[Asterisk-Users] Problem with DTFM and complex international setup

Mohit Muthanna
Fri, 01 Jul 2005 14:24:00 -0000

Try compiling Asterisk with RELAX_DTMF (See Makefile).

Mohit.

On 7/1/05, Rob Scott <Rob_Scott@epam.com> wrote:
> We have some guys working in the US who can't always dial back to our
> company in Europe easily (lots of clients require authorization to make
> international calls), so I set up the following:
>
>    - ipkall.com number links to a FWD number
>    - office Asterisk box registers with FWD
>
> Then I programmed Asterisk to accept office extension number using DTFM
> tones.
> This works OK.
>
> Then I programmed Asterisk so that it is possible, using a PIN code, to
> dial out from Asterisk onto the local PSTN.
>
> This also works occasionally.
> Looking at the message from the Asterisk box it is clear that sometimes
> numbers are missed or repeated in the dial string. This I suspect is
> because Asterisk is listening to the DTMF tones but the signal is
> dropped; sometimes the drop means that a whole digit is dropped and
> sometimes is means that a digit is repeated.
>
> Does anyone know how I can fix this to make it more reliable
> (out-of-band DTMF?) or a better way to achieve a reliable setup?
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--
Mohit Muthanna [mohit (at) muthanna (uhuh) com]
"There are 10 types of people. Those who understand binary, and those
who don't."