[Freeswitch-users] inband DTMF bleeding through

[Richard Zheng]

Any resolution on this one?  I have the same issue.  DTMF coming from a
cell phone, say 123, is sometimes repeated, e.g. 11233 when forwarded to an
outbound call.  It is not consistent though.


On Fri, Mar 22, 2013 at 7:16 AM, Matt Broad <matt at inveroak.com> wrote:

> Hi Trever,
>
> I don't think so, it seems that that jira is for a non-SIP based setup.
>
> My "issue" is that when calling a PSTN number from a mobile/landline
> phone, which gets delivered by SIP to my FreeSwitch server and then routed
> out to another PSTN number (via the same provider). When either party
> presses a digit, the other end hears the tone. The tone is not the whole
> tone just a fraction of it, maybe half a second, but enough to tell the
> difference when different keys are pressed.  The key can be held for a long
> period, say 3 seconds, but you will only hear the "bleeding".
>
> I have drop_dtmf set to true on both channels (set and export), but I'm
> not sure if this would make any difference anyway as the tone is being sent
> out-of-band.
>
> It might also be worth noting that I don't get any duplication of tones.
> Pressing 123 will always receive 123 and not 112233.
>
> thanks
> Matt
>
>
> On 22 March 2013 16:54, Trever L. Adams <trever.adams at gmail.com> wrote:
>
>> On 03/12/2013 01:45 PM, Matt Broad wrote:
>> > Ok, so the fact that a tone can be heard, although only partially,
>> > would suggest inband digits are being sent too.  I'll speak to my
>> > carrier and see if it is something they can supress their end.
>> > Thanks for the help and the tips on debugging :)
>> >
>> > Thanks
>> > Matt
>> Matt, by chance is this what you are describing:
>>
>> http://jira.freeswitch.org/browse/FS-4904
>>
>> Trever
>>
>>
>
>
> --
> Thanks
> Matt
>
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