PJSIP Datasheet

Operating Systems Supported

• Windows
• Mac OS X
• Linux/uClinux
• Smartphones:
  • Windows Mobile/Windows !CE/Windows Phone
  • Symbian S60 3rd Edition and 5th Edition
  • iPhone OS/iOS (iPhone, iPad, iPod Touch) with iOS 4 background notification support
• Community supported:
  • OpenBSD
  • FreeBSD
  • Solaris
  • MinGW
  • RTEMS
  • Android

SIP Capabilities

• Base specs:
  • Core methods: <A HREF="​http://tools.ietf.org/html/rfc3261">RFC 3261</A>: INVITE, CANCEL, BYE, REGISTER, OPTIONS, INFO
  • Digest authentication (<A HREF="​http://tools.ietf.org/html/rfc2617">RFC 2617</A>)
• Transports:
  • UDP, TCP, TLS (server or mutual)
  • DNS SRV resolution (<A HREF="​http://tools.ietf.org/html/rfc3263">RFC 3263</A>)
  • IPv6 (UDP only)
  • QoS (DSCP, WMM)
• Routing/NAT:
  • rport (<A HREF="​http://tools.ietf.org/html/rfc3581">RFC 3581</A>)
  • Service-Route header (<A HREF="​http://tools.ietf.org/html/rfc3608">RFC 3608</A>)
  • SIP outbound for TCP/TLS (<A HREF="​http://tools.ietf.org/html/rfc5626">RFC 5626</A>)
  • Path header (with SIP outbound) (<A HREF="​http://tools.ietf.org/html/rfc3327">RFC 3327</A>)
• Call:
  • Offer/answer (<A HREF="​http://tools.ietf.org/html/rfc3264">RFC 3264</A>)
  • hold, unhold
  • redirection
  • transfer/REFER (attended and unattended):
    • Base (<A HREF="​http://tools.ietf.org/html/rfc3515">RFC 3515</A>)
    • replaces (<A HREF="​http://tools.ietf.org/html/rfc3891">RFC 3891</A>)
    • Referred-by (<A HREF="​http://tools.ietf.org/html/rfc3892">RFC 3892</A>)
  • sipfrag support (<A HREF="​http://tools.ietf.org/html/rfc3420">RFC 3420</A>)
  • norefersub (<A HREF="​http://tools.ietf.org/html/rfc4488">RFC 4488</A>)
  • UPDATE (<A HREF="​http://tools.ietf.org/html/rfc3311">RFC 3311</A>)
  • 100rel/PRACK (<A HREF="​http://tools.ietf.org/html/rfc3262">RFC 3262</A>)
  • tel: URI (<A HREF="​http://tools.ietf.org/html/rfc3966">RFC 3966</A>)
  • Session Timers (<A HREF="​http://tools.ietf.org/html/rfc4028">RFC 4028</A>)
• SDP:
  • <A HREF="​http://tools.ietf.org/html/rfc2337">RFC 2337</A> (obsoleted by <A HREF="​http://tools.ietf.org/html/rfc4566">RFC 4566</A>)
  • RTCP attribute (<A HREF="​http://tools.ietf.org/html/rfc3605">RFC 3605</A>)
  • IPv6 support (<A HREF="​http://tools.ietf.org/html/rfc3266">RFC 3266</A>)
• Multipart (<A HREF="​http://tools.ietf.org/html/rfc2046">RFC 2046</A>, <A HREF="​http://tools.ietf.org/html/rfc5621">RFC 5621</A>)
• Presence and IM:
  • Event framework (SUBSCRIBE, NOTIFY) (<A HREF="​http://tools.ietf.org/html/rfc3265">RFC 3265</A>)
  • Event publication (PUBLISH) (<A HREF="​http://tools.ietf.org/html/rfc3903">RFC 3903</A>)
  • MESSAGE (<A HREF="​http://tools.ietf.org/html/rfc3428">RFC 3428</A>)
  • typing indication (<A HREF="​http://tools.ietf.org/html/rfc3994">RFC 3994</A>)
  • pidf+xml (<A HREF="​http://tools.ietf.org/html/rfc3856">RFC 3856</A>, <A HREF="​http://tools.ietf.org/html/rfc3863">RFC 3863</A>)
  • xpidf+xml
  • RPID (subset) (<A HREF="​http://tools.ietf.org/html/rfc4480">RFC 4480</A>)
• Other extensions:
  • INFO (<A HREF="​http://tools.ietf.org/html/rfc2976">RFC 2976</A>)
  • AKA, AKA-v2 authentication (<A HREF="​http://tools.ietf.org/html/rfc3310">RFC 3310</A>, <A HREF="​http://tools.ietf.org/html/rfc4169">RFC 4169</A>)
  • ICE option tag (<A HREF="​http://tools.ietf.org/html/rfc5768">RFC 5768</A>)
• Compliance:
  • Issues with Non-INVITE transaction (<A HREF="​http://tools.ietf.org/html/rfc4320">RFC 4320</A>)
  • Issues with INVITE transaction (<A HREF="​http://tools.ietf.org/html/rfc4321">RFC 4321</A>)
  • Multiple dialog usages (<A HREF="​http://tools.ietf.org/html/rfc5057">RFC 5057</A>)

NAT Traversal

• STUN:
  • <A HREF="​http://tools.ietf.org/html/rfc5389">RFC 5389</A>
  • Some <A HREF="​http://tools.ietf.org/html/rfc3489">RFC 3489</A> compatibility
  • DNS SRV resolution
  • short/long term authentication
  • fingerprinting
• TURN:
  • <A HREF="​http://tools.ietf.org/html/rfc5766">RFC 5766</A>
  • DNS SRV resolution
  • UDP and TCP client connection
• ICE:
  • <A HREF="​http://tools.ietf.org/html/rfc5245">RFC 5245</A>
  • host, srflx, and relayed candidates
  • aggressive and regular nomination
  • ICE option tag (<A HREF="​http://tools.ietf.org/html/rfc5768">RFC 5768</A>)
• NAT type detection:
  • legacy <A HREF="​http://tools.ietf.org/html/rfc3489">RFC 3489</A>
• Other:
  • QoS support on sockets (DSCP, WMM)

Media/audio capabilities

• Core:
  • any clockrates
  • N-channels support
  • zero thread
• Base:
  • event (<A HREF="​http://tools.ietf.org/html/rfc2833">RFC 2833</A>)
  • echo cancellation (Speex, CANEC, suppressor, or native)
  • client conferencing
  • tone generation
  • file playback and recording
  • file playlist
  • 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 (<A HREF="​http://tools.ietf.org/html/rfc3550">RFC 3550</A>, <A HREF="​http://tools.ietf.org/html/rfc3551">RFC 3551</A>)
  • RTCP XR (subset, <A HREF="​http://tools.ietf.org/html/rfc3611">RFC 3611</A>)
  • UDP, STUN, ICE
  • IPv6 (UDP only)
  • SRTP (<A HREF="​http://tools.ietf.org/html/rfc3711">RFC 3711</A>) and SRTP SDES (<A HREF="​http://tools.ietf.org/html/rfc4568">RFC 4568</A>)
  • QoS (DSCP, WMM)
• 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

• Planned in 2.0