[Asterisk-biz] re: US toll-free DID with good DTMF needed

[alex at pilosoft.com]

On Wed, 20 Jul 2005, Yair Hakak wrote:

> hello all,
>  i need a US toll free DID with good DTMF...my testing has so far been
> disappointing, most of my DTMF is getting mangled, which makes the
> toll-free pretty useless to allow remote calling via a central server.
> 
> So, anyone have US toll-free DID to offer with good DTMF? looking for a
> target rate of 2 cents per minute incoming and a reasonable per-month
> fee (obviously no per month fee is the best).
We can do that, 5$/month and 2.1c/minute.

If you are getting mangled DTMF, you probably are trying to use compressed
codecs and in-band DTMF. It should work, but it just might not. 

Use either out-of-band DTMF or use g.711.

-alex