Datasheet - pjsip/pjproject_docs GitHub Wiki

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)
- 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