[Freeswitch-users] Hint for DTMF handling in sofia.c
helmut.kuper at ewetel.de
Thu Jan 8 08:24:57 PST 2009
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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
3.10 DTMF Events
Table 1 summarizes the DTMF-related named events within the
telephone-event payload format.
Event encoding (decimal)
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
Unfortunately I can't find an rfc which describes DTMF over INFO
messages to find out what the right way is.
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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