Beijing Huahuan Electronics Co., Ltd.
H0FL-EthMux.SA1601/SA1602 User’s Manual V1.3
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straight-through cable is used under manual mode (crossover cable should be
used); the electrical interface connection does not match the client configuration,
and network device connected with is working properly.
4.1.4
Ethernet Optical Port L/A LED off or OLOS LED on
Ethernet optical port L/A LED is off, indicating that the corresponding
Ethernet port does not establish connection properly. The OLOS LED is on,
indicating no optical signal is received. You can check the following subjects:
the corresponding fiber is connected or not; sending and receiving pins are
reversed or not; the emission wavelength of single-fiber module and the device
connected are the same (optical modules with matched emission wavelengths
should be used), and the remote device is working normally or not.
4.1.5
E1/T1 Interface Alarm LED ON
E1/T1 interface LOS/AIS LED is on, indicating loss of E1/T1 signal.
Troubleshooting can be conducted as following steps: first, check the E1/T1
terminal connected with the other end of cable, such as whether PCM terminal is
powered off; and then check whether the E1/T1 cable connections and
connectors are reliable; finally, check whether the E1/T1 cable is broken, this
will cause the loss of input signal.
LOS/AIS LED blinks slowly and regularly when E1/T1 interface AIS
alarm is detected, i.e. the alarm signal is all 1. Such alarm doesn’t indicate fault
conditions on the local device, but to detect the alarm information of E1/T1
terminal connected to the local device. The operation state of corresponding
device should be checked.
PKT LOS LED is on, indicating the service packet in peer end E1/T1 port
cannot be received in Ethernet links; blink indicates the service packet in peer
end E1 / T1 port loss or out-of-order in Ethernet links; off indicates there is no
service packet in peer end E1/T1 port loss or out-of-order in Ethernet links.