Cisco Cisco ONS 15310-MA SONET Multiservice Platform Referencia técnica

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.

Cisco provides several ways to obtain documentation, technical assistance, and other technical 
resources. These sections explain how to obtain technical information from Cisco Systems.

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