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ＩＢＭ研制Ｉｎｔｅｒｎｅｔ电话软件美国ＩＢＭ公司正在研制一种利用Ｉｎｔｅｒｎｅｔ通电话的软件，利用这种软件用户可以通过Ｉｎｔｅｒｎｅｔ打高质量的长途电话，而其费用只与市话费相当。通常打电话时的语音信号转换成数字信号后信息量很大，１分钟的电话需要几十万...
IBM to develop Internet phone software US IBM is developing a way to use the Internet phone software, users can use this software to make high quality long distance calls over the Internet, and the cost is only equivalent to the city calls. Usually when phoning voice signal into a digital signal after a large amount of information, 1 minute phone needs hundreds of thousands ...