27
LEDs
The FrameSaver unit’s faceplate includes LEDs ( light-emitting diodes) that provide
status on the FrameSaver unit and its interfaces. In addition, it provides backup status
for FrameSaver units equipped with an ISDN DBM.
General LEDs
Label
Indication
Color
What It Means
OK
Power and
Operational
Status
Green
ON –
FrameSaver unit has power and
has passed self-test.
OFF –
FrameSaver unit is in a power-up
self-test, or there is a failure.
ALM
Operational
Alarm ( Fail )
Red
ON –
FrameSaver unit has just been
reset, or an error or fault has been
detected.
OFF –
No failures have been detected.
TST
Test Mode
Yellow
ON –
Loopback or test pattern in
progress, initiated locally, remotely,
or from the network.
OFF –
No tests are active.
BKP
1
Models
9126 and
9128 only
Backup
Yellow
ON –
FrameSaver unit is in Backup
mode; that is, the backup link has
been established, and backup is in
progress through the specified
Alternate Destination Link.
OFF –
FrameSaver unit is not in Backup
mode.
Blinking ON and OFF – Alternate
Destination Link is being
established, but no data has been
passed.
1
When an ISDN BRI DBM is installed, if the OK LED comes on during power
recycling, then goes off, the ISDN BRI DBM may have failed.
