SIP B2BUA and L3 L5 NAT

For each SIP session, the Oracle® Enterprise Session Border Controller establishes NAPT translations and re-writes SDP to route all session related media through the Oracle® Enterprise Session Border Controller. These actions make the Oracle® Enterprise Session Border Controller look like a SIP gateway. Also, the Oracle® Enterprise Session Border Controller support of multiple SIP interfaces associated with different network interfaces makes it appear as multiple virtual SIP gateways.

This functionality enables the Oracle® Enterprise Session Border Controller to deliver VoIP services to multiple end users, across a VPN backbone.