SDH光传输网是目前公安通信专网的基础传输网络,它的稳定运行与否关系到公安警令的顺畅,但网络故障的发生是不能完全避免的,因此我们必须熟练掌握SDH的故障排查及处理办法,减少网络故障对公安工作的影响。笔者根据多年SDH光传输网的维护经验,总结出一套行之有效的故障排查及处理方法,在此与工作在公安科技战线的技术民警一起分享。 SDH optical transmission network is the basic transmission network of public security communications private network. Its stable operation is related to the smoothness of public security warning. However, the occurrence of network failure can not be completely avoided. Therefore, we must master SDH troubleshooting and Measures to reduce the impact of network failures on public security work. Based on many years of experience in the maintenance of SDH optical transmission network, the author summed up a set of effective troubleshooting and treatment methods, in this work with the technical police in the public security technology to share with the police.