数字时分多路复用系统要求有一套严格的定时系统。在发送端，发送定时系统控制各话路按照一定的时间顺序抽样，每一样值又按照一定的时间顺序编为8位码。最后，不同话路的语音数字编码、同步监视对告码组、话路的信令码按照一定的时间顺序组合起来，构成综合性的数字码流。在接 Digital time division multiplexing systems require a rigorous timing system. At the sending end, the sending timing system controls each session according to a certain time sequence, and each sample is also compiled into an 8-bit code according to a certain time sequence. Finally, the speech coding of different speech channels, synchronization monitoring of the code group, the speech code of the speech channel are combined according to a certain time sequence to form a comprehensive digital code stream. In the pick