[Freeswitch-users] DTMF not working in my installation

Sandro Bordacchini sandro.bordacchini at nems.it
Wed May 29 09:08:37 UTC 2019

 Hi Euan.
I think you should probably check how your softphone sends DTMF (usually
could be in-band, rfc2833 or SIP Info, and you have set FS to work with
rfc2833 dtmf).
Setting liberal-dtmf parameter could be of some help sometimes

Hope it helps.

Il giorno lun 27 mag 2019 alle ore 16:47 Euan Millar <
euan at ensemblepourladifference.org> ha scritto:

> Hello again, kind Freeswitch group.
> I am using ESL to control my calls entirely from a Node application.  I am
> using the 'modesl <https://github.com/englercj/node-esl>' package to
> create an ESL connection and listen to the FS events
> <https://freeswitch.org/confluence/display/FREESWITCH/Event+List> and
> then answer a call if the number matches a dialplan I want to control using
> the mod_command "uuid_answer."
> I have gotten as far as attempting to recognise DTMF events, but I am
> getting no DTMF events through.
> So, I tested my Freeswitch installation using the IVR demo, and it looks
> like DTMF is not being received by Freeswitch at all.
> I monitored fs_cli and I can see that the demo is just waiting for digits,
> even though I can hear them being pressed in my softphone.
> Is there any particular modules that I need to ensure are installed, or
> configuration I need to make in order to enable DTMF?
> In a previous email to this list, I saw a message advising to set the
> following in sofia.conf.
> <param name="dtmf-type" value="rfc2833"/>
> I can see that the property is loaded inside sip_profiles > internal.xml
> But changing this has had no effect.  I still do not get any DTMF events
> being recognised in fs_cli
> Many thanks for any help or advice you can provide.
> Kind regards,
> Euan
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