PCRF Pool to PRT Mapping

In initial DSR release installations, PCRF Pools and PRT tables must be configured as part of configuring the PCA application. For initial installs and upgrades from releases in which PCA was not activated, the Default PCRF Pool is created and mapped to the Not Selected PRT.

When a PCRF Pool or Sub-Pool is added at the NOAMP, the data is replicated on the SOAM servers at each site. When a user opens the PCRF Pool to PRT Mapping page, a row is displayed for each configured PCRF Pool or Sub-Pool. If the PCRF Pool or Sub-Pool has already been mapped to a PRT, the mapping is shown. If the PCRF Pool or Sub-Pool has not yet been mapped, the PRT field shows Not Selected in red text.

Note: The screen does not automatically refresh if a new PCRF Pool or Sub-Pool is added at the NOAMP after the PCRF Pool to PRT Mappings screen is displayed at a given site.

In general, every PCRF Pool and Sub-Pool should be mapped to a PRT table, but there is an exception. If the network operator knows that binding-capable session initiation requests will never originate at that site from an APN (and optionally Origin-Host) that is mapped to that PCRF Pool or Sub-Pool.

A PCRF Pool or Sub-Pool that is deleted from the NOAMP GUI is not actually deleted, but rather retired. When a PCRF Pool or Sub-Pool is deleted from the NOAMP GUI, the entry disappears from the PCRF Pool to PRT Mapping GUI page at each site (the next time the screen is manually refreshed). If the PCRF Pool or Sub-Pool entry is restored (added again) at the NOAMP, the entry reappears on the PCRF Pool to PRT Mapping page, and it will have the same PRT choice as was previously configured, provided the PRT table still exists.

A Peer Route Table cannot be deleted from a site if that Peer Route Table is referenced by a current PCRF Pool to PRT Mapping entry. Entries for retired PCRF Pools or Sub-Pools are not included in this restriction. As a result, if a PCRF Pool A had a mapping to PRT table X, then PCRF Pool A was deleted at the NOAMP, it is possible to delete PRT X (provided no other active PCRF Pool to PRT Mappings referenced PRT X). If PCRF Pool A was added back at the NOAM after the deletion of PRT X, PCRF Pool A would appear on the PCRF Pool to PRT Mapping GUI with its PRT entry set to the default of Not Selected.

If a PCRF Pool or Sub-Pool is changed from being mapped to a PRT table to the -Select- value in the PRT pulldown menu, you might see a confirmation window that includes a warning of one of the following conditions applies:

If an APN is mapped to the PCRF Pool being changed, a confirmation window is displayed on the PCRF Pool to PRT Mapping page that warns that this PCRF Pool is being used by one or more APNs. You can choose to continue, but know that a call might fail at that site if a binding-capable session initiation request arrives with an APN that is mapped to that PCRF Pool.
If the PCRF Pool is included as a Sub-Pool in a PCRF Sub-Pool Rule, a confirmation window is displayed on the PCRF Pool to PRT Mapping page that warns that this PCRF Pool is being used by one or more PCRF Sub-Pool Rules. You can choose to continue, but know that a call might fail at that site if a binding-capable session initiation request arrives with an APN and Origin-Host that is mapped to that PCRF Sub-Pool.