The PlayPrompt action can be interruptible or force played. Force played means the prompt is always played through to the end. If you do not specify force play, the caller can interrupt the prompt by pressing a DTMF key. You can specify that the caller can use any DTMF key to interrupt the prompt, or that they can use only one of a set of keys that you define.
The caller can also interrupt the prompt by speaking. For more information on this, see Voice interrupt detection.
The PlayVoiceFromHost action can also be interruptible or force played. In addition, you can specify that it can either be interrupted by any key or only by the Pause and Stop Keys.
During the PlayAudioName, PlayUserGreeting, PlayVoiceSegment, and PlayVoiceMessage, the following keys are available to the caller: Forward Key (default value 9), Pause Key (default value 8), Reverse Key (default value 7) and Stop Key (default value *). These values can be changed by resetting the system parameters in the Application Server Interface parameter group.