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Cisco ONS 15454 SDH Reference Manual, R8.0
August 2012
About this Manual
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:
• Revision History
• Document Objectives
• Audience
• Related Documentation
• Document Conventions
• Obtaining Optical Networking Information
• Obtaining Documentation and Submitting a Service Request
Revision History
Date Notes
March 2007 Added the Revision History table.
April 2007
• Changed fuse rating and power consumption specifications in Appendix A.
• Added note to indicate the support for LO circuits in SNCP in XC-VXC-10G
card in the “Common Control Cards” chapter.
May 2007 Added OC48 IR/STM16 SH AS 1310 card information in the “Optical Cards”
chapter and Appendix A.
August 2007 Updated the note in the SNCP Circuits section of the Circuits and Tunnels chapter.