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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 4 Optical Cards
4.11.1 OC192 SR/STM64 IO 1310 Card Functionality
Figure 4-18 shows a block diagram of the card.
Figure 4-18 OC192 SR/STM64 IO 1310 Block Diagram
4.11.1 OC192 SR/STM64 IO 1310 Card Functionality
You can install OC192 SR/STM64 IO 1310 cards in Slot 5, 6, 12, or 13. You can provision this card as
part of an MS-SPRing, a SNCP, a linear configuration, or a regenerator for longer span reaches.
The OC192 SR/STM64 IO 1310 port features a 1310-nm laser and contains a transmit and receive
connector (labeled) on the card faceplate. The card uses a dual SC connector for optical cable
termination. The card supports 1+1 unidirectional and bidirectional facility protection. It also supports
1:1 protection in four-fiber bidirectional line switched ring applications where both span switching and
ring switching might occur.
The OC192 SR/STM64 IO 1310 card detects SF, LOS, or LOF conditions on the optical facility. Refer
to the Cisco ONS 15454 SDH Troubleshooting Guide for a description of these conditions. The card also
counts section and line BIP errors from B1 and B2 byte registers in the section and line overhead.
4.11.2 OC192 SR/STM64 IO 1310 Card-Level Indicators
Table 4-12 describes the three card-level LED indicators on the OC192 SR/STM64 IO 1310 card.
Demux
CDR
Flash SRAM
Optical
transceiver
ADC x 8
Demux
BTC
ASIC
STM-64/
OC-192
STM-64/
OC-192
STM-64 / OC192
STM-64 / OC192
SCL
Processor
B
a
c
k
p
l
a
n
e
Mux
CK Mpy
Optical
transceiver
Mux
SCL