[asterisk-users] Verification number / code

[Thomas Perron]

that is a bit heavy for me.  how about some simple way to announce a random
number.  using RAND. and saydigit

exten => s,1,Set(junky=${RAND(1,8)})



On Sat, Nov 21, 2009 at 7:20 PM, Steve Edwards <asterisk.org at sedwards.com>wrote:

> On Sat, 21 Nov 2009, Thomas Perron wrote:
>
> > I want to distribute a random number to each of the first 100 callers to
> > my IVR. This random number will be matched to their telephone number.
> > Where in Asterisk can I do this?  And, how?
> >
> > Logic.
> >
> > Call arrives.
> > Context for announcement begins.
> > You will receive a authentication code at the end of the message.
> > Then, if they press a certain digit to confirm then I simply pass a code
> to
> > them.
> > These codes are distributed to the first 100.
> > The 101st call does not get a code.
>
> I'm guessing you really don't want a random number since a random number
> generator can generate duplicates.
>
> "Matching" the number to their ANI also has issues. What if my ANI is
> blocked? What if I spoof my ANI? What if I call from a SIP phone?
>
> I would "pre-compute" the random numbers and store them in a database.
>
> When a call arrives, I would invoke an AGI that would lock the table, read
> the first value with a null ANI, update the row with the caller's ANI, and
> unlock the table.
>
> You could do it in dialplan, but I find database access in dialplan ugly.
>
> Alternatively, you could mung UNIQUEID (<number of seconds since
> Epoch>.<number of channels created by this instance of Asterisk>) to
> appear to the caller as random and then store that and their ANI in a
> database.
>
> What happens if Asterisk is restarted in the middle of your campaign?
>
> --
> Thanks in advance,
> -------------------------------------------------------------------------
> Steve Edwards       sedwards at sedwards.com      Voice: +1-760-468-3867 PST
> Newline                                              Fax: +1-760-731-3000
>
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