3.5 Basic Call Control in Synchronous Mode

This section describes and illustrates the basic call model and state transitions for call control in the synchronous 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 synchronous mode are described in the following sections:

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

The application must handle unsolicited events in the synchronous mode, unless these events are masked or disabled. Procedures for handling unsolicited events are described in Section 3.5.4, "Handling Unsolicited Events".

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