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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
SYSTEM OK
PORTS
when
DSX-1
or G.703
selected
PORTS
when
DSL
selected
* Slow Cycling: LED turns off and on in equal duration once per second.
M/SDSL
Fast Cycling: LED turns off and on in equal duration 5 times per
8747
99-16606
Pulsing:
LED
LED is . . .* Indicating . . .
On
(Green)
Off
Slow cycling
Pulsing
Alrm
On
(Amber)
Off
Test
On
(Amber)
Slow cycling
Off
1–8
On
(Green)
Slow cycling
Fast cycling
Off
1–8
On
(Green)
Slow cycling
Fast cycling
Off
second.
LED turns off momentarily once per second.
Normal operation; card functioning
normally.
No power to card, or card failure.
Unit is in minimum mode and a
download is required.
Normal operation.
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.
Loopback test or 511 test pattern in
progress.
POST in progress.
No tests.
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.
DSL link is up.
DSL training in progress.
OOF condition.
DSL link is down.
6
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