[asterisk-users] DTMF digits are coming through twice

[Vik Killa]

After comparing packet captures of good and bad calls. It looks like
the double digit is coming from rfc2833 and dtmf inband.   It looks
like the inband tone is splitting the rfc2833 in two? Is there some
way to resolve this???

On Wed, Oct 10, 2012 at 12:28 PM, Vik Killa <vipkilla at gmail.com> wrote:
> I'm not sure I follow, the packet capture on the asterisk server shows
> double digits being entered. Does that mean it's the source?
>
> On Wed, Oct 10, 2012 at 11:55 AM, SamyGo <govoiper at gmail.com> wrote:
>> Hi,
>>
>> Not exactly a solution, but I'm sure you must've taken pcap traces of a few
>> such sample calls. See in their RTPs that you are receiving repeatedly same
>> RTPs which will tell you that any DTMF packet is coming in twice by the
>> source or not !
>> just one such simple pcap will help you identify at whose end the issue
>> lies. If the source is your vendor sending you RTPs twice for DTMFs then
>> send them the capture and ask them to fix it however they can.
>>
>> BR,
>> Sammy
>>
>> On Wed, Oct 10, 2012 at 8:44 PM, Vik Killa <vipkilla at gmail.com> wrote:
>>>
>>> I've been running an Asterisk server (1.6.2.17.2) for over a year
>>> without any major issues. All of a sudden people are unable to login
>>> to their voicemail because Asterisk is seeing DTMF twice for each
>>> digit the caller pushes. We've noticed the problem only consistently
>>> happens to callers from specific locations. All the locations having
>>> the issue use te same ITSP and internet provider. The ITSP swears it's
>>> not them because they tested outside their phone system, straight from
>>> a d-mark. We've tinkered and played with all options in Asterisk
>>> related to DTMF with no success. Aside from upgrading Asterisk, I'm at
>>> a loss as to how to fix this. This system has worked for over a year
>>> without this issue and all of a sudden it appears. My thought is that
>>> it's the internet provider (Earthlink) but they say it can not
>>> possibly be them. Here is my DTMF settings in sip.conf:
>>> dtmfmode=rfc2833
>>> relaxdtmf=yes
>>>
>>> Any input appreciated! Thanks.
>>>
>>> --
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>>
>>
>> --
>> _____________________________________________________________________
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