Specifications

4-62
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 4 Card Reference
OC12 IR/STM4 SH 1310 Card
4.20 OC12 IR/STM4 SH 1310 Card
The OC12 IR/STM4 SH 1310 card provides one intermediate or short range SONET/SDH OC-12 port
compliant with the International Telecommunication Union’s G.707, G.957, and Telcordia’s GR-253.
The port operates at 622.08 Mbps over a single-mode fiber span. The card supports VT and
non-concatenated or concatenated payloads at STS-1, STS-3c, STS-6c or STS-12c signal levels.
Figure 4-22 shows the OC12 IR/STM4 SH 1310 faceplate and a block diagram of the card.
Note The OC12 IR 1310 and OC12/STM4 SH 1310 cards are functionally the same.
Figure 4-22 OC12 IR/STM4 SH 1310 faceplate and block diagram
You can install the OC12 IR/STM4 SH 1310 card in any multispeed or high-speed card slot and
provision the card as a drop card or span card in a two-fiber BLSR, UPSR, or in ADM (linear)
configurations.
The OC12 IR/STM4 SH 1310 port features a 1310 nm laser and contains a transmit and receive
connector (labeled) on the card faceplate. The OC12 IR/STM4 SH 1310 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