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通过实例讨论了华为公司2500+SDH设备产生TU_AIS告警的多种原因,及逐段排除障碍点的方法;分析了PDI盘的告警性能和各站的告警信息,对环网中环带链站点设置为SNCP保护方式的重要性进行了说明。
This paper discusses several causes of TU_AIS alarm generated by Huawei 2500 + SDH equipment and the method of eliminating the obstacle point by section. By analyzing the alarm performance of PDI disk and the alarm information of each station, The importance of SNCP protection is explained.