Nortel Networks 1750 manual Quad T1/E1 CSU/DSU WAN interface card LEDs, LED 1 LED LED 3 LED

34Chapter 1 Cables and power

Quad T1/E1 CSU/DSU WAN interface card LEDs

The following figure shows the LEDs on the quad T1/E1 channel service unit/ digital service unit (CSU/DSU) WAN interface card.

Figure 11 LEDs on the quad T1/E1 CSU/DSU WAN interface card

LED 1 LED 2

LED 3 LED 4

CS160012A

The following table describes the LEDs on the quad T1/E1 CSU/DSU WAN interface card.

Table 12 LED indicators on the quad T1/E1 CSU/DSU WAN interface card

LED	Indicator	Description
LED 1	Off	Port 1 is disabled.
	On	Port 1 is enabled and operating normally.
	Flashing	Port 1 is enabled and in an alarm state (red, yellow, or blue).
LED 2	Off	Port 2 is disabled.
	On	Port 2 is enabled and operating normally.
	Flashing	Port 2 is enabled and in an alarm state (red, yellow, or blue).
LED 3	Off	Port 3 is disabled.
	On	Port 3 is enabled and operating normally.
	Flashing	Port 3 is enabled and in an alarm state (red, yellow, or blue).
LED 4	Off	Port 4 is disabled.
	On	Port 4 is enabled and operating normally.
	Flashing	Port 4 is enabled and in an alarm state (red, yellow, or blue).

NN46110-316 03.01