I've dabbled with a few of the commercial VXML products out there (like Nuance, VoiceGenie, etc) and you just can't really do what you're looking for. It's called "speech transcribing", and some third-party vendors offer plugins for the voice servers to provide this capability, but even then it really sucks.

One workaround though (which also sucks) is to build a grammar and VXML document that queries for each letter, one after another, until the user says something like "done".

In reply to Re: How to make a form in VoiceXML (VXML) with input of the equivalent of input type="text" by LukeyBoy
in thread How to make a form in VoiceXML (VXML) with input of the equivalent of <input type="text"> by ice6200

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