6
LED Indicators
Table 1. LED States (1 of 3)
LED
State
Indication
Additional Information
DS3
Connection
Lnk
flashing
green*
DS3 is operational
The DS3 connection has been
established and traffic is
flowing.
solid green
DS3 link is
established
A connection exists but there is
indication of a problem with the
DS3 line.
no
illumination
Red Alarm:
The
incoming
connection to the
unit has been lost;
no data is being
received.
If the outgoing connection from
the unit has also been lost then
the unit's partner DNE4500 will
be in Red Alarm as well.
Note: When a DNE4500 is in
Red Alarm, the Ethernet link
will be disabled and the
Ethernet 100, Act and Lnk
LEDs will show solid
illumination.
DS3
Connection
Alm
no
illumination
DS3 is operational
Note: If the DS3 Lnk LED also
remains unlit then the unit is in
Red Alarm.
solid amber
Yellow Alarm: The
outgoing
connection from the
unit has been lost;
no data is being
transmitted.
The unit's partner DNE4500
has lost its incoming connection
and is in Red Alarm.
Note: When a DNE4500 is in
Yellow Alarm, the Ethernet link
will be disabled and the
Ethernet 100, Act and Lnk
LEDs will show solid
illumination.
pulsing
amber
Blue Alarm:
An
indirect connection
has been lost; unit
may no longer be
receiving data from
its partner
DNE4500.
The unit's partner DNE4500
has lost a connection with an
intermediate device and is in
Red or Yellow Alarm.
Note: When a DNE4500 is in
Blue Alarm, the Ethernet link
will be disabled and the
Ethernet 100, Act and Lnk
LEDs will show solid
illumination.
