[asterisk-users] is g729 codec free? or under license???

[Darryl Moore]

Hi guys. 

I would also add that in countries which do not recognize software
patents (New Zealand for example) there is no need to get a license and
the codecs can therefore be downloaded from http://asterisk.hosting.lv/
and used freely.

In countries where there is ambiguity about certain software patents,
(such as Canada or Germany).... well you take your chances. Countries
that do recognize them (such as the US or Japan) you'd be smart to get a
license.

Also I do believe the US patent on g729 expires next year anyway, so
again you might want to weigh that costs/risks factor too.


cheers,
darryl

On Wed, 2013-10-02 at 09:55 -0400, Bryant Zimmerman wrote:
> When calling between two g729 client endpoints you do not need any
> licenses as long as no audio prompts or voicemail is evolved. Also as
> a sip trunk provider we offer g729 as a source and destination codec
> this allows you to make calls in and out using g729 (most carrier
> grade providers offer this option)
> 
>  
> 
> You really only need to buy the number of g729 licenses that you will
> need for callers that require simultaneous transcoding. This is when a
> callers stream in or out will need to be converted to another
> codec format.  This occurs when callers are jumping from say g729 to
> g711 or g729 to g722, g729 to gsm. If you plan things right and make
> sure any audio prompts your system is using are recorded in g729 as
> well as g711 and g722 you will reduce the number of g729 license
> considerable. 
> 
>  
> 
> Process that use a lot of g729 transcodes. ConfBridge uses g722 so all
> g729 has to be converted to and from g722 so 10 g729 callers to a
> confbridge would likely require 10 codecs (**See confbridge trick
> below). If you have prompts that are not pre-encoded in g729 those
> would use a transcoder license while playing.  Voicemail would require
> a license as g729 has to be transcoded to one of the storage formats. 
> 
>  
> 
> The real number is based on how you are using your system. 
> 
>  
> 
> ConfBridge Trick - Have seen this used for voicemail as well, Make
> sure you test when using this method. 
> 
>   If you can live with using higher bandwidth to the asterisk switch
> when using confbridges (endpoints also have to support in call
> reinvites correctly) you can force endpoints to re-invite to g722
> before dropping into the conference bridge. This has the upside of not
> needing to transcode on the server thus improving performance and
> reducing g729 license requirements. This comes at the cost of needing
> higher bandwidth between the client endpoints and the phone.  Figure
> about double the bandwidth when using this method. It may or may not
> be worth it to you depending on your scenario.
> 
>  
> 
> Please let us know if this information helps you. 
> 
>  
> 
> Thanks
> 
> 
> Bryant Zimmerman 
>  
> Sr. Systems Architect
> Grand Dial Communications, A ZK Tech Inc. Company
> 616-299-5607 (mobile) 
> 616-855-1030 Ext. 2003 (office) 
> 
> 
> 
> ______________________________________________________________________
> From: "Don Kelly" <dk at donkelly.biz>
> Sent: Wednesday, October 2, 2013 9:30 AM
> To: "Asterisk Users Mailing List - Non-Commercial Discussion"
> <asterisk-users at lists.digium.com>
> Subject: Re: [asterisk-users] is g729 codec free? or under license???
> 
> In your scenario, all the calls are from endpoints on 181 to endpoints
> on 183. If the endpoint devices are similar, it seems to me that there
> should be no need to transcode-you can use a codec common to the
> endpoints. 729 would not be required.
> 
> --Don
> 
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of s m
> Sent: Wednesday, October 02, 2013 2:34 AM
> To: Dominik George
> Cc: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] is g729 codec free? or under license???
> 
>  
> 
> thank you Dominik you help me a lot.
> 
>  and the last question is how many license key should i buy? i read
> that license for g729 is per-channel but i don't understand what
> channel exactly means here. this is my scenario :
> 
> 
> 10endpoints....pbx181...pbx182...pbx183...10endpoints
> 
> 
> pbx181 and pbx183 has 10 endpoints connected to them. the call between
> these endpoints are established by pbx182. if i want to buy a license
> for pbx182, how many license key do i need? just one because i have
> just one connection on it?  or two, because two trunks is defined on
> it? or as many as endpoints which are connected to each other via
> pbx182?
> 
> 
> please help me to clarify channel concept in my mind.
> 
> 
> thanks in advance
> 
> 
> SAM
> 
> 
>  
> 
> On Tue, Oct 1, 2013 at 11:34 AM, Dominik George <nik at naturalnet.de>
> wrote:
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
> 
> 
> Hi,
> 
> 
> >about g729, you mean if it get free g729 and all my systems (PBXs and
> >routers) use g729 codec for setting a call, call is set without any
> >problem?
> 
> 
> Yes, if all systems use g729 directly, you are ready to go.
> 
> - -nik
> 
> -----BEGIN PGP SIGNATURE-----
> Version: APG v1.0.8-fdroid
> 
> 
> iQFMBAEBCgA3BQJSSoHxMBxEb21pbmlrIEdlb3JnZSAobW9iaWxlIGtleSkgPG5p
> a0BuYXR1cmFsbmV0LmRlPgAKCRAvLbGk0zMOJYmRB/USyTbAqhAsnFZSGGjIcLK7
> uQ3nsVNGcmE18LaBN/XFicwp5UjVB5Euju+fjKu1FhqAzECsAPMup/1JUytikmYz
> +32wV5YL1SNKMA/ddi/zvVa9qIbKA9yP1HuBilpD+W0DO3hdnzr2xrdR1S2z5PGZ
> pnYWsVlXbWYEslOuK1oaMqINoxWbsQulwQi86GPTCwPtZmhcLrvBm1sDFxWb/oPP
> lsPy33ZH5BeQ/XEf6nWfoiEu4Hk2S0brCH74zsz9uD6PKL1CFdLcpWv/4k5M+Mly
> At2PC+leZZ/TX3VNqbasslQkyv/QLZIQVtG0qQ7DGflnkrzNi5/pNV7CVT5sdPQ=
> =5rja
> -----END PGP SIGNATURE-----
> 
> 
>  
> 
> 
>