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7. Q & A
If you have problems during the installation or application, please try to solve
them through the following suggestions. And if it does not work, please contact
the sellers to get technical supports.
●
PWR light of power supply card turns OFF.
Check the power supply cable first, and then the power supply card.
●
LOS alarms of SDH optical interface
That is to say, there is receiving signal loss. First, check whether the cable is
connected correctly; second, if there are still alarms when self-loop the cable
(perhaps optical attenuation is needed), change the cables; if there are still
alarms then there is something wrong with device.
●
Indicator light of Ethernet interface or SNMP network management
interface is OFF.
First, check whether the cable works normally or not; then, check whether the
devices connect to Ethernet interface or SNMP network management interface
works normally or not. And make sure the cable is correct.
●
E1 channel failed
Check the E1 cable, optical interface and time slot configuration, check the
alarms in the EMS and use loop back function to find where the problem is.
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