In a time division multiplex(TDM) system,a repetitive group of signals resulting from a signal sampling of all channels,including any additional signals for synchronizing and other required system information.

• 在时分多路复用（TDM）系统中，由所有信道的信号采样中产生的重复信号组，它包括为同步要求的附加信号和其它需要的系统信息。