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CYF is the abbreviation of CALL YOU FREE. Call You Free is a free web communication service originally developed to encourage communication in the internet community, the internauts. However, several tentatives failed at the beginning and internauts took some time to approve the initiative because of hardware and bandwidth limitations by the time it was developed. Other developers released similar products but the distinctive features of Call You Free was that it used Click2Call Technology, that lets the caller place his webcall using a webphone within a browser. Remember that all the earliest transmissions of voice over internet protocol required separate software to establish the communication. We are talking about using only the internet browser. That was really a new concept. Many complaints fall over CALL YOU FREE, specially from the open source community, because originally it was developed to run for Microsoft’s Internet Explorer (version 5 or higher), but today other developers joined the project to develop it for other internet browsers. ==History== The first steps developing Call you Free Technology dated from 1995/1997. They were conducted by Claudio Rosemffet from the University of Belgrano (Argentina), Pablo Cuello from de University of Buenos Aires and Fernando Speranza from de University of El Salvador, with the main purpose to connect the companies of the Mercosur (Southern Common Market), a Regional Trade Agreement (RTA) among Brazil, Argentina, Uruguay and Paraguay, founded in 1991. During that first stage, the results were not satisfactory at all due to the low bandwidth of the dial up internet connections, that could not provide more than 33 kbit/s. Since 2001, when ADSL technology became available in those countries, the second stage started achieving a good audio quality and getting better connectivity with no more audio breaks. In June 2009 a new technology was introduced making the communication process through the Web even better and simpler. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Call You Free」の詳細全文を読む スポンサード リンク
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