[asterisk-dev] iLBC codec

[Artem Makhutov]

Hi,

Andrew Latham schrieb:
> On Tue, Jul 12, 2011 at 12:29 PM, Steve Underwood<steveu at coppice.org>  wrote:
>> On 07/12/2011 11:50 PM, Kevin P. Fleming wrote:
>>>
>>> On 07/12/2011 10:10 AM, Klaus Darilion wrote:
>>>>
>>>> Hi!
>>>>
>>>> I just stumbled about
>>>> https://sites.google.com/site/webrtc/ilbc-freeware
>>>>
>>>> Has somebody checked the new license? Maybe this would allow Asterisk to
>>>> include ilbc codec again in the Asterisk sources and build it by default.
>>>
>>> We have not taken the time to review the new license, no. There is so
>>> little demand for iLBC to be included directly in the Asterisk code that it
>>> hasn't seemed like it would be worth the effort. If someone out there wants
>>> to review the license and give us an initial assessment of whether it
>>> appears to be GPLv2 compatible, that would be a helpful start.
>>>
>> On the mailing list for Opus the subject of iLBC has come up a couple of
>> times, and people like Cisco said iLBC is heavily used in numerous
>> commercial applications. None of the open source VoIP software seem to find
>> much demand for it. Interesting difference. The floating point source code
>> which GIPS published in the RFC is quite slow, and can potentially be
>> speeded up quite a lot. Demand is so low that nobody has ever asked me to
>> attempt that. I suspect Cisco may be shipping lots of copies, just because
>> iLBC is part of the cable VoIP spec, but I think people don't really use it.
>>
>> Steve
>
> Like Steve says, it is a listed feature, but rarely implemented...

Many hardphones have the iLBC codec implemented: Grandstream, Cisco, 
Yealink...

> Can anyone give an example of a system that requires this codec and no
> other?

This is a bad question. What system require speex, g729, g723 or what 
ever codec and no other? Most devices support many codecs.

The main benefit of iLBC codce is that is has a _MUCH_ better audio 
quality then g729 and still requires pretty low bandwith and you do not 
have to pay license fees for using ilbc...

I am using ilbc and I would like to see it in asterisk core. It is 
pretty annoying to compile it manually every time...

Regards, Artem

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