[Asterisk-Users] SIP and DTMF

[Dan Fernandez]

What is OOB DTMF?

I am using GSM with Xlite and dtmfmode =rfc2833. The Authenticate app
recongnizes the digits I enter but with VoiceMail it only takes the first
one or two digits of a 4 digits extesion (voicemail box).

I have the same problem if I use g711. From my experience then is not a
problem of the codec being used but it has something to do with the
voicemail app.

Any suggestion?


----- Original Message -----
From: "Eric Wieling" <eric at fnords.org>
To: <asterisk-users at lists.digium.com>
Sent: Friday, May 23, 2003 4:07 PM
Subject: Re: [Asterisk-Users] SIP and DTMF


> Inband DTMF only really works when using G711 (ulaw or alaw).  If you
> are not using G711, you'll have to use OOB DTMF to get it to work.
>
> --Eric
>
> On Fri, 2003-05-23 at 13:12, Avery, Brian wrote:
> > Hello,
> >
> > I am fairly new to asterisk. I am currently using asterisk as a
> > more convenient sip side voicemail system.
> >
> > My problem:
> > I have cisco 7960 phones whose out of band dtmf tones
> > are recognized properly(when dtmfmode=rfc2833) by asterisk but whose
> > in-band dtmf tones are recognised poorly(when dtmfmode=inband) . For
> > example 7999 comes out as 799999, 4242 comes out as 442422 ... etc
> >
> > I also have a cisco 2600 acting as a router/bridge
> > between a Nortel Option 11C pbx and the voip/sip side.  It can only send
> > in-band dtmf as far as I can tell (probably because that is how the
> > Nortel is forwarding it.
> >
> > I found the dtmfmode switch to make EITHER one work.  Is there a
> > method so that asterisk can deal with both in band and out of band dtmf
> > tones at the same time?  is there a reason that it would ever need to
> > ignore the out of band ones?
> >
> >
> > thanks,
> > Brian Avery
> >
> >
> > _______________________________________________
> > Asterisk-Users mailing list
> > Asterisk-Users at lists.digium.com
> > http://lists.digium.com/mailman/listinfo/asterisk-users
> --
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