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  2. List of SIP software - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_software

    ShoreTel IP phone systems with unified communications and contact center built in; 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.

  3. 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.

  4. Phone Power - Wikipedia

    en.wikipedia.org/wiki/Phone_Power

    In 2010, Phone Power introduced the Global Plus Add On plan for international calling. This allowed an additional 1200 minutes to those same countries. In January 2011, Phone Power launched its free iPhone App, [11] allowing customers to use the included international calling on their mobile phones. The company also offered a “Zippy” USB ...

  5. Viber - Wikipedia

    en.wikipedia.org/wiki/Viber

    Rakuten Viber, or simply Viber, is a cross-platform voice over IP (VoIP) and instant messaging (IM) software application owned by Japanese multinational company Rakuten, provided as freeware for the Android, iOS, Microsoft Windows, macOS and Linux platforms. [1]

  6. Comparison of VoIP software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_VoIP_software

    This is a comparison of voice over IP (VoIP) software that examines applications and systems used for conducting voice and multimedia communications across Internet Protocol (IP) networks. VoIP technology has transformed telecommunications by offering alternatives to traditional telephony systems while providing enhanced features and cost savings.

  7. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    Voice over IP has been implemented with proprietary protocols and protocols based on open standards in applications such as VoIP phones, mobile applications, and web-based communications. A variety of functions are needed to implement VoIP communication.

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