3-19
Cisco ONS 15454 Reference Manual, R7.0
78-17191-01
Chapter 3 Electrical Cards
3.7 3.7.1 DS3i-N-12 Slots and Connectors
Figure 3-8 DS3i-N-12 Faceplate and Block Diagram
The following list summarizes the DS3i-N-12 card features:
Provisionable framing format (M23, C-bit, or unframed)
Autorecognition and provisioning of incoming framing
VC-3 payload mapping as per ITU-T G.707, mapped into VC-4 and transported as STS-3c
Idle signal (“1100”) monitoring as per Telcordia GR-499-CORE
P-bit monitoring
C-bit parity monitoring
X-bit monitoring
M-bit monitoring
F-bit monitoring
Far-end block error (FEBE) monitoring
Far-end alarm and control (FEAC) status and loop code detection
Path trace byte support with TIM-P alarm generation
134365
B
a
c
k
p
l
a
n
e
DS3
ASIC
Flash
uP bus
SDRAM
BTC
ASIC
Line
Interface
Unit #1
main DS3-m1
protect DS3-p1
Line
Interface
Unit #1
main DS3-m12
protect DS3-p12
Processor
OHP
FPGA
BERT
FPGA
FAIL
ACT/STBY
SF
DS3I- N
12