architecture and function model for SDH-based multiservice transport platform(MSTP), SDH virtual concatenation (VC) and Link Capacity Adjustment Scheme(LCAS), packet encapsulation for POS/EOS;

• SDH多业务传送平台的结构和功能模型、SDH虚级联和链路容量调整机制，POS/EOS的数据包封装技术；