[Freeswitch-users] Unreliable DTMF

[Michael Jerris]

Depends on the carrier, FreeSWITCH itself has no issues with it.. some/many carriers block it to avoid people running ivrs before answer to avoid toll charges.


On Sep 12, 2013, at 1:04 PM, Avi Marcus <avi at avimarcus.net> wrote:

> Oh. I think it's written somewhere on the wiki that DTMF during pre_answer is unpredictable, it sometimes works and sometimes doesn't...
> -Avi