Specifications

Hardware Reference 37
C613-03020-00 REV K
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. Uplink Modules are expansion options and must be purchased
separately.
1. Early versions of the AT-A39/T operate at 1000 Mbps only. 10/100/1000 Mbps operation is
available only if the AT-A39/T Uplink Module is installed in a Rapier G6, Rapier G6F or Rapier i
model, otherwise operation is fixed at 1000 Mbps.
Table 18: LEDs on the AT-A35-SX/SC and AT-A35-LX/SC Uplink Modules
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
Table19: LEDs on the AT-A39-T/RJ-45 Uplink Modules
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