[VoIP] Speech recognition demo

[John R. Covert]

I figured out the problem with calls via the NYC(212) access number.
Seems a new feature in Asterisk is that the Answer() application
now takes milliseconds of delay before answer as an argument.

I had sometimes used it like Noop(${CALLERID}) to print things
out in the console log.  Canna do that anymore.  The offending
stuff will be removed within half an hour, as soon as I drive
to the classroom.

I find it hard to believe that it's the UK version of english
that's causing trouble recognizing "8" and "7".  I'd find it
more likely that the problem might be using a GSM or other
highly compressed codec.  Speech recognition requires very
good voice quality.  Most systems really suck from my GSM
mobile, for example.  I mean really, unless you're saying
"8" like "ite" (The rain in Spain falls mainly on the plain,
yadada-dada...).  And I can't see how "7" could differ.
There's a Brit sitting next to me in class.  I'll have him
try a few things.

I'll approach Dirk Tostmann on behalf of our group, and see if
we can get some sort of group license for digits only in
return for something that costs us nothing and might be of
some value to his company.

The solution in Asterisk 1.4 is included with Business Edition,
but for the rest of us it's $245 per concurrent channel.  We
don't know yet how well it might work.

/john