Nortel Networks 2750 User Manual

  Chapter 2  Cabling the VPN Router and turning the power on

NN46110-318 02.01

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

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

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

LED indicators on the 56/64K CSU/DSU WAN interface card

Blue

The blue alarm LED is lit when the interface card detects a DDS 

out-of-frame (OOF) condition on the receive signal.

Red

The red alarm LED is lit when the interface card detects a DDS loss-of- 

signal (LOS) or loss-of-frame (LOF) condition on the receive signal.

Yellow

The yellow alarm LED is lit when the interface card detects a DDS 

out-of-service condition on the receive signal. (This LED indicates that 

the far-end equipment detects a local LOS or LOF condition.)

Green

The green LED is lit when the interface card receives valid DDS signal 

and framing (this LED indicates normal operation of the card.)

All LEDs off

The port is disabled.

56/64K

DDS

Blue LED 

Yellow LED 

Red LED

Green LED