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<p class=MsoNormal><span style='color:#1F497D'>I am not sure, but you may try
to use a 3<sup>rd</sup> party SIP proxy server (SER, OpenSER) configured in a
kind of load balancer mode and put in between your OCS and CCM cluster.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>All the best,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> Jozef Janitor<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
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>Brian Van Benschoten<br>
<b>Sent:</b> Tuesday, November 06, 2007 5:38 PM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] SIP trunk - how to make it redundant - CM6 to OCS
2007<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I’m setting up a SIP trunk between CM6.01a and our OCS
2007 environment.<o:p></o:p></p>
<p class=MsoNormal>My question is how do you configure redundancy in this
setup.<o:p></o:p></p>
<p class=MsoNormal>I have a publisher and subscriber in my cluster, but the OCS
side wants to build a SIP trunk to a SINGLE ip address.<o:p></o:p></p>
<p class=MsoNormal>If I build the SIP trunk between the CM subscriber and the
OCS box and the subscriber goes down, is my SIP trunk gone ?<o:p></o:p></p>
<p class=MsoNormal>My publisher would still be up, the SIP trunk would register
with the publisher but now the IP address of its endpoint would be the
publisher and OCS most likely wouldn’t like that.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I think this issue exists with any type of SIP trunk on call
manger. To CUPS or a 3<sup>rd</sup> pary PBX too.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Any ideas how to work thru this?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>________________________________________<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>Brian Van Benschoten <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>Practice Leader - Unified
Communications<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>Consulting Engineer - CCIE # 5421<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>Inacom Information Systems<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>3001 West Beltline Highway<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>Madison, WI 53713 USA<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>608-661-7780 (IP Phone)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>608-661-7701 (FAX)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>608-661-7777 (Customer Service)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>brian.vanbenschoten@inacom.com<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'><a href="http://www.inacom.com/"><span
style='color:black'>http://www.inacom.com</span></a><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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