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  2. List of SIP software - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_software

    Snom One free/blue/yellow (Snom acquired and renamed pbxnsip) (SIP) Speedflow Communications VoIP class 4/5 softswitches with integrated billing, transcoding, SIP-H.323 converter. Sterlite Technologies Neox IPPBX, IMS - ISC, Dial Center - OmniChannel Call Center, IVR products

  3. Session Initiation Protocol - Wikipedia

    en.wikipedia.org/wiki/Session_Initiation_Protocol

    SIP is a text-based protocol, incorporating many elements of the Hypertext Transfer Protocol (HTTP) and the Simple Mail Transfer Protocol (SMTP). [3] A call established with SIP may consist of multiple media streams, but no separate streams are required for applications, such as text messaging, that exchange data as payload in the SIP message.

  4. FreeSWITCH - Wikipedia

    en.wikipedia.org/wiki/FreeSWITCH

    FreeSWITCH is a free and open-source telephony software for real-time communication protocols using audio, video, text and other forms of media. The software has applications in WebRTC, voice over Internet Protocol (VoIP), video transcoding, Multipoint Control Unit (MCU) functionality and supports Session Initiation Protocol (SIP) features.

  5. McDonald's Shamrock Shake Is Back — Along with Grimace's ...

    www.aol.com/mcdonald-shamrock-shake-back-along...

    The Shamrock Shake’s return calls for a McDonald’s family reunion. ... Fans have four chances (Feb. 7, Feb. 14, Feb. 21 and Feb. 28) to grab their free sip. The deal was inspired by the large ...

  6. GNU SIP Witch - Wikipedia

    en.wikipedia.org/wiki/GNU_SIP_Witch

    The SIP Witch is being developed since the 10th of August 2007 by David Sugar within the GNU Telephony project. The first version was 0.1.0. Version 1 was released on May 14, 2011. It is being used as a component of GNU Free Call, which is supposed to be an alternative to Skype. [1]

  7. Linphone - Wikipedia

    en.wikipedia.org/wiki/Linphone

    Linphone (contraction of Linux phone) is a free voice over IP softphone, SIP client and service. It may be used for audio and video direct calls and calls through any VoIP softswitch or IP-PBX. Linphone also provides the possibility to exchange instant messages.