For alphanum grammars you can use a form element and fill in the setting
Voice Grammar to point to the URL of a grammar file (for example
http://mediaserver.com/grammars/alphanum.grxml). But, you'll have to
purchase the alphanum grammar from Nuance or someone, it's not an easy
for the recognizer to get it right.



Cisco Developer Community Forums wrote:
> CHARLES SMITH has created a new message in the forum "General
> Discussion - All Versions":
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> Studio provides built in elements to capture numeric input via ASR. Is
> there an element that will do this with alphanumeric input as well? I
> need to capture a string that could contain numbers and letters. This
> is using Nuance Recognizer 9.0.
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I have OSR grammar examples, but not Nuance. What version of Nuance are
you using?

Alphanumeric speech collection is one of the most difficult for a
recognizer to get right. Many of the letters sound alike (example, A, E,
C, B, D, G). It helps if you know the number of characters/digits and if
you know which positions are numbers vs. which are letters. Also if any
of the positions are constrained (like position one is A thru E,
position 2 is a digit, etc).


Cisco Developer Community Forums wrote:
> CHARLES SMITH has created a new message in the forum "General
> Discussion - All Versions":
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> That is what I lead myself to believe and you have just confirmed it.
> Do you have any recomendations on resources for grammar files other
> than Nuance? Maybe some free examples that you have used in the past.
> I guess my first step is to take a crack at designing my own grammar
> before I turn to Nuance for it.
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