I have my N900 connecting fine to my Asterisk server. I can call my voicemail, but the dial pad of the N900 does not generate digits which Asterisk can recognize. Wireshark shows RTP messages with the correct digits, but Asterisk voicemail is acting as if they're not recognized.

I guess the good news is that usable RTP DTMF packets are reaching Asterisk, so I guess I can build my own copy and debug and code up something to fix the issue. But what a pain, all this was working fine on the n810, what changed on the n900?