数据: data; record; information信道: channel; route; chain信道变换器: channel translator信道变换: channel conversion; channel translation数据信道: data channel等时数据信道: isochronous data channel分组数据信道: packet data channel pdch; pdch packet data channel交换数据信道: switched data channel模拟数据信道: analog data channel数据信道模块: data channel module数字数据信道: digital data channel同步数据信道: synchronous data channel显示数据信道: ddc: display data channel异步数据信道: asynchronous data channel数据变换器: data converter; data reducer; data tra ducer; data transducer分组业务数据信道: packet data traffic channel pdtch输入-输出数据信道: input-output data channel数据信道传播时间: data channel propagation time数据信道检测器: data channel detector; data detector数据信道接口部件: dciu data channel interface unit专用物理数据信道: dpdch dedicated physical data channel多数据通道，多数据信道: multiple data channel按需分配的数据信道: demand-assigned data channel波道变换: channel change磁道变换: track switch
