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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter3 Electrical Cards
3.2.1 E1-N-14 Card Functionality
Figure3-1 E1-N-14 Faceplate and Block Diagram
3.2.1 E1-N-14 Card Functionality
Each E1-N-14 port features ITU-T G.703 compliant outputs and inputs supporting cable los ses of up to
6 dB at 1024 kHz. The E1-N-14 card supports 1:N (N <= 4) protection. You can also provision the
E1-N-14 card to monitor line and frame errors in both directions.
The E1-N-14 card can function as a working or protect card in 1:1 or 1:N protection sc hemes. If you use
the E1-N-14 card as a standard E-1 card in a 1:1 protection group, you can install the E1-N-14 card in
Slots 1 to 6 and 12 to 17 on the ONS 15454 SDH . If you use the card’s 1:N functionality, you must install
an E1-N-14 card in Slot 3 (for bank A) or Slot 15 (for ba nk B).
You can group and map E1-N-14 card traffic in VC-12 as per ITU-T G.707 to any other card in an
ONS 15454 SDH node. For performance-monitoring purposes, you can gather bidirectional E-1
frame-level information (for example, loss of frame, parity errors, or cyclic redundancy check [CRC]
errors).
14 Line
Interface
Units
FLASH
DRAM
Protection
Relay
Matrix
uP
134371
BTC
ASIC
B
a
c
k
p
l
a
n
e
AU-3 to
14 E1
Mapper
AU-3 / STM-4
Mux/Demux FPGA
FAIL
ACT/STBY
SF
E1-N
14