Installation & Safety Guide
17
SFP and 10/100/1000Base-T LEDs for the AT-8648T/2SP switch
LED
State
Description
LINK
Off
There is no link between the port
and the end-node.
Green
A valid link has been established
between the port and the end-
node.
Mode - COL
Off
No data collisions are occurring on
the port.
Flashing Green
Data collisions are occurring on
the port.
Mode - SPD
Off
The port is operating at 10/100
Mbps.
Green
The port is operating at 1000
Mbps.
Mode - FDX
Off
The port is operating in half-duplex
mode.
Green
The port is operating in full-duplex
mode.
Mode - ACT
Off
There is no activity on the port
Flashing Green
There is activity on the port.
