Datasheet

PJSIP Datasheet

Operating Systems Supported

• Mac OS X
• Windows (32 and 64bit), including Windows 10
• Linux/uClinux
• Smartphones:
  • iOS
  • Android
  • Windows !Mobile/Windows CE
  • Windows Phone 10/Universal Windows Platform (UWP)
  • BlackBerry (BB10)
  • Symbian S60 3rd Edition and 5th Edition
• Community supported:
  • OpenBSD
  • FreeBSD
  • Solaris
  • MinGW
  • RTEMS

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
  • 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)
  • Reason header (RFC 3326, partially supported)
  • P-Header (RFC 3325, partially supported)
• SDP:
  • RFC 2327 (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)
  • Message summary/message waiting indication (MWI, RFC 3842)
• Compliance, best current practices:
  • Issues with Non-INVITE transaction (RFC 4320)
  • Issues with INVITE transaction (RFC 4321)
  • Multiple dialog usages (RFC 5057)
  • SIP torture messages (RFC 4475, tested when applicable)
  • SIP torture for IPv6 (RFC 5118)
  • Message Body Handling (RFC 5621. Partial compliance: multipart is supported, but Content-Disposition header is not handled)
  • The use of SIPS (RFC 5630. Partial compliance: SIPS is supported, but still make use of transport=tls parameter)

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
  • TCP allocations (RFC 6062)
• 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 4733/RFC 2833)
  • echo cancellation (WebRTC, Speex, suppressor, or native)
    • Third party acoustic echo cancellation (AEC)
      • Echo cancellation software from voice INTER connect
      • CANEC from DSP Algorithms
      • VQE from Wave Arts
      • bdIMAD from bdSound
      • TrueVoice from Limes Audio
      • Echo cancellation software from SoliCall
  • 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
• Audio conferencing (in client)
• Flexible media flow management
• Audio 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 third party libraries (may need additional licensing, please check each codec provider):
    • Opus codec (see ticket #1904)
    • Intel IPP:
      • AMR-NB, AMR-WB,
      • G.722, G.722.1,
      • G.723.1, G.726, G.728, G.729A,
    • SILK codec (see ticket #1586)
    • OpenCore AMR:
      • AMR-NB (see ticket #1388)
      • AMR-WB (see ticket #1608)
    • bcg729: G.729 (see ticket #2029)
  • 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), SRTP SDES (RFC 4568), and DTLS-SRTP (RFC 5763)
  • QoS (DSCP, WMM)
  • Symmetric RTP/RTCP (RFC 4961)
  • Multiplexing RTP and RTCP (rtcp-mux) (RFC 5671) (see ticket #2087)
  • Third Party
    • ZRTP
      • Zorg
      • ZRTP4PJ
• Audio devices:
  • native WMME (Windows, Windows Mobile)
  • native ALSA (Linux)
  • native CoreAudio (Mac OS X, iPhone) with support for native/hardware EC
  • OpenSL (Android)
  • 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
  • PortAudio (WMME, DirectSound, OSS, ALSA, CoreAudio, etc.)

Video Media

• Platforms:
  • Windows,
  • Linux,
  • Mac
  • iOS
  • Android
• Codecs:
  • H.263-1998 (ffmpeg)
  • H.264 (OpenH264, VideoToolbox (iOS and Mac), ffmpeg+x264)
  • VP8 (libvpx)
  • VP9 (libvpx)
• 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)
• Video conferencing (in client)
• Flexible media flow management