This paper presents a new method used in SDH transmission systems to converge the HDLC data frames from 12 independent data communication channels (DCC) into one time division multiplexing data link.

• 采用现场可编程门阵列 (FPGA) ；设计了一种用于SDH传输系统中数据通信通道 (DCC)数据帧汇聚与速率适配的电路 .