baresip

Modular SIP useragent

A modular SIP user-agent with support for audio and video, and many IETF standards such as SIP, SDP, RTP/RTCP, STUN, TURN, and ICE. Supports both IPv4 and IPv6, and the following features. * Audio codecs: AMR, G.711, G.722, G.726, GSM, L16, MPA, OPUS. * Video codecs: H.263, H.264, H.265, MPEG4, VP8, VP9. * Audio drivers: Alsa, JACK, OSS, Portaudio, sndio. * Video sources: FFmpeg avformat, Video4Linux2, X11 Grabber. * Video output: SDL2, X11, DirectFB. * NAT Traversal: STUN, TURN, ICE, NATBD, NAT-PMP, PCP. * Media encryption: SRTP, DTLS-SRTP. * DNS Service Discovery: Avahi. * Telemetry messaging: MQTT. * Control interfaces: JSON-over-TCP.