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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 4 Optical Cards
4.4 OC12 IR/STM4 SH 1310 Card
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. Figure 4-5 shows the OC12 IR/STM4 SH 1310 faceplate and a block diagram of the card.
Figure 4-5 OC12 IR/STM4 SH 1310 Faceplate and Block Diagram
You can install the OC12 IR/STM4 SH 1310 card in Slots 1 to 6 and 12 to 17 and provision the card as
part of an MSP-SPRing or subnetwork connection protection (SNCP) ring. In ADM configurations, you
can provision the card as either an access tributary or a transport span (trunk) side interface.
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