[Freeswitch-users] lua IVR interactivity problem

[Stanislav Sinyagin]

it's much easier to implement the IVR logic via an ESL connection.
Then you can script it in your preferred programming language and
perform all necessary database lookups or whatever your application
requires.

But in both cases (Lua or mod_perl or mod_python or an ESL
application), you would need to execute playAndGetDigits in order to
let the user enter DTMF during the playback of the prompt. If you have
multiple audio files to play back, you just execute playAndGetDigits
with every audio file in the sequence until the DTMF input is
detected. You can also build a phrase macro and use it instead.

In case of ESL, you can also subscribe to DTMF events and play audio
files asynchronously if playAndGetDigits is not sufficient for your
needs.

Here is a short example in Golang, probably you'll find it useful:
https://github.com/xlab1/go-fs-secretary-prototype/blob/master/golang/secretary_server.go




On Mon, Dec 28, 2015 at 6:46 PM, Peter Hartmann
<peter at hartmanncomputer.com> wrote:
> I'm trying to port an IVR to lua. I'm new to lua by the way.  The big
> picture: the goal is that the IVR should change based on the output of
> a shell script.
>
> I've followed the basic example over here, substituting my several wav files
> for the TTS prompts.
>
> https://freeswitch.org/confluence/display/FREESWITCH/Lua+Welcome+IVR+example
>
> But I've noticed a huge difference between this and the core IVR
> functionality.  DTMF will not interrupt the prompts, it will only be
> accepted when the script reaches the session:getDigits line.   It
> seems like session:playAndGetDigits could be interactive, but it only
> accepts one wav.  Is there a way for either playAndGetDigits to accept
> multiple wav files (without concatinating)?  Or otherwise is there a
> way for a scripted IVR to have this interactive functionality?   Seems
> like I need to fork the getDigits first and then play the wavs, right?
>
> I realize I could probably do the logic in the dialplan and then send
> the caller to different IVRs, but I'd rather not maintain 2 mostly
> similar IVRs.
>
> Does anyone use a scripting language based IVR and have this solved?
> Or otherwise have a solution that doesn't involve maintaining 2
> distinct IVRs?
>
> Thanks much
>
>
>
>
>
> Peter Hartmann
> Hartmann Computer Consulting
> http://blog.hartmanncomputer.com
> (212)203-8870
>
> If I can't explain it to you in plain language, that means I don't
> understand it.
>
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