<div dir="ltr">I don't know if FS allow you tu 'filter' the DTMFs and don't send them to the B leg ... but it doesn't matter either ... as if the B leg is hearing the DTMF it's because it's forwarded to it and it's the B leg SIP endpoint the responsible of 'let them hear it'.</div><div class="gmail_extra"><br><div class="gmail_quote">2017-07-07 19:42 GMT+01:00 Mark Melling <span dir="ltr"><<a href="mailto:mark.melling@savageminds.com" target="_blank">mark.melling@savageminds.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Thanks for that, that is useful info.<div><br></div><div>I posted a separate, but related question that you might have some suggestions about. </div><div><br></div><div>Namely I'm assuming that for RFC-2833 DTMFs Freeswitch is generating a corresponding tone for the received DTMF (I don't know if this is actually true or not).  If this is the case whether it is possible to disable this tone so that basically a user pressing a key (that generates a DTMF) doesn't hear anything.</div><div><br></div><div>Thanks</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Fri, 7 Jul 2017 at 19:22 Guillermo Ruiz Camauer <<a href="mailto:grcamauer@gmail.com" target="_blank">grcamauer@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">RFC-2833 sends the DTMF as a special packet within the RTP stream.<div>SIP-INFO sends it in the SIP dialog.</div><div>INBAND DTMF come as a series of packets within the RTP stream that must be analyzed to find the frequencies corresponding to the different DTMF.  I believe spandsp takes cares of this.</div><div><br></div><div>Guillermo</div></div><div class="gmail_extra"></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jul 7, 2017 at 1:14 PM, Mark Melling <span dir="ltr"><<a href="mailto:mark.melling@savageminds.com" target="_blank">mark.melling@savageminds.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Thanks Brian.<div><br></div></div><div class="m_9209004266237261790m_271870808530170329HOEnZb"><div class="m_9209004266237261790m_271870808530170329h5"><br><div class="gmail_quote"><div dir="ltr">On Fri, 7 Jul 2017 at 16:51 Brian : <<a href="mailto:brians@iptel.co" target="_blank">brians@iptel.co</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I believe thats 2833<br>
<br>
>From the source:<br>
<br>
switch(dtmf->source) {<br>
<br>
                        case SWITCH_DTMF_INBAND_AUDIO:  /* From audio */<br>
<br>
                                dtmf_source_str = "INBAND_AUDIO";<br>
<br>
                                break;<br>
<br>
                        case SWITCH_DTMF_RTP:                   /*<br>
>From RTP as a telephone event */<br>
<br>
                                dtmf_source_str = "RTP";<br>
<br>
                                break;<br>
<br>
                        case SWITCH_DTMF_ENDPOINT:              /*<br>
>From endpoint signaling */<br>
<br>
                                dtmf_source_str = "ENDPOINT";<br>
<br>
                                break;<br>
<br>
                        case SWITCH_DTMF_APP:                   /*<br>
Injected by application */<br>
<br>
                                dtmf_source_str = "APP";<br>
<br>
                                break;<br>
<br>
                        case SWITCH_DTMF_UNKNOWN:               /*<br>
Unknown source */<br>
<br>
                        default:<br>
<br>
                                dtmf_source_str = "UNKNOWN";<br>
<br>
                                break;<br>
<br>
On Fri, Jul 7, 2017 at 4:28 PM, Mark Melling<br>
<<a href="mailto:mark.melling@savageminds.com" target="_blank">mark.melling@savageminds.com</a>> wrote:<br>
> Thanks Brian,<br>
><br>
> Having done that it says<br>
><br>
> DTMF-Source: RTP<br>
><br>
> So I assume that means that the DTMF is in-band, is that right?<br>
><br>
><br>
><br>
> On Fri, 7 Jul 2017 at 16:19 Brian : <<a href="mailto:brians@iptel.co" target="_blank">brians@iptel.co</a>> wrote:<br>
>><br>
>> Hi Mark<br>
>><br>
>> From fs_cli<br>
>><br>
>> /event plain dtmf<br>
>><br>
>> This will give you console logging of every DTMF event that FS handles<br>
>> and I'm pretty sure will give you the DTMF source.<br>
>><br>
>><br>
>><br>
>> On Fri, Jul 7, 2017 at 10:44 AM, Mark Melling<br>
>> <<a href="mailto:mark.melling@savageminds.com" target="_blank">mark.melling@savageminds.com</a>> wrote:<br>
>> > Hi,<br>
>> ><br>
>> > How can you determine if Freeswitch is receiving DTMFs in-band or<br>
>> > out-of-band?<br>
>> ><br>
>> > I'm not entirely clear on terminology here, but is out-of-band the same<br>
>> > as<br>
>> > rfc 2833?<br>
>> ><br>
>> > Thanks<br>
>> ><br>
>> > Mark<br>
>> ><br>
>> ><br>
>> ><br>
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<a href="http://www.freeswitch.org" rel="noreferrer" target="_blank">http://www.freeswitch.org</a></blockquote></div>
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<a href="http://www.freeswitch.org" rel="noreferrer" target="_blank">http://www.freeswitch.org</a><br></blockquote></div><br><br clear="all"><div><br></div></div><div class="gmail_extra">-- <br><div class="m_9209004266237261790m_271870808530170329gmail_signature" data-smartmail="gmail_signature">Guillermo Ruiz Camauer<br></div>
</div>
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