Per my conversation below with digium, are there any legal alternatives to digium's G729? It is out of date, and doesn't support VAD nor silence detection. Digium has stated that they have no plans to update it anytime soon. VAD/Silence is a big deal with major carriers and we are having to fight a battle to get them to make special arrangements to turn off VAD/Silence in their equipment. Most won't. RFC3389 states that G729 Annex B supports VAD/DTX/CNG but Digium's 729 is based off annex A; and again, they don't have plans to update it. Is there anyone out there with news on VAD/Silence support in Asterisk? Thanks, Matthew -------- Original Message -------- Subject: [digium.com #25781] VAD in G729 Date: Wed, 20 Jul 2005 13:22:28 -0500 (CDT) From: Chris Hozian via RT <support@digium.com> Reply-To: support@digium.com To: mboehm@cytelcom.com Hello, We do not know of anyone else who is providing the G.729 codec for Asterisk. Regards, Chris Hozian> [mboehm@cytelcom.com - Wed Jul 20 13:04:21 2005]: > > Are there other ways to get G729 into asterisk other than using your > codec? I'd like to buy the codec from someone else who is keeping their > software up to date. > > Thanks, > Matthew >-- Hello, There is no ETA on this. Please email sales@digium.com or call 1-877-LINUX-ME (1-877-546-8963) to talk with our sales department about purchasing developpment time. We offer open-source development support for $200.00 an hour. Proprietary (closed-source) development support costs $300.00 an hour. You may find out more by visiting http://www.digium.com/index.php?menu=services . Regards, Chris Hozian >> [mboehm@cytelcom.com - Wed Jul 20 10:44:41 2005]: >> >> When can we expect VAD/Silence Detection in Digium's implementation of >> G729? We have many carriers and customers to hook up to but they all >> need/require VAD/Silence. >> >> When can we expect it? Is there beta testing available? Is anyone >> working on it? >> >> Thanks, >> Matthew
Eric Wieling aka ManxPower
2005-Jul-20 12:47 UTC
[Asterisk-Users] Alternatives to Digium 729
Matthew Boehm wrote:> > Is there anyone out there with news on VAD/Silence support in Asterisk?Asterisk does not support VAD. If you need VAD then don't use Asterisk. --Eric -- Eric Wieling * BTEL Consulting * 504-210-3699 x2120
My understanding was that Asterisk does not cope with silence suppression in any case. It requires a constant stream for timing purposes. But I'm no expert. Michael On Wed, 20 Jul 2005 13:47:30 -0500, Matthew Boehm wrote:>Per my conversation below with digium, are there any legal alternatives >to digium's G729? It is out of date, and doesn't support VAD nor silence >detection. > >Digium has stated that they have no plans to update it anytime soon. > >VAD/Silence is a big deal with major carriers and we are having to fight >a battle to get them to make special arrangements to turn off >VAD/Silence in their equipment. Most won't. > >RFC3389 states that G729 Annex B supports VAD/DTX/CNG but Digium's 729 >is based off annex A; and again, they don't have plans to update it. > >Is there anyone out there with news on VAD/Silence support in Asterisk? > >Thanks, >Matthew > >-------- Original Message -------- >Subject: [digium.com #25781] VAD in G729 >Date: Wed, 20 Jul 2005 13:22:28 -0500 (CDT) >From: Chris Hozian via RT <support@digium.com> >Reply-To: support@digium.com >To: mboehm@cytelcom.com > >Hello, > >We do not know of anyone else who is providing the G.729 codec for Asterisk. > >Regards, >Chris Hozian > >> [mboehm@cytelcom.com - Wed Jul 20 13:04:21 2005]: >> >> Are there other ways to get G729 into asterisk other than using your >> codec? I'd like to buy the codec from someone else who is keeping their >> software up to date. >> >> Thanks, >> Matthew >> >-- > >Hello, > >There is no ETA on this. > >Please email sales@digium.com or call 1-877-LINUX-ME (1-877-546-8963) to >talk with our sales department about purchasing developpment time. We >offer open-source development support for $200.00 an hour. Proprietary >(closed-source) development support costs $300.00 an hour. You may find >out more by visiting http://www.digium.com/index.php?menu=services . > >Regards, >Chris Hozian > > > >> [mboehm@cytelcom.com - Wed Jul 20 10:44:41 2005]: > >> > >> When can we expect VAD/Silence Detection in Digium's implementation of > >> G729? We have many carriers and customers to hook up to but they all > >> need/require VAD/Silence. > >> > >> When can we expect it? Is there beta testing available? Is anyone > >> working on it? > >> > >> Thanks, > >> Matthew > > > > >_______________________________________________ >Asterisk-Users mailing list >Asterisk-Users@lists.digium.com >http://lists.digium.com/mailman/listinfo/asterisk-users >To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > >-- Michael Graves mgraves@pixelpower.com Sr. Product Specialist www.pixelpower.com Pixel Power Inc. mgraves@mstvp.com o713-861-4005 o800-905-6412 c713-201-1262
> Per my conversation below with digium, are there any legal alternatives > to digium's G729? It is out of date, and doesn't support VAD nor silence > detection. > > Digium has stated that they have no plans to update it anytime soon. > > VAD/Silence is a big deal with major carriers and we are having to fight > a battle to get them to make special arrangements to turn off > VAD/Silence in their equipment. Most won't. > > RFC3389 states that G729 Annex B supports VAD/DTX/CNG but Digium's 729 > is based off annex A; and again, they don't have plans to update it. > > Is there anyone out there with news on VAD/Silence support in Asterisk?The internal architecture of asterisk right now is based on sending a packet for each packet received (timing), therefore asterisk is not currently compatible with VAD/Silence support regardless of which codec you use. (eg, its not a codec issue at all.) There was some discussion in the past about changing that architecture, but my understanding is that it's not a trevial task at all. Might search the archives for more accurate detail.
On Wed, 2005-07-20 at 13:47 -0500, Matthew Boehm wrote:> Per my conversation below with digium, are there any legal alternatives > to digium's G729? It is out of date, and doesn't support VAD nor silence > detection.Well, I guess it supports what it is supposed to, ie, g729a :) since the required features for g729a do not include those items, then the codec is perfectly up to date :)> Digium has stated that they have no plans to update it anytime soon.You mean no plans on implementing a new codec which supports g729b ?> Is there anyone out there with news on VAD/Silence support in Asterisk?Evidently not, but if you really want it, post a bounty on the wiki, and an email here about it. I'm sure you would attract other people willing to contribute to the bounty.... You might also ask digium to give you some sort of 'quote/estimate' for implementing this, then when you post the bounty, you can include how much you need to raise in order for digium to actually do the work. Probably before you get as much money as you need, someone else from the asterisk community would implement the asterisk components for less than $200/hour :) Then you can just get digium to update the codec which will probably be relatively easy .... Of course, I don't know everything :) PS, alternatively, use some sort of translation device which will convert your * SIP ulaw -> Translator SIP g729b -> supplier..... Regards, Adam