pjsip Features and Datasheet

Operating Systems Supported

• Windows
• Mac OS X
• Linux/uClinux
• Smartphones:
  • iPhone OS/iOS (iPhone, iPad, iPod Touch)
  • Android
  • Windows Mobile/Windows CE/Windows Phone
    • Windows 10/UWP is under development
  • ​BlackBerry 10 (BB10)
  • Symbian S60 3rd Edition and 5th Edition
• Community supported:
  • OpenBSD
  • FreeBSD
  • Solaris
  • MinGW
  • RTEMS
  • Android

SIP Capabilities

• Base specs:
  • Core methods: RFC 3261: INVITE, CANCEL, BYE, REGISTER, OPTIONS, INFO
  • Digest authentication ( RFC 2617)
• Transports:
  • UDP, TCP, TLS (server or mutual)
  • DNS SRV resolution ( RFC 3263)
  • IPv6 (UDP only)
  • QoS (DSCP, WMM)
• Routing/NAT:
  • rport ( RFC 3581)
  • Service-Route header ( RFC 3608)
  • SIP outbound for TCP/TLS ( RFC 5626)
  • Path header (with SIP outbound) ( RFC 3327)
• Call:
  • Offer/answer ( RFC 3264)
  • hold, unhold
  • redirection
  • transfer/REFER (attended and unattended):
    • Base ( RFC 3515)
    • replaces ( RFC 3891)
    • Referred-by ( RFC 3892)
  • sipfrag support ( RFC 3420)
  • norefersub ( RFC 4488)
  • UPDATE ( RFC 3311)
  • 100rel/PRACK ( RFC 3262)
  • tel: URI ( RFC 3966)
  • Session Timers ( RFC 4028)
• SDP:
  • RFC 2337 (obsoleted by RFC 4566)
  • RTCP attribute ( RFC 3605)
  • IPv6 support ( RFC 3266)
• Multipart ( RFC 2046, RFC 5621)
• Presence and IM:
  • Event framework (SUBSCRIBE, NOTIFY) ( RFC 3265)
  • Event publication (PUBLISH) ( RFC 3903)
  • MESSAGE ( RFC 3428)
  • typing indication ( RFC 3994)
  • pidf+xml ( RFC 3856, RFC 3863)
  • xpidf+xml
  • RPID (subset) ( RFC 4480)
• Other extensions:
  • INFO ( RFC 2976)
  • AKA, AKA-v2 authentication ( RFC 3310, RFC 4169)
  • ICE option tag ( RFC 5768)
• Compliance:
  • Issues with Non-INVITE transaction ( RFC 4320)
  • Issues with INVITE transaction ( RFC 4321)
  • Multiple dialog usages ( RFC 5057)

NAT Traversal

• STUN:
  • RFC 5389
  • Some RFC 3489 compatibility
  • DNS SRV resolution
  • short/long term authentication
  • fingerprinting
• TURN:
  • RFC 5766
  • DNS SRV resolution
  • UDP and TCP client connection
• ICE:
  • RFC 5245
  • host, srflx, and relayed candidates
  • aggressive and regular nomination
  • ICE option tag ( RFC 5768)
• NAT type detection:
  • legacy RFC 3489
• Other:
  • QoS support on sockets (DSCP, WMM)

Media/audio capabilities

• Core:
  • any clockrates
  • N-channels support
  • zero thread
• Base:
  • DTMF ( RFC 2833)
  • echo cancellation (Speex, CANEC, suppressor, or native)
  • client conferencing
  • inband DTMF/tone generation
  • WAV file playback and recording
  • WAV file playlist
  • memory based playback and capture
  • adaptive jitter buffer
  • packet lost concealment
  • clock drift recovery
• Codecs:
  • Bundled:
    • Speex 8KHz, 16Khz, 32KHz
    • iLBC, GSM,
    • L16, G.711A/U (PCMA/PCMU),
    • G.722,
    • G.722.1 16KHz/32KHz (Siren7/Siren14, licensed from Polycom)
  • with Intel IPP library:
    • AMR-NB, AMR-WB,
    • G.722, G.722.1,
    • G.723.1, G.726, G.728, G.729A,
  • Hardware codecs:
    • on Nokia with APS/VAS-Direct: AMR-NB, G.729, iLBC, PCMA, PCMU
    • on iPhone: iLBC
• Transports:
  • RTP and RTCP with media statistic ( RFC 3550, RFC 3551)
  • RTCP XR (subset, RFC 3611)
  • UDP, STUN, ICE
  • IPv6 (UDP only)
  • SRTP ( RFC 3711) and SRTP SDES ( RFC 4568)
  • QoS (DSCP, WMM)
  • Symmetric RTP/RTCP ( RFC 4961)
• Audio devices:
  • native WMME (Windows, Windows Mobile)
  • native ALSA (Linux)
  • native Symbian MMF (Symbian/Nokia S60)
  • native APS (Nokia S60) with hardware EC, and APS-Direct to support hardware codecs
  • native VAS (Nokia S60) with hardware EC, and VAS-Direct to support hardware codecs
  • native CoreAudio (Mac OS X, iPhone) with support for native/hardware EC
  • PortAudio (WMME, DirectSound, OSS, ALSA, CoreAudio, etc.)

Video Media

Platforms:

• Windows
• Linux
• Mac
• iOS
• Android

• Codecs:
  • H.263-1998 (ffmpeg),
  • H.264 (ffmpeg+x264, OpenH264)
• Capture devices:
  • colorbar (all platforms)
  • DirectShow (Windows)
  • Video4Linux2 (Linux)
  • QuickTime (Mac OS X)
  • AVFoundation (iOS)
• Rendering devices:
  • SDL (Windows, Linux, and Mac OS X)
  • OpenGL ES or UIView (iOS)