Fault State: Not lit or blinking red, indicating fiber optic connection issues, OLT port issues, or PON module faults. LAN Indicator Light. Connect ONU to OLT PON port with a splitter Make sure ONU rX power in the proper range (-8~ -27dBm). ONU auto-learn function is enabled. In this case, ONU will be added. If the power supply is normally connected, the POWER indicator still does not light up, we recommend that you try replacing the ONU with a new one. Used to indicate the PON link status and OLT registration status. It supports WiFi services, VoIP, and Ethernet services. The OLT and ONU are managed using CLI/HTTP/SNMP/TR069/Telnet protocols. In the following table, we can see the issues related to OLT and ONT that cause. When an ONU fails to go online, locate the fault based on the following fault symptoms and possible causes.
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