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Preface
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.
This section explains the objectives, intended audience, and organization of this publication and
describes the conventions that convey instructions and other information.
This section provides the following information:
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Obtaining Optical Networking Information
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Obtaining Documentation and Submitting a Service Request
Revision History
Date
Notes
November 2009
•
Updated the section “NTP-H189 View Shelf Temperature” in the chapter
“Install the Cisco ONS 15310-MA SDH”.
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Updated the section “NTP-H140 Create a Server Trail” in the chapter, “Create
Circuits and VC Low-order Path Tunnels”.
December 2009
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Updated the fan tray caution in the section “NTP-H152 Install the Fan-Tray
Assembly” in the chapter “Install the Cisco ONS 15310-MA SDH”.
January 2010
Updated the “Add a Path Protection Node” procedure in Chapter 13, “Add and
Remove Nodes”.
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