It's been a while since I did this, but I think it's the Generic Recognition Step. It could also probably be done with the Simple Recognition step, but I think that one is more for when the user is making a selection from a set of choices. I say probably, because technically, saying a date is making a selection from a set of all of the dates which have ever existed. But, I think you can see how that might not work.
Have you read the step reference guide?
http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/crs/express_9_0/programming/guide/SeriesVol2.pdf
This is a subject which does not get talked about often on these forums. I wish more people used it, and then we'd have more discussions about it. In my opinion, I think that it's just too complicated, expensive, and the masses just are not ready for it yet. I've used a few ASR systems personally, and I always feel more comfotable just pressing the digits. That's me though.
Good luck.
Anthony Holloway
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