Multiconference with g729 users only without transcoding
Hi, I would like to know if is there a configuration in freeswitch to allow multiconferencing for g729 users but without transcoding? It seems that all users are converted to L16 and it's not possible to have passthrough mode in conference rooms. Best Regards, Lluís
Seems logical to have the voice decoded to mix it in a conference, how could someone mix G.729 encoded voice is your question I guess? Good luck! Guillaume Renaud, ing. On Tue, Mar 15, 2011 at 8:21 AM, Lluís Riera <lluis.riera@quarea.com> wrote:
Hi,
I would like to know if is there a configuration in freeswitch to allow multiconferencing for g729 users but without transcoding? It seems that all users are converted to L16 and it’s not possible to have passthrough mode in conference rooms.
Best Regards,
Lluís
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I want to have a pure g729 multiconference in passthrough mode, all participants would be g729 phones and all audios would be in g729 format… that way I will not have to buy a transcoding card or license. De: Guillaume Renaud [mailto:guillaume.renaud@gmail.com] Enviado el: martes, 15 de marzo de 2011 13:52 Para: FreeSWITCH Users Help CC: Lluís Riera Asunto: Re: [Freeswitch-users] Multiconference with g729 users only without transcoding Seems logical to have the voice decoded to mix it in a conference, how could someone mix G.729 encoded voice is your question I guess? Good luck! Guillaume Renaud, ing. On Tue, Mar 15, 2011 at 8:21 AM, Lluís Riera <lluis.riera@quarea.com> wrote: Hi, I would like to know if is there a configuration in freeswitch to allow multiconferencing for g729 users but without transcoding? It seems that all users are converted to L16 and it’s not possible to have passthrough mode in conference rooms. Best Regards, Lluís _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
On 03/15/2011 09:00 PM, Lluís Riera wrote:
I want to have a pure g729 multiconference in passthrough mode, all participants would be g729 phones and all audios would be in g729 format… that way I will not have to buy a transcoding card or license.
How do you think multiple G.729 input signals might be combined into a common G.729 output signal, without decoding and mixing the linear signals? Steve
You can not make conferences work in paasthrough mode. On Mar 15, 2011 6:29 PM, "Steve Underwood" <steveu@coppice.org> wrote:
On 03/15/2011 09:00 PM, Lluís Riera wrote:
I want to have a pure g729 multiconference in passthrough mode, all participants would be g729 phones and all audios would be in g729 format… that way I will not have to buy a transcoding card or license.
How do you think multiple G.729 input signals might be combined into a common G.729 output signal, without decoding and mixing the linear signals?
Steve
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MAYBE if you would *strictly* have only one speaker at a time, with no volume adjustments etc, then maybe you can hack something together about a conference in g729 w/o transcoding. Maybe. -Avi
The answer would be NO. /b On Mar 15, 2011, at 9:05 AM, Avi Marcus wrote:
MAYBE if you would *strictly* have only one speaker at a time, with no volume adjustments etc, then maybe you can hack something together about a conference in g729 w/o transcoding. Maybe.
-Avi _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
On 03/15/2011 10:05 PM, Avi Marcus wrote:
MAYBE if you would *strictly* have only one speaker at a time, with no volume adjustments etc, then maybe you can hack something together about a conference in g729 w/o transcoding. Maybe. You can extract the energy from the encoded frames, but knowing which energy to choose is another matter. Just taking the greatest energy will lead to rapid hoping amongst speakers. If you are more relaxed about switching speaker you will miss the start of voice spurts. The loudest might not even be the most relevant speaker.
Steve
You mean a "bridge"? ;) If you plan always to do it like that, a bridge or call queues is better. There's nothing in mod_conference that'd allow you to do that and it wouldn't be worth the complexity to implement. -Steve On 15 March 2011 14:05, Avi Marcus <avi@avimarcus.net> wrote:
MAYBE if you would *strictly* have only one speaker at a time, with no volume adjustments etc, then maybe you can hack something together about a conference in g729 w/o transcoding. Maybe.
-Avi
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Sorry, but that's impossible. For a conference you have multiple streams coming into the switch from each caller. They have to be mixed to combine them into a single stream to send to each member of the conference. Mixing multiple streams can only be done on the raw audio data (L16) - it requires transcoding. -Steve On 15 March 2011 12:21, Lluís Riera <lluis.riera@quarea.com> wrote:
Hi,
I would like to know if is there a configuration in freeswitch to allow multiconferencing for g729 users but without transcoding? It seems that all users are converted to L16 and it’s not possible to have passthrough mode in conference rooms.
Best Regards,
Lluís
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On Tue, Mar 15, 2011 at 5:21 AM, Lluís Riera <lluis.riera@quarea.com> wrote:
Hi,
I would like to know if is there a configuration in freeswitch to allow multiconferencing for g729 users but without transcoding? It seems that all users are converted to L16 and it’s not possible to have passthrough mode in conference rooms.
Yeah, this is a bad idea for all the reasons that the others have stated. It is SOOO much easier just to shell out $10 per channel and get the g729 licenses. -MC
On Tue, Mar 15, 2011 at 5:21 AM, Lluís Riera <lluis.riera@quarea.com>wrote:
Hi,
I would like to know if is there a configuration in freeswitch to allow multiconferencing for g729 users but without transcoding? It seems that all users are converted to L16 and it’s not possible to have passthrough mode in conference rooms.
You need to mix the audio from all the parties, not just pass it thru, therefore, transcoding to linear is needed. Moises Silva Senior Software Engineer Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON L3R 9R6 Canada t. 1 905 474 1990 x128 | e. moy@sangoma.com
Thank You for all your answers!!! I got a clear picture now J De: Michael Collins [mailto:msc@freeswitch.org] Enviado el: martes, 15 de marzo de 2011 21:35 Para: FreeSWITCH Users Help Asunto: Re: [Freeswitch-users] Multiconference with g729 users only withouttranscoding On Tue, Mar 15, 2011 at 5:21 AM, Lluís Riera <lluis.riera@quarea.com> wrote: Hi, I would like to know if is there a configuration in freeswitch to allow multiconferencing for g729 users but without transcoding? It seems that all users are converted to L16 and it's not possible to have passthrough mode in conference rooms. Yeah, this is a bad idea for all the reasons that the others have stated. It is SOOO much easier just to shell out $10 per channel and get the g729 licenses. -MC
Lluís Riera wrote:
I would like to know if is there a configuration in freeswitch to allow multiconferencing for g729 users but without transcoding? It seems that all users are converted to L16 and it's not possible to have passthrough mode in conference rooms. I am just curious here. Does your FS do the transcode in both directions, i.e. G729 (caller) -> L16 (FS) -> G729 (Caller)?
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On Wed, Mar 16, 2011 at 7:00 AM, mazilo <Nabble@slickdeals.endjunk.com>wrote:
Lluís Riera wrote:
I would like to know if is there a configuration in freeswitch to allow multiconferencing for g729 users but without transcoding? It seems that all users are converted to L16 and it's not possible to have passthrough mode in conference rooms. I am just curious here. Does your FS do the transcode in both directions, i.e. G729 (caller) -> L16 (FS) -> G729 (Caller)?
Without looking at the code, my guess is that it depends. If the caller is muted only L16 -> G729 will be done since all incoming audio is discarded. Moises Silva Senior Software Engineer Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON L3R 9R6 Canada t. 1 905 474 1990 x128 | e. moy@sangoma.com
participants (10)
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Avi Marcus
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Brian West
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Ghulam Mustafa
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Guillaume Renaud
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Lluís Riera
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mazilo
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Michael Collins
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Moises Silva
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Steve Underwood
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Steven Ayre