[Freeswitch-users] Problem sending DTMF using an FXS channel

devel at thom.fr.eu.org devel at thom.fr.eu.org
Thu Apr 8 12:55:35 PDT 2010

Log is in http://pastebin.freeswitch.org/12665

Dialplan is following (included in default freeswitch) :


    <extension name="Outgoing FXO Free">

      <condition field="destination_number" expression="^(0[1234589].*)$">

                  <!--<action application="ring_ready"/>-->

          <action application="set" data="effective_caller_id_name=Francois

          <action application="set"

          <action application="set" data="ringback=${hold_music}"/>

          <action application="set" data="transfer_ringback=${hold_music}"/>

          <action application="bridge"




I forgot to mention that I’m using sangoma A400 with HW DTMF detection.




De : freeswitch-users-bounces at lists.freeswitch.org
[mailto:freeswitch-users-bounces at lists.freeswitch.org] De la part de Michael
Envoyé : jeudi 8 avril 2010 19:59
À : freeswitch-users at lists.freeswitch.org
Objet : Re: [Freeswitch-users] Problem sending DTMF using an FXS channel


Pastebin your dialplan config that handles this call as well as a debug
trace from the console.

On Thu, Apr 8, 2010 at 10:03 AM, <devel at thom.fr.eu.org> wrote:



I’m having trouble with calls to remote IVR using DTMF, when the A leg is an
FXS port.


What happens is when the key is pressed on the phone, the DTMF is sent
inband to the callee party as voice, but also detected by freeswitch and so
resent by freeswitch to the callee party. This results in unusability of
called IVR.


Is there any setting that could be used to prevent freeswitch from detecting
DTMF and/or prevent freeswitch from resending the DTMF.





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