[asterisk-users] duration of rfc2833 generated dtmf

Brent Davidson brent at texascountrytitle.com
Mon Apr 13 16:44:19 CDT 2009

John covici wrote:
> Hi.  I have a SIP provider which wants RFC2833 for the dtmfmode,
> however I would like to increase the duration of the tone, its pretty
> short and some IVR's are unhappy or don't detect it.  I did poke
> around, but it looks like when RFC2833 is used, it actually generates
> rtp packets of some sort, so I have no idea how to increase that
> duration.
> Any assistance would be appreciated.

If your provider insists on rfc2833, then their servers will be 
responsible for setting the tone duration sent to PSTN lines.

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