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

[David fire]

?
GSM is greate! there was a miss understood.
if you transcode more than 90 in a core 2 duo you get a bad audio
GSM to G729 or G711 to G729.

G711 to GSM is ok, but you should test it.


2009/2/24 Alejandro Cabrera Obed <aco1967 at gmail.com>

> Do you think GSM codec has poor audio quality ???
>
> Because I've made some tests among softphones connected from different
> cities of my country and the audio was good to me.
>
> Maybe GSM is a good choice.
>
> On Tue, Feb 24, 2009 at 11:16 PM, David fire <ddfire at gmail.com> wrote:
> > 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
> >>
> >> _______________________________________________
> >> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> >>
> >> asterisk-users mailing list
> >> To UNSUBSCRIBE or update options visit:
> >>   http://lists.digium.com/mailman/listinfo/asterisk-users
> >
> >
> >
> > --
> > (\__/)
> > (='.'=)This is Bunny. Copy and paste bunny into your
> > (")_(")signature to help him gain world domination.
> >
> >
> > _______________________________________________
> > -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> >
> > asterisk-users mailing list
> > To UNSUBSCRIBE or update options visit:
> >   http://lists.digium.com/mailman/listinfo/asterisk-users
> >
>
>
>
> --
> Alejandro Cabrera Obed
> aco1967 at gmail.com
> www.alejandrocabrera.com.ar
>
> _______________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-users
>



-- 
(\__/)
(='.'=)This is Bunny. Copy and paste bunny into your
(")_(")signature to help him gain world domination.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20090224/db817a18/attachment.htm