[asterisk-users] GSM codec is a good choice ???

[David fire]

out there is a free for educational and no commercial G729 lib for asterisk
you can use it to test in a non-comercial system.
the digium lib is much better. if you have more than 30~60 phones
transcoding inst a very good idea.
i made my self a test on a core 2 duo 64 bits 2GB of ram a test transcoding
more than 90 calls the sound quality was BAD not poor BAD.

the digium transcoder is GREATE 0 cpu was gone for transcoding.

keep this in mind.

David

2009/2/24 Kristian Kielhofner <kristian.kielhofner at gmail.com>

> On Mon, Feb 23, 2009 at 6:59 PM, Alejandro Cabrera Obed
> <aco1967 at gmail.com> wrote:
> > Dear all, I have Asterisk 1.4 with SIP. I have a voicemail implemented
> > with GSM sound files.
> >
> > The problem is I have IP phones Utopix HyperPhone 202 which support
> > only G.729a/u and G.723.1 high/low, but not GSM.
> >
> > If I choose G.729A the "pass-throu" calls among users are OK, but
> > Asterisk can't transcode GSM to G.729A in voicemail calls.
> >
> > My company doesn'y want to pay for a G.729 license, so I'm thinking to
> > buy new IP phones with GSM support, so I have no problem with the
> > voicemail system.
> >
> > Are the IP phone with GSM support a good choice for me ???
> >
> > (Maybe in the future I need to connect the Asterisk with the PSTN, GSM
> > doesn't matter at this point ???)
> >
> > Really thanks,
> >
> > Alejandro
> >
>
> Install the G.729 sound files and make app_voicemail record messages
> (format=g729) in G729.  As long as you don't need meetme or a few
> other apps that essentially require G.729 transcoding you don't need a
> license.
>
> --
> Kristian Kielhofner
> http://blog.krisk.org
> http://www.submityoursip.com
> http://www.astlinux.org
> http://www.star2star.com
>
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