Technological breakthrough period (1995-1996), IP Phone as the earliest online application on the Internet, then put the two sides have the same client as long as the general application software can real-time calls over the Internet, voice quality has a lot of problems, of course, the first to launch the client software is Israel VocalTec company, they are announced in February 1995, \ "Internet Phone ", can be said to be the prototype of the modern IP Phone, since VocalTec introduced software \ "Internet Phone ", after a lot of software companies, including many in the company, has launched a similar software, such as Microsoft NetMeeting, IDT Net2Phone, NetSpeak WebPhone, Intel Internet Vid
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