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Back to Configuring SBC as P-CSCF

Back to Configuring SBC for IMS

Modified: for 5.0.1

Overview

The parameter PCRF Interaction Mode  is used to configure the Rx interface asynchronous mode .

In asynchronous interaction mode:

  • SBC sends INVITE message to egress after sending an AAR request. SBC continues with call processing without waiting for any response from the PCRF or time-out of the transaction.
  • The final AAR is sent after receiving the session answer even though the answer or time-out for the preliminary AAR is not received.

Configuring Rx interface asynchronous mode contains:

Basic Configuration

% set addressContext default diamNode rxNode primaryOriginHost <SBC.primary.origin.host> secondaryOriginHost <SBC.secondary.origin.host> ipInterfaceGroupName <Ip.InterfaceGroup.Name> ipV4Address <diamNode.IPV4.Address> ipV6Address <diamNode.IPV4.Address> originRealm <SBC.origin.realm> transactionTimeout 6000
% set addressContext default diamNode rxNode peer <Diam.Peer.Name> ipAddress <Diam.Peer.IpAddress> tcpPort <Diam.Peer.Port> fqdn <Peer.Fqdn>
% set addressContext default staticRoute <Diam.Peer.IpAddress> <Subnet.Mask> <Defaul.Gateway> <Ip.InterfaceGroup.Name> <Ip.Interface> preference 100
% set addressContext default diamNode rxNode realmRoute <Pcrf.realm.RouteName> realm <Pcrf.realm.Name> peer <Diam.Peer.Name> appId rx priority 0
% set addressContext default diamNode rxNode state enabled
% set addressContext default diamNode rxNode peer <Diam.Peer.Name> state enabled
% set addressContext default diamNode rxNode realmRoute <Pcrf.realm.RouteName> state enabled 
commit

Trunk Group Configuration

% set addressContext default zone ZONE_ACCESS sipTrunkGroup TG_ACCESS media pcrf pcrfRealm <Pcrf.realm.Name>
% set addressContext default zone ZONE_ACCESS sipTrunkGroup TG_ACCESS media pcrf pcrfCommitment supported
% set addressContext default zone ZONE_ACCESS sipTrunkGroup TG_ACCESS media pcrf cushionNullSdp enabled cushionPacketSize enabled
commit

PCRF Configuration

% set addressContext default zone ZONE_ACCESS sipTrunkGroup TG_ACCESS media pcrf pcrfInteractionMode asynchronous
% set addressContext default zone ZONE_ACCESS sipTrunkGroup TG_ACCESS media pcrf pcrfSendAarOnlyForSessionAnswer enabled
commit
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