Considerations for Reg-Via-Key and Port Mapping

When you set the reg-via-proxy option, the Oracle® Enterprise Session Border Controller includes the bottom Via header from received requests in the registration cache Via Key. The system also uses it for determining whether or not the request matches a registration cache entry. Each unique bottom Via received a unique mapping port when you turn SIP port mapping on and set the SIP interface with the reg-via-key=all option.