depends on the capabilities of your endpoints and the endpoints codec priority list.<br><br>CCM has a service parameter where CCM will strip g729b thus preventing it from being used in your network. I usually turn this parameter on during installs to prevent the use of silence suppression.
<br><br>Look for ccm service parameter "strip g729 annex B"<br><br>Justin<br><span style="font-size: 8pt; font-family: "Times New Roman";"></span><br><br><div><span class="gmail_quote">On 8/3/07, <b class="gmail_sendername">
Ruttman, Pete G.</b> <<a href="mailto:PRuttman@foley.com">PRuttman@foley.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div vlink="purple" link="blue" lang="EN-US">
<div dir="ltr" align="left"><font color="#0000ff" face="Arial" size="2"><span>Okay. Let me rework that question. When I
select g729 in Callmanager what version of g729 is actually
used?</span></font><br></div>
<div dir="ltr" align="left" lang="en-us">
<hr>
<font face="Tahoma" size="2"><b>From:</b> Chris D'amore
[mailto:<a href="mailto:CDAmore@jackhenry.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">CDAmore@jackhenry.com</a>] <br><b>Sent:</b> Friday, August 03, 2007 2:00
PM<br><b>To:</b> Ruttman, Pete G.<br><b>Subject:</b> RE: [cisco-voip] IOS
conferencing question<br></font><br></div>
<div></div>
<div>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; color: navy; font-family: Arial;">You should not use
g729b at all in your network. This is because VAD is enabled in this codec. It
can't be disabled with using g729b.</span></font></p>
<p><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; color: navy; font-family: Arial;"> </span></font></p>
<div>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<p><b><font face="Tahoma" size="2"><span style="font-weight: bold; font-size: 10pt; font-family: Tahoma;">From:</span></font></b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;">
<a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">cisco-voip-bounces@puck.nether.net</a> [mailto:<a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
cisco-voip-bounces@puck.nether.net</a>]
<b><span style="font-weight: bold;">On Behalf Of </span></b>Ruttman, Pete
G.<br><b><span style="font-weight: bold;">Sent:</span></b> Wednesday, August 01,
2007 5:30 PM<br><b><span style="font-weight: bold;">To:</span></b>
<a href="mailto:cisco-voip@puck.nether.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">cisco-voip@puck.nether.net</a><br><b><span style="font-weight: bold;">Subject:</span></b> [cisco-voip] IOS conferencing
question</span></font></p></div><div><span class="e" id="q_1142e30cd6f9f8da_1">
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">We
have 3845 routers with NM-HDV2 modules at each site to support local PRIs and
conferencing. We have PVDM-64 installed on the HDV2 modules. I am
setting up conferencing on the routers and I want to eliminate unnecessary codec
from the list of codecs supported. We use 7960 and 790x phones.
Callmanager is configured for calls over the WAN to be g.729 and we use g.711
internally to each office. A user at any site can envoke local
conference resource to conferenc PSTN calls, local phones and phones
located across the WAN.</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">I
can leave the following config but it wastes DSP resources:</span></font>
</p>
<p><font face="Courier New" size="2"><span style="font-size: 10pt;">dspfarm profile 1
conference</span></font> <br><font face="Courier New" size="2"><span style="font-size: 10pt;"> description office
Conference 1</span></font> <br><font face="Courier New" size="2"><span style="font-size: 10pt;"> codec
g711ulaw</span></font> <br><font face="Courier New" size="2"><span style="font-size: 10pt;"> codec
g729r8</span></font> <br><font face="Courier New" size="2"><span style="font-size: 10pt;"> codec
g711alaw</span></font> <br><font face="Courier New" size="2"><span style="font-size: 10pt;"> codec
g729ar8</span></font> <br><font face="Courier New" size="2"><span style="font-size: 10pt;"> codec
g729abr8</span></font> <br><font face="Courier New" size="2"><span style="font-size: 10pt;"> codec
g729br8</span></font> <br><font face="Courier New" size="2"><span style="font-size: 10pt;"> associate application
SCCP</span></font> <br><font face="Courier New" size="2"><span style="font-size: 10pt;"> maximum sessions
4</span></font> </p>
<p><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">What can I remove from the codec
list?</span></font> </p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Thanks,</span></font>
</p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Pete Ruttman</span></font>
</p>
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