介绍了SDH传输中的STM-N帧的定位和开销处理的一些关键信息，有助于FPGA编程实现开销处理和通道处理。-Describes the SDH transmission of STM-N frame and the positioning of some of the key information processing costs, help processing and FPGA programming overhead channel processing.

SDH STM-1 Add-Drop Multiplexer Architecture

用于建立 STM类型单片机的软件，编辑文档等-Establishment type for STM microcontroller software, editing documents, etc....