Nortel Networks 450 manual Installing an MDA, Table C-4 BASE-LX MDA Components

Media Dependent Adapters

For installation instructions, see “ Installing an MDA” on page C-11.

Table C-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	Phy status LEDs (green):
	(or)
	Phy Select
		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 (see “1000BASE-LX Multimode Applications”
		on page C-13 for special requirements).

Installing an MDA

The Uplink Module slot on the BayStack 450 switch accommodates a single MDA. The connection can be either an RJ-45 10/100BASE-TX MDA or a fiber (100BASE-FX or 1000BASE-SX/LX) MDA with an SC or MT-RJ connector.

Note: The MDAs are not hot-swappable. Power down the switch before installing or removing an MDA.

To install an MDA into the Uplink Module slot:

1.Unplug the AC power cord from the back of the switch.

2.Loosen the thumb screws and remove the filler panel (or previously installed MDA) from the Uplink Module slot.

302401-D Rev 00 C-11