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<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cisco “Relaxed” from 40 to 80 on 6.1<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=pbu1bullet1><span lang=EN-US>•</span><img width=19 height=2
id="_x0000_i1026" src="cid:image001.png@01C885F2.E494DC80"
alt="http://www.cisco.com/en/US/partner/i/templates/blank.gif"><span
lang=EN-US>Delay <o:p></o:p></span></p>
<p class=pb2body2><a name=wp1059906></a><span lang=EN-US>The maximum one-way
delay between any two Unified CM 6.0 servers should not exceed
20 msec, or 40 msec round-trip time (RTT). <b>Beginning with Cisco
Unified CM Release 6.1, the maximum one-way delay between two
Unified CM servers can be up to 40 msec, or 80 msec round-trip
time. Measuring the delay is covered in </b></span><b><a
href="http://www.cisco.com/en/US/partner/docs/voice_ip_comm/cucm/srnd/6x/models.html#wp1044078"><span
lang=EN-US>Delay Testing</span></a></b><span lang=EN-US>. Propagation delay
between two sites introduces 6 microseconds per kilometer without any
other network delays being considered. This equates to a theoretical maximum
distance of approximately 3000 km for 20 ms delay or approximately
1860 miles. These distances are provided only as relative guidelines and
in reality will be shorter due to other delay incurred within the network. <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'>Jorge Rodríguez Aguila<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'>CCNA,CCVP<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 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>
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color:#1F497D'><img border=0 width=101 height=34 id="Picture_x0020_1"
src="cid:image002.png@01C885F2.E494DC80" 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>
<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>
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<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>Grisham, Tom<br>
<b>Sent:</b> Friday, March 14, 2008 4:22 PM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] Question: What version of CUCM extends the RTT
window for Wan clustering subscribers.<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Can
anyone share in which version of CUCM that the RTT boundaries will be
"relaxed" or "extended" between subscribers clustered over
the WAN. It is my understanding that the 40ms boundary was to be adjusted
somewhere in the 6.x or 6.1 Linux platforms.</span><o:p></o:p></p>
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