Adtran 550 Guia Do Utilizador

ATLAS 550 System Manual

Section 2  Engineering Guidelines

61200305L2-1B

© 2004 ADTRAN, Inc.

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Green

the unit is on.

Off

the unit is off.

Green (solid)

no diagnosed system faults were found.

Green (fast blink)

a flash download is in progress.

Yellow (solid)

a fault was diagnosed, but the condition no longer exists. 
The condition will be recorded in the system log.

Red (solid)

an error condition with either the power supply or the 
system temperature is present.

Red (fast blink)

a fatal error occurred during flash download.

Off

power is not currently supplied to the system.

Green (solid)

the physical link is up.

Green (flashing)

there is activity on the LAN.

Off

the physical link is down - no Ethernet connection.

Yellow

a user is logged into the system via the ADMIN/CRAFT 
port or via the ETHERNET port.

Off

there are no users logged into the system.

Green (solid)

the network interface is operating normally with error-free 
operation. If the interface experiences alarms, the OK 
LED remains off.

Yellow (solid)

the interface is operating in a test mode. This includes a 
self-test, a test pattern, or a test loopback. When 
illuminated, this LED also indicates that normal data flow 
is not occurring on the module ports.

Red (blink)

an error such as BPV (bipolar violation), OOF (out of 
frame), or CRC (cyclic redundancy check) has occurred.

Red (solid)

an alarm condition has been detected. When the alarm 
condition is no longer valid, the OK LED illuminates. To 
view an alarm condition, select the active alarm menu 
item. If the alarm conditions have been corrected, you 
can view the alarm which caused the activation of the 
ALARM LED in the system log.