FIELD: communication technology.
SUBSTANCE: invention relates to communication technology and can be used in optical communication systems. The optical line terminal (OLT) of the passive optical network family performs real-time monitoring with respect to changes in the authorized optical network unit (ONU) interval or the number of ONU operations in connected and offline mode and receives a set of suspicious ONUs with long-term light interference of the pulse type and the terminal performs fault diagnostics with respect to a set of suspicious ONUs to receive ONUs with long-term light interference of the pulse type.
EFFECT: increase in the accuracy of determining the position of optical network devices (ONUs) with long-term pulse-type light interference.
10 cl, 14 dwg
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