[Freeswitch-users] How do you determine if DTMFs received are in-band or out-of-band?
Mark Melling
mark.melling at savageminds.com
Fri Jul 7 20:18:49 UTC 2017
Just to add to my previous comment - it was because with our previous
set-up where DTMF digits at the end of the dial string were not audible
that I assumed that it must be Freeswitch that was generating a tone for
each received DTMF - may be this assumption is wrong.
On Fri, 7 Jul 2017 at 21:07 Mark Melling <mark.melling at savageminds.com>
wrote:
> > So what your are looking it's to do some kind of callthrought, but
> don't whant the caller to hear the DTMF
>
> This is what I'm trying to achieve. And to be clear the call is initiated
> from an Android phone. The DTMF digits are part of the dial string of the
> form
>
> <phone-number>,<some-digits>#
>
> I'm not disagreeing with your comment that DTMF tones are audible at the
> smartphone end. I may have been approaching this problem in the wrong way,
> but what I do know is that with the previous system - which wasn't using
> Freeswitch, but Twilio we could successfully make calls from an android
> device and the DTMF tones were not audible at the android end.
>
> So what is going on that makes that possible?
>
>
>
> On Fri, 7 Jul 2017 at 20:43 Raúl Alexis Betancor Santana <
> rbetancor at gmail.com> wrote:
>
>> So what your are looking it's to do some kind of callthrought, but don't
>> whant the caller to hear the DTMF ... regardless of if you could, on FS,
>> mute the DTMF or not ... if the caller phone plays them, and most of
>> smartphones DOES, they will be able to hear the tones.
>>
>> 2017-07-07 20:17 GMT+01:00 Mark Melling <mark.melling at savageminds.com>:
>>
>>> Yes, I mean that the caller who is pressing the buttons (although in
>>> this case the button presses are automated as they are included at the end
>>> of the original dial string).
>>>
>>> The reason why I believe this is possible is that in a different set-up,
>>> not using Freeswitch (rather using Twilio) we were successfully able to
>>> transmit DTMFs (as part of dial string) and they were not audible to the
>>> caller.
>>>
>>> I'm just wondering as I type this, if the fact that they were part of
>>> the dial string is significant?
>>>
>>>
>>>
>>> On Fri, 7 Jul 2017 at 20:05 Guillermo Ruiz Camauer <grcamauer at gmail.com>
>>> wrote:
>>>
>>>> Do you mead that the user ON THE OTHER END doesn't hear anything?
>>>> Because I believe most devices will generate their own audible tone on the
>>>> generating end.
>>>>
>>>> On Fri, Jul 7, 2017 at 3:42 PM, Mark Melling <
>>>> mark.melling at savageminds.com> wrote:
>>>>
>>>>> Thanks for that, that is useful info.
>>>>>
>>>>> I posted a separate, but related question that you might have some
>>>>> suggestions about.
>>>>>
>>>>> 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.
>>>>>
>>>>> Thanks
>>>>>
>>>>>
>>>>> On Fri, 7 Jul 2017 at 19:22 Guillermo Ruiz Camauer <
>>>>> grcamauer at gmail.com> wrote:
>>>>>
>>>>>> RFC-2833 sends the DTMF as a special packet within the RTP stream.
>>>>>> SIP-INFO sends it in the SIP dialog.
>>>>>> 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.
>>>>>>
>>>>>> Guillermo
>>>>>>
>>>>>> On Fri, Jul 7, 2017 at 1:14 PM, Mark Melling <
>>>>>> mark.melling at savageminds.com> wrote:
>>>>>>
>>>>>>> Thanks Brian.
>>>>>>>
>>>>>>>
>>>>>>> On Fri, 7 Jul 2017 at 16:51 Brian : <brians at iptel.co> wrote:
>>>>>>>
>>>>>>>> I believe thats 2833
>>>>>>>>
>>>>>>>> From the source:
>>>>>>>>
>>>>>>>> switch(dtmf->source) {
>>>>>>>>
>>>>>>>> case SWITCH_DTMF_INBAND_AUDIO: /* From
>>>>>>>> audio */
>>>>>>>>
>>>>>>>> dtmf_source_str = "INBAND_AUDIO";
>>>>>>>>
>>>>>>>> break;
>>>>>>>>
>>>>>>>> case SWITCH_DTMF_RTP: /*
>>>>>>>> From RTP as a telephone event */
>>>>>>>>
>>>>>>>> dtmf_source_str = "RTP";
>>>>>>>>
>>>>>>>> break;
>>>>>>>>
>>>>>>>> case SWITCH_DTMF_ENDPOINT: /*
>>>>>>>> From endpoint signaling */
>>>>>>>>
>>>>>>>> dtmf_source_str = "ENDPOINT";
>>>>>>>>
>>>>>>>> break;
>>>>>>>>
>>>>>>>> case SWITCH_DTMF_APP: /*
>>>>>>>> Injected by application */
>>>>>>>>
>>>>>>>> dtmf_source_str = "APP";
>>>>>>>>
>>>>>>>> break;
>>>>>>>>
>>>>>>>> case SWITCH_DTMF_UNKNOWN: /*
>>>>>>>> Unknown source */
>>>>>>>>
>>>>>>>> default:
>>>>>>>>
>>>>>>>> dtmf_source_str = "UNKNOWN";
>>>>>>>>
>>>>>>>> break;
>>>>>>>>
>>>>>>>> On Fri, Jul 7, 2017 at 4:28 PM, Mark Melling
>>>>>>>> <mark.melling at savageminds.com> wrote:
>>>>>>>> > Thanks Brian,
>>>>>>>> >
>>>>>>>> > Having done that it says
>>>>>>>> >
>>>>>>>> > DTMF-Source: RTP
>>>>>>>> >
>>>>>>>> > So I assume that means that the DTMF is in-band, is that right?
>>>>>>>> >
>>>>>>>> >
>>>>>>>> >
>>>>>>>> > On Fri, 7 Jul 2017 at 16:19 Brian : <brians at iptel.co> wrote:
>>>>>>>> >>
>>>>>>>> >> Hi Mark
>>>>>>>> >>
>>>>>>>> >> From fs_cli
>>>>>>>> >>
>>>>>>>> >> /event plain dtmf
>>>>>>>> >>
>>>>>>>> >> This will give you console logging of every DTMF event that FS
>>>>>>>> handles
>>>>>>>> >> and I'm pretty sure will give you the DTMF source.
>>>>>>>> >>
>>>>>>>> >>
>>>>>>>> >>
>>>>>>>> >> On Fri, Jul 7, 2017 at 10:44 AM, Mark Melling
>>>>>>>> >> <mark.melling at savageminds.com> wrote:
>>>>>>>> >> > Hi,
>>>>>>>> >> >
>>>>>>>> >> > How can you determine if Freeswitch is receiving DTMFs in-band
>>>>>>>> or
>>>>>>>> >> > out-of-band?
>>>>>>>> >> >
>>>>>>>> >> > I'm not entirely clear on terminology here, but is out-of-band
>>>>>>>> the same
>>>>>>>> >> > as
>>>>>>>> >> > rfc 2833?
>>>>>>>> >> >
>>>>>>>> >> > Thanks
>>>>>>>> >> >
>>>>>>>> >> > Mark
>>>>>>>> >> >
>>>>>>>> >> >
>>>>>>>> >> >
>>>>>>>> >> >
>>>>>>>> _________________________________________________________________________
>>>>>>>> >> > Professional FreeSWITCH Consulting Services:
>>>>>>>> >> > consulting at freeswitch.org
>>>>>>>> >> > http://www.freeswitchsolutions.com
>>>>>>>> >> >
>>>>>>>> >> > Official FreeSWITCH Sites
>>>>>>>> >> > http://www.freeswitch.org
>>>>>>>> >> > http://confluence.freeswitch.org
>>>>>>>> >> > http://www.cluecon.com
>>>>>>>> >> >
>>>>>>>> >> > FreeSWITCH-users mailing list
>>>>>>>> >> > FreeSWITCH-users at lists.freeswitch.org
>>>>>>>> >> > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>>> >> > UNSUBSCRIBE:
>>>>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>>>> >> > http://www.freeswitch.org
>>>>>>>> >>
>>>>>>>> >>
>>>>>>>> _________________________________________________________________________
>>>>>>>> >> Professional FreeSWITCH Consulting Services:
>>>>>>>> >> consulting at freeswitch.org
>>>>>>>> >> http://www.freeswitchsolutions.com
>>>>>>>> >>
>>>>>>>> >> Official FreeSWITCH Sites
>>>>>>>> >> http://www.freeswitch.org
>>>>>>>> >> http://confluence.freeswitch.org
>>>>>>>> >> http://www.cluecon.com
>>>>>>>> >>
>>>>>>>> >> FreeSWITCH-users mailing list
>>>>>>>> >> FreeSWITCH-users at lists.freeswitch.org
>>>>>>>> >> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>>> >> UNSUBSCRIBE:
>>>>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>>>> >> http://www.freeswitch.org
>>>>>>>> >
>>>>>>>> >
>>>>>>>> >
>>>>>>>> _________________________________________________________________________
>>>>>>>> > Professional FreeSWITCH Consulting Services:
>>>>>>>> > consulting at freeswitch.org
>>>>>>>> > http://www.freeswitchsolutions.com
>>>>>>>> >
>>>>>>>> > Official FreeSWITCH Sites
>>>>>>>> > http://www.freeswitch.org
>>>>>>>> > http://confluence.freeswitch.org
>>>>>>>> > http://www.cluecon.com
>>>>>>>> >
>>>>>>>> > FreeSWITCH-users mailing list
>>>>>>>> > FreeSWITCH-users at lists.freeswitch.org
>>>>>>>> > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>>> > UNSUBSCRIBE:
>>>>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>>>> > http://www.freeswitch.org
>>>>>>>>
>>>>>>>>
>>>>>>>> _________________________________________________________________________
>>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>>> consulting at freeswitch.org
>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>
>>>>>>>> Official FreeSWITCH Sites
>>>>>>>> http://www.freeswitch.org
>>>>>>>> http://confluence.freeswitch.org
>>>>>>>> http://www.cluecon.com
>>>>>>>>
>>>>>>>> FreeSWITCH-users mailing list
>>>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>>> UNSUBSCRIBE:
>>>>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>>>> http://www.freeswitch.org
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _________________________________________________________________________
>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>> consulting at freeswitch.org
>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>
>>>>>>> Official FreeSWITCH Sites
>>>>>>> http://www.freeswitch.org
>>>>>>> http://confluence.freeswitch.org
>>>>>>> http://www.cluecon.com
>>>>>>>
>>>>>>> FreeSWITCH-users mailing list
>>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>> UNSUBSCRIBE:
>>>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>>> http://www.freeswitch.org
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Guillermo Ruiz Camauer
>>>>>>
>>>>>> _________________________________________________________________________
>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>> consulting at freeswitch.org
>>>>>> http://www.freeswitchsolutions.com
>>>>>>
>>>>>> Official FreeSWITCH Sites
>>>>>> http://www.freeswitch.org
>>>>>> http://confluence.freeswitch.org
>>>>>> http://www.cluecon.com
>>>>>>
>>>>>> FreeSWITCH-users mailing list
>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>> UNSUBSCRIBE:
>>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>> http://www.freeswitch.org
>>>>>
>>>>>
>>>>>
>>>>> _________________________________________________________________________
>>>>> Professional FreeSWITCH Consulting Services:
>>>>> consulting at freeswitch.org
>>>>> http://www.freeswitchsolutions.com
>>>>>
>>>>> Official FreeSWITCH Sites
>>>>> http://www.freeswitch.org
>>>>> http://confluence.freeswitch.org
>>>>> http://www.cluecon.com
>>>>>
>>>>> FreeSWITCH-users mailing list
>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>> UNSUBSCRIBE:
>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>> http://www.freeswitch.org
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Guillermo Ruiz Camauer
>>>>
>>>> _________________________________________________________________________
>>>> Professional FreeSWITCH Consulting Services:
>>>> consulting at freeswitch.org
>>>> http://www.freeswitchsolutions.com
>>>>
>>>> Official FreeSWITCH Sites
>>>> http://www.freeswitch.org
>>>> http://confluence.freeswitch.org
>>>> http://www.cluecon.com
>>>>
>>>> FreeSWITCH-users mailing list
>>>> FreeSWITCH-users at lists.freeswitch.org
>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>> UNSUBSCRIBE:
>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>> http://www.freeswitch.org
>>>
>>>
>>> _________________________________________________________________________
>>> Professional FreeSWITCH Consulting Services:
>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>>
>>> Official FreeSWITCH Sites
>>> http://www.freeswitch.org
>>> http://confluence.freeswitch.org
>>> http://www.cluecon.com
>>>
>>> FreeSWITCH-users mailing list
>>> FreeSWITCH-users at lists.freeswitch.org
>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>> http://www.freeswitch.org
>>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://confluence.freeswitch.org
>> http://www.cluecon.com
>>
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> http://www.freeswitch.org
>
>
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