3.4 Basic Call Control in Asynchronous Mode

This section describes and illustrates the basic call model and state transitions for call control in asynchronous mode. This section also describes the process for call establishment for both inbound and outbound calls and call termination in the asynchronous mode.

The procedures for establishing and terminating calls in the asynchronous mode are described in the following sections:

• Inbound Calls in Asynchronous Mode
• Outbound Calls in Asynchronous Mode
• Call Termination in Asynchronous Mode

Note: The Advanced Call Model includes call states associated with holding, retrieving and transferring calls. See Section 3.6, "Advanced Call Control with Call Hold and Transfer" for more information.

Caution: In general, when a function is called in asynchronous mode, and an associated termination event exists, the gc_Close( ) function should not be called until the termination event has been received. Otherwise, the behavior is undefined.

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