Cisco Cisco ONS 15600 SDH Multiservice Provisioning Platform (MSPP)

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.

Release notes contain the new features and enhancements for the Cisco ONS 15600 and . For detailed 
information regarding features, capabilities, hardware, and software introduced with this release, refer to 
Release 9.0 of the Cisco ONS 15600 Procedure Guide, Cisco ONS 15600 Reference Manual, Cisco 
ONS SONET TL1 Command Guide, 

and Cisco ONS 15600 Troubleshooting Guide. For the latest version of 

the Release Notes for Cisco ONS 15600 Release 9.0, visit the following URL:

Cisco also provides Bug Toolkit, a web resource for tracking defects. To access Bug Toolkit, visit the 
following URL: