Public carriers
prefer and often require standards based products to facilitate interoperability and to
ensure they are not dependent on a single supplier.
Resilient Packet Ring (RPR) 357
When Does this Solution Fit?
RPR is not normally applied as a service or technology by itself. RPR??™s primary role comes
into play at the first point where customers are aggregated at central facilities owned by
the service provider. It makes the access from business and consumers more robust and
ensures that subscribers SLAs are enforced and maintained. Aggregation could occur at a
DSLAM for DSL subscribers, a CMTS for cable subscribers, an ADM for SONET/SDH access,
PON for new fiber builds or a L2/L3 Ethernet switch for Ethernet access. Any of these
technologies can be aggregated onto an RPR ring. In addition many private Enterprise
networks are built on RPR rings using the technologies mentioned above, however, the
facilities are wholly owned by the Enterprise rather than by the service provider. As such
they are dedicated to a single company and not shared among many customers.
Terminating these access technologies into an RPR network provides a number of
benefits for the customer of TDM and data services.
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