for ZRTP media encryption (through the new module called It also includes support for the LLVM clang compiler. Other improvements include a new logging framework, interop changes in OPUS codec, and audio quality improvements in the Android OpenSLES audio driver module.

      •  09 Dec 2013 13:16

        Release Notes: This is a maintenance release with various fixes in the baresip core and modules. It also includes support for showing RTP statistics after a call has been ended. New modules include dtls_srtp, aubridge, and vidbridge.

        •  22 Nov 2013 21:47

          Release Notes: This release adds support for an embedded HTTP server ( for user-interface, RFC 5506, RPM-spec file support, and an iLBC module update. It also includes various improvements and fixes.

          •  11 Oct 2013 18:35

            Release Notes: This release adds support for DirectFB video output, the Win32 input console, and the Win32 DirectShow video source, along with various improvements in audio/video handling and bugfixes and enhancements.

            Recent comments

            09 Jun 2012 07:26 alfredhe

            you must add path libX11.dylib, in baresip/modules/x11/ add:

            $(MOD)_LFLAGS += -L$(SYSROOT)/X11/lib -lX11 -lXext

            07 Jun 2012 15:55 nick777

            I have the same problem with X11 when building 0.4.1 Anything else that needs to be installed too before "make"?

            03 Apr 2012 14:05 majlotech

            I am trying to build Baresip on Mac OSx Lion and I am getting this error:
            ld: library not found for -lX11
            collect2: ld returned 1 exit status
            make: *** [] Error 1
            Can you please post what is the solution to this problem... (libre and librem are already built)...

            04 Aug 2011 15:19 lexa_f

            I registered in What sip provider I can use to test the INVITE command? Is it possible to see communication between the server and baresip in the logs? Thanks.

            01 Aug 2011 22:42 alfredhe

            incoming call is supported, please check if the inbound INVITE is arriving
            at the client. which SIP server and/or provider are you using? please contact
            me directly for assistance.



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