[Asterisk-video] H324M 3G ISDN

[Sergio García Murillo]

H223 Annex B without double headres (H324M level 2). 
If you are looking at the UCLA/Samsung h223 simulator i understand that you think it's not easy, but i have still not found any device (phone or gateway), that implements annex C.
I use zaptel and a libpri, it would need some modification in order to be configurable, but hardcoding the q931 setup info is quite easy.
 
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From: asterisk-video-bounces at lists.digium.com [mailto:asterisk-video-bounces at lists.digium.com] On Behalf Of Ramtin Amin
Sent: lunes, 24 de julio de 2006 8:26
To: Development discussion of video media support in Asterisk
Subject: RE: [Asterisk-video] H324M 3G ISDN


Well I'm working on ir currently
So if we want to do it, since it doesn't look that easy, we better share our knowledge about it.
Sergio: In H223, which annexe is used ?
I've found some interesting stuff capable of handling the H223+245 but I wanted to understand it more and when you look at the ITU, and it gets into the Golay(24,12) and BCH code, it starts to become more complicated :)
Tell us more about your expiriance: you modified the libpri for answering correctly the q.931 ? You use /don't use  zaptel ? How do you capture raw data ? cat /dev/zap/12 ? or with an app_zapgrab ?
DO you use BRI or PRI ?
 





 


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	Subject: RE: [Asterisk-video] H324M 3G ISDN
	Date: Mon, 24 Jul 2006 08:15:06 +0200
	From: Sergio.Garcia at ydilo.com
	To: asterisk-video at lists.digium.com
	
	
	Hi everyone, 
	 
	    It's good to see that i'm not the only one developping int this subject. 
	I have been working on an h234M library, i have finished AL1 and AL2 of h223 (level 2 profile), and almost finished the h245 negotiators. I have been able to establish a videocall between an asterisk box and a motorola phone, but i'm having problems with the negotiations on other phones. 
	Are any one of you going to start an open source proyect?
	 
	Greetings 
	    Sergio
	 


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