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Gx Interface Support
Time of the Day Procedures: PCEF performs PCC rule request as instructed by the PCRF.
Important:
is successfully parsed only if its value corresponds to current time or a later time than the current IPSG time, else the
AVP and entire message is rejected. In earlier releases the AVP is successfully parsed only if its value corresponds to a
later time than the current IPSG time, else the AVP and entire message is rejected.
Charging Control
Charging Control is the process of associating packets belonging to a SDF to a charging key, and applying online
charging and/or offline charging, as appropriate. Flow-based charging handles differentiated charging of the bearer
usage based on real time analysis of the SDFs. In order to allow for charging control, the information in the PCC rule
identifies the SDF and specifies the parameters for charging control. The PCC rule information may depend on
subscription data.
In the case of online charging, it is possible to apply an online charging action upon PCEF events (for example, re-
authorization upon QoS change).
It is possible to indicate to the PCEF that interactions with the charging systems are not required for a PCC rule, that is
to perform neither accounting nor credit control for this SDF, and then no offline charging information is generated.
Supported Features:
Provisioning of Charging-related Information for the IP-CAN Session.
Provisioning of Charging Addresses: Primary or secondary event charging function name (Online Charging
Server (OCS) addresses or the peer names).
Provisioning of Default Charging Method: In this release, the default charging method is sent in CCR-I message.
For this, new AVPs Online/Offline are sent in CCR-I message based on the configuration.
Charging Correlation
rule(s) by including the Charging-Rule-Name AVP(s) or Charging-Rule-Base-Name AVP(s),
identifies the failed reason code by including a Rule-Failure-Code AVP, and includes the PCC-Rule-
Status AVP.
If the installation/activation of one or more new PCC rules (that is, rules that were not previously
successfully installed) fails, the PCEF sets the PCC-Rule-Status to INACTIVE for both the PUSH and
the PULL modes.
If a PCC rule was successfully installed/activated, but can no longer be enforced by the PCEF, the
PCEF sends the PCRF a new CCR command and include a Charging-Rule-Report AVP. The PCEF
includes the Rule-Failure-Code AVP within the Charging-Rule-Report AVP and sets the PCC-Rule-
Status to INACTIVE.
Revalidation-Time when set by the PCRF, causes the PCEF to trigger a PCRF interaction to request
PCC rules from the PCRF for an established IP CAN session. The PCEF stops the timer once the
PCEF triggers a REVALIDATION_TIMEOUT event.
In 11.0 and later releases, Rule-Activation-Time / Rule-Deactivation-Time / Revalidation-Time AVP
Important:
In this release, provisioning of primary or secondary charging collection function
name (Offline Charging Server (OFCS) addresses) over Gx is not supported.
Cisco ASR 5x00 Packet Data Network Gateway Administration Guide ▄
Rel. 7 Gx Interface ▀
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