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<div class=Section1>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Try this command on your gateways if you don’t Have it<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<h2><span lang=EN-US style='font-size:11.0pt'>voice rtp send-recv <o:p></o:p></span></h2>
<p class=pb1body1><a name=wp1051363></a><span lang=EN-US style='font-size:11.0pt'>To
establish a two-way voice path when the Real-Time Transport Protocol (RTP)
channel is opened, use the <b>voice rtp send-recv command in </b>global
configuration mode. To reset to the default, use the <b>no</b> form of this
command. <o:p></o:p></span></p>
<p class=pcecmdenv><a name=wp1051364></a><b><span lang=EN-US style='font-size:
11.0pt'>voice rtp send-recv </span></b><span lang=EN-US style='font-size:11.0pt'><o:p></o:p></span></p>
<p class=pcecmdenv><a name=wp1051365></a><b><span lang=EN-US style='font-size:
11.0pt'>no voice rtp send-recv </span></b><span lang=EN-US style='font-size:
11.0pt'><o:p></o:p></span></p>
<h3><a name=wp1051366></a><span lang=EN-US style='font-size:11.0pt'>Syntax
Description <o:p></o:p></span></h3>
<p class=pb1body1><a name=wp1051367></a><span lang=EN-US style='font-size:11.0pt'>This
command has no arguments or keywords. <o:p></o:p></span></p>
<h3><a name=wp1051368></a><span lang=EN-US style='font-size:11.0pt'>Defaults <o:p></o:p></span></h3>
<p class=pb1body1><a name=wp1051369></a><span lang=EN-US style='font-size:11.0pt'>The
voice path is cut-through in only the backward direction when the RTP channel
is opened. <o:p></o:p></span></p>
<h2><a name=wp1051370></a><span lang=EN-US style='font-size:11.0pt'>Command
Modes <o:p></o:p></span></h2>
<p class=pb1body1><a name=wp1051371></a><span lang=EN-US style='font-size:11.0pt'>Global
configuration <o:p></o:p></span></p>
<h3><a name=wp1051393></a><span lang=EN-US style='font-size:11.0pt'>Command
History<o:p></o:p></span></h3>
<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 width="80%"
style='width:80.0%;border:outset gray 1.0pt' id=wp1051374table1051372>
<tr>
<td valign=bottom style='border:inset gray 1.0pt;padding:2.25pt 2.25pt 2.25pt 2.25pt'>
<p class=MsoNormal align=center style='text-align:center'><a name=wp1051374></a><b><span
style='font-size:11.0pt'>Release <o:p></o:p></span></b></p>
</td>
<td valign=bottom style='border:inset gray 1.0pt;padding:2.25pt 2.25pt 2.25pt 2.25pt'>
<p class=MsoNormal align=center style='text-align:center'><a name=wp1051376></a><b><span
style='font-size:11.0pt'>Modification <o:p></o:p></span></b></p>
</td>
</tr>
<tr>
<td valign=top style='border:inset gray 1.0pt;padding:2.25pt 2.25pt 2.25pt 2.25pt'>
<p class=pb1body1><a name=wp1051378></a><span style='font-size:11.0pt'>12.1(5)T
<o:p></o:p></span></p>
</td>
<td valign=top style='border:inset gray 1.0pt;padding:2.25pt 2.25pt 2.25pt 2.25pt'>
<p class=pb1body1><a name=wp1051380></a><span lang=EN-US style='font-size:
11.0pt'>This command was introduced on the Cisco 2600, Cisco 3600,
Cisco 7200, Cisco 7500, Cisco AS5300, Cisco AS5800, and
Cisco MC3810. <o:p></o:p></span></p>
</td>
</tr>
<tr>
<td valign=top style='border:inset gray 1.0pt;padding:2.25pt 2.25pt 2.25pt 2.25pt'>
<p class=pb1body1><a name=wp1051382></a><span style='font-size:11.0pt'>12.2(2)XA
<o:p></o:p></span></p>
</td>
<td valign=top style='border:inset gray 1.0pt;padding:2.25pt 2.25pt 2.25pt 2.25pt'>
<p class=pb1body1><a name=wp1051384></a><span lang=EN-US style='font-size:
11.0pt'>This command was implemented on the Cisco AS5350 and
Cisco AS5400. <o:p></o:p></span></p>
</td>
</tr>
<tr>
<td valign=top style='border:inset gray 1.0pt;padding:2.25pt 2.25pt 2.25pt 2.25pt'>
<p class=pb1body1><a name=wp1051386></a><span style='font-size:11.0pt'>12.2(2)XB1
<o:p></o:p></span></p>
</td>
<td valign=top style='border:inset gray 1.0pt;padding:2.25pt 2.25pt 2.25pt 2.25pt'>
<p class=pb1body1><a name=wp1051388></a><span lang=EN-US style='font-size:
11.0pt'>This command was implemented on the Cisco AS5850. <o:p></o:p></span></p>
</td>
</tr>
<tr>
<td valign=top style='border:inset gray 1.0pt;padding:2.25pt 2.25pt 2.25pt 2.25pt'>
<p class=pb1body1><a name=wp1051390></a><span style='font-size:11.0pt'>12.2(11)T
<o:p></o:p></span></p>
</td>
<td valign=top style='border:inset gray 1.0pt;padding:2.25pt 2.25pt 2.25pt 2.25pt'>
<p class=pb1body1><a name=wp1051392></a><span lang=EN-US style='font-size:
11.0pt'>This command was integrated into this release. <o:p></o:p></span></p>
</td>
</tr>
</table>
<p class=MsoNormal><span class=content><span lang=EN-US style='font-size:11.0pt'><o:p> </o:p></span></span></p>
<h3><a name=wp1051394></a><span lang=EN-US style='font-size:11.0pt'>Usage
Guidelines <o:p></o:p></span></h3>
<p class=pb1body1><a name=wp1051395></a><span lang=EN-US style='font-size:11.0pt'>This
command should be enabled only when the voice path must be cut-through
(established) in both the backward and forward directions before a Connect
message is received from the destination switch. This command affects all VoIP
calls when it is enabled. <o:p></o:p></span></p>
<h3><a name=wp1051396></a><span lang=EN-US style='font-size:11.0pt'>Examples <o:p></o:p></span></h3>
<p class=pb1body1><a name=wp1051397></a><span lang=EN-US style='font-size:11.0pt'>The
following example enables the voice path to cut-through in both directions when
the RTP channel is opened: <o:p></o:p></span></p>
<pre><a name=wp1051398></a><span style='font-size:11.0pt'>voice rtp send-recv<o:p></o:p></span></pre>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Jorge Rodríguez Aguila<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>CCNA,CCVP,CRMCS,CIPCES<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Senior Voice/Data Network Consultant<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Netxar Technologies<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>jorge.rodriguez@netxar.com<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Office 787-765-0058<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>PCS 787-688-8530<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><img width=101 height=34 id="Picture_x0020_1"
src="cid:image002.png@01C92AF5.DEDE8950" alt=netxar><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net]
<b>On Behalf Of </b>Djokic Sinisa<br>
<b>Sent:</b> Friday, October 10, 2008 2:12 AM<br>
<b>To:</b> 'cisco voip'<br>
<b>Subject:</b> [cisco-voip] CCM 4.1(3) audio delay !!!<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>hi
group..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>does
anybody has an idea what could be the cause of the following problem..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>we
have a CCM4.1(3) cluster with 2x 2851 as a h323 gateways..the phones are 7912,
7940, 7960 and 7970..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>the
problem is as follows..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>when
external caller makes a call to IP phone inside a CCM cluster the call comes
over PSTN and PRI..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>the
IP phone rings, somebody answers the phone..caller starts to talk
immedialtely..for first 2-3 seconds person on the IP phone cannot hear
anything, and after that interval everything is fine..no conversation is
lost..just for first 2-3 seconds it looks like conversation is delayed but not
lost, and afterwards everything is fine..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>in
opposite direction..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>when
IP phone makes a call to some external number over the PSTN and PRI..external
phone rings..somebody answers.. caller starts to talk immedialtely.. external
phone can hear a caller from IP phone side but have lost first 2-3 seconds of
conversation..afterwards everything is fine..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>ther
is no firewall between any of the devices, everything is clear..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>any
ideas?..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>thanx..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'>regards..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><strong><span lang=EN-US style='font-size:10.0pt;font-family:
"Verdana","sans-serif"'>Sinisa Djokic</span></strong><span lang=EN-US
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> </span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>System
Engineer</span><span lang=EN-US><br>
</span><span lang=EN-US style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>CCNP,CCDA,CQS-CWLDS,CS-CIPTDS,CS-CIPCCES
Cisco Certified</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> <o:p></o:p></span></p>
<table class=MsoNormalTable border=0 cellpadding=0>
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<p class=MsoNormal><img width=60 height=94 id="_x0000_i1025"
src="cid:image003.gif@01C92AF5.DEDE8950"><o:p></o:p></p>
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<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal> <o:p></o:p></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>MDS
Informaticki inzenjering</span><br>
<span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Bul.
Arsenija Carnojevica 170</span><br>
<span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>11070 Novi
Beograd, Serbia</span><br>
<span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Tel: +381 11
2015 200, 2015 273</span><br>
<span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Fax: +381 11
3194 954</span><br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif"'><a
href="http://www.mds.rs">www.mds.rs</a></span><br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif"'><a
href="mailto:sdjokic@mds.rs">sdjokic@mds.rs</a></span><o:p></o:p></p>
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