[Asterisk-Users] G.723.1 codec

Dan Tusa
Sun, 18 Jan 2004 09:45:01 -0000

Had a look at your code and is looking good - need to add it to *

Looked for a conversion tool as well for WAV/GSM ----> G.723.1. (could not
find lbccodec)
Does anybody have a suggestions where to find conversion tools

Cheers
Dan


Andrei Koulik wrote:
>I solve it for h323 in follow way:
>1. Exclude all codecs except g723.1 from h323.conf:
>
>   disallow=ULAW
>   allow=g723.1
>
>2. Add format_g723 module (http://www.agk.nnov.ru/format_g723.c.gz)
>   into project
>
>3. convert all wav and gsm sound into g723 format (use lbccodec from
>    g723_1 demo package, don't ask me where you can download it)
>
>4. set maxsilence=0 in voicemail.conf to suppress conversion into pcm
>    format for silence detection.
>
>And it works fine for me.
>But where are some bugs in h323 module:
>* not supported g7231 without sound detection (simple to fix).
>* sometime data transfer (rtp traffic) begins before negotiation
>  complete and first packet is going in g711 codec and channel going
>  down (not yet reviewed).
>
>if will any question regards format_g723 module send mail to:
>f723 >< agk.nnov.ru
>
>
>
>Friday, January 16, 2004, 10:30:41 PM, Dan Tusa wrote:
>
>DT> Hi,
>
>DT> Want to do some experiments with the G.723 codecs - where can I
>download the
>DT> 723 source code for Asterisk?
>
>DT> I know there are some ongoing discussion regarding patents and
license
>fees
>DT> for the g.723 but I have some hardware on which I only have the 723
and
>need
>DT> to test it privately.
>
>DT> Thanks!
>DT> Dan

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