ADTRAN Atlas 550 System Manual page 30

Section 2 Engineering Guidelines
For these LEDs...
Option Modules Status
Status
Online
Test
30
Table 3. Description of ATLAS 550 LEDs (Continued)
This color light...
Green (solid)
Green (fast blink)
Red (solid)
Red (fast blink)
Red (slow blink)
Off
Green (solid)
Green (fast blink)
Green (slow blink)
Yellow (solid)
© 2004 ADTRAN, Inc.
Indicates that...
one or both modules (in the case of a Resource Module)
are OK.
one or both modules (in the case of a Resource Module)
have been set offline by the user,
OR
one or both modules (in the case of a Resource Module)
have invalid flash memory.
a port on the installed module is currently in alarm.
one module has no response, has been removed, or is
not supported.
one module is not ready.
no module occupies the slot.
one or both modules (in the case of a Resource Module)
have an active connection.
one module has invalid flash memory or is downloading
firmware.
one module has an active connection.
one module is in a test mode.
ATLAS 550 System Manual
61200305L2-1B