Specifications

22 AT-8700XL Series
C613-03064-00 REV E
Uplink Module LEDs
The following tables may be helpful when diagnosing possible operational
faults. These LEDs are located on the face-plate of the respective Uplink
Module model.
1. Early versions of the AT-A39/T operate at 1000 Mbps only.
Table 11: Switch Port LEDs (AT-8724XL and AT-8748XL).
LED State Function
L/A (Link/Activity) Green A 100 Mbps link is open
Flashing Green 100 Mbps activity is occurring
Amber A 10 Mbps link is open
Flashing Amber 10 Mbps activity is occurring
D/C
(Duplex/Collision)
Green The port is operating at full-duplex
Amber The port is operating at half-duplex
Flashing Amber Collisions are occurring on the line
Table 12: Uplink Module LEDs (AT-A35-SX/SC and AT-A35-LX/SC).
LED State Function
Link Green The port is receiving light
Off No link is present
Activity Flashing Amber Frames are being transmitted or received
through the port
Off No activity is occurring
Table13: Uplink Module LEDs (AT-A39-T/RJ-45).
LED State Function
Full Dup/Half
Dup/Col
Green The port is operating at full-duplex
Amber The port is operating at half-duplex
Flashing amber Collisions are occurring
Off No link is present
Activity Green A 1000 Mbps link is open
Flashing green 1000 Mbps activity is occurring
Amber
1
A 10/100 Mbps link is open
Flashing Amber
1
10/100 Mbps activity is occurring
Off No link is present