Catch noinput in VoiceXML script

This is My Sample VXML file is :
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< ?xml version="1.0"?>

Please enter the Option. Press 1 to Accept. 2 to Exit. 3 to Replay. 1 | 2

Selected 1. Accepted.

Selected 2. Exit.

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In the above example, if the user presses 1 or 2, application is submitting the page. If input is timed out it is not calling why? Is
there any way to submit the page when the input is timed out?

Yes, you need to catch the exception of noinput. For example: