user manual

4-40
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 4 Optical Cards
4.14.1 OC192 LR/STM64 LH ITU 15xx.xx Card Functionality
Figure 4-24 OC192 LR/STM64 LH ITU 15xx.xx Block Diagram
4.14.1 OC192 LR/STM64 LH ITU 15xx.xx Card Functionality
You can install OC192 LR/STM64 LH ITU 15xx.xx cards in Slot 5, 6, 12, or 13. You can provision this
card as part of an MS-SPRing, SNCP, or linear configuration, or as a regenerator for longer span reaches.
Eight of the OC192 LR/STM64 LH ITU 15xx.xx cards operate in the blue band with a spacing of 100
GHz in the ITU grid (1534.25 nm, 1535.04 nm, 1535.82 nm, 1536.61 nm, 1538.19 nm, 1538.98 nm,
1539.77 nm, and 1540.56 nm). The other eight cards operate in the red band with a spacing of 100 GHz
in the ITU grid (1550.12 nm, 1550.92 nm, 1551.72 nm, 1552.52 nm, 1554.13 nm, 1554.94 nm,
1555.75 nm, and 1556.55 nm).
The OC192 LR/STM64 LH ITU 15xx.xx port features a laser on a specific wavelength in the 1550-nm
range 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 BLSR applications where both span
switching and ring switching might occur.
The OC192 LR/STM64 LH ITU 15xx.xx 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.
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
63121
B
a
c
k
p
l
a
n
e
Mux
CK Mpy
Optical
transceiver
Mux
SCL