6
Front Panel LEDs
The following table describes the meaning and states of the LEDs on the
front panel. PORTS LEDs represent the DTE or DSL ports depending on
the Port LEDs selection on the Control screen.
Type
LED
LED is . . .* Indicating . . .
SYSTEM
OK
(Green)
On
Off
Slow cycling
Pulsing
Normal operation; card functioning
normally.
No power to card, or card failure.
Unit is in minimum mode and a
download is required.
Normal operation.
Alrm
(Amber)
On
Off
Device failure, Power-On Self-Test
(POST) is not complete, or an
alarm was reported on a DSL,
DSX-1, or G.703 port.
No alarms.
Test
(Amber)
On
Slow cycling
Off
Loopback test or 511 test pattern in
progress.
POST in progress.
No tests.
PORTS
when
DSX-1
or G.703
selected
1–8
(Green)
On
Slow cycling
Fast cycling
Off
Recoverable signal present on the
network.
Yellow Alarm Indication (DSX-1) or
Remote Alarm Indication (G.703)
An OOF, LOF, EER, or AIS
condition exists.
No signal on the port.
PORTS
when
DSL
selected
1–8
(Green)
On
Slow cycling
Fast cycling
Off
DSL link is up.
DSL training in progress.
OOF condition.
DSL link is down.
* Slow Cycling: LED turns off and on in equal duration once per second.
Fast Cycling: LED turns off and on in equal duration 5 times per
second.
Pulsing:
LED turns off momentarily once per second.
M/SDSL
8747
99-16606
SYSTEM
O
K
A
lrm
Test
5
6
7
8
POR
TS
1
2
3
4
