defaultVpa
The default VPA: this is the VPA that will be invoked when the "Push-To-Talk" button is pressed. An empty value indicates that no VPA will be invoked (the "Push-To-Talk" button is disabled).
The default VPA: this is the VPA that will be invoked when the "Push-To-Talk" button is pressed. An empty value indicates that no VPA will be invoked (the "Push-To-Talk" button is disabled).