Product Overview
950-734-100-01, Revision 01
6
December 18, 1998
PLL-734 List 1
LED
S
D
ESCRIPTIONS
Figure 2.
LEDs on Front Panel
Table 2
describes the LEDs, shown on the front panel, in which n equals the POTS line. If you have installed two
RTs then both LEDs columns light in the manner described.
Table 2.
Front Panel LEDs Descriptions
LEDs
Mode
Description
PWR
On, all other LEDs flashing at 1 Hz
Running in Boot Mode due to invalid Application Program.
On, POTSn LEDs On, all other LEDs
running downward at 1 Hz
Active software download of the COLU.
On, POTSn LEDs On, all other LEDs
running upward at 1 Hz
Active software download of the RT connected to the COLU.
On
COLU is powered and the dc power provided to the HDSL pair is normal.
Flashing
One battery feed is missing or a battery feed fuse on the COLU is blown.
On, and FAULT Flashing
dc power provided to the HDSL pair is out of normal range.
SYNC
On
HDSL is in synchronization between COLU and RTs.
Flashing
COLU and RTs are attempting to synchronize.
MARGIN
On
MAR below preset value, or COLU and RTs MARs are below preset values.
Flashing
RTs Margins are below the preset value.
BYPASS
On
COLU is in Metallic Fallback, unless provisioned Disable.
On, and POTSn Flashing
SDT is occurring on POTSn.
FAULT
On
COLU has a fault.
Flashing
Alarm condition exists on the COLU.
POTSn
On
Channel is off-hook.
Flashing with Ring Cadence
Channel is ringing.
PLL-734
PG-PLUS
LIST
PWR
SYNC
BYPASS
POTS1
MARGIN
FAULT
POTS2
A
B
D
U
A
L
2
P
O
T
S
C
O
L
U
PairGain
Status LEDs