[Asterisk-Users] Changing DTMF mode depending on codec chosen

[Andre Normandin]

Hi Rich,

Thanks for writing back to me.  Yep, just like you, I too am looking for a
lower bandwidth codec for my outbound.  And, yes, broadvoice only officially
supports G.711.  That being said, is there even a way to do this scenario in
asterisk?

Thanks,
       - Andre

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com]On Behalf Of Rich
Adamson
Sent: Monday, April 11, 2005 10:59 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Changing DTMF mode depending on codec
chosen


> I'm not quite sure if this can be done, but..
>
> I use BROADVOICE as my outbound primary.  I have both g.729 and ulaw as my
> outbound preference with BROADVOICE. It seems that sometimes broadvoice
> honors my g.729 request, and that is the codec chosen for the outbound
call
> via broadvoice.. Other times, I get ulaw.
>
> The problem is, when I'm using g.729 I get 'inband is not supported on
this
> codec'.. And when I'm using ulaw, rfc2833 doesn't seem to work..
>
> Am I doing something wrong, or is it true that the dtmfmode has to change
> depending on which codec is being used. And, if that is the case, how can
I
> tell asterisk to change the dtmfmode for the call depending on which codec
> is being used for the call?

Unless broadvoice changed something, they only officially support g711
(not g729). So, config your system to only allow ulaw and dtmf=inband
for broadvoice.

The g711 requirement is why I gave up and discontinued their service
since I have limited dsl bandwidth on my end.


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