H.245 Stage

The Oracle® Enterprise Session Border Controller allows you to set the earliest stage in an H.323 call when the Oracle® Enterprise Session Border Controller initiates the procedure to establish an H.245 channel for the call. If you have enabled H.245 tunneling by setting the h245-tunneling parameter to enabled, then you do not need to configure your system for this feature.

The Oracle® Enterprise Session Border Controller initiates the H.245 procedure by either:

• Sending its H.245 address, or
• Creating a TCP connection to an H.245 address that it has received

You can set this parameter to any of the following stages of an H.323 call: setup, proceeding, alerting, connect, early, facility, noh245, and dynamic. With the exception of early, noh245, and dynamic, these values correspond to types of H.225/Q.931 messages. The dynamic value is described in detail in the next section.

When you configure the early value, your Oracle® Enterprise Session Border Controller begins the H.245 procedure at the time the Setup message is sent or received, or when the Connect message is received.

While these values allows for some flexibility about when the H.245 process is started, they are inherently static. All calls in the H.323 stack configuration use the same value, and it cannot be changed from call to call on that stack.