IWF Privacy Extensions for Asserted Identity in Untrusted Networks

For IWF privacy, the Oracle® Enterprise Session Border Controller supports:

• IWF caller privacy on unsecure networks—A variant of RFC 3325, where the P-Asserted-Id is inserted when the presentation indicator is set to allowed. This feature enables bi-directional SIP/H.323 IWF support for CPID hiding by using the presentation indicators in the Calling Party Number information element forH.323 signaling, and RFC 3325-based privacy support for SIP signaling. It allows the Oracle® Enterprise Session Border Controller to insert the P-Asserted-Identity and the Privacy header in the INVITE when the presentation indicator is set to restricted.

  The presence, or absence, of P-Asserted-Identity and Privacy headers in the SIP INVITE informs the remote SIP proxy or endpoint to either block or advertise the CPID.

• IWF caller privacy on secure connections—When the H.323 endpoint sends a SETUP with presentation indicator set to allowed, the Oracle® Enterprise Session Border Controller does not insert the P-Asserted-Identity in the INVITE. The SIP INVITE needs the P-Asserted-Identity header to support calling line identification presentation (CLIP) to calling line identification restriction (CLIR) in an IP multimedia subsystem (IMS) solution. This feature allows the Oracle® Enterprise Session Border Controller to insert the P-Asserted-Identity in the INVITE when the presentation indicator is set to allowed.

Now the Oracle® Enterprise Session Border Controller supports an enhancement to IWF caller privacy where the P-Preferred-Identity is inserted instead of the P-Asserted-Identity.

In this implementation, when the incoming H.323 Setup message has a presentation indicator set to restricted and the ingress H.323 session agent has the new PPreferredId option configured, the Oracle® Enterprise Session Border Controller sends the Privacy header with P-Preferred-Identity (instead of P-Asserted-Identity).