You have to use outofband dtmf with rfc standard.

You might be using inband dtmf which will not work sip based voip phone as
dtmf is send as a rtp stream with payload type 101.

- Ashok


On 10/4/07, Michael R. Hines <[EMAIL PROTECTED]> wrote:
>
> Hello,
>
> linphone is an awesome program. (Thanks guys) I use it quite frequently
> with
> viatalk's SIP service. I am having a small problem with the ability to use
> DTMF:
>
> An example sequence of events:
>
> 1. I make a phone call (for example a guided 800-number)
> 2. I get a sequence of menu options from the callee
> 3. I choose one of the options, by clicking the number with my mouse
> 4. The DTMF signal is *not received* by the callee
> 5. I *do* however hear the DTMF tone in my speakers/headset
>
> I've tried this on both 64-bit *and* 32-bit binaries on
> a stock fedora 64-bit linux system.
>
> I'd be happy to provide logs.
>
> Does anyone know why the DTMF is not being recognized on the other side?
>
> Thanks!
>
> --
> /*
> Michael R. Hines
> http://hinespot.net
> Live long and prosper...
> */
>
>
> _______________________________________________
> Linphone-users mailing list
> [email protected]
> http://lists.nongnu.org/mailman/listinfo/linphone-users
>
>
>
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