Posted: Fri Jul 21, 2006 5:04 am Post subject: [Asterisk-video] H324M 3G ISDN
Hi
Someone knows if when receiving a video call on a PRI, it uses only 1 B channel all long ( 64kb) or it has the capacity to use more than one ?
I saw somewhere in this mailing list that there was people working on sending video over a E1 for example.
Has someone successed to do a simple Echo of a call coming from a 3G phone (umts) ?
Someone knows if the data coming in this case are converted or still 3GP format (h263 + AMR)
thx
Posted: Fri Jul 21, 2006 5:23 am Post subject: [Asterisk-video] H324M 3G ISDN
Hi Ramtin,
There is no support for video on BRI or PRI at the moment. There is
some work on H.324M for 3G going on but it may not be provided back to
the community. H.320 support for BRI and PRI is possible but nobody has
picked up the ball yet (to my knowledge).
From: asterisk-video-bounces@lists.digium.com
[mailto:asterisk-video-bounces@lists.digium.com] On Behalf Of Ramtin
Amin
Sent: 21 July 2006 15:05
To: Development discussion of video media support in Asterisk
Subject: [Asterisk-video] H324M 3G ISDN
Hi
Someone knows if when receiving a video call on a PRI, it uses only 1 B
channel all long ( 64kb) or it has the capacity to use more than one ?
I saw somewhere in this mailing list that there was people working on
sending video over a E1 for example.
Has someone successed to do a simple Echo of a call coming from a 3G
phone (umts) ?
Someone knows if the data coming in this case are converted or still 3GP
format (h263 + AMR)
thx
________________________________
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Posted: Fri Jul 21, 2006 5:32 am Post subject: [Asterisk-video] H324M 3G ISDN
Well I'm on it right now,
hoping to be able to make a 3G gateway capability to asterisk
But aparently, it's not gonna be that easy
As long as I know, the data sent to a 3G phone are 3GPP (h263/mpeg4 + AMR) but I don't know if it's to asterisk to send the data in this format or asterisk will have to send the data in the one used by standar ISDN video phone....
Also, I guess the Q931 has to reply to the SETUP saying that it has video capability.. but afterward, who's turn is it to deal with the data ?
john: do you IRC ? :)
Hi Ramtin,
There is no support for video on BRI or PRI at the moment. There is some work on H.324M for 3G going on but it may not be provided back to the community. H.320 support for BRI and PRI is possible but nobody has picked up the ball yet (to my knowledge).
From: asterisk-video-bounces@lists.digium.com [mailto:asterisk-video-bounces@lists.digium.com] On Behalf Of Ramtin AminSent: 21 July 2006 15:05To: Development discussion of video media support in AsteriskSubject: [Asterisk-video] H324M 3G ISDN
HiSomeone knows if when receiving a video call on a PRI, it uses only 1 B channel all long ( 64kb) or it has the capacity to use more than one ?I saw somewhere in this mailing list that there was people working on sending video over a E1 for example.Has someone successed to do a simple Echo of a call coming from a 3G phone (umts) ?Someone knows if the data coming in this case are converted or still 3GP format (h263 + AMR)thx
Posted: Fri Jul 21, 2006 5:51 am Post subject: [Asterisk-video] H324M 3G ISDN
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.
Posted: Fri Jul 21, 2006 5:57 am Post subject: [Asterisk-video] H324M 3G ISDN
Hi matteo
I'm interested in there so I want to know how I could help.
First, on the q931, what do you respond to the SETUP ?
Also, you say that you record the raw stream and you play it back ? it basically means that you do an echo ?What hardware do you use for the ISDN, and also, would you confirm to me that the data coming from the ISDN is on 1 B channel and not more, in h263+amr ?
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: Sun Jul 23, 2006 9:15 pm Post subject: [Asterisk-video] H324M 3G ISDN
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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Posted: Sun Jul 23, 2006 9:26 pm Post subject: [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?
Posted: Sun Jul 23, 2006 9:34 pm Post subject: [Asterisk-video] H324M 3G ISDN
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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--------------------------------------------------------------------------------------
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for the use of the individual or entity to whom they are addressed. No confidentiality
or privilege is waived or lost by any wrong transmission.
If you have received this message in error, please immediately destroy it and kindly
notify the sender by reply email.
You must not, directly or indirectly, use, disclose, distribute, print, or copy any
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Posted: Mon Jul 24, 2006 7:59 am Post subject: [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?
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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If you have received this message in error, please immediately destroy it and kindly
notify the sender by reply email.
You must not, directly or indirectly, use, disclose, distribute, print, or copy any
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thx sergio
I'll have to feddle with it a bit and i'll come back to you.
The good news is that for people that don't have a PRI to play with, some voip provider that have g711 codec ( most of them) sends you the h223 msg in raw
I've been capable of seeing raw frames and can identify the flag ( have to inverse them tho: 11000101 -> 10100011)
What I need to do now is an Echo() so i see if there are more going on.
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 2:09 am Post subject: [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 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 2:12 am Post subject: [Asterisk-video] H324M 3G ISDN
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
________________________________
Be one of the first to try Windows Live Mail. <http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d>
________________________________
Be one of the first to try Windows Live Mail. <http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d>
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This message and any files transmitted with it are confidential and intended solely
for the use of the individual or entity to whom they are addressed. No confidentiality
or privilege is waived or lost by any wrong transmission.
If you have received this message in error, please immediately destroy it and kindly
notify the sender by reply email.
You must not, directly or indirectly, use, disclose, distribute, print, or copy any
part of this message if you are not the intended recipient. Opinions, conclusions and
other information in this message that do not relate to the official business of
Ydilo Advanced Voice Solutions, S.A. shall be understood as neither given nor endorsed by it.
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Posted: Tue Jul 25, 2006 2:15 am Post subject: [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 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 2:25 am Post subject: [Asterisk-video] H324M 3G ISDN
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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