Specifications

4-41
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 4 Card Reference
DS1N-14 Card
4.13 DS1N-14 Card
The DS1N-14 card provides 14 Telcordia-compliant, GR-499 DS-1 ports. Each DS1N-14 port operates
at 1.544 Mbps over a 100 ohm twisted-pair copper cable. Figure 4-15 shows the DS1N-14 faceplate and
a block diagram of the card.
Figure 4-15 DS1N-14 faceplate and block diagram
Each DS1N-14 port features DSX-level outputs supporting distances up to 655 feet depending on facility
conditions.
The DS1N-14 card supports 1:N (N<
5) protection with the proper backplane EIA and wire-wrap or AMP
Champ connectors. You can also provision the DS1N-14 to monitor line and frame errors in both
directions.
The DS1N-14 card can function as a working or protect card in 1:1 or 1:N protection schemes. If you
use the DS1N-14 as a standard DS-1 card in a 1:1 protection group, you can install the DS1N-14 card in
any multispeed or high-speed card slot on the ONS 15454. If you use the card’s 1:N functionality, you
must install a DS1N-14 card in Slots 3 and 15.
You can group and map DS1N-14 card traffic in STS-1 increments to any other card in an ONS 15454
node. Each DS-1 is asynchronously mapped into a SONET VT1.5 payload and the card carries a DS-1
payload intact in a VT1.5. For performance-monitoring purposes, you can gather bidirectional DS-1
frame-level information (loss of frame, parity errors or CRC errors, for example).
14 Line
Interface
Units
STS1 to
14 DS1
Mapper
FLASH
DRAM
Mux/Demux ASIC
Protection
Relay
Matrix
STS-1 / STS-12
uP
61346
BTC
ASIC
B
a
c
k
p
l
a
n
e
FAIL
ACT/STBY
SF
DS1N-
14
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