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

[Klaus Darilion]

1. establish an outgoing call
2. > show channels
3. analyze the channels in detail:
show channel Local/.....
show channel misdn/.....

and compare the Audioformat (alaw, ulaw). As the digital call is 
tunneled as voice frame asterisk may do transcoding which destroys the 
digital H.223 stream.

A workaround would be to change in h324m_call (in app_h324m.c) the 
format AST_FORMAT_ALAW|AST_FORMAT_ULAW  to either, ALAW or ULAW. This 
worked for me.

regards
klaus

barbara_b02 at libero.it wrote:
> 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.
> 
> 
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