[asterisk-users] DTMF digits are coming through twice

[SamyGo]

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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