[Freeswitch-users] SILK Codec

Steve Underwood steveu at coppice.org
Sat Mar 13 02:16:51 PST 2010

On 03/13/2010 04:51 PM, Jason White wrote:
> Code has now been posted at https://developer.skype.com/silk/
> It appears from that page that there may be patent issues for anything other
> than testing of the codec, although it is stated elsewhere that the licence
> terms are royalty-free.
That sounds like they are trying for a similar arrangement Polycom has 
with G.722.1. You can use G.722.1 royalty free, if you ask for a licence 
first and comply with some simple conditions - mostly ensuring that you 
properly follow the G.722.1 spec. It works well enough for most 
purposes, though it conflicts with some free licences, and there have 
been some disagreements. For example, Polycom said it was OK for 
Freeswitch to be distributed with the source code for G.722.1 bundled. 
It seems Digium believe Asterisk may not be distributed with the source 
code for G.722.1.
> To build the module (for those planning to do the aforementioned testing) you
> need to run make in libs/silk first to compile the library, then build
> FreeSWITCH; this will change once the build system is updated appropriately.

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