Translating H.245 UII to 2833 for H.323 Calls

A majority of H.323 endpoints are not version 4 H.323 compliant and do not support RFC 2833 for DTMF transfer. However, some networks include version 4 H.323 devices that require the DTMF events to be signaled in 2833 packets. Network-based version 4 H.323 gateways use RFC 2833 instead of H.245 UII. (Version 4 H.323 devices should support H.245 UII.)

The Oracle® Enterprise Session Border Controller translates 2833 to H.245 UII for H.323-to-H.323 calls when one side is a version 4 H.323 device requiring RFC-2833 DTMF event packets, and the other side is a pre-version 4 H.323 device which only uses H.245 UII.

The Oracle® Enterprise Session Border Controller can translate H.245 UII to RFC2833 and back, based on the admin configuration and H.245 TCS exchanges. This translation enables DTMF to work end-to-end.