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随着技术的发展，调制解调器（Ｍｏｄｅｍ）已从最初的９．６ｋｂｉｔ／ｓ到目前的５６ｋｂｉｔ／ｓ，Ｍｏｄｅｍ的发展似乎已经到了顶峰，置式难以再创新，速度不可能有更大突破。但是通用串行总线（ＵＳＢ）技术的出现却给Ｍｏｄｅｍ带不了新的生机和活力。 一、USB Modem技?
With the development of technology, Modem has appeared from the first 9.6kbit / s to the current 56kbit / s. The development of Modem seems to have peaked. It is hard to innovate again and the speed can not be exceeded. However, the emergence of Universal Serial Bus (USB) technology gives Modem no new vitality and vitality. First, USB Modem technology?