56/64K Csu/Dsu Wan Interface Card Leds; Figure 8 Leds On The 56/64K Csu/Dsu Wan Interface Card; Table 9 Led Indicators On The 56/64K Csu/Dsu Wan Interface Card - Nortel 1750 Install Manual

56/64K CSU/DSU WAN interface card LEDs

Figure 8 shows the LEDs on the 56/64K CSU/DSU WAN interface card.

Figure 8 LEDs on the 56/64K CSU/DSU WAN interface card

Table 9 describes the LEDs on the 56/64K CSU/DSU WAN interface card.

Table 9 LED indicators on the 56/64K CSU/DSU WAN interface card

LED
Blue
Red
Yellow
Green
All LEDs off
Chapter 1 Cabling the VPN Router and turning the power on 35
Blue LED Red LED
56/64K
DDS
Green LED Yellow LED
Description
The blue alarm LED is lit when the interface card detects a DDS
out-of-frame (OOF) condition on the receive signal.
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.
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.)
The green LED is lit when the interface card receives valid DDS signal
and framing (this LED indicates normal operation of the card.)
The port is disabled.
Nortel VPN Router Installation — VPN Router 1750