Sample 2 In-band Ringback with Progress Message
This sample flow shows how the Oracle® Enterprise Session Border Controller handles a call that requires the IWF where there is a progress message. In this call flow, there is a progress indicator of eight (8), meaning that ringback is in-band.
For this call flow, you can see again that the Oracle® Enterprise Session Border Controller maps the progress indicator included in the alerting message sent from Phone 1 through H.323 GW2 to a SIP 180 message with SDP. Note that now the Progress message contains the progress indicator.
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