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Re: [Linphone-developers] Trouble with RFC 2833 / 4733


From: Dominic
Subject: Re: [Linphone-developers] Trouble with RFC 2833 / 4733
Date: Wed, 09 May 2018 18:05:56 -0000
User-agent: Mailpile

Hi Russel,

Thanks for all the help. I have opened the following issue on
github:
https://github.com/BelledonneCommunications/linphone-android/issues/262

I also ran a test with only speex 16k enabled, and you are right,
DTMF worked correctly. So, the issue seems to be when a 16k codec
is enabled, but an 8k codec is negotiated.


On Wed, 9 May 2018 08:53:29 -0400 Russell Treleaven
<address@hidden> wrote:
> HI Dominic,
> 
> I would say this is a bug with Linphone.
> Suggest you post a bug at github.
> 
> I suspect if speex or opus was negotiated that dtmf would work.
> Is that something you can confirm?
> 
> BTW I am not affiliated with Linphone.
> 
> 
> 
> On Tue, May 8, 2018 at 8:21 PM, Dominic <address@hidden>
> wrote:
> 
> > Hi Russel,
> >
> > I've been there myself, no worries.
> >
> > I just did another test call with speex 8k enabled (and 16k
> > disabled) and as expected DTMF worked perfectly. Actually,
> > looking back at the logs, it looks like speex 8k was enabled in
> > the successful call I posted (a=rtpmap:96 speex/8000). The only
> > difference between the one that worked and the one that didn't
> > was speex 16k was enabled in the one that didn't work.
> >
> > Let me know if I can provide any other info.
> >
> >
> > On Fri, 4 May 2018 14:54:56 -0400 Russell Treleaven
> > <address@hidden> wrote:
> > > Hi,
> > >
> > > I looked at my response from last night and I can't even tell you what I
> > > meant to say :).
> > >
> > > Yeah looks to me like like linphone doesn't like dtmf with an iana number
> > > of 98.
> > > The extremely typical case is 101.
> > > can you disable speex 16k but leave speex 8k and see if anything changes?
> > >
> > > Hope I make more sense today.
> >
> > --
> > Thank you,
> > Dominic
> >
> > _______________________________________________
> > Linphone-developers mailing list
> > address@hidden
> > https://lists.nongnu.org/mailman/listinfo/linphone-developers
> >
> >
> 
>

-- 
Thank you,
Dominic

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