4-6
Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Chapter 4 Optical Cards
4.2 OC3 IR 4/STM1 SH 1310 Card
4.2 OC3 IR 4/STM1 SH 1310 Card
Note For hardware specifications, see the “A.6.1 OC3 IR 4/STM1 SH 1310 Card Specifications” section on
page A-28. See Table 4-2 on page 4-5 for optical card compatibility.
The OC3 IR 4/STM1 SH 1310 card provides four intermediate or short range SONET/SDH OC-3 ports
compliant with ITU-T G.707, ITU-T G.957, and Telcordia GR-253-CORE. Each port operates at
155.52 Mbps over a single-mode fiber span. The card supports Virtual Tributary (VT), nonconcatenated
(STS-1), or concatenated (STS-1 or STS-3c) payloads. Figure 4-1 shows the OC3 IR 4/STM1 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 OC3 IR 4 SH 1310 and OC3 IR 4/STM1 SH 1310 cards are functionally the same.
Figure 4-1 OC3 IR 4/STM1 SH 1310 Faceplate and Block Diagram
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