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IMPORTANT

The Transparency Profile is the recommended method of configuring transparency on the SBC Core for new deployments as well as when applying additional transparency configurations to existing deployments. Do not use IP Signaling Profile flags in these scenarios because the flags will be retired in upcoming releases.

Refer to the SBC SIP Transparency Implementation Guide for additional information.

To configure downstream forking with dialog transparency, use the steps below:

  1. Enable dialogTransparency on both ingress and egress Zones:

    set addressContext <ingress_ac_name> zone <ingress_zone_name> dialogTransparency enabled
set addressContext <egress_ac_name> zone <egress_zone_name> dialogTransparency enabled
commit

  2. Enable downstreamForkingSupport on the egress Trunk Group and set forkingBehaviour to "lastProvResponse":

    set addressContext <egress_ac_name> zone <egress_zone_name> sipTrunkGroup <egress_tg_name> downstreamForkingSupport enable
set addressContext <egress_ac_name> zone <egress_zone_name> sipTrunkGroup <egress_tg_name> media earlyMedia forkingBehaviour lastProvResponse
commit

Note

The SBC exposes multiple early dialogs on the ingress if multiple early dialogs are present on the egress due to downstream forking.

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