Codec Request Change from the SIP Side

When a SIP party requests a code change, the Oracle® Enterprise Session Border Controller communicates with the H.323 endpoint to renegotiate support for an updated codec. In this renegotiation, the Oracle® Enterprise Session Border Controller presents codec for use ordered according to the SIP side’s preference and one is selected. Then the Oracle® Enterprise Session Border Controller handles opening of a new logical channel that uses the updated codec, and closes the old logical channel (that uses the now-outdated codec). On the SIP side, the Oracle® Enterprise Session Border Controller sends a 200 OK with the necessary RTP port and codec information for the new logical channel.