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