Specifications

4-59
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 4 Card Reference
OC3 IR 4/STM1 SH 1310 Card
4.19 OC3 IR 4/STM1 SH 1310 Card
The OC3 IR 4/STM1 SH 1310 card provides four intermediate or short range SONET/SDH OC-3 ports
compliant with the International Telecommunication Union’s G.707, G.957, and Telcordia’s GR-253.
Each port operates at 155.52 Mbps over a single-mode fiber span. The card supports VT and
non-concatenated or concatenated payloads at the STS-1 or STS-3c signal levels. Figure 4-21 shows the
OC3 IR 4/STM1 SH 1310 faceplate and a diagram of the card.
Note The OC3 IR 4 SH 1310 and OC3 IR 4/STM1 SH 1310 cards are functionally the same.
Figure 4-21 OC3 IR 4/STM1 SH 1310 faceplate and block diagram
You can install the OC3 IR 4/STM1 SH 1310 card in any multispeed or high-speed card slot. The card
can be provisioned as part of a unidirectional path switched ring (UPSR) or in a linear add-drop
multiplexer (ADM) configuration. Each port features a 1310 nm laser and contains a transmit and
receive connector (labeled) on the card faceplate. The card uses SC connectors.
The OC3 IR 4/STM1 SH 1310 card supports 1+1 unidirectional or bidirectional protection switching.
You can provision protection on a per port basis. See the “Optical Card Protection” section on page 4-15,
for more information.
uP bus
uP
Flash
RAM
BTC
ASIC
B
a
c
k
p
l
a
n
e
STS-12
STS-12/
STS-3
Mux/Demux
Optical
Transceiver
Optical
Transceiver
Optical
Transceiver
Optical
Transceiver
STS-3
termination/
framing
STS-3
termination/
framing
STS-3
termination/
framing
STS-3
termination/
framing
OC-3
61352
1
33678 12931
Tx
Rx
2
Tx
Rx
4
Tx
Rx
3
Tx
Rx
FAIL
ACT
SF
OC3IR4
STM1SH
1310