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Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
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 SONET OC-12 port
compliant with ITU-T G.707, ITU-T G.957, and Telcordia GR-253-CORE. The port operates at
622.08 Mbps over a single-mode fiber span. The card supports VT, nonconcatenated (STS-1), or
concatenated (STS-3c, STS-6c, or STS-12c) payloads. Figure 4-3 shows the OC12 IR/STM4 SH 1310
faceplate and a block diagram of the card.
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.
Statement 293
Note The OC12 IR 1310 and OC12/STM4 SH 1310 cards are functionally the same.
Figure 4-3 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
a drop card or span card in a two-fiber BLSR, path protection, or ADM (linear) configuration.
The OC12 IR/STM4 SH 1310 card interface features a 1310-nm laser and contains a transmit and receive
connector (labeled) on the card faceplate. The OC12 IR/STM4 SH 1310 card uses SC optical
connections and supports 1+1 unidirectional and bidirectional protection.
uP bus
uP
Flash
RAM
STS-12
Mux/
Demux
Optical
Transceiver
OC-12
Main SCI
Protect SCI
BTC
ASIC
STS-12
B
a
c
k
p
l
a
n
e
61353
FAIL
ACT
SF
OC12IR
STM4SH
1310
1
33678 12931
Tx
Rx