A data transmission device that connects a remote terminal to a telephone circuit and converts the signal of terminal into the signal of line or converts the signal transmitted from processing center into the signal of remote terminal.
英
美
- 一種數傳設備，它把遠程終端設備連到電話(huà)線(xiàn)上，并把終端的信號轉換成線(xiàn)上傳輸的信號，或把處理中心傳送來(lái)的信號轉換成遠程終端設備信號。
