[Freeswitch-users] Is RFC 4733 supported ?

Michael Jerris mike at jerris.com
Thu Apr 23 08:48:39 PDT 2009

I should clarify that we support the dtmf tones plus flash but no  
other tones at this time.


On Apr 23, 2009, at 11:17 AM, Steve Underwood wrote:

> Michael Jerris wrote:
>> rfc 4733 attempts (and fails miserably) to clarify rfc2833.  It
>> doesn't "really" change anything of any real substnace.  Our handling
>> of these packets tries very hard to be strict in what we send and
>> loose in what we accept and we tend to interoperate pretty well with
>> most endpoints.  That being said, there are some very broken  
>> endpoints
>> out there (such as sonus) that require special hacks, some are
>> automatic, some require settings.  All that being said, we should be
>> very compliant with both 2833 and 4733, although you will generally
>> see references in settings refer to 2833.
> RFC4733 largely tries to clarify RFC2833 for the DTMF features.  
> However,
> for most other signal it is very incompatible with RFC2833.

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