DT Etherlink IV
User Manual
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Table 3.9 Ethernet LED behaviour according the device status
3.3.2 Alarm LEDs
The alarm LED’s on any Etherlink_IV device (Master/Slave) light with red or amber if any alarm
appears.
ECA
S
I
F
A
Cable is not connected
LED
LED Status
Device Status
Ethernet left LED
Green
Connection is active
Off
Connection is not active
Green blinking
Data receive and/or transmit
Ethernet right LED
Amber
100 Mbit/s receive/transmit rate
Off
10 Mbit/s receive/transmit rate
Name
G
ro
u
p
Alarm
status
Front-
Panel
DSL
«1», «2»
«3», «4»
Front-
Panel &
Connec-
tor
E1 SIF
«1», «2»
Connec-
tor
DSL
«1», «2»
«3», «4»
Description
LOS
DS
L
Urgent
R
R
Loss of signal in an SHDSL link
LOSW
R
R
Loss of frame alignment in an SHDSL link
LOSD
R
R
Loss of signal at the remote SHDSL side
BER-H
R
R
Block-error-rate in an SHDSL line according
to G.826
30%
SEGD
R
R
Loss of signal or an alarm on a regeneration
segment (segment degradation)
ALB
Urgent &
Non-urgent
A
R
SHDSL analogue loop back is activated
SEGA
Non-urgent
A
R
Data errors or loss of frame alignment on a
regeneration segment (segment alarm)
NM
A
R
Noise Margin < setup NMTHR value
LA
A
R
Line Attenuation > setup LATHR value
LOOP2
A
R
Loop is activated from the remote device to
the local device
RCONF
R
Configuration of the remote device is not
compatible with the configuration of the local
device (for example, the local device is
configured to transmit Ethernet data, while
the remote device is configured to transmit
two E1 streams)
LOS-S
E1
-1,
E
1
-2
,E
1
-3,E
1
-4
A
Loss of signal on the Е1 side
LFA-S
A
Loss of frame alignment on the E1 side
AIS-S
A
Receiving AIS on the E1 side
BER-S
A
Excessive block error rate on the Е1 side
LOOP1
A
Loop is activated towards the Е1 equipment
AIS-R
A
Receiving AIS on the E1 side of a remote
device