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ITU V.70
ITU V.70 is a standard for Digital Simultaneous Voice and Data (DSVD), a MODEM related standard wherein digitized voice is mixed with digital data over a POTS line or leased line. == How it works == DSVD allows users of two DSVD capable modems to simultaneously engage in a point-to-point voice conversation and data transmission. DSVD does not appear to allow dialup internet users or users of point to point modem connections (such as to the office or a Bulletin Board System) to make or receive arbitrary voice calls while online. In ordinary circumstances though this did not work. DSVD only works when the user's internet service provider and telephone service provider are the same organization. On top of this regulatory requirement special equipment is required at the telco is required at the Subscriber Line Interface Circuit (SLIC).
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「ITU V.70」の詳細全文を読む
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