I had this featured requested of me a few months ago. 

Bind_meta_app does work, but requires two tones, the “*” plus an additional digit.  I needed to perform a task on the “*”.  I re-wrote the bind_meta_app handler so that if you attached a instruction to what would be “**” hitting a single “*” would active it.  Kind of a hack, but if no one comes up with a more elegant way, I could provide a .patch file that did the necessary changes.

I’d love an all-LUA method, or something that could use an existing InputCallback routine, but this worked for my immediate need.

-pete

From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Nik Middleton
Sent: Monday, December 07, 2009 4:32 PM
To: freeswitch-users@lists.freeswitch.org
Subject: Re: [Freeswitch-users] Trapping dtmf on bridged call

Yes I did, is it possible mod_vmd is interering?  It’s stopped before I call the start_dtmf function

session:setHangupHook("myHangupHook", "blah")

session:setInputCallback("onInput");

session:execute("vmd","start");

if (session:ready() == false) then

            freeswitch.consoleLog("info", " : Call Failed!!!\n");

end

session:answer();

---

From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Anthony Minessale
Sent: 07 December 2009 23:21
To: freeswitch-users@lists.freeswitch.org
Subject: Re: [Freeswitch-users] Trapping dtmf on bridged call

did you set the inputcallback too?

On Mon, Dec 7, 2009 at 4:59 PM, Nik Middleton <nik.middleton@noblesolutions.co.uk> wrote:

Can this be done in an lua script?

Regards,

---

From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Michael Collins
Sent: 07 December 2009 22:18

To: freeswitch-users@lists.freeswitch.org
Subject: Re: [Freeswitch-users] Trapping dtmf on bridged call

On Mon, Dec 7, 2009 at 2:02 PM, Nik Middleton <nik.middleton@noblesolutions.co.uk> wrote:

Hi

Is it possible to trap on DTMF on a bridged call within an LUA script?  I’ve tried setting the gateway to use inband, but no joy.  It looks like I could use start_dtmf, but I can’t see how to launch this within LUA

Perhaps you could use bind-meta-app to bind a key combo like *1 to whatever you want to have happen. Check it out:
http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_bind_meta_app

The Local_Extension in the default.xml dialplan file has a few examples of using this tool.
-MC

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Anthony Minessale II

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