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