Additional Information; Led Indicators - Net to Net Technologies 12-Port E1 Access Multiplexer EAM2000-12 User Manual

ADDITIONAL INFORMATION

LED Indicators

LED
PWR (Power)
E1 LK (Link)
E1 RX
(Receiving)
E1 TX
(Transmitting)
E1 AL (Alarm)
(A pulsing LED blinks steadily at a rate of once per second. A flashing LED blinks at a more
rapid, less constant rate.)
210-0000036 rev03
State Indication
solid green unit is operational
solid green E1 connection is established
pulsing E1 connection is established and active
green
no Loss of Synchronization (LOS)
illumination The incoming connection to the port
has been lost; no data is being
received.
flashing E1 activity
amber
solid amber heavy Rx traffic
no no activity
illumination
flashing E1 activity
amber
solid amber heavy Tx traffic
no no activity
illumination
no E1 is operational
illumination
solid amber Remote Alarm Indication (RAI)
The outgoing connection from the port
has been lost; no data is being
transmitted.
pulsing Alarm Indication Signal (AIS)
amber An indirect connection has been lost;
the port may no longer be receiving
data from the remote E1 modem.
Additional Information
If the Power LED is not illuminated, it is
unlikely the EAM2000-12 is receiving
power and none of the LEDs will be
illuminated.
An E1 link exists and the port may be
transmitting data but it is not receiving
any packets from the remote E1 modem.
The port is receiving valid data or status
packets from the remote E1 modem.
If the outgoing connection from the port
has also been lost then the remote E1
modem will have LOS as well.
The port is either receiving data from the
remote E1 modem or statistical packets
from the IP DSLAM management.
The port is receiving large amounts of
data from the remote E1 modem.
A link may exist but the port is not
receiving any data from the remote E1
modem.
The port is transmitting data to the
remote E1 modem.
The port is transmitting large amounts of
data to the remote E1 modem.
A link may exist but the port is not
transmitting any data to the remote E1
modem.
Note: If the E1 LK LED also remains unlit
then the port has LOS.
The remote E1 modem has lost its
incoming connection and has LOS.
The remote E1 modem has lost a
connection with an intermediate device
and LOS or RAI.