Re: [Linphone-users] DTMF on linux 64-bit system

[Michael R. Hines]

How do I check for that? Here's my settings:

1. firewall off (I'm not behind NAT)
2. *not checked*: "use SIP INFO message instead of RTP rfc2883 for DTMF"
3. all sound devices working properly
4. I'm using SIP through an sip-proxy (asterick-based)
5. My audio codecs in this order: PCMU, PCMA, GSM, speex

I'm not familiar with the specific SIP details, but I would
be more than happy to provide more information to solve this problem.

Thank you very much for your assistance,

- Michael Hines


Ashok Hirpara wrote:
> 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* <address@hidden
> <mailto:address@hidden>> 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 <http://hinespot.net>
>     Live long and prosper...
>     */
> 
>

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