[Freeswitch-users] Hot to determine DTMF negotiation outcome

[Guillermo Ruiz Camauer]

Thank you for your input.  I was wondering if there is any way to not allow the call to be established if a compatible DTMF exchange method cannot be negotiated.

Guillermo

Sent from my iPhone

> On 18/12/2014, at 19:16, Bote Man <bote_radio at botecomm.com> wrote:
> 
> I believe this is negotiated when the call is set up and is out of your control once it is completed.
>  
> Check in the XML file that handles these calls under conf/sip_profiles/ to see if the following flag is set:
>  
>     <!-- Don't be picky about negotiated DTMF just always offer 2833 and accept both 2833 and INFO -->
>     <!--<param name="liberal-dtmf" value="true"/>-->
>  
> I don't know what the default value is, but if you uncomment that line it should accept the method negotiated with the far end.
>  
> Hope this helps.
>  
>  
> John Boteler
> Bote Communications
> Fort Lauderdale, FL
>  
>  
>  
> From: Guillermo Ruiz Camauer
> Sent: Thursday, 18 December, 2014 16:43
> Subject: [Freeswitch-users] Hot to determine DTMF negotiation outcome
>  
> How can I determine if a call has successfully negotiated a DTMF transfort mechanism?  Case in point:  if I dial out from FS, when the call is established, I want to know if DTMF can be successfully interchanged between the dialed party and FS.  My FS is setup for RCF-2833, but sometimes I get:
>  
> 2014-12-18 16:59:10.309023 [WARNING] sofia.c:8604 IGNORE INFO DTMF(5) (This channel was not configured to use INFO DTMF!)
>  
> which to me means that the other party is sending DTMF using SIP INFO.  
>  
> If I only offer RFC-2833 and the other party does not support this, how can I find out about it?
>  
> Thanks,
>  
> --
> Guillermo Ruiz Camauer
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