VoIP Mailing List Archives

[kerrada2003 at yahoo.com]

Hi,

I need FreeSWITCH to transcode from G711 to G723 but I couldn't do so because it supports G723 only in passthru mode. So, what's the solution?

Thanks,

[intralanman at freeswi...]

Ali Al-Rubaie wrote:

[krice at freeswitch.org]

G723 is a patent encumbered codec as is G729. A codec module for trans-coding either of these is not available at this time.

G729 may become available at some point in the future, however I don’t see G723 coming available anytime soon do to facts that there is not much of a demand for it coupled with the high costs of licensing the required patents.



From: Ali Al-Rubaie <kerrada2003@yahoo.com>
Reply-To: <freeswitch-users@lists.freeswitch.org>
Date: Thu, 5 Feb 2009 11:50:30 -0800 (PST)
To: <freeswitch-users@lists.freeswitch.org>
Subject: [Freeswitch-users] Transcoding G723

Hi,

I need FreeSWITCH to transcode from G711 to G723 but I couldn't do so because it supports G723 only in passthru mode. So, what's the solution?

Thanks,



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[brian at freeswitch.org]

This codec patent expires in a few years anyway.

/b

On Feb 5, 2009, at 1:59 PM, Ken Rice wrote:

[sicfslist at gmail.com]

This is a tough deal ... and something that I do think keeps FS out of the same boat as proprietary solutions like Nextone, etc. In the real world (from a service provider view) you have customers who want to send one thing (i.e. g729 and g723 a lot from international carriers) and your vendors who will only accept a limited set (specifically g729 (maybe) and certainly g711 ulaw). So you have to really restrict what people can send you and in some cases it can be a deal killer. I'm seeing more and more wholesale vendors (especially smaller niche guys) getting away from accepting anything other than g711.

I would be interested in seeing if there would be a way to have the RTP transverse a media processing blade like the ones offered from Audiocodes etc.
Most have some method to tell the device to set up ports and bridge without being involved in the signaling itself.


There are a couple of major advantages:
-- removing the transcoding from the host to risc based processors
-- not worrying about the licensing because it comes with the card and would support all codecs


SDR

[brian at freeswitch.org]

If its that critical you can do it: http://jira.freeswitch.org/browse/MODCODEC-7

/b

On Feb 5, 2009, at 2:26 PM, Shelby Ramsey wrote:

[brian at freeswitch.org]

well that'll not scale far

/b

On Feb 5, 2009, at 2:52 PM, Nicolas Brenner wrote:

[nicolas at medularis.com]

I had to go with Asterisk because my VoIP providers only accept G729.
I love FS and I have it on standby until either my providers accept
other codecs (I'm trying to convince them of using Speex), or FS can
transcode G729.
Anyway, congratulations to the whole development team, and everybody
on this list who help other people get started with FS, this is a
really great project/software/platform!

On Thu, Feb 5, 2009 at 5:26 PM, Shelby Ramsey <sicfslist@gmail.com> wrote:

[nicolas at medularis.com]

In my case, I can't use hardware transcoding since I don't have
physical access to the servers, I rent them. Hence I need a pure
software/IP solution.

On Thu, Feb 5, 2009 at 5:45 PM, Brian West <brian@freeswitch.org> wrote:

[sicfslist at gmail.com]

[brian at freeswitch.org]

No clue.. it was just put on jira this past weekend

/b

On Feb 5, 2009, at 3:01 PM, Shelby Ramsey wrote:

[nicolas at medularis.com]

Tell that to the Amazon S3 and Amazon EC2 people

On Thu, Feb 5, 2009 at 5:54 PM, Brian West <brian@freeswitch.org> wrote:

[steveu at coppice.org]

Brian West wrote:

[brian at freeswitch.org]

The hardware in this case... which is why I said it wouldn't scale
far

/b

On Feb 5, 2009, at 5:32 PM, Steve Underwood wrote:

[moises.silva at gmail.com]

At least 1 company is using it in their FS gateway for a call center
of around 125 positions with their this scenario:

Asterisk servers <---- IAX G711 ----> FS Gateway <--- SIP G729 ---> SIP Provider

The G723 has only been tested in my laptop with an IAX connection to
the FS server though. Any testing is certainly appreciated to squeeze
bugs out.

Moy

On Thu, Feb 5, 2009 at 3:01 PM, Shelby Ramsey <sicfslist@gmail.com> wrote: