Nortel Networks Media Dependent Adapter - Manual (Page 14)

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Table 4. 1000BASE-LX MDA Components
Item Label Description
1 Link Communication link LEDs (green):
On: Valid communications link.
Off: The communications link
connection is bad or there is no
connection to this port.
Blinking: The corresponding port
is management disabled.
2 Phy Select Phy Selection LEDs(green):
On: The corresponding Phy port is
selected.
Off: The corresponding Phy port is
in backup mode.
3 Activity Port activity LEDs (green):
Blinking: Indicates network activity
level for the corresponding port. A
high level of network activity can
cause LEDs to appear to be on
continuously.
4 1000BASE-FX SC port connectors.