Hi,

I have a doubt in using h245-tunneling flag.

Following has been added in H323 Version-4: If the called entity does not yet know if H.245 tunneling can be supported, it shall include the provisionalRespToH245Tunneling flag. This may happen, for example, when a Gatekeeper is responding to a calling entity with a message such as Call Proceeding before the called endpoint responds to the h245Tunneling flag. The provisionalRespToH245Tunneling flag effectively eliminates the meaning of the h245Tunneling flag in a message and the flag shall thus be ignored by the receiving endpoint.

I want to know how to take care of the same in h323 version-3.

The Scenario is as follows: 1. Calling endpoint sends a Setup (h245 tunneling = TRUE) message to a gatekeeper. 2. Gatekeeper forwards the Setup (h245 tunneling = TRUE) message to the called endpoint and sends a CallProceeding (h245 tunneling = TRUE) message to the calling endpoint. 3. Called endpoint sends a Alerting (h245 tunneling = False) to the gatekeeper, and gatekeeper forwards this message to the calling endpoint.

H245 signaling is direct between the endpoints.

After step # 3, what should be the behaviour of the Calling Endpoint? How the H245 signaling would be completed?

Thanks & Regards, Sachin Srivastava