Nortel Networks 2700 用户手册
Chapter 2 Cabling the VPN Router and turning the power on 45
Nortel VPN Router Installation — VPN Router 2700
56/64K CSU/DSU WAN interface card LEDs
shows the LEDs on the 56/64K CSU/DSU WAN interface card.
Figure 14
LEDs on the 56/64K CSU/DSU WAN interface card
describes the LEDs on the 56/64K CSU/DSU WAN interface card.
Table 10
LED indicators on the 56/64K CSU/DSU WAN interface card
LED
Description
Blue
The blue alarm LED is lit when receiving an upstream failure
denoted by an alarm indication signal (AIS).
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.
Yellow
The yellow alarm LED is lit when the far-end equipment is in the
red alarm condition.
Green
The green LED is lit when the condition is normal operation.
56/64K
DDS
Blue LED
Yellow LED
Red LED
Green LED