Introduction - If you have any usage issues, please Google them yourself
SDH is a modern optical fiber communication is widely used in data transmission format, in the SDH frame structure, as the former 9 overhead bytes, it contains a lot of important information, the procedures for receiving SDH overhead processing, search header, sub-frequency ,勤務if E1 asynchronous byte fifo. Removable for three source code, I do not know the three procedures can be arrived