User manual

Raisecom Technology Co., Ltd
13
7. Q & A
If there are any problems during installation and using, try the following proposals. If the
problems still can not be solved, please contact distributors/agents for help.
● If PWR, PWR1 and PWR2 are all OFF
Please check if power supply cable is connected and then check if the Power Supply
Board works normally
*Explanation of PWR, PWR1and PWR2 combination:
PWR PWR1 PWR2 Explanation
ON ON ON The two power supply modules and main circuit works normally.
ON ON OFF The first power supply works normally, the second one works abnormally
and the main circuit works normally.
ON OFF ON The first power supply works abnormally, the second one works normally and
the main circuit works normally.
OFF ON ON The first power supply works normally, the second one works normally but the
main circuit works abnormally.
OFF ON OFF The first power supply works normally, the second one works abnormally but
the main circuit works abnormally.
OFF OFF ON The first power supply works abnormally, the second one works normally but
the main circuit works abnormally.
OFF OFF OFF Not powered on or neither of the power supply module works normally.
● E1 LOS indicator is ON
Answer: Loss of receiving signal occurs at e1 port. Check whether E1 cable is connected
correctly; if there is still LOS alarm please change the E1 cable otherwise there is
something wrong with the equipment.
● Ethernet LINK indicator OFF
Answer: please check if the UTP cable is broken off first and then check if the equipment
that connects with RC953-8FE16E1 works normally. Please make sure that the correct
Ethernet cable is used.
● Packets loss during traffic transmitting
Answer: Firstly, please check the connection of Ethernet and E1 cables, and make sure
the Channel, Map and DIP-switch configuration is correct.
Secondly, please avoid loops of Ethernet interfaces. For example, more than one
Ethernet interfaces can not connect to a same Ethernet switch if they are not configured
as Trunk interfaces.