3-12
Cisco ONS 15454 Reference Manual, R4.1.x and 4.5
February 2004
Chapter 3 Electrical Cards
DS3-12 and DS3N-12 Cards
Figure 3-5 shows the DS3N-12 faceplate and a block diagram of the card.
Figure 3-5 DS3N-12 Faceplate and Block Diagram
3.5.4 DS3-12 and DS3N-12 Card-Level Indicators
Table 3-4 describes the three card-level LEDs on the DS3-12 and DS3N-12 card faceplates.
BTC
ASIC
DS3A
ASIC
61348
Protection
Relay
Matrix
B
a
c
k
p
l
a
n
e
12
Line
Interface
Units
FAIL
ACT/STBY
SF
DS3N
12
1345987
Table 3-4 DS3-12 and DS3N-12 Card-Level Indicators
Card-Level Indicators Description
Red FAIL LED
The red FAIL LED indicates that the card’s processor is not ready. Replace
the card if the red FAIL LED persists.
ACT/STBY LED
Green (Active)
Amber (Standby)
When the ACTV/STBY LED is green, the DS3-12 card is operational and
ready to carry traffic. When the ACTV/STBY LED is amber, the DS3-12
card is operational and in standby (protect) mode.
Amber SF LED
The amber SF LED indicates a signal failure or condition such as port LOS.