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Model MA4443是一种全双工话音加密装置。该装置使用可用开关控制的声码器技术和LPC10信道或具有前向纠错方法的信道。系统包括电话送受话器、调制解调器和一
Model MA4443 is a full-duplex voice encryption device. The unit uses switchable vocoder technology and LPC10 channels or channels with forward error correction. System includes telephone handsets, modems and one