PCRF – Policy and Charging Rules Function
The PCRF is a policy decision point for subscriber data flows in the network. Using inputs from other network nodes, the PCRF will formulate rules which control how traffic flows (required QoS, restrictions, throttling, blocking, billing, etc) over the network down to individual subscriber granularity. The PCRF passes these rules to the PCEF (Policy and Charging Enforcement Function).
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