Calls from Untrusted Source to Trusted Target

When calls are from an untrusted source to a trusted target and PPI is included in the INVITE sent to IP border elements, the Oracle® Enterprise Session Border Controller maps the PPI information to PAI in the outgoing INVITE to the trusted side (even if the Privacy header is set to id or to none). The Privacy and From headers get passed on unchanged.

IP border elements must pass PAI (if received in the ingress INVITE) and the From and Privacy headers to the egress side just as they were received on the ingress side.

The Oracle® Enterprise Session Border Controller maps the PPI to PAI by default, if the outgoing side is trusted. To change this behavior, you need to configure the disable-ppi-to-pai option.