asterisk users - Apr 2006 - bad voice quality

Hi all,
 i have been having problems with voice quality. We run asterisk Asterisk
CVS-HEAD  version 2.4 as a production servre as a call centre/customer
support engine. Pressenty, we have about 25 soft phones and 10 hard phones
(Perfect Tone SIP phones). when handling internal calls, i usually notice a
lot of static, echo and brakes (this is withing our local network)
Our * runs on a supermicro P4SCi (3GHz) with 2GB memory running Debian
Linux kernel version 2.6.12.3. Currently, we run gsm codec but we recently
installed G729 codec (free version ).

Please advice me on what to do and if more info is needed, i will be happy
to provide more

Thanks
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<p><br />There is a free version of G.729 available? I would be very
interested in that!</p><p>Alex<br /> <br /><br
/><strong>On Mar Abr 18 15:50 , 'Dumpolid Exeplish' 
sent:<br /><br /></strong><blockquote
style="border-left: 2px solid rgb(245, 245, 245); margin-left: 5px;
margin-right: 0px; padding-left: 5px; padding-right: 0px;"><div>Hi
all,</div>

<div> i have been having problems with voice quality. We run asterisk
Asterisk CVS-HEAD  version 2.4 as a production servre as a call centre/customer
support engine. Pressenty, we have about 25 soft phones and 10 hard phones
(Perfect Tone SIP phones). when handling internal calls, i usually notice a lot
of static, echo and brakes (this is withing our local network)

</div>

<div>Our * runs on a supermicro P4SCi (3GHz) with 2GB memory running
Debian Linux kernel version <a
href="http://2.6.12.3">2.6.12.3</a>. Currently, we run gsm
codec but we recently installed G729 codec (free version ).</div>



<div> </div>

<div>Please advice me on what to do and if more info is needed, i will be
happy to provide more</div>

<div> </div>

<div>Thanks</div>

</blockquote>

</p><BR>