[Freeswitch-users] Translating DTMF from RFC2833 to INFO

Yehavi Bourvine yehavi.bourvine at gmail.com
Mon Dec 7 22:50:11 PST 2009

Hello all,

  *debug voip rtp session named-event*s shows that it receives and
understands the DTMFs, but it does not send them to the PSTN (sends only
those received via INFO). I haveto find some time and go to the remote site
to update to the latest IOS... I will update after this has been done.

                            Regards, __Yehavi:

 2009/12/6 Anthony Minessale <anthony.minessale at gmail.com>

>  Some more bad news for you, info dtmf spec has expired and has been
> abandoned.  Wait till you see what they did accept instead......
>  On Dec 6, 2009 1:22 PM, "Metik" <freeswitch-users-list at metik.com> wrote:
> Unless the IOS you are running is extremely buggy, "debug voip ccapi"
> commands should not provide you with that detail, what you really want
> to use is "debug voip rtp session named-event".
> Normal SIP-to-PSTN calls should use both a pots and voip dial peer but
> DTMF relay type is determined by the voip dial peer.
> I haven't ran into this issue (i.e. DTMF is ignored when using RFC 2833)
> previously in the wild.  Unlike some other SIP feature servers,  I have
> not had issues (with RFC 2833) between FS and Cisco IOS gateways.
> Although unrelated to FS or any other SIP feature server, I have seen
> some issues when multple dtmf relay types are left enabled on a voip
> dial peer.  Also, there are some (older) IOS versions that have issues
> with DTMF duration which cause digits to be misinterpreted by the
> far-end (PSTN/POTS) but not ignored altogether.
> -metik
> Yehavi Bourvine wrote: > Hello Metik, > > > > 2009/12/6 Metik <
> freeswitch-users-list at metik.com
> > <mailto:freeswitch-users-list at metik.com>>
> > > You previously stated that your Cisco gateway has some "bug" that >
> prevents you from us...
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