H.225
When in H.225 proxy mode, the Oracle® Enterprise Session Border Controller only proxies call signaling (H.225 messages). The call control (H.245 messages) and the media associated with the session do not go through the Oracle® Enterprise Session Border Controller. Instead, they flow directly between the two H.323 endpoints.
Note:
H.225 proxy mode is only used in specific applications and should not be enabled without consultation from your Acme Packet Systems Engineer.The following diagram shows the flow.
![](img/GUID-273DA5A0-6DA8-42FD-A604-F1581A25F256-default.png)
In certain deployments, the call control message and media are exchanged between the two H.323 endpoints themselves. When the Oracle® Enterprise Session Border Controller is in H.225 proxy mode, any tunneled H.245 message on the ingress side is tunneled in the egress side; this is irrespective of the value configured in the value you set for the h.245-tunneling parameter in the H.323 stack configuration.