Use the PCRF window to configure parameters for a specified SIP trunk group that define how the SBC, acting as a P-CSCF, interacts with a Policy and Charging Rules Function (PCRF) server. Refer to Rx Interface and Rx Interface Support for more information on interaction with the PCRF. On the SBC main screen, go to Configuration > System Provisioning > Category: Trunk Provisioning > Trunk Group > SIP Trunk Group > SIP Trunk Advanced > SIP Trunk - Media - Advanced > Pcrf or The PCRF window is displayed. Use the drop-down boxes to select the specific Address Context, Zone and SIP Trunk Group you want to configure. Advanced Media - Pcrf Window Use the following table to change the values as needed and then click Save. Pcrf parameters: Parameter Description Pcrf Realm Specify the DIAMETER domain of the target Policy and Charging Rule Function (PCRF). The value ranges up to 128 characters. Pcrf Commitment Cushion Packet Size Enabled Cushion Null SDP Enable this option to allow an AAR when the initial call setup is an INVITE that lacks SDP (estimate G.711 10 msec as a worst case). Disable this option to wait for a reverse offer. Enable this option to allow the SBC to subscribe to the loss of signaling path events. Enable this option to allow the SBC to send a P-Access-Network-Info header. Specify whether the SBC terminates a call after receiving TEMPRARY_NETWORK_FAILURE in AAA. Specify whether the interaction with the PCRF is synchronous or asynchronous. Disabled (default) – SBC sends an AAR message after receiving an initial INVITE with a session offer or after receiving an initial INVITE without a session offer but after receiving a session answer (if the parameter Cushion Null SDP is enabled).To View and Edit PCRF Parameters
All > Address Context > Zone > SIP Trunk Group > Media > PcrfSpecify the degree of commitment expected from the PCRF during call setup or call update. Enable this option to use the smallest packet size in the range supported for each codec for bandwidth estimate. Disable this option to use the packet size in the offer. Signalling Path Fetch Location Info Specify whether the SBC requests location information. The options are: Prov Signaling Flow Terminate On Nw Failure Pcrf Interaction Mode Pcrf Send Aar Only For Session Answer Specify whether to send AAR messages only after receiving the session answer.