Chapter 1 Hardware overview 31

56/64K CSU/DSU WAN interface card LEDs

Figure 10 shows the LEDs on the 56/64K CSU/DSU WAN interface card.

Figure 10 LEDs on the 56/64K CSU/DSU WAN interface card

Blue LED

Red LED

56/64K

DDS

Green LED

Yellow LED

Table 7 describes the LEDs on the 56/64K CSU/DSU WAN interface card.

Table 7 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.

 

 

ADSL WAN interface card LEDs

Figure 11 shows the LEDs on the ADSL WAN interface card.

Figure 11 LEDs on the ADSL WAN interface card

RX/TX LED

ADSL

RX/TX

CONN

CONN LED

Nortel VPN Router Installation — VPN Router 1010/1050/1100

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Nortel Networks 1100, 1050, 1010 manual 56/64K CSU/DSU WAN interface card LEDs, Adsl WAN interface card LEDs

1010, 1050, 1100 specifications

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