6.2.4 GWCall::callPSTNOffered

The application waits for either a GCEV_CONNECTED or a GCEV_ALERTING event from the IP.

In the case of a GCEV_CONNECTED event, the application calls processEvent(USR_ANSWER) from the PSTNCallControl module and the call state transitions to callIPConnected.

In the case of a GCEV_ALERTING event, the application calls processEvent(USR_ACCEPT) from the PSTNCallControl module and the call state transitions to callPSTNAccepting.

If the application receives a GCEV_CALLPROC or a GCEV_PROCEEDING event, it ignores the event and remains in the callPSTNOffered state.

If the application receives a GCEV_DISCONNECTED or a GCEV_TASKFAIL event, it sets the drop reason by calling getResultValue( ) from the GCCallControl module. The application then calls processEvent(USR_DISCONNECT) from the IPCallControl module if the PSTN was the event source, or from the PSTNCallControl module if the IP was the event source. The call state transitions to callDropping.

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