ADTRAN Atlas 550 - Manual (Page 55)

Chapter 4. Using the Front Panel
61200305L1-1 ATLAS 550 User Manual 4-5
Module Status Green (solid) One or both modules (in the case of a Resource
Module) are OK.
Green (fast blink) • One or both modules (in the case of a Resource
Module) have been set offline by the user.
• One or both modules (in the case of a Resource
Module) have invalid flash memory.
Green (slow blink) One module has been set offline or has invalid flash
memory.
Red (solid) One module failed its selftest.
Red (fast blink) One module has no response, has been removed, or
is not supported.
Red (slow blink) One module is not ready.
Off No module occupies the slot.
Module Online Green (solid) One or both modules (in the case of a Resource
Module) have an active connection.
Green (fast blink) One module has invalid flash memory or is
downloading firmware.
Green (slow blink) Only one module has an active connection.
Module Test Yellow (solid) One module is in a test mode.
Table 4-3. ATLAS 550 LEDs (Continued)
For these LEDs... This color light... Indicates that...