Huawei EchoLife HG8120 Series Quick Start Manual page 13

FAQs
The LOS indicator blinks.
 If the LOS indicator blinks once two seconds, check whether the pigtail fiber is properly
connected and the connector is clean.
 If the GPON terminal blinks twice a second, contact the service provider for help.
The PON indicator is off.
 Check whether the OPTICAL port and optical fiber is properly connected.
 The GPON terminal fails to register with the upper-layer device. Contact the service
provider for help.
The phone does not ring upon an incoming call but communication is in normal
state when the phone is in off-hook state.
 The GPON terminal provides a maximum of 60 V AC ringing current voltage. Check
whether the ringing current voltage of the phone is higher than 60 V AC. If it is higher than
60 V AC, replace it with another phone.
How can I restore factory defaults?
 Press Reset by using a needle-type object for longer than 10s to restore factory defaults
and reset the GPON terminal. If the indicator is off and then is lit, the system restarts
successfully.
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