I'll explain. The g.729 compression algorithm is not protected by copyright, though specific instances may be. It is protected by a patent.
http://www.sipro.com/G-729.html An open source version is available here: http://asterisk.hosting.lv/ What stops you from using this, or even your own implementation isn't copyright, but patent protection. It is the right to use the patented technology that you are licensing, not the particular copyrighted coded that implements it. Here you will find the various G.729 patents which were all granted in 1996. https://www.itu.int/ITU-T/recommendations/related_ps.aspx?id_prod=3334 I had thought these expired next year because I was thinking patents were only 18 years. Turns out they are now 20 years, so they really do not expire til some time in 2016. My bad. So in countries that honour software patents, you need to have a license until some time in 2016. In countries which do not, you are free to use these open source codes now. cheers. On Fri, 2013-10-04 at 15:55 +0200, Olivier wrote: > > Hmmmm, I'm not sure how g729 licence and software patents relate to > each other. > > > -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
