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  2. 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.

  3. SIP trunking - Wikipedia

    en.wikipedia.org/wiki/SIP_trunking

    SIP trunking is a voice over Internet Protocol (VoIP) technology and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX) and unified communications facilities. [1]

  4. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    The prices of extensions on VoIP are lower than for PBX and key systems. VoIP switches may run on commodity hardware, such as personal computers. Rather than closed architectures, these devices rely on standard interfaces. [21] VoIP devices have simple, intuitive user interfaces, so users can often make simple system configuration changes.

  5. VoIP phone - Wikipedia

    en.wikipedia.org/wiki/VoIP_phone

    Traditional PSTN phones can be used as VoIP phones with analog telephone adapters (ATA). A VoIP phone or application may have many features an analog phone doesn't support, such as e-mail-like IDs for contacts that may be easier to remember than names or phone numbers, or easy sharing of contact lists among multiple accounts.

  6. Session Initiation Protocol - Wikipedia

    en.wikipedia.org/wiki/Session_Initiation_Protocol

    SIP was designed to provide a signaling and call setup protocol for IP-based communications supporting the call processing functions and features present in the public switched telephone network (PSTN) with a vision of supporting new multimedia applications.

  7. Mobile VoIP - Wikipedia

    en.wikipedia.org/wiki/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 telephones using DECT or PCS protocols for short range or campus communications where all base stations are linked into the same LAN, and wider area communications using 3G or 4G protocols.

  8. Web-based VoIP - Wikipedia

    en.wikipedia.org/wiki/Web-based_VoIP

    Web-based VoIP is the integration of voice over IP technologies into the facilities and methodologies of the World-Wide Web. It enables digital communication sessions between Web users or between users of traditional telecommunication services.

  9. Lyceum (software) - Wikipedia

    en.wikipedia.org/wiki/Lyceum_(software)

    Lyceum is a synchronous computer-mediated communication (CMC) software which allows groups of people to speak to one another in real time over the Internet using Voice over IP conferencing. Lyceum was developed at the Open University in the UK and was introduced into language tutorials in 2002.