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CHAPTER
2-1
Cisco ONS 15454 DWDM Engineering and Planning Guide, Release 7.x
July 2006
2
Cards Specifications
This chapter contains specific information about cards for dense wavelength division multiplexing
(DWDM) applications in the Cisco ONS 15454.
Note The terms "Unidirectional Path Switched Ring" and "UPSR" may appear in Cisco literature. These terms
do not refer to using Cisco ONS 15xxx products in a unidirectional path switched ring configuration.
Rather, these terms, as well as "Path Protected Mesh Network" and "PPMN," refer generally to Cisco's
path protection feature, which may be used in any topological network configuration. Cisco does not
recommend using its path protection feature in any particular topological network configuration.
The following topics are covered in this chapter:
• 2.1 Card Overview, page 2-1
• 2.2 Card Specifications, page 2-12
2.1 Card Overview
Redundant TCC2 and TCC2P cards are required to operate the Cisco ONS 15454. If you are using an
ETSI (SDH) shelf assembly, the MIC-A/P and MIC-C/T/P front mount electrical connections (FMECs)
are also required. The optional AIC-I card provides external alarms and controls (environmental alarms).
Each DWDM card is marked with a symbol that corresponds to a slot (or slots) on the ONS 15454 shelf
assembly. These cards can only be installed into slots displaying the same symbols.
ONS 15454 DWDM cards are grouped into the following categories:
• Optical service channel OSC) cards provide bidirectional channels that connect all the ONS 15454
DWDM nodes and transport general-purpose information without affecting the client traffic.
ONS 15454 OSC cards include the Optical Service Channel Module (OSCM) and the Optical
Service Channel and Combiner/Separator Module (OSC-CSM).
• Optical erbium-doped fiber amplifier (EDFA) cards are used in amplified DWDM nodes, including
hub nodes, amplified OADM nodes, and line amplified nodes. Optical amplifier cards include the
Optical Preamplifier (OPT-PRE) and Optical Booster (OPT-BST).
• Dispersion compensation units (DCUs) are installed in the ONS 15454 dispersion compensation
shelf when optical preamplifier cards are installed in the DWDM node. Each DCU module can
compensate a maximum of 65 km of single-mode fiber (SMF-28) span. DCUs can be cascaded to
extend the compensation to 130 km.