Offerless Bandwidth CAC for SIP
For SIP sessions offerless INVITEs (i.e., INVITEs that have no SDP offer), the Oracle® Enterprise Session Border Controller can reserved bandwidth and support the session if you set up applicable media profile associations in the global SIP configuration. Otherwise, the Oracle® Enterprise Session Border Controller terminates these sessions.
You configure support for offerless bandwidth CAC by setting up your global SIP configuration with the options parameters set to offerless-media-bw-profiles. The option takes multiple media profile names as values to apply when treating offerless INVITEs. When such an INVITE arrives and your configuration supports this option, the Oracle® Enterprise Session Border Controller checks and reserves bandwidth for the session. If there is insufficient bandwidth to reserve, the Oracle® Enterprise Session Border Controller terminates the session. Otherwise, the actual SDP negotiation takes place unaffected while the Oracle® Enterprise Session Border Controller forwards the offerless INVITE. Once the negotiation completes, the Oracle® Enterprise Session Border Controller updates bandwidth reservation.
If the called party’s actual bandwidth needs exceed available bandwidth, the Oracle® Enterprise Session Border Controller must terminate the session, even if the session is ringing or answered. To minimize this occurrence as much as possible, you should consider all case scenarios when you select media profiles to use with the offerless-media-bw-profiles option.
