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Cisco ONS 15454 Reference Manual, R4.1.x and 4.5
October 2003
Chapter 3 Electrical Cards
DS3-12 and DS3N-12 Cards
3.5.2 DS3-12 and DS3N-12 Slots and Connectors
You can install the DS3-12 or DS3N-12 card in Slots 1 to 6 or 12 to 17 on the ONS 15454. Each DS3-12
or DS3N-12 card port features DSX-level outputs supporting distances up to 137 m (450 ft) depending
on facility conditions. With the proper backplane EIA, the card supports BNC or SMB connectors. See
“Electrical Card Protection and the Backplane” section on page 4 for more information about electrical
card slot protection and restrictions.
3.5.3 DS3-12 and DS3N-12 Faceplate and Block Diagram
Figure 3-4 shows the DS3-12 faceplate and a block diagram of the card.
Figure 3-4 DS3-12 Faceplate and Block Diagram
BTC
ASIC
DS3A
ASIC
Protection
Relay
Matrix
B
a
c
k
p
l
a
n
e
12
Line
Interface
Units
FAIL
ACT/STBY
SF
DS3
12
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