[VoIP] DTMF question

[Jayson Smith]

Hi,
This isn't what I want. I think it'd be cool to use actual inband DTMF. Such
that, when I hit a button, the other end of the call can hear the tone for
as long as I keep it held down, and any imperfections, etc. That's what's
inband DTMF is supposed to be, right? Where no digital translation happens,
and the two ends of the call just send DTMF directly to each other?
Thanks.

----- Original Message ----- 
From: "John Novack" <jnovack at stromberg-carlson.org>
To: "Jayson Smith" <ratguy at bellsouth.net>; "Voice Over IP Tandem for Analog
Switches" <voip at ckts.info>
Sent: Tuesday, April 03, 2007 2:25 PM
Subject: Re: [VoIP] DTMF question


> I use:
> dtmfmode=rfc2833
> for my SIP devices, and have no problem
> I do believe that is the suggested mode for use with Asterisk, and may
> solve your DTMF problem
>
> John Novack
>
>
> Jayson Smith wrote:
> > Hi all,
> > Got a puzzling one for you guys. I recently got three Sipura SPA-2000
units,
> > and am using one, and like it. Just for the heck of it, I set
> > dtmfmode=inband for both lines in sip.conf, and have both lines set for
> > inband DTMF in the SPA. Still, calling one line from the other via my
> > Asterisk system, when I hit a touchtone on either phone, the other gets
a
> > tiny blip of the original tone, then, once I let up on the button, a
> > regenerated, fixed-duration touchtone is heard. In other words, as far
as I
> > can tell, inband DTMF isn't really working. My codec choice is Ulaw, so
that
> > shouldn't be a problem. Any thoughts?
> > Thanks.
> >
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> >
>