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SCP-PLL724-010-04H
LEDs
Mode
PWR
On
Flashing
and FAULT Flashing
On, other LEDs flashing at 1 Hz
On, POTS On, other LEDs running
downward at 1 Hz
On, POTS On, other LEDs running
upward at 1 Hz
SYNC
On
Flashing
MARGIN On
Flashing
BYPASS
On
and POTS Flashing
and ISDN Flashing
FAULT
On
Flashing
ISDN
On
POTS
On
Flashing with Ring Cadence
PLL-724 List 1
Table 2.
LED Descriptions
Description
COLU is powered and the dc power provided to the HDSL pair is normal.
One battery feed is missing or a battery feed fuse on the COLU is blown.
DC power provided to the HDSL pair is out of normal range.
Running in Boot Mode due to invalid Application Program
Active software download of the COLU
Active software download of the RT connected to the COLU
HDSL is in synchronization between COLU and RT.
COLU and RT are attempting to SYNC.
COLU HDSL margin is equal to or below the threshold value.
RT HDSL margin is equal to or below the threshold value.
COLU is in fallback to metallic.
SDT is occurring on POTS.
SDT is occurring on ISDN or loopback is active on ISDN.
COLU has a fault.
Alarm condition exists on the COLU.
Channel is active and ready for layer 2 communication.
Channel is off-hook.
Channel is ringing.
January 6, 2003
LED Descriptions
7
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