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<title>Connecting multiple clusters together</title>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Inter-cluster
trunk<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Mike
Wilusz, CCNA<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Networking
Systems Programmer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Price
Chopper Supermarkets / The Golub Corporation<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> <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>Micah Bennett<br>
<b>Sent:</b> Wednesday, November 19, 2008 10:14 AM<br>
<b>To:</b> Ryan Ratliff; cisco-voip@puck.nether.net<br>
<b>Subject:</b> Re: [cisco-voip] Connecting multiple clusters together<o:p></o:p></span></p>
</div>
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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";
color:navy'>Ryan<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Thanks for the info. I am not familiar with all the
acronyms. Can you tell me what ICT means.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<p><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Micah Bennett</span></b><span style='color:navy'> <br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Telecommunications Admin</span><span style='color:navy'> <br>
</span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:maroon'>Automated License Systems</span></b><span style='color:navy'> <br>
</span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:maroon'>3055 Lebanon Rd, Ste 2301</span></b><span style='color:navy'> <br>
</span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:maroon'>Nashville, TN 37214</span></b><span style='color:navy'> <br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Extension: 2357</span><span style='color:navy'> <br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Office: 615-263-4066</span><span style='color:navy'> <br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Mobile: 615-207-0318</span><span style='color:navy'> <br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Email: </span><span style='color:navy'><a
href="mailto:micah.bennett@als-xtn.com"><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>micah.bennett@als-xtn.com</span></a> <br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Website: </span><span style='color:navy'><a
href="http://www.als-xtn.com"><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>www.als-xtn.com</span></a>
</span><o:p></o:p></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"'> Ryan Ratliff
[mailto:rratliff@cisco.com] <br>
<b>Sent:</b> Wednesday, November 19, 2008 9:10 AM<br>
<b>To:</b> Micah Bennett; cisco-voip@puck.nether.net<br>
<b>Subject:</b> RE: [cisco-voip] Connecting multiple clusters together</span><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Sans","sans-serif";
color:blue'>Looks like you've got the basics down. If the connection
between offices is data then just create an ICT pointing to the servers in the
other cluster (and do the same on their side) and use a route pattern
to route calls via the ICT. Make sure the IP routing works to
their servers and from their voice vlan to yours and you'll be good to
go. For QOS between them ICT calls are just like H.323.</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p><span style='font-size:10.0pt'>-Ryan </span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><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>Micah Bennett<br>
<b>Sent:</b> Wednesday, November 19, 2008 10:06 AM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] Connecting multiple clusters together</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Are there
any documents or can anyone comment on what is needed and how you go about
connecting multiple call manager clusters together. </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>In the next
few weeks and months I expect to be connecting to our new parent company.
I believe they are on CCM 3.x. We are on CCM 4.2(3).</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>They are
using IPCC 3.x and we are using IPCC 4.x. I know that they</span> <span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>have</span> <span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>two offices using
CCM. I don’t know if its one cluster or two clusters. I believe it
is just one. I don’t know of any plans or need to integrate the IPCC
portions at this time, but I do believe we want to establish office to office
extension dialing as soon as possible. </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Here are
some of the things I think I know. </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>1. </span>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>We are going to
need some type of</span> <span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>connection
to them. I assume this would be a T1 at minimum. If it is one
cluster, we should only need one to the main location. </span> <span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>If there are two
clusters we will need a connection to both. Our network is using Sprints
MPLS cloud. We should be able to drop connections from those two new
offices directly into the</span> <span style='font-size:10.0pt;font-family:
"Arial","sans-serif"'>MPLS</span> <span style='font-size:10.0pt;font-family:
"Arial","sans-serif"'>cloud that we are already connected to. </span><o:p></o:p></p>
<p> <o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>2. </span>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Traffic between
the locations will use G729 to get the best use out of the smallest
connection. We do this between our existing two locations.</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>3. </span>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>If they are
using</span> <span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>extension
ranges that conflict with our existing ranges, each office will need to do some
type of translation to avoid someone having to change extension ranges.
For example if they have an ext 2352 and we have an ext 2352, we will need to
assign a leading digit to each office. I might dial 6(2352) to get to
them and they would dial (7)2352 to get to</span> <span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>me.</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>4. </span>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Instead of
routing calls to those offices extensions out to the PSTN, I would route them
across the connection to the other offices and they would have routing set up
to accept the digits I sent, and convert them back to the proper extension for
routing the call to the correct location.</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Am I on
track so far, or is this totally wrong?</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks in
advance.</span><o:p></o:p></p>
<p><a name=""><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Micah Bennett</span></b></a><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Telecommunications
Admin</span><o:p></o:p></p>
<p><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:maroon'>Automated License Systems</span></b><o:p></o:p></p>
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