Posted: Tue Jul 25, 2006 2:39 am Post subject: [Asterisk-video] H324M 3G ISDN
I see that anexe B uses a 3 Byte header MC1 -> MC4 MPL1 -> MPL8 P1 -> P12 = 24 bits = 3 byte ?
So if I understood well, I have to see if the first byte correspond to the rules for anexe A's checksum or annex B's matrix ?
Anex A uses a 1 byte header and anes B uses the 2 bytes one (anex C i don't care.. :)
I don't think the echo is going to work, for example the master-slave negotiation would never end.
From: asterisk-video-bounces@lists.digium.com [mailto:asterisk-video-bounces@lists.digium.com] On Behalf Of Ramtin AminSent: martes, 25 de julio de 2006 13:16To: Development discussion of video media support in AsteriskSubject: RE: [Asterisk-video] H324M 3G ISDN
Thx SergioHow do you figure out if it's complient to annexe A, B, or C... ? And also, do you think that if I do just something likeexten => s,1,Answer()exten => s,2,echo()Would I bee able to see myself in the 3G device ?thx
The 00 00 00 is the mux stuffing pdu as described in anex b.
From: asterisk-video-bounces@lists.digium.com [mailto:asterisk-video-bounces@lists.digium.com] On Behalf Of Ramtin AminSent: martes, 25 de julio de 2006 13:09To: Development discussion of video media support in AsteriskSubject: RE: [Asterisk-video] H324M 3G ISDN
If someone is interested, here is some RAW data without byteswap I could get by echoing the data coming from the B channelSo in there we can see the "87B2000000" that repeats non stop and 87 B2 is 10000111 10110010 and Byteswaped -->> 11100001 01001101 which is E1 4D which is the H223 flag as said in annex A.2.1.1 Figure A.1/H223I guess the 000000 means channel 0 which is H245 ? Could someone give some info about it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
I'm using only outgoing calls due to limitations in our main PBX configuration, so i don't know if there is anything else needed to accept incomming calls.
From: asterisk-video-bounces@lists.digium.com [mailto:asterisk-video-bounces@lists.digium.com] On Behalf Of Ramtin AminSent: lunes, 24 de julio de 2006 18:59To: Development discussion of video media support in AsteriskSubject: RE: [Asterisk-video] H324M 3G ISDN
Would you tell us what you put in the q931.c of the libpri for making asterisk accept the SETUP with the 64kb data option ?Basically what did you modify ?Thx
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.
From: asterisk-video-bounces@lists.digium.com [mailto:asterisk-video-bounces@lists.digium.com] On Behalf Of Ramtin AminSent: lunes, 24 de julio de 2006 8:26To: Development discussion of video media support in AsteriskSubject: RE: [Asterisk-video] H324M 3G ISDN
Well I'm working on ir currentlySo 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 ?
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?
Posted: Tue Jul 25, 2006 3:17 am Post subject: [Asterisk-video] H324M 3G ISDN
Forget what i said, i made the h223 muxer/demuxer some time ago and answered absolutelly wrong.
The h324m levels are:
-level 0: h223 without anexes, no byte aligment, 1 byte flag and hdlc bit stuffing,1 byte header (mc,mpl,hec)
-level 1: h223 anex A, 2 byte flag, 1 byte header (mc,mpl,hec), and CCSRL
-level 2: h223 anex B, 2 byte flag, 3 byte header and ccsrl
-level 3: h223 anex C, another world..
________________________________
From: asterisk-video-bounces@lists.digium.com [mailto:asterisk-video-bounces@lists.digium.com] On Behalf Of Ramtin Amin
Sent: martes, 25 de julio de 2006 13:39
To: Development discussion of video media support in Asterisk
Subject: RE: [Asterisk-video] H324M 3G ISDN
I see that anexe B uses a 3 Byte header MC1 -> MC4 MPL1 -> MPL8 P1 -> P12 = 24 bits = 3 byte ?
So if I understood well, I have to see if the first byte correspond to the rules for anexe A's checksum or annex B's matrix ?
Anex A uses a 1 byte header and anes B uses the 2 bytes one (anex C i don't care.. :)
I don't think the echo is going to work, for example the master-slave negotiation would never end.
________________________________
From: asterisk-video-bounces@lists.digium.com [mailto:asterisk-video-bounces@lists.digium.com] On Behalf Of Ramtin Amin
Sent: martes, 25 de julio de 2006 13:16
To: Development discussion of video media support in Asterisk
Subject: RE: [Asterisk-video] H324M 3G ISDN
Thx Sergio
How do you figure out if it's complient to annexe A, B, or C... ? And also, do you think that if I do just something like
exten => s,1,Answer()
exten => s,2,echo()
Would I bee able to see myself in the 3G device ?
thx
The 00 00 00 is the mux stuffing pdu as described in anex b.
________________________________
From: asterisk-video-bounces@lists.digium.com [mailto:asterisk-video-bounces@lists.digium.com] On Behalf Of Ramtin Amin
Sent: martes, 25 de julio de 2006 13:09
To: Development discussion of video media support in Asterisk
Subject: RE: [Asterisk-video] H324M 3G ISDN
If someone is interested, here is some RAW data without byteswap I could get by echoing the data coming from the B channel
So in there we can see the "87B2000000" that repeats non stop and 87 B2 is 10000111 10110010 and Byteswaped -->> 11100001 01001101 which is E1 4D which is the H223 flag as said in annex A.2.1.1 Figure A.1/H223
I guess the 000000 means channel 0 which is H245 ? Could someone give some info about it ???
I'm using only outgoing calls due to limitations in our main PBX configuration, so i don't know if there is anything else needed to accept incomming calls.
________________________________
From: asterisk-video-bounces@lists.digium.com [mailto:asterisk-video-bounces@lists.digium.com] On Behalf Of Ramtin Amin
Sent: lunes, 24 de julio de 2006 18:59
To: Development discussion of video media support in Asterisk
Subject: RE: [Asterisk-video] H324M 3G ISDN
Would you tell us what you put in the q931.c of the libpri for making asterisk accept the SETUP with the 64kb data option ?
Basically what did you modify ?
Thx
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.
________________________________
From: asterisk-video-bounces@lists.digium.com [mailto:asterisk-video-bounces@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 ?
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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Posted: Wed Jul 26, 2006 3:20 am Post subject: [Asterisk-video] H324M 3G ISDN
Hi matteo
Would it be possible to put online the raw stream you obtained while dialing umts-isdn-umts ?
I'm currently working on a framer. but I need some samples.
thx
Quote:
Subject: RE: [Asterisk-video] H324M 3G ISDN> From: mbrancaleoni@espia.it> To: asterisk-video@lists.digium.com> Date: Fri, 21 Jul 2006 16:55:54 +0200> > Hi,> > we've successfully made a video call between> umts - isdn (bri) - umts and thus recorded> the raw stream (non using zaptel).> Now we're in the phase to finish the H.223 framer> (you cannot use HDLC) and then we'll move> to decoding H245+AMR+H.263 .> > as soon as the framer is finished, is easy> to feed the stream to ethereal and analyse> what's going on it.> > matteo.> > -- > Matteo Brancaleoni> R&D Director> Tel +39.02.70633354> Sip matteo@sip.voismart.it> Iax2 matteo@iax.voismart.it> > _______________________________________________> --Bandwidth and Colocation provided by Easynews.com --> > asterisk-video mailing list> To UNSUBSCRIBE or update options visit:> http://lists.digium.com/mailman/listinfo/asterisk-video
_________________________________________________________________
Posted: Tue Aug 08, 2006 6:36 am Post subject: [Asterisk-video] H324M 3G ISDN
Hi
concerning the 3G gateway, I'b making this page and would like to know if people are interested in contributing to be finally able to make the project.
http://88.191.12.21/3g/
Your comments are welcome.
Posted: Tue Aug 08, 2006 7:17 am Post subject: [Asterisk-video] H324M 3G ISDN
Project is really interesting, I'm just getting into this type of setup.
Maybe we should collaborate ?
Regards,
Tristan Mah?
Ramtin Amin a ?crit :
Quote:
Hi
concerning the 3G gateway, I'b making this page and would like to know
if people are interested in contributing to be finally able to make
the project.
http://88.191.12.21/3g/
Your comments are welcome.
--
Amin Ramtin
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