[asterisk-users] Re: codecs/voicemail/DTMF

[Martin Joseph]

On 2006-09-20 23:57:09 -0700, Martin Joseph <ast at stillnewt.org> said:

> On 2006-09-20 10:23:01 -0700, "Mr. Jones" <worldsense at gmail.com> said:
> 
>> Hi Eric,
>> 
>> I'm confused on where I would put this?
>> 
>> I'm also confused on how this would help with external calls (which we
>> want to be g729) vs internal calls to voicemail (which appear to need
>> to be g711)?
> 
> No, calls to voicemail do not need to be ulaw. You can definitely call 
> voicemail via G729 and use rfc2833 for DTMF.  It works depending on 
> your equipment.
> 
> You are calling using G729 and trying to pass your tones inband, which 
> is impossible due to lack of bandwidth.
> 
> I think using DTMF=rfc2833 instead of auto is your best bet.

Sorry I think that's dtmfmode=rfc2833