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

[Zelalem Sintayehu]

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.
> >
> >
> > ------------------------------------------------------------------------
> > Invite your mail contacts to join your friends list with Windows Live 
> > Spaces. It's easy! Try it! 
> > <http://spaces.live.com/spacesapi.aspx?wx_action=create&wx_url=/friends.aspx&mkt=en-us> 
> >
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > --Bandwidth and Colocation Provided by http://www.api-digital.com--
> >
> > asterisk-video mailing list
> > To UNSUBSCRIBE or update options visit:
> >    http://lists.digium.com/mailman/listinfo/asterisk-video
> 
> _______________________________________________
> --Bandwidth and Colocation Provided by http://www.api-digital.com--
> 
> asterisk-video mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-video

_________________________________________________________________
Drag n’ drop—Get easy photo sharing with Windows Live™ Photos.

http://www.microsoft.com/windows/windowslive/products/photos.aspx
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-video/attachments/20090513/04d05163/attachment.htm