List of SIP software
Encyclopedia
This list of SIP software documents notable software applications which use Session Initiation Protocol
Session Initiation Protocol
The Session Initiation Protocol is an IETF-defined signaling protocol widely used for controlling communication sessions such as voice and video calls over Internet Protocol . The protocol can be used for creating, modifying and terminating two-party or multiparty sessions...

 (SIP) as a voice over IP
Voice over IP
Voice over Internet Protocol is a family of technologies, methodologies, communication protocols, and transmission techniques for the delivery of voice communications and multimedia sessions over Internet Protocol networks, such as the Internet...

 (VoIP) protocol.

Free and open source license

  • Asterisk
    Asterisk (PBX)
    Asterisk is a software implementation of a telephone private branch exchange ; it was created in 1999 by Mark Spencer of Digium. Like any PBX, it allows attached telephones to make calls to one another, and to connect to other telephone services including the public switched telephone network and...

  • Cipango
    Cipango (sip server)
    Cipango is a VoIP extension to the Jetty HTTP Servlets container . It is one of the three Open Source SIP Servlets container compliant with the latest SIP Servlets 1.1 standard . It also offers support of Diameter protocol.-External links:*...

     SipServlets 1.1 application server
  • FreeSWITCH
    Freeswitch
    FreeSWITCH is a free and open source communications software for the creation of voice and messaging products. It is licensed under the Mozilla Public License , a free software license...

  • Kamailio, maintaining OpenSER
    OpenSER
    OpenSER is a Session Initiation Protocol proxy server, call router, and user agent registration server used in Voice over Internet Protocol and instant messaging applications...

  • Mobicents
    Mobicents
    The is suitable for creating, deploying and managing converged services and applications integrating voice, video and data across a range of IP and legacy communications networks. It includes the following key modules:...

     Platform (JSLEE[2] 1.0 compliant and SIP Servlets 1.1 compliant application server)
  • Mysipswitch
    Mysipswitch
    MySIPSwitch is a Voice over IP open-source software under BSD licence and a free service.-MySIPSwitch:MySIPSwitch is an experimental stateful SIP Proxy server sponsored by Blue Face to allow the use of multiple supplier SIP accounts from a single SIP login...

  • OpenSER
    OpenSER
    OpenSER is a Session Initiation Protocol proxy server, call router, and user agent registration server used in Voice over Internet Protocol and instant messaging applications...

  • OpenSIPS
    OpenSIPS
    OpenSIPS is a fork of the OpenSER project, announced to the public on the 4th August 2008. The reason for this was conflict between the core developers. OpenSIPS concentrates on further development of the server. OpenSER maintenance will be done by the Kamailio project.-External links:*...

    , fork of OpenSER
    OpenSER
    OpenSER is a Session Initiation Protocol proxy server, call router, and user agent registration server used in Voice over Internet Protocol and instant messaging applications...

  • SailFin
    SailFin
    SailFin is an open-source Java application server project led by Sun Microsystems. It implements the JCP SIP Servlet 1.1 specification integrated with the open-source Java EE application server GlassFish....

  • SIP Express Router (SER)
  • sipX
    SipX
    sipXecs is an open source voice over IP telephony server. Its main feature is a software implementation of the Session Initiation Protocol , which makes it an IP based communications system . Featurewise, it is not unlike Asterisk, a very popular open source PBX, but the design of sipXecs deviates...

  • Yate
    Yate (telephony engine)
    Yate is an extensible, open-source telephony engine mainly focused on VoIP and PSTN....

  • YXA
    YXA
    Yxa is a program written in Erlang implementing a telephone private branch exchange was written by Magnus Ahltorp at Royal Institute of Technology in the end of 2002....

    , based on Erlang

Proprietary license

  • 3Com
    3Com
    3Com was a pioneering digital electronics manufacturer best known for its computer network infrastructure products. The company was co-founded in 1979 by Robert Metcalfe, Howard Charney, Bruce Borden, and Greg Shaw...

     VCX IP telephony module: back-to-back user agent SIP PBX
  • 3CX Phone System
    3CX Phone System
    3CX Phone System is a software based private branch exchange based on the SIP standard. It enables extensions to make calls via the public switched telephone network or via Voice over Internet Protocol services....

    , for Windows
  • Aastra 5000, 800, MX-ONE
  • Alcatel-Lucent
    Alcatel-Lucent
    Alcatel-Lucent is a global telecommunications corporation, headquartered in the 7th arrondissement of Paris, France. It provides telecommunications solutions to service providers, enterprises, and governments around the world, enabling these customers to deliver voice, data, and video services...

     5020 call session controller
  • Aricent
    Aricent
    Aricent Group is a global innovation and technology services company. The company develops software and provides technology services to application, infrastructure, and service providers with operations in 19 countries worldwide....

     SIP UA stack, B2BUA, proxy
  • Avaya Application Server 5300 (AS5300), JITC certified ASSIP VoIP
  • Avaya Communication Manager SIP Enablement Services
  • BEA Systems
    BEA Systems
    BEA Systems, Inc. specialized in enterprise infrastructure software products known as "middleware", which connect software applications to databases and was acquired by Oracle Corporation on April 29, 2008.- History :...

     WebLogic SIP Server
  • Brekeke SIP Server
    Brekeke SIP Server
    Brekeke SIP Server is a SIP-based SIP Proxy Server and Registrar. This software was previously known as OnDO SIP Server from 2003 to 2006. Brekeke Software, Inc. released the second version of the software in 2007 and changed its name to Brekeke SIP Server. It authenticates and registers user...

    , SIP proxy, SIP registrar, SIP NAT, TCP/UDP
  • Cisco
    Cisco
    Cisco may refer to:Companies:*Cisco Systems, a computer networking company* Certis CISCO, corporatised entity of the former Commercial and Industrial Security Corporation in Singapore...

     SIP Proxy Server, Cisco unified border element (CUBE)
  • CommuniGate Pro
    CommuniGate Pro
    CommuniGate Pro is the a server software product that provides IP based, Unified Communications services, including e-mail, Voice over IP, IM and GroupWare capabilities....

    , virtualized PBX for IP Centrex hosting, voicemail services, self-care, ...
  • Comverse Technology
    Comverse Technology
    Comverse Technology, Inc. , originally founded in Israel, is a technology company located in Woodbury, New York in the United States, that develops and markets telecommunications software. The company focuses on providing value-added services to telecommunication service providers, in particular to...

     softswitch, media applications, SIP registrars
  • Interactive Intelligence Windows-based IP PBX for small, medium and enterprise organizations
  • Iskratel
    Iskratel
    -About the company:Iskratel is a company in the integrated telecommunications solutions market. Iskratel Group has almost 1400 employees, 450 of which work in affiliated companies in 20 countries.-Main markets and customers:...

     SI3000 CS softswitch, signaling media gateways, application servers
  • MERA Systems
    MERA Systems
    ALOE Systems is an international developer of VoIP softswitches, session border controllers and IP-based platforms for VoIP carriers and service providers...

     VoIP softswitches with sbc, H.323/SIP proxy
  • Microsoft Office Communications Server 2007, R2 version since February 2009
  • Mitel
    Mitel
    Mitel Networks, is a high-tech company providing unified communications solutions for business. The company previously produced TDM PBX systems and applications but after a change in ownership in 2001 now focuses almost entirely on Voice-over-IP products.Mitel is headquartered in Ottawa,...

     Communications Director
  • NEC
    NEC
    , a Japanese multinational IT company, has its headquarters in Minato, Tokyo, Japan. NEC, part of the Sumitomo Group, provides information technology and network solutions to business enterprises, communications services providers and government....

     SV7000 back-to-back user agent SIP PBX
  • NEC
    NEC
    , a Japanese multinational IT company, has its headquarters in Minato, Tokyo, Japan. NEC, part of the Sumitomo Group, provides information technology and network solutions to business enterprises, communications services providers and government....

     UNIVERGE Sphericall Communications Services Platform
  • Nokia Siemens Networks
    Nokia Siemens Networks
    Nokia Siemens Networks is a global data networking and telecommunications equipment company headquartered in Espoo, Finland. It is a joint venture between Nokia of Finland and Siemens of Germany...

     hiQ8000
  • Nortel
    Nortel
    Nortel Networks Corporation, formerly known as Northern Telecom Limited and sometimes known simply as Nortel, was a multinational telecommunications equipment manufacturer headquartered in Mississauga, Ontario, Canada...

     SCS500
  • Nortel
    Nortel
    Nortel Networks Corporation, formerly known as Northern Telecom Limited and sometimes known simply as Nortel, was a multinational telecommunications equipment manufacturer headquartered in Mississauga, Ontario, Canada...

     SIP Multimedia Communication Server 5200
  • Objectworld
    Objectworld Communications
    Objectworld Communications Corp., formerly ObjectWorld Inc, was a privately held company, provides unified communications software to small- and medium-sized businesses. Objectworld was acquired by Huntsville, Alabama based ADTRAN Inc...

     UC Server
  • Oracle
    Oracle Corporation
    Oracle Corporation is an American multinational computer technology corporation that specializes in developing and marketing hardware systems and enterprise software products – particularly database management systems...

     Communications Converged Application Server (OCCAS)
  • pbxnsip
    Pbxnsip
    Pbxnsip is a software implementation of a telephone private branch exchange produced by a company of the same name. Like any PBX, it allows attached telephones to make calls to one another, and to connect to other telephone services including the public switched telephone network and Voice over...

     IP PBX for small to medium sized organizations, for Windows, Linux, FreeBSD & Mac OS
  • RADVision SIP Server Platform source-code B2BUA, Presence, ...
  • Revation LinkLive
    Revation LinkLive
    The Revation LinkLive Unified Communications Server or LinkLive UCS in telecommunication and computer networking is a commercial closed-source Unified Communications system based on SIP-SIMPLE by Revation Systems...

     SIP Unified Communications Server
  • ShoreTel
    ShoreTel
    ShoreTel is a company based in Sunnyvale, CA. They are a provider of commercial, closed-source VoIP products. Current implementations of ShoreTel systems include telephone handsets, as well as voicemail servers, switching hardware, analog phone outputs, and other telecommunications-related...

     IP phone systems with unified communications and contact center built in
  • Siemens
    Siemens
    Siemens may refer toSiemens, a German family name carried by generations of telecommunications industrialists, including:* Werner von Siemens , inventor, founder of Siemens AG...

     OpenScape Voice, Hipath 8000 SIP softswitch, mediaserver, ... (SIP)
  • Snom
    Snom
    snom Technology AG is a German company which manufactures Voice over Internet Protocol telephones, based on the IETF standard Session Initiation Protocol...

     Snom One free/blue/yellow (SIP)
  • Speedflow Communications
    Speedflow Communications
    Speedflow Communications is an international telecommunication company which is a VoIP provider and software products developer in VoIP business.-History:The telecommunication company Speedflow Communications was founded in February 2004 as a VoIP provider...

     VoIP class 4/5 softswitches with integated billing, transcoding, SIP-H.323 converter.
  • Sun Microsystems
    Sun Microsystems
    Sun Microsystems, Inc. was a company that sold :computers, computer components, :computer software, and :information technology services. Sun was founded on February 24, 1982...

     Sun GlassFish Communication Server
  • Tadiran Telecom
    Tadiran Telecom
    Tadiran Telecom Ltd is a telecommunications company which offers enterprises complete converged communications solutions that support voice, data, video and advanced applications. It is represented by a global network of more than 200 distributors and affiliates in 40 countries.The corporate...

     coral Ipx family & Coral Sea softswitch
  • Tandberg
    Tandberg
    This article is about the video-conferencing vendor, a Cisco company. Other companies with the same name such as Tandberg Television or Tandberg Data for data storage: see here and here...

     Video Communication Server - SIP application server, media server and H.323 gateway
  • Unison
    Unison (unified communications software)
    Unison is collaboration software aimed at small and medium businesses. It was developed by Unison Technologies, Inc., of New York City, which promotes the software as an alternative to consumer communications tools...

     Unified communications software
  • Zultys
    Zultys
    Zultys is a manufacturer of Voice-over-IP equipment for Small to Medium sized Businesses , with corporate headquarters in Sunnyvale, California...

     MX250/MX30 IP PBXs for SMB and enterprise

Free and open source license

  • Blink
    Blink (software)
    Blink is a SIP client. Blink is distributed as free software under version 3 of the GPL license.The application is written in Python and Cocoa, a Qt port for Windows and Linux is also available...

    , a SIP client featuring IM, File Transfer and Desktop Sharing for MacOSX, Windows and Linux, GPL
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

  • Ekiga
    Ekiga
    Ekiga /i k ai g a/ is a VoIP and video conferencing application for GNOME and Windows. It is distributed as free software under the terms of the GNU General Public License. It was the default VoIP client in Ubuntu until October 2009, when it was replaced by Empathy...

    , formerly named GnomeMeeting, GPL
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

  • Empathy
    Empathy (software)
    Empathy is an instant messaging client which supports text, voice, video, file transfers, and inter-application communication over various IM protocols....

    , using GTK+
    GTK+
    GTK+ is a cross-platform widget toolkit for creating graphical user interfaces. It is licensed under the terms of the GNU LGPL, allowing both free and proprietary software to use it. It is one of the most popular toolkits for the X Window System, along with Qt.The name GTK+ originates from GTK;...

     libraries and Telepathy framework, GPL
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

  • GreenJ, using Qt
    QT
    - Units and measurements :* Quart, a measure of volume in traditional systems of units* Quarter, a unit of mass in Imperial units, equal to 2 stones or a quarter of a long hundredweight; one quarter = 12.70058636 kg* QT interval, a measurement used in cardiology...

     and PJSIP for developing web-application based Softphones, for Linux
    Linux
    Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...

     and Windows; GPLv3
  • Jitsi, a Java
    Java (programming language)
    Java is a programming language originally developed by James Gosling at Sun Microsystems and released in 1995 as a core component of Sun Microsystems' Java platform. The language derives much of its syntax from C and C++ but has a simpler object model and fewer low-level facilities...

     VoIP and Instant Messaging client with ZRTP
    ZRTP
    ZRTP is a cryptographic key-agreement protocol to negotiate the keys for encryption between two end points in a Voice over Internet Protocol phone telephony call based on the Real-time Transport Protocol. It uses Diffie-Hellman key exchange and the Secure Real-time Transport Protocol for...

     encryption, for Linux
    Linux
    Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...

    , Mac OS X
    Mac OS X
    Mac OS X is a series of Unix-based operating systems and graphical user interfaces developed, marketed, and sold by Apple Inc. Since 2002, has been included with all new Macintosh computer systems...

    , Windows
    Microsoft Windows
    Microsoft Windows is a series of operating systems produced by Microsoft.Microsoft introduced an operating environment named Windows on November 20, 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces . Microsoft Windows came to dominate the world's personal...

    ; LGPL
  • KPhone
    KPhone
    KPhone is a SIP User Agent for Linux. It implements the functionality of a VoIP Softphone but is not restricted to this. Licensed under the GNU General Public License, KPhone is free software. KPhone is written in C++ and uses Qt.-Application:...

    , using Qt libraries, GPL
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

    , for Linux
  • Linphone
    Linphone
    Linphone is a VoIP application available on PCs running Linux or Windows, Apple computers running Mac OS X, and Android and iPhone mobile phones. It uses the Session Initiation Protocol for communication and is licensed under the GNU General Public License. Linphone uses GTK+ for GUI and on Linux...

    , with a core/UI separation, the GUI is using GTK+
    GTK+
    GTK+ is a cross-platform widget toolkit for creating graphical user interfaces. It is licensed under the terms of the GNU LGPL, allowing both free and proprietary software to use it. It is one of the most popular toolkits for the X Window System, along with Qt.The name GTK+ originates from GTK;...

     libraries, for Linux, Mac OS X, Windows, and mobile phones (Android, BlackBerry, iPhone)
  • MicroSIP
    MicroSIP
    MicroSIP is a portable SIP softphone based on the PJSIP stack available for Microsoft Windows operating systems. It facilitates high quality VoIP calls based on the open SIP protocol....

    , lightweight softphone, using PJSIP stack, for Windows
  • PhoneGaim, based on Pidgin
    Pidgin (software)
    Pidgin is an open-source multi-platform instant messaging client, based on a library named libpurple. Libpurple has support for many commonly used instant messaging protocols, allowing the user to log into various services from one application.The number of Pidgin users was estimated to be over 3...

    , does not work with new accounts after Google acquired Gizmo5
  • QuteCom, formerly named OpenWengo, using Qt libraries, GPL
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

  • SFLphone
    SFLphone
    SFLphone is SIP/IAX2 compatible softphone for Linux. SFLphone is free software released under the GNU General Public License. Packages are available for all major distributions including Debian, openSUSE, Fedora, Mandriva and the latest Ubuntu releases....

    , with GTK+
    GTK+
    GTK+ is a cross-platform widget toolkit for creating graphical user interfaces. It is licensed under the terms of the GNU LGPL, allowing both free and proprietary software to use it. It is one of the most popular toolkits for the X Window System, along with Qt.The name GTK+ originates from GTK;...

     GUI, GPL
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

    , also supports IAX2 protocol
  • Telephone
    Telephone (application)
    Telephone is a softphone for Mac OS X. It uses Session Initiation Protocol for communication. Telephone is distributed as free software under a variety of licenses.- Audio codecs :* G.711 family codec ;...

    , Mac OS X softphone written in Cocoa
    Cocoa (API)
    Cocoa is Apple's native object-oriented application programming interface for the Mac OS X operating system and—along with the Cocoa Touch extension for gesture recognition and animation—for applications for the iOS operating system, used on Apple devices such as the iPhone, the iPod Touch, and...

    /Objective-C
    Objective-C
    Objective-C is a reflective, object-oriented programming language that adds Smalltalk-style messaging to the C programming language.Today, it is used primarily on Apple's Mac OS X and iOS: two environments derived from the OpenStep standard, though not compliant with it...

  • Twinkle
    Twinkle (software)
    Twinkle is a free and open source software application for Voice over Internet Protocol voice communications in IP networks, such as the Internet. It is designed for GNU/Linux operating systems and uses the Qt toolkit for its graphical user interface. For call signaling it employs the Session...

    , using Qt libraries, GPL
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

  • Yate client
    Yate (telephony engine)
    Yate is an extensible, open-source telephony engine mainly focused on VoIP and PSTN....

    , using Qt libraries, GPL
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....


Proprietary license

  • Bria from CounterPath Corporation
    CounterPath Corporation
    CounterPath Corporation is a provider of desktop and mobile VoIP software products and solutions. Headquartered in Vancouver, British Columbia, CounterPath has 71 employees and annual revenue of USD $11 Million as of 2011...

     for Windows, Mac OS X, Linux. Voice: G.711
    G.711
    G.711 is an ITU-T standard for audio companding. It is primarily used in telephony. The standard was released for usage in 1972. Its formal name is Pulse code modulation of voice frequencies. It is required standard in many technologies, for example in H.320 and H.323 specifications. It can also...

    , G.722
    G.722
    G.722 is a ITU-T standard 7 kHz wideband speech codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM ....

    , G.729
    G.729
    G.729 is an audio data compression algorithm for voice that compresses digital voice in packets of 10 milliseconds duration. It is officially described as Coding of speech at 8 kbit/s using conjugate-structure algebraic code-excited linear prediction .Because of its low bandwidth requirements,...

    , G.726
    G.726
    G.726 is an ITU-T ADPCM speech codec standard covering the transmission of voice at rates of 16, 24, 32, and 40 kbit/s. It was introduced to supersede both G.721, which covered ADPCM at 32 kbit/s, and G.723, which described ADPCM for 24 and 40 kbit/s. G.726 also introduced a new...

    , GSM, iLBC
    ILBC
    Internet Low Bitrate Codec is an open source royalty-free narrowband speech codec, developed by Global IP Solutions formerly Global IP Sound . It was formerly licensed as a freeware with limited commercial use, but since 2011 it is available under an open source license as a part of the open...

    , Speex
    Speex
    Speex is a patent-free audio compression format designed for speech and also a free software speech codec that may be used on VoIP applications and podcasts. It is based on the CELP speech coding algorithm. Speex claims to be free of any patent restrictions and is licensed under the revised BSD...

    ; Video: H.263
    H.263
    H.263 is a video compression standard originally designed as a low-bitrate compressed format for videoconferencing. It was developed by the ITU-T Video Coding Experts Group in a project ending in 1995/1996 as one member of the H.26x family of video coding standards in the domain of the ITU-T.H.263...

    , H.263+, H.264
  • eyeBeam
    EyeBeam (software)
    eyeBeam is a proprietary VoIP softphone for Windows that uses Session Initiation Protocol to facilitate voice, video conferencing and instant messaging. eyeBeam is developed by CounterPath Corporation, a Vancouver based software company. eyeBeam was launched on September 13, 2004 for Windows as the...

     from CounterPath Corporation
    CounterPath Corporation
    CounterPath Corporation is a provider of desktop and mobile VoIP software products and solutions. Headquartered in Vancouver, British Columbia, CounterPath has 71 employees and annual revenue of USD $11 Million as of 2011...

     for Windows
  • LifeSize
    LifeSize
    LifeSize, a division of Logitech, is a video and audio communications company that provides high definition video conferencing endpoints and accessories, infrastructure products and a cloud-based video collaboration platform. LifeSize's worldwide headquarters is located in Austin, Texas...

     Desktop, for Windows
  • PhonerLite
    PhonerLite
    -Description:Phoner and PhonerLite are softphone applications for Windows operating systems available as freeware. Phoner is a multiprotocol telephony application supporting telephony via CAPI, TAPI and VoIP, while PhonerLite provides a specialized and optimized user interface for VoIP only...

    , for Windows, Voice: G.711
    G.711
    G.711 is an ITU-T standard for audio companding. It is primarily used in telephony. The standard was released for usage in 1972. Its formal name is Pulse code modulation of voice frequencies. It is required standard in many technologies, for example in H.320 and H.323 specifications. It can also...

    , G.722
    G.722
    G.722 is a ITU-T standard 7 kHz wideband speech codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM ....

    , G.726
    G.726
    G.726 is an ITU-T ADPCM speech codec standard covering the transmission of voice at rates of 16, 24, 32, and 40 kbit/s. It was introduced to supersede both G.721, which covered ADPCM at 32 kbit/s, and G.723, which described ADPCM for 24 and 40 kbit/s. G.726 also introduced a new...

    , GSM, iLBC
    ILBC
    Internet Low Bitrate Codec is an open source royalty-free narrowband speech codec, developed by Global IP Solutions formerly Global IP Sound . It was formerly licensed as a freeware with limited commercial use, but since 2011 it is available under an open source license as a part of the open...

    , Speex
    Speex
    Speex is a patent-free audio compression format designed for speech and also a free software speech codec that may be used on VoIP applications and podcasts. It is based on the CELP speech coding algorithm. Speex claims to be free of any patent restrictions and is licensed under the revised BSD...

    , Opus
    Opus (codec)
    Opus is a low-delay wideband codec intended for applications such as VoIP that will eventually be royalty-free. Opus incorporates technology from the speech-oriented SILK codec and the low-latency CELT codec...

    ; security: TLS
    Transport Layer Security
    Transport Layer Security and its predecessor, Secure Sockets Layer , are cryptographic protocols that provide communication security over the Internet...

    , SRTP
    SRTP
    In Communications:* Secure Real-time Transport Protocol, security profile for Real-time Transport Protocol* Service Request Transport Protocol GE-Fanuc Automation Protocol for Programmable logic controller use.* Student Research Training Program...

    , ZRTP
    ZRTP
    ZRTP is a cryptographic key-agreement protocol to negotiate the keys for encryption between two end points in a Voice over Internet Protocol phone telephony call based on the Real-time Transport Protocol. It uses Diffie-Hellman key exchange and the Secure Real-time Transport Protocol for...

  • Polycom
    Polycom
    Polycom is a multinational corporation with approximately 3,200 employees worldwide and an annual revenue of approximately $1.2 billion in 2010. The company manufactures and sells telepresence and voice communications solutions.-Company History 1990:...

     PVX, for Windows. Voice: G.711
    G.711
    G.711 is an ITU-T standard for audio companding. It is primarily used in telephony. The standard was released for usage in 1972. Its formal name is Pulse code modulation of voice frequencies. It is required standard in many technologies, for example in H.320 and H.323 specifications. It can also...

    , G.722
    G.722
    G.722 is a ITU-T standard 7 kHz wideband speech codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM ....

    , G.722.1, G.728
    G.728
    G.728 is an ITU-T standard for speech coding operating at 16 kbit/s. It is officially described as Coding of speech at 16 kbit/s using low-delay code excited linear prediction....

    , G.729A
    G.729
    G.729 is an audio data compression algorithm for voice that compresses digital voice in packets of 10 milliseconds duration. It is officially described as Coding of speech at 8 kbit/s using conjugate-structure algebraic code-excited linear prediction .Because of its low bandwidth requirements,...

    , Siren Codec
    Siren Codec
    Siren is a family of patented, transform-based, wideband audio codecs developed and licensed by PictureTel Corporation . There are three Siren codecs: Siren 7, Siren 14 and Siren 22....

    ; Video: H.261
    H.261
    H.261 is a ITU-T video coding standard, ratified in November 1988. It is the first member of the H.26x family of video coding standards in the domain of the ITU-T Video Coding Experts Group , and was the first video codec that was useful in practical terms.H.261 was originally designed for...

    , H.263
    H.263
    H.263 is a video compression standard originally designed as a low-bitrate compressed format for videoconferencing. It was developed by the ITU-T Video Coding Experts Group in a project ending in 1995/1996 as one member of the H.26x family of video coding standards in the domain of the ITU-T.H.263...

    , H.264; Data: T.120
    T.120
    T.120 is an ITU-T recommendation that describes a series of communication and application protocols and services that provide support for real-time, multipoint data communications...

    , People+ Content, H.239
    H.239
    H.239 is an ITU-T recommendation from the H.32x Multimedia Communications macrofamily of standards for multimedia communications over various networks....

    , H.323 Annex Q far-end camera control
  • Revation Communicator
    Revation Communicator
    Revation Communicator, previously called CommunicatorLive is a SIP-based User Agent client application that provides secure, real-time, unified communications and collaboration for enterprises and contact centers. The capabilities include presence information, instant messaging, web conferencing,...

    , for Windows
  • SightSpeed
    SightSpeed
    SightSpeed is a videoconferencing company, supplying VoIP and instant messaging solutions for Microsoft Windows and Apple Macintosh operating systems. The service allows people to make video calls, computer-to-computer voice calls, and calls to regular telephones, with free and paid versions.In...

     for Windows and Mac OS X. G.711
    G.711
    G.711 is an ITU-T standard for audio companding. It is primarily used in telephony. The standard was released for usage in 1972. Its formal name is Pulse code modulation of voice frequencies. It is required standard in many technologies, for example in H.320 and H.323 specifications. It can also...

    , iLBC
    ILBC
    Internet Low Bitrate Codec is an open source royalty-free narrowband speech codec, developed by Global IP Solutions formerly Global IP Sound . It was formerly licensed as a freeware with limited commercial use, but since 2011 it is available under an open source license as a part of the open...

    , Speex
    Speex
    Speex is a patent-free audio compression format designed for speech and also a free software speech codec that may be used on VoIP applications and podcasts. It is based on the CELP speech coding algorithm. Speex claims to be free of any patent restrictions and is licensed under the revised BSD...

     and H.263
    H.263
    H.263 is a video compression standard originally designed as a low-bitrate compressed format for videoconferencing. It was developed by the ITU-T Video Coding Experts Group in a project ending in 1995/1996 as one member of the H.26x family of video coding standards in the domain of the ITU-T.H.263...

     codecs
  • Windows Messenger
    Windows Messenger
    Windows Messenger is a client by Microsoft that is included in the Windows XP operating system. Designed for use by corporate users as well as home users, it was originally created as a streamlined and integrated version of MSN Messenger...

     versions 4 and 5 (not to be confused with Windows Live Messenger
    Windows Live Messenger
    Windows Live Messenger is an instant messaging client created by Microsoft that is currently designed to work with Windows XP , Windows Vista, Windows 7, Windows Mobile, Windows CE, Xbox 360, Blackberry OS, iOS, Java ME, S60 on Symbian OS 9.x and Zune HD...

     or MSN Messenger which do not support SIP)
  • X-Lite
    X-Lite
    X-Lite is a proprietary freeware VoIP soft phone that uses the Session Initiation Protocol. X-Lite is developed by CounterPath Corporation, a Vancouver based software company.In September 2010, CounterPath released X-Lite 4.0...

     from CounterPath Corporation
    CounterPath Corporation
    CounterPath Corporation is a provider of desktop and mobile VoIP software products and solutions. Headquartered in Vancouver, British Columbia, CounterPath has 71 employees and annual revenue of USD $11 Million as of 2011...

    , for Windows, Mac OS X

Free and open source license

  • Sipdroid
    Sipdroid
    Sipdroid is a voice over IP application for the Android operating system using the Session Initiation Protocol.Sipdroid is open source free software released under the GNU General Public License.-Features:...

     for Android, GPL v3
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

  • Linphone
    Linphone
    Linphone is a VoIP application available on PCs running Linux or Windows, Apple computers running Mac OS X, and Android and iPhone mobile phones. It uses the Session Initiation Protocol for communication and is licensed under the GNU General Public License. Linphone uses GTK+ for GUI and on Linux...

     for Android, BlackBerry, iPhone; GPL v2
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

  • CSipSimple
    CSipSimple
    CSipSimple is a Voice over Internet Protocol application for Google Android operating system using the SIP.It is open source and free software released under the GNU General Public License...

     for Android, GPL v3
    GNU General Public License
    The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....


Proprietary license

  • Bria Android Edition from CounterPath Corporation
    CounterPath Corporation
    CounterPath Corporation is a provider of desktop and mobile VoIP software products and solutions. Headquartered in Vancouver, British Columbia, CounterPath has 71 employees and annual revenue of USD $11 Million as of 2011...

    . Voice: G.711
    G.711
    G.711 is an ITU-T standard for audio companding. It is primarily used in telephony. The standard was released for usage in 1972. Its formal name is Pulse code modulation of voice frequencies. It is required standard in many technologies, for example in H.320 and H.323 specifications. It can also...

    , G.722
    G.722
    G.722 is a ITU-T standard 7 kHz wideband speech codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM ....

    , iLBC
    ILBC
    Internet Low Bitrate Codec is an open source royalty-free narrowband speech codec, developed by Global IP Solutions formerly Global IP Sound . It was formerly licensed as a freeware with limited commercial use, but since 2011 it is available under an open source license as a part of the open...

    , GSM, SILK
    Silk (codec)
    SILK is an audio compression format and audio codec used by Skype. It is developed by Skype Limited. SILK is a replacement for the SVOPC codec.The SILK codec was a separate development branch from SVOPC and it has been under development for over 3 years....

    , option to purchase G.729
    G.729
    G.729 is an audio data compression algorithm for voice that compresses digital voice in packets of 10 milliseconds duration. It is officially described as Coding of speech at 8 kbit/s using conjugate-structure algebraic code-excited linear prediction .Because of its low bandwidth requirements,...

  • Bria iPad Edition from CounterPath Corporation
    CounterPath Corporation
    CounterPath Corporation is a provider of desktop and mobile VoIP software products and solutions. Headquartered in Vancouver, British Columbia, CounterPath has 71 employees and annual revenue of USD $11 Million as of 2011...

    . Voice: G.711
    G.711
    G.711 is an ITU-T standard for audio companding. It is primarily used in telephony. The standard was released for usage in 1972. Its formal name is Pulse code modulation of voice frequencies. It is required standard in many technologies, for example in H.320 and H.323 specifications. It can also...

    , G.722
    G.722
    G.722 is a ITU-T standard 7 kHz wideband speech codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM ....

    , iLBC
    ILBC
    Internet Low Bitrate Codec is an open source royalty-free narrowband speech codec, developed by Global IP Solutions formerly Global IP Sound . It was formerly licensed as a freeware with limited commercial use, but since 2011 it is available under an open source license as a part of the open...

    , GSM, SILK
    Silk (codec)
    SILK is an audio compression format and audio codec used by Skype. It is developed by Skype Limited. SILK is a replacement for the SVOPC codec.The SILK codec was a separate development branch from SVOPC and it has been under development for over 3 years....

    , option to purchase G.729
    G.729
    G.729 is an audio data compression algorithm for voice that compresses digital voice in packets of 10 milliseconds duration. It is officially described as Coding of speech at 8 kbit/s using conjugate-structure algebraic code-excited linear prediction .Because of its low bandwidth requirements,...

  • Bria iPhone Edition from CounterPath Corporation
    CounterPath Corporation
    CounterPath Corporation is a provider of desktop and mobile VoIP software products and solutions. Headquartered in Vancouver, British Columbia, CounterPath has 71 employees and annual revenue of USD $11 Million as of 2011...

    . Voice: G.711
    G.711
    G.711 is an ITU-T standard for audio companding. It is primarily used in telephony. The standard was released for usage in 1972. Its formal name is Pulse code modulation of voice frequencies. It is required standard in many technologies, for example in H.320 and H.323 specifications. It can also...

    , G.722
    G.722
    G.722 is a ITU-T standard 7 kHz wideband speech codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM ....

    , iLBC
    ILBC
    Internet Low Bitrate Codec is an open source royalty-free narrowband speech codec, developed by Global IP Solutions formerly Global IP Sound . It was formerly licensed as a freeware with limited commercial use, but since 2011 it is available under an open source license as a part of the open...

    , GSM, SILK
    Silk (codec)
    SILK is an audio compression format and audio codec used by Skype. It is developed by Skype Limited. SILK is a replacement for the SVOPC codec.The SILK codec was a separate development branch from SVOPC and it has been under development for over 3 years....

    , option to purchase G.729
    G.729
    G.729 is an audio data compression algorithm for voice that compresses digital voice in packets of 10 milliseconds duration. It is officially described as Coding of speech at 8 kbit/s using conjugate-structure algebraic code-excited linear prediction .Because of its low bandwidth requirements,...


Test tools

  • Mu Dynamics
    Mu Dynamics
    Mu Dynamics is an American private venture-funded company that makes hardware and software to test network services, to quantify their product's or service's reliability, availability and security.-Products and services:...

    : commercial SIP-VoIP, RTSP-IPTV Triple Play service assurance platform
  • Codenomicon
    Codenomicon
    Codenomicon is a private company founded in late 2001, and develops robustness testing tools for manufacturers, service providers, government/defense and enterprise customers. The company has raised Venture money mid 2000's and and has been profitable since 2008, with more than 40% growth in...

     Defensics: commercial test automation framework
  • PROTOS Test Suite SIP: SIP fuzzer by the University of Oulu
    University of Oulu
    The University of Oulu is one of the largest universities in Finland, located in the city of Oulu. It was founded on July 8, 1958. The university has around 16,000 students and 3,000 staff...

     (Finland
    Finland
    Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

    )

Enabled firewalls

  • Check Point
    Check Point
    Check Point Software Technologies Ltd. is a global provider of IT security solutions. Best known for its firewall and VPN products, Check Point first pioneered the industry with FireWall-1 and its patented stateful inspection technology...

     VPN-1 firewalls, include complete SIP support for multiple vendors
  • Intertex
    Intertex
    Intertex was founded in 1982 by Karl-Erik Ståhl. The company design and manufactures various types of modems and ADSL modems with built-in firewall and router. The modems are also sold under the brand SurfinBird.-External links:* - Official site...

     SIP transparent routers, firewalls and ADSL modems, for broadband deployments and SOHO
    Small office/home office
    Small office/home office, or SOHO, refers to the category of business or cottage industry which involves from 1 to 10 workers. SOHO can also stand for single office/home office....

     market
  • Ingate
    Ingate Systems
    Ingate Systems AB is a company producing a number of firewall products, specializing on support for the SIP Protocol. The company was founded by Cendio Systems, a Swedish Linux-company and Intertex, a modem manufacturer....

     SIP transparent enterprise firewalls and SIParators, enables global SIP communication on enterprise LANs
  • Cisco PIX
    Cisco PIX
    Cisco PIX is a popular IP firewall and network address translation appliance. It was one of the first products in this market segment....

    /ASA firewalls include complete SIP support
  • The firewall feature in Cisco IOS
    Cisco IOS
    Cisco IOS is the software used on the vast majority of Cisco Systems routers and current Cisco network switches...

     includes complete SIP support
  • Secure Computing
    Secure Computing
    Secure Computing Corporation, or SCC, was a public company that developed and sold computer security appliances and hosted services to protect users and data...

    , SnapGear firewall includes siproxd SIP proxy, Sidewinder 7 firewall includes a SIP proxy
  • SonicWall
    SonicWALL
    SonicWALL is a private company headquartered in San Jose, CA. It sells a range of internet appliances primarily directed at content control and network security. These include devices providing services for network firewalls, UTMs , VPNs , backup and recovery, and anti-spam for email...

    , supports SIP
  • D-Link
    D-Link
    D-Link Corporation was founded in June 1986 in Taipei as Datex Systems Inc. It began as a network adapter vendor and has gone on to become a designer, developer, and manufacturer of networking solutions for both the consumer and business markets.In 2007, it was the leading networking company in...

     Firewall DFL-210/260/800/860/1600/2500 supports SIP (SIP-ALG) with firmware 2.20.01.05 and above
  • ZyXEL
    ZyXEL
    ZyXEL Communications Corp. , located in Hsinchu, Taiwan, is a manufacturer of DSL and other networking devices. . With headquarters in Taiwan, ZyXEL maintains branch offices in North America, Europe, and Asia...

     ZyWALL P1, 2Plus, 5 UTM, 35 UTM, 70 UTM, 1050, USG 100, USG 200, USG 300, USG 1000 supports SIP-ALG
  • Fortinet
    Fortinet
    Fortinet is headquartered in Sunnyvale, California and specializes in network security appliances. Fortinet’s flagship product line is sold under the brand name of FortiGate.-Corporate Overview:...

    , all FortiGates running v280/v300 builds
  • Linux
    Linux
    Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...

     Netfilter's SIP conntrack helper fully understands SIP and can classify (for QOS) and NAT
    Network address translation
    In computer networking, network address translation is the process of modifying IP address information in IP packet headers while in transit across a traffic routing device....

     all related traffic
  • PfSense
    PfSense
    pfSense is an open source firewall/router distribution based on FreeBSD. pfSense is meant to be installed on a personal computer and is noted for its reliability and offering features often only found in expensive commercial firewalls. It can be configured and upgraded through a web-based...

     FreeBSD based PfSense Firewall has QoS that properly tags VoIP traffic and a SIP proxy package that is available for NATed endpoints
  • Juniper
    Juniper
    Junipers are coniferous plants in the genus Juniperus of the cypress family Cupressaceae. Depending on taxonomic viewpoint, there are between 50-67 species of juniper, widely distributed throughout the northern hemisphere, from the Arctic, south to tropical Africa in the Old World, and to the...

     Netscreen and SRX firewalls include complete SIP Application Layer Gateway support
  • Netopia
    Netopia
    Netopia is a company, headquartered in Emeryville, California, that produces a variety of broadband products including modems, routers, gateways, and Wi-Fi devices. The company also produces the NBBS , as well as the Timbuktu remote administration software...

     Netopia supports ALG
  • PF
    PF (firewall)
    PF is a BSD licensed stateful packet filter, a central piece of software for firewalling. It is comparable to iptables, ipfw and ipfilter...

    , built-in OpenBSD firewall PF can handle the NAT through the "static-port" directive and the bandwidth control through the built-in queuing system of SIP connections
  • pfSense
    PfSense
    pfSense is an open source firewall/router distribution based on FreeBSD. pfSense is meant to be installed on a personal computer and is noted for its reliability and offering features often only found in expensive commercial firewalls. It can be configured and upgraded through a web-based...

    , a firewall
    Firewall (computing)
    A firewall is a device or set of devices designed to permit or deny network transmissions based upon a set of rules and is frequently used to protect networks from unauthorized access while permitting legitimate communications to pass....

    /router
    Residential gateway
    A residential gateway is a home networking device, used as a gateway to connect devices in the home to the Internet or other WAN.It is an umbrella term, used to cover multi-function networking computer appliances used in homes, which may combine a DSL or cable modem, a firewall, a consumer-grade...

     distribution based on FreeBSD
    FreeBSD
    FreeBSD is a free Unix-like operating system descended from AT&T UNIX via BSD UNIX. Although for legal reasons FreeBSD cannot be called “UNIX”, as the direct descendant of BSD UNIX , FreeBSD’s internals and system APIs are UNIX-compliant...

     and PF
    PF (firewall)
    PF is a BSD licensed stateful packet filter, a central piece of software for firewalling. It is comparable to iptables, ipfw and ipfilter...

    ; functionality can be expanded with packages like FreeSWITCH
    Freeswitch
    FreeSWITCH is a free and open source communications software for the creation of voice and messaging products. It is licensed under the Mozilla Public License , a free software license...

    , a free/open source software communications platform for making SIP, voice and chat driven products

See also

  • Comparison of VoIP software
    Comparison of VoIP software
    VoIP software is used to conduct telephone-like voice conversations across Internet Protocol based networks. VoIP stands for "Voice over IP". For residential markets, VoIP phone service is often cheaper than traditional public switched telephone network service and can remove geographic...

  • List of video telecommunication services and product brands
  • Mobile VoIP
    Mobile VoIP
    Mobile VoIP or simply mVoIP is an extension of mobility to a Voice over IP network. Two types of communication are generally supported: cordless/DECT/PCS protocols for short range or campus communications where all base stations are linked into the same LAN, and wider area communications using...

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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