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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 4 Optical Cards
4.3 OC3 IR/STM1 SH 1310-8 Card
Figure 4-4 shows a block diagram of the OC3 IR/STM1 SH 1310-8 card.
Figure 4-4 OC3 IR/STM1 SH 1310-8 Block Diagram
You can install the OC3IR/STM1 SH 1310-8 card in Slots 1 to 4 and 14 to 17. The card can be
provisioned as part of an SNCP or in an (ADM) configuration. Each interface features a 1310-nm laser
and contains a transmit and receive connector (labeled) on the card faceplate. The card uses LC
connectors on the faceplate, angled downward 12.5 degrees.
The OC3IR/STM1 SH 1310-8 card supports 1+1 unidirectional and bidirectional protection switching.
You can provision protection on a per port basis.
The OC3IR/STM1 SH 1310-8 card detects loss of signal (LOS), loss of frame (LOF), loss of pointer
(LOP), multiplex section alarm indicator signal (MS-AIS), and multiplex section far-end receive failure
(MS-FERF) conditions. Refer to the Cisco ONS 15454 SDH Troubleshooting Guide for a description of
these conditions. The card also counts section and line bit interleaved parity (BIP) errors.
To enable an MSP-SPRing, the OC3 IR/STM1 SH 1310-8 card extracts the K1 and K2 bytes from the
SDH overhead to perform appropriate protection switches. The OC3IR/STM1 SH 1310-8 card supports
full GCC connectivity for remote network management.
uP bus
uPFlash RAM
B
a
c
k
p
l
a
n
e
Optical
Transceiver #1
Optical
Transceiver #2
Optical
Transceiver #3
Optical
Transceiver #4
83643
BPIA RX
Prot
BPIA RX
Main
BPIA TX
Prot
BPIA TX
Main
OCEAN
ASIC
STM-1
STM-1
STM-1
STM-1
Optical
Transceiver #5
Optical
Transceiver #6
Optical
Transceiver #7
Optical
Transceiver #8
STM-1
STM-1
STM-1
STM-1