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2. Skype - Wikipedia

   en.wikipedia.org/wiki/Skype

   Skype supports conference calls, video chats, and screen sharing between 25 people at a time for free, [55] which then increased to 50 on 5 April 2019. [56] Skype does not provide the ability to call emergency numbers, such as 112 in Europe, 911 in North America, 999 in the UK or 100 in India and Nepal. [57]

3. Videotelephony - Wikipedia

   en.wikipedia.org/wiki/Videotelephony

   Videotelephony (also known as videoconferencing or video call) is the use of audio and video for simultaneous two-way communication. [ 1] There are many terms to refer to videotelephony. Videophones are standalone devices for video calling (compare Telephone ). In the present day, devices like smartphones and computers are capable of video ...

4. Web conferencing - Wikipedia

   en.wikipedia.org/wiki/Web_conferencing

   Web conferencing. Web conferencing is used as an umbrella term for various types of online conferencing and collaborative services including webinars ( web seminars ), webcasts, and web meetings. Sometimes it may be used also in the more narrow sense of the peer-level web meeting context, in an attempt to disambiguate it from the other types ...

5. Zoom Video Communications - Wikipedia

   en.wikipedia.org/wiki/Zoom_Video_Communications

   Zoom Video Communications, Inc. (commonly shortened to Zoom, and stylized as zoom) is a communications technology company primarily known for the videoconferencing application Zoom. The company is headquartered in San Jose, California, United States. The company was founded in 2011 by Eric Yuan, a former Cisco engineer and executive.

6. Comparison of web conferencing software - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_web...

   Unified Communications (UC) is a marketing buzzword describing the integration of real-time, enterprise, communication services such as instant messaging (chat), presence information, voice (including IP telephony), mobility features (including extension mobility and single number reach), audio, web & video conferencing, fixed-mobile ...

7. Comparison of VoIP software - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_VoIP_software

   This is a comparison of voice over IP (VoIP) software used to conduct telephone-like voice conversations across Internet Protocol (IP) based networks. For residential markets, voice over IP phone service is often cheaper than traditional public switched telephone network (PSTN) service and can remove geographic restrictions to telephone numbers, e.g., have a PSTN phone number in a New York ...