Nortel 2000, Using Manual

Page: 350 / 405

350 Appendix C Media dependent adapters
208700-B
For installation instructions, see “Installing an MDA ” on page 363 .
1000BASE-LX: 450-1LR MDA and 450-1LX MDA
Table 67 1000BASE-SX MDA components
Item Label Description
1 Link Communication link LEDs (green):
On: Valid communications link.
Off: The link connection is bad or there is no connection to this port.
Blinking: The corresponding port is management disabled.
2 Phy (or)
Phy Select Phy status LEDs (green):
On: The corresponding Phy port is active.
Off: The corresponding Phy port is in backup mode or there is no
connection to this port.
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-X SC port connectors.
Warning:
This is a Class 1 Laser/LED product. It contains a laser light
source that can injure your eyes. Never look into an optical fiber or
connector port. Always assume that the fiber optic cable or connector is
connected to a laser light source.
Vorsicht:
Dieses Laser/LED-Produkt der Klasse 1 enthält eine
Laserlichtquelle, die zu Augenverletzungen führen kann. Sehen Sie nie in
einen Lichtwellenleiter oder Glasfaserstecker-Port. Gehen Sie immer
davon aus, daß das Glasfaserkabel oder der Glasfaserstecker an eine
Laserlichtquelle angeschlossen ist.