[Asterisk-video] How to know if video call is comming?

[Borja SIXTO]

Hi Zelalem,

If you are using SIP Video calls use :

exten => vxml,n,NoOp(${CHANNEL(videonativeformat)})

This return the Video Codec used for the call.

Regards,


Borja


Zelalem Sintayehu a écrit :
> Thank you Borja for your prompt response. But I think I have still 
> some questions. I am using Asterisk 1.4.21 version. So, what is the 
> patch (where can I get it) for this particular version. BTW, I am also 
> using the app_mp4 application. The other thing, does the CHANNEL 
> function (that you mentioned) tell me if the call if video or audio? I 
> mean I was expecting a return value that I can use for the GOTOIF 
> function in extensions.conf file to go to a particular place if the 
> call is video or audio. Please elaborate on this. Particularly, I 
> don't understand the Traces from PRI section. I don't use ISDN at the 
> moment.
>
> Thank you.
>
> - Zelalem S.
>
>
> > Date: Wed, 13 May 2009 12:10:38 +0200
> > From: borja.sixto at i6net.com
> > To: asterisk-video at lists.digium.com
> > Subject: Re: [Asterisk-video] How to if video call is comming?
> >
> > Hi Zelalem,
> >
> > Yes that is possible.
> > You have a signaling information in the SETUP packet (in case of ISDN,
> > you have a similar data in SS7) :
> >
> > Traces from PRI :
> > < Bearer Capability (len= 5) [ Ext: 1 Q.931 Std: 0 Info transfer
> > capability: Unrestricted digital information (8)
> > < Ext: 1 Trans mode/rate: 64kbps,
> > circuit-mode (16)
> > < User information layer 1: H.223/H.245
> > Multimedia (38)
> >
> > You will probably need to patch your Asterisk to be able to differe the
> > 2 calls (audio and video).
> > Normally, after patching the Asterisk you will have an Asterisk 
> Function
> > called CHANNEL(transfercapability) to get and set the corresponding
> > Signaling information.
> >
> > exten => vxml,n,NoOp(${CHANNEL(transfercapability)})
> >
> > Regards,
> >
> >
> > Borja from i6net
> >
> >
> >
> > Zelalem Sintayehu a écrit :
> > > Hi all, I wanted to know if there is a mechanism to know if a call is
> > > video call before answering it. I want to perform something if a call
> > > is video, and do another thing if it is audio.
> > >
> > > Thank you.
> > >
> > > - Zelalem S.
> > >
> > >
> > > 
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