[Freeswitch-users] How do you determine if DTMFs received are in-band or out-of-band?
Raúl Alexis Betancor Santana
rbetancor at gmail.com
Fri Jul 7 18:57:29 UTC 2017
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'.
2017-07-07 19:42 GMT+01:00 Mark Melling <mark.melling at savageminds.com>:
> 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
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20170707/a91b0c0b/attachment-0001.html>
More information about the FreeSWITCH-users
mailing list