Paradyne 7974 Installation Instructions Manual page 5

Tdm sdsl standalone termination units
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LEDs
The following table contains a description of the LEDs on the Hotwire 797x Standalone
Termination Unit's front panel.
Label
Color
POWER
Green
ALARM
Red
TEST
Yellow
DSL
Green
DSX-1
Green
DTE
G.703
* 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.
LED is . . .*
Indicating . . .
On
Normal operation.
Off
No power to the unit.
Slow Cycling
Unit is in minimum mode and a download is
required.
On
Device failure, or self-test has failed.
Off
Self-test passed.
On
Loopback test or 511 test pattern in progress.
Off
No tests in progress.
Slow Cycling
Self-test in progress.
On
DSL link is up.
Off
The DSL link is down.
Slow Cycling
DSL training in progress.
Fast Cycling
An OOF condition.
On
DTE port is operational.
Off
DSX-1: No signal on DTE port.
Sync DTE: Configured control leads (DTR/RTS)
are not asserted.
G.703: No signal on DTE port.
Slow Cycling
DSX-1: Yellow Alarm Indication received.
Sync DTE: Not applicable.
G.703: Remote Alarm Indication received.
Fast Cycling
DSX-1: OOF, LOF, EER, or AIS condition.
Sync DTE: Not applicable.
G.703: OOF, LOF, EER, or AIS condition.
5

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