[cisco-voip] Sip trunk problem

[Mirko Maffioli]

I've two trunk sip on my  voice gateway (2801): one directed to my callmanager 4.2 (very old version) and one directed to my carrier voip.
 
When i made an outbound call everything works (with codec g711, i don't know why since in the dial-peer i wrote a voice class with g729 with high priority).
When i try an inbound call my phone ring but audio doesn't works.
 
I think that the problem is in the callmanager - voicegateway trunk since if i connect a phone directly to the 2801 (with the cme configuration) everythings works fine.
 
Do you have some ideas?
 
Bye
Mirko