Table of Contents
Advertisement
SCP-PLL722-010-04H
LED
Condition
PWR
On
Flashing
On, and FAULT Flashing
On, all others flashing at 1 Hz
On, all others running downward at 1 Hz Active software download of the COLU
On, all POTS and ISDN LEDS On, all
others running upward at 1 Hz
SYNC
On
Flashing
MARGIN On
Flashing
BYPASS
On
and POTSn Flashing
and ISDN Flashing
FAULT
On
Flashing
ISDN
On
POTSn
On
Flashing with Ring Cadence
PLL-722 List 1
Table 2.
LED Descriptions
Mode
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 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 POTSn*.
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
Advertisement
Table of Contents
