[Freeswitch-users] DTMF Question/Issue

[Michael Collins]

Generally speaking it is useful to know what the far end is seeing. The
DTMFs may leave your FS box in perfect health but they could be messed with
along the way. Still, you can try setting your DTMF sending to in-band vs.
RFC2833 and see if that helps. If not you'll probably need to talk to your
provider and ask them what they see when the DTMFs pass through their
network.

-MC


On Wed, May 8, 2013 at 5:06 AM, Ira Tessler <ira at connectmevoice.com> wrote:

> I am having customer complaints that when they dial an outside conference
> bridge systems, (e.g. Go To Meeting, etc) or outside IVRs, they are having
> trouble with the remote system recognizing DTMF tones correctly (e.g. when
> entering a PIN for a conference bridge). I put in a way in our system to
> dial an outside number and bypass media for just that call. This seems to
> resolve the issue, but it is annoying for our customers.
>
> My question is how can I troubleshoot this issue? (I have looked at pcap's
> and from what I can see FS is setting the DTMF correctly) What DTMF
> settings in FS should I look at? Here is why I currently am using on my
> external sip profile:
>
> <param name="rfc2833-pt" value="101"/>
> <param name="dtmf-type" value="rfc2833"/>
> <param name="liberal-dtmf" value="true"/>
> <param name="rtp-digit-delay" value="60"/>
> <param name="manual-rtp-bugs" value="IGNORE_DTMF_DURATION"/>
> <param name="rtp-rewrite-timestamps" value="false"/>
>
> Thanks,
>
> Ira Tessler
> Lead Software Engineer
> ConnectMe
> (732) 490-9007 x2
> ira at connectmevoice.com
>
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-- 
Michael S Collins
Twitter: @mercutioviz
http://www.FreeSWITCH.org
http://www.ClueCon.com
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