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In page Voice over IP:

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  • 1992: InSoft Inc. announces and launches its desktop conferencing product Communique, which includes VoIP and video.[5][7] The company is credited with developing the first generation of commercial, US-based VoIP, Internet media streaming and real-time Internet telephony/collaborative software and standards that would provide the basis for the Real Time Streaming Protocol (RTSP) standard.[citation needed]
  • 1993 Release of VocalChat, a commercial packet network PC voice communication software from VocalTec.[citation needed]
  • 1994: MTALK, a freeware LAN VoIP application for Linux[8]