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38 Chapter 2 Cabling the VPN Router and turning the power on
56/64K CSU/DSU WAN interface card LEDs
Figure 7
Figure 7 LEDs on the 56/64K CSU/DSU WAN interface card
Table 8
Table 8 LED indicators on the 56/64K CSU/DSU WAN interface card
LED
Blue
Red
Yellow
Green
NN46110-308 02.01
shows the LEDs on the 56/64K CSU/DSU WAN interface card.
Blue LED
56/64K
Green LED
describes the LEDs on the 56/64K CSU/DSU WAN interface card.
Description
The blue alarm LED is lit when receiving an upstream failure
denoted by an alarm indication signal (AIS).
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 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.
Red LED
DDS
Yellow LED
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