本文扼要的介绍了脉冲编码传输设备的原理，其中包括有话路、定时、同步、编译码和帧结构。
This paper gives a brief description of the design principles of a PCM multiplex terminal for fibre-optic communication, namely, speech channel, timing, synchronization, coding decoding and format.
把传输的信息编码成脉冲的振幅，因而使每个预先规定的脉冲能量值对应于一个信息。
The transmitted information is coded into the amplitude of the pulses so that each predetermined value of pulse energy is associated with a message.
给出一种基于脉冲编码调制原理实现高速数字传输系统中低速设备接入的方法。
On the basis of PCM Encoding Theorem, a method for low rate equipments' imported into high rate digital transmission systems is given.
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