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(四)数据调制解调器数据调制解调器(Modem)位于数据终端设备(DTE)与数据通信设备(DCE)之间,完成A/D、D/A变换和相应的接口控制功能,以达到利用传统的模拟电话信道传输数据的目的。
Data Modem Data Modem is located between data terminal equipment (DTE) and data communication equipment (DCE) to perform A / D, D / A conversion and corresponding interface control functions to achieve the use of traditional analog phones The purpose of channel data transmission.