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

[Helmut Kuper]

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Hi Brian,

sorry, got lost  ...  It's a bug in Snom and AVM's phones?

Maybe we misunderstood. RFC 2833 emtioned in chapter 3.10 following DTMF
Events:

3.10 DTMF Events

   Table 1 summarizes the DTMF-related named events within the
   telephone-event payload format.

                     Event  encoding (decimal)
                     _________________________
                     0--9                0--9
                     *                     10
                     #                     11
                     A--D              12--15
                     Flash                 16

                     Table 1: DTMF named events

Most phones in germany are able to send * and # DTMF events and
Phone-applications like voiceboxes or IVRs need those Events.

Therefor I don't think it's a bug in Snom or AVM ...

But maybe you mean Snom and AVM should send "Signal=10" instead of
"Signal=*" ?

Unfortunately I can't find an rfc which describes DTMF over INFO
messages to find out what the right way is.

regards
helmut

Am 08.01.2009 16:43, schrieb Brian West:
> I just opened a bug with Snom on this one.. it should NEVER send a * or
> # in the signal line.  But we do work around this but its wrong.
> 


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