[Asterisk-Dev] DTMF and Broadvoice

[Greg Hill]

On Mon, 9 Aug 2004, James Jones wrote:

> need to make that dtmfmode=inband is in both the [general] and the
> [broadvoice]

 From my experimentation, it seems that the setting in [broadvoice] was
used for an outbound call and the setting in [general] is used with
inbound calls.

It seems that Asterisk assumes you want to use rfc2833 on inbound calls
unless you tell it otherwise. I didn't do any extra research to find out
whether then incoming SIP connection from Broadvoice indicates that DTMF
will be inband and Asterisk ignores this hint, or whether Asterisk is
failing to use the setting in [broadvoice] for incoming as well as
outgoing calls.

In any case, if all your SIP inbound stuff works fine with inband DTMF (or
if BV is all the inbound SIP you get) then you'll get along fine setting
it inband in the general section.

Greg


> -----Original Message-----
> From: asterisk-dev-admin at lists.digium.com
> [mailto:asterisk-dev-admin at lists.digium.com]On Behalf Of Jeremy Hall
> Sent: Monday, August 09, 2004 3:31 PM
> To: asterisk-dev at lists.digium.com
> Subject: RE: [Asterisk-Dev] DTMF and Broadvoice
>
>
> Andrew Kohlsmith <> scribbled on Monday, August 09, 2004 1:07 PM:
>
> > On Monday 09 August 2004 14:50, Jeremy Hall wrote:
> >> Christopher Jacob <> scribbled on Monday, August 09, 2004 12:41 PM:
> >>> I have found threads here and there talking about this, but has
> >>> anyone figured out how to get DTMF in asterisk when using broadvoice
> >>> as an inbound provider?
> >>
> >> Set dtmf=inband in your sip.conf and it will work fine.
> >
> > So broadvoice only allows ULAW codecs on inbound connections?  'cos
> > DTMF sure as hell won't work if you're using any kind of voice
> > compression codec.
>
> Broadvoice supports only ULAW with inband DTMF period, inbound or
> outbound.  I'd prefer they supported out of band DTMF and iLIBC, or even
> GSM, but they said they are trying to mimmic a pots line as closely as
> possible.
>
> Jeremy
>
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