[Asterisk-video] outgoing video-calls don't works

[barbara_b02 at libero.it]

Hi all!
And thanks for the help!

I have tested with success 3G->SIP videocall, audio e video ok!
I've made the changes Sergio said, and I applied all required patch, but I can't yet make SIP->3G videocall: answering the phone no video and only noise...

*extensions.conf
[sip_out]
exten => _0X.,1,Set(GLOBAL(CELL)=${EXTEN})
exten => _0X.,n,h324m_call(dialcell at sip_to_cell)

[sip_to_cell]
exten => dialcell,1,Dial(mISDN/1/${CELL},40,tTkK)
exten => dialcell,n,Set(CHANNEL(transfercapability)=VIDEO)
exten => dialcell,n,NoOp(transfer=${CHANNEL(transfercapability)})
exten => dialcell,n,Set(CHANNEL(userinformationlayer1)=38)
exten => dialcell,n,NoOp(ul1=${CHANNEL(userinformationlayer1)})
exten => dialcell,n,Hangup()

Could someone of you be so kind to help me one more time?
Thank you very much!
Barbara B.