[Asterisk-Users] DTMF problems with International Calls

[Mohit Muthanna]

Folks,

I've setup an IVR system that's been running fine (in production) for
the last 6 months. It's primarily been used for North American calls.
The problem I'm having is that for international calls, DTMF does not
work. The tones just don't get detected. I tried a number of different
codecs and options, but to no avail. I'm using IAX through my
provider.

The numbers that are known not to work are: 

+48605xxxxxx
+61405xxxxxx (OTOH, +61299xxxxxx works fine)
+48508xxxxxx

I've confirmed that the +61405xxxxxx number is a GSM cell phone in
Australia (does not work), and the +61299xxxxxx is a landline (works
fine).

So... has anybody seen these issues before? If so, are they any workarounds?

Thanks,
Mohit.

-- 
Mohit Muthanna [mohit (at) muthanna (uhuh) com]
"There are 10 types of people. Those who understand binary, and those
who don't."