[Freeswitch-users] Hint for DTMF handling in sofia.c

Michael Jerris mike at jerris.com
Fri Jan 9 09:12:58 PST 2009

Update on this... the latest of anything to speak of in the standards  
process is that they are killing dtmf-relay.  The last draft on it was:


Which says snom is sending it right.  We will continue to accept both  
ways but need to think a bit about how we send.  Should we match the  
draft or the cisco way (cisco by the way was on record saying that  
info dtmf-relay should die in favor of new specs such as kpml).

If anyone wants a good read of what the ietf has standardized in place  
of info based dtmf, see http://tools.ietf.org/html/rfc4730


On Jan 8, 2009, at 6:38 PM, Brian West wrote:

> Snom has already responded to my issue and are going to be providing
> me a firmware for testing this tomorrow.. its still going to default
> to the WRONG way.. but has a toggle to turn it to the right way.
> /b
> On Jan 8, 2009, at 3:23 PM, Kristian Kielhofner wrote:
>> Yes, it should use the decimal encoding from the table you mentioned.
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