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48 Chapter 2 Cabling the VPN Router and turning the power on
T1/E1 CSU/DSU WAN interface card LEDs
Figure 16
Figure 16 LEDs on the T1/E1 CSU/DSU WAN interface card
Table 12
Table 12 LED indicators on the T1/E1 CSU/DSU WAN interface card
LED
LED 1
LED 2
LED 3
LED 4
NN46110-318 02.01
shows the LEDs on the T1/E1 CSU/DSU WAN interface card.
LED 1, Red
LED 4, Green
describes the LEDs on the T1/E1 CSU/DSU WAN interface card.
Indicator
Red
Blue
Yellow
Green
LED 2, Blue
LED 3, Yellow
Description
The red alarm LED is lit when a loss-of-signal (LOS) or
out-of-frame (OOF) condition is detected on the receive
signal.
The blue alarm LED is lit when receiving an upstream
failure denoted by an alarm indication signal (AIS).
The yellow alarm LED is lit when the far-end equipment
is in the red alarm condition.
The green LED is lit when the condition is normal
operation.
CS160012A
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