[Freeswitch-users] how to Ignore DTMF shorter than Fixed duration ?

[Regis M]

Thanks.
But does FS start replaying it on other leg at the end or while it receive
info.
I had begin to reduce impact by binding digit action, but It seems the
problem is still here.

I know if i need dtmf or not in some calls, so, any other way to ignore ALL
dtmf ? :)
Regards


2012/12/7 Olle E. Johansson <oej at edvina.net>

>
> 6 dec 2012 kl. 22:52 skrev Michael Collins <msc at freeswitch.org>:
>
> Bummer. I'm not aware of any way to ignore those. Anyone else have ideas?
>
>
> The problem with ignoring DTMF in RTP is that it will delay audio, always.
> Let's say you want to delete all DTMF shorter than 1200 ms.
> We receive a DTMF begin packet, then will have to wait to 1220 ms to see
> if the DTMF CONTINUE packets continue or if we actually get a DTMF END
> packet arriving in time. If it does, we'll delete the DTMF - but that
> will produce a gap in the audio we will have to fill. If it is longer than
> 1200 ms we will start playing it out on the other side of the call bridge.
>
> You seriously do not want to delay audio 1200 ms. Not even 100 ms.
>
> There no simple solution to this. We've had issues with GENBAND servers
> and their DSPs that send short DTMF in calls with
> female voices.
>
> In short. When we receive the start of the DTMF we have no idea about the
> duration. We can't make a decision until it's too late to make a
> decision... If you just focus on delaying DTMF, you will start playing DTMF
> on top of audio, cancelling out parts of the conversation.
>
> /O
>
> -MC
>
> On Thu, Dec 6, 2012 at 12:59 AM, Regis M <regis.freeswitch.org at tornad.net>wrote:
>
>> Hi,
>>
>> It's RFC2833 DTMF, not inband.
>>
>> Regards,
>>
>>
>> 2012/12/5 Michael Collins <msc at freeswitch.org>
>>
>>> Are they sending those digits inband or with RFC2833?
>>> -MC
>>>
>>> On Wed, Dec 5, 2012 at 11:28 AM, Regis M <
>>> regis.freeswitch.org at tornad.net> wrote:
>>>
>>>> Hi,
>>>>
>>>> We have a bugged provider that send us throw RTP wrong DTMF during
>>>> call. It seems that wrong DTMF are shorter than 1200ms (about 90%) so I
>>>> want to try to ignore them.
>>>> For the moment, FS catch them and send it back to the bridged side,
>>>> boring user.
>>>>
>>>> switch_rtp.c:3410 RTP RECV DTMF C:552
>>>>
>>>>
>>>>
>>>> Does min-dtmf-duration will make FS ignore them and not RECV them ?
>>>> I saw the DTMF in "normal" RTP packet, but no digit was pressed in user
>>>> side.
>>>>
>>>> It's commented in my FS switch.conf.xml, how can I see the current
>>>> value ?
>>>> <!--<param name="min-dtmf-duration" value="400"/>-->
>>>>
>>>>
>>>> Any other idea ?
>>>>
>>>> thanks
>>>>
>>>> _________________________________________________________________________
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>>>> http://www.freeswitchsolutions.com
>>>>
>>>> 
>>>> 
>>>>
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>>>
>>>
>>> --
>>> Michael S Collins
>>> Twitter: @mercutioviz
>>> http://www.FreeSWITCH.org <http://www.freeswitch.org/>
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>>>
>>>
>>>
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>>>
>>> 
>>> 
>>>
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>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
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>
>
> --
> Michael S Collins
> Twitter: @mercutioviz
> http://www.FreeSWITCH.org <http://www.freeswitch.org/>
> http://www.ClueCon.com <http://www.cluecon.com/>
> http://www.OSTAG.org <http://www.ostag.org/>
>
>
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
> 
> 
>
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>
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>
>
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
> 
> 
>
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