Datasheet

Table Of Contents
4-9
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 4 Optical Cards
4.4 OC12 IR/STM4 SH 1310 Card
The OC12 IR/STM4 SH 1310 card provides one intermediate or short range SDH STM-4 port compliant
with ITU-T G.707 and ITU-T G.957. The port operates at 622.08 Mbps over a single-mode fiber span.
The card supports VC-4 and nonconcatenated or concatenated payloads at STM-1 and STM-4 signal
levels.
Warning
The laser is on when the optical card is booted. The port does not have to be in service for the laser
to be on.
Figure 4-3 shows the OC12 IR/STM4 SH 1310 faceplate and a block diagram of the card.
Figure 4-3 OC12 IR/STM4 SH 1310 Faceplate and Block Diagram
uP bus
uP
Flash
RAM
STS-12
Mux/
Demux
Optical
Transceiver
STM-4
Main SCI
Protect SCI
BTC
ASIC
STS-12
B
a
c
k
p
l
a
n
e
110870
FAIL
ACT
SF
STM-4IR
STM4SH
1310
1
Tx
Rx