baresip is an open source and freely distributed command-line software that uses the libre and librem libraries to provide Linux users with a modular and portable SIP (Session Initiation Protocol) User-Agent that supports video and audio.
The project has been designed from the offset to be a modular and minimalistic VoIP client that supports both IPv6 and IPv4 protocols, it is RFC compliant, robust, low on resources, fast and portable, supporting the TURN, ICE, STUN and NAT-PMP network address translation (NAT) traversal modules, the DTLS-SRTP, SRTP and ZRTP media encryption modules, and SIP, SDP, RTP and RTCP protocols.
Supports a wide variety of audio/video codes
At the moment, the program comes with support for a wide variety of audio codecs, including OPUS, AMR, Silk, BV32, Speex, Celt, G.711, L16, G.722, iLBC, G.722.1, GSM, G.726 and iSAC, as well as the H.264, H.263, VP8 and MPEG4 video codecs. Supported video output modules include OpenGL, X11, SDL/SDL2 and DirectFB.
In addition, the software includes support for various audio drivers, such as ALSA, GStreamer, OSS, Portaudi, Coreaudio, OpenSLES, Symbian MDA and Windows wave, support for various video sources, including the FFmpeg avformat, Video4Linux, Video4Linux2, X11 Grabber, as well as Mac OS X qtcapture and quicktime.
Getting started with baresip
Before attempting to install baresip on your GNU/Linux distribution using the tarball provided by Softpedia on the dedicated download section above, keep in mind that you must first acquire and install the libre and librem libraries.
Once the aforementioned libraries have been correctly installed on your Linux kernel-based operating system, you can download the latest baresip code from Softpedia or via its official website (see link below), save the archive somewhere on your computer and unpack it.
Open a terminal emulator, navigate to the location of the extracted archive files with the ‘cd’ command and execute the ‘make’ command to compile the program. After a successful compilation, you can install it system wide using the ‘make install’ command as root or the ‘sudo make install’ command as a privileged user.