RFC 2833 to RFC 2833

When the SDP offer and answer sides of a call both support RFC 2833, the Oracle® Enterprise Session Border Controller forwards RFC 2833 messages between both sides of the call. No processing is used to transform these DTMF-indication massages to another format.

Note:

When the audio stream is transcoded, DTMF audio is completely removed from the audio stream.

A SIP INFO message received from either the offerer or answerer is forwarded unconverted to the other side of the call.

If there is no audio transcoding enabled for this call, and the egress side is set to dual, a received SIP INFO message will not be converted to both RFC 2833 and SIP INFO messaged for sending to the other side of the call.

If DTMF audio tones are received from either the offerer or answer, they are forwarded unconverted to the other side (when the audio portion of the call is not transcoded).