asterisk users - Feb 2007 - Meetme - is this statement from the Wiki still true?

"The conference bridge runs Ulaw codec by default. If you let people
connect
with GSM or other codecs, Asterisk will use CPU power to convert audio
between codecs" ... What about alaw channels is there any transcoding work
being done there?
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I don't know whether the Asterisk default codec is still ulaw or not,
though I believe it is.

	But it doesn't matter. Any connection in the same call between multiple
legs which each use a different codec, whether GSM or otherwise, will of
course require Asterisk to consume CPU in transcoding between the two
different encodings. Each leg gets a codec which transcodes to
Asterisk's native encoding (which I believe is ulaw), in which encoding
mixing and other signal processing is performed, before reencoding back
into the encoding each leg uses.


On Thu, 2007-02-15 at 15:31 -0700,
asterisk-users-request@lists.digium.com wrote:
> Date: Fri, 16 Feb 2007 08:42:49 +1100
> From: "Eric Bishop" <asterisk.eric@gmail.com>
> Subject: [asterisk-users] Meetme - is this statement from the Wiki
>         still   true?
> To: "Asterisk Users Mailing List - Non-Commercial Discussion"
>         <asterisk-users@lists.digium.com>
> Message-ID:
>         <4acda1b40702151342s5fccad40r5c47499b4675ed84@mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> "The conference bridge runs Ulaw codec by default. If you let people
> connect
> with GSM or other codecs, Asterisk will use CPU power to convert audio
> between codecs" ... What about alaw channels is there any transcoding
> work
> being done there? 
-- 

(C) Matthew Rubenstein