Basic RFC 2833 Negotiation Support

If H.323 or session agents on either side of the call are configured for preferred 2833 support, the Oracle® Enterprise Session Border Controller supports end-to-end signaled negotiation of DTMF on a call-by-call basis. If the calling party is not configured for preferred support but sends 2833, the Oracle® Enterprise Session Border Controller sends 2833 to the next-hop called party. If the calling party sends H.245 signals or alphanumeric UII, the Oracle® Enterprise Session Border Controller sends H.245 signals or alphanumeric UII to the next-hop called party (if it is an H.323 next-hop).

The Oracle® Enterprise Session Border Controller also supports hop-by-hop negotiation of DTMF capability on a call-by-call basis, if the signaling protocols or session agents on either side of the call are configured for preferred 2833 support.