[Asterisk-Users] Sipura + Asterisk 1.2 + dtmf

[Asterisk User]

Hi,
I have a problem with Sipura and Asterisk 1.2... everything was working
smoothly with 1.0.9 until I upgraded to 1.2.
The DTMF tones are no longer working, I cannot access Voicemail or send DTMF
digits anywhere.

What changed in version 1.2??

I've read many people with the same issue but with different phones, has
anyone figure out what's wrong??

Oswald