多速率POS测试CPCI模块设计原理及方法

摘要

对POS传输网络进行严格的测试是检验IP over SDH网络的必经途径，根据IP映射和解映射到SDH帧不同层次的协议及方法，阐明了设计原理，提出了相应的测试方案和设计实现方案，采用多速率接口芯片实现对SDH层次的适配，采用FPGA对SDH、IP层协议进行解析和发生的方法，实现了对SDH层和IP层的测试，实验结果证明设计实现方案是可靠的和行之有效的。%The strict testing for POS( IP over SDH) transmission network is the necessary way to inspect IP over SDH network. The design principles are clarified according to the standard which defines how to map IP data to SDH frame and demap ip data from SDH frame at different levels,putting forward the test scenarios and design implemen-tations,the project apply the multi-rate interface chip to match the test requirment on SDH layer,the generation and analysis of SDH and IP layer protocol is realized in the FPGA. The experimental results proved that the design is reliable and works well.