<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Verdana; font-size: 10pt; color: #000000'>You can connect clusters together via PSTN gateway, e.g. T1s or via IP, e.g. intercluster trunk.<br><br>I would investigate an intercluster trunk. Very easy to setup and you add it to a route group. If you have more than two clusters, you can still use an intercluster trunk, but then you have 6 trunks instead of two, basically fully meshed. Still manageable, but more than 3 you should consider a gatekeeper.<br><br>This page should help you out:<br><br>http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080094729.shtml<br><br><br>---<br>Lelio Fulgenzi, B.A.<br>Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<br>(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)<br>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br>"Bad grammar makes me [sic]" - Tshirt<br><br><br>----- Original Message -----<br>From: "Micah Bennett" <mbennett@als-xtn.com><br>To: cisco-voip@puck.nether.net<br>Sent: Wednesday, November 19, 2008 10:05:58 AM GMT -05:00 US/Canada Eastern<br>Subject: [cisco-voip] Connecting multiple clusters together<br><br>
<title>Connecting multiple clusters together</title>
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<p dir="ltr"><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial">Are there any documents or can anyone comment on what is needed and how you go about connecting multiple call manager clusters together. </font></span></p>
<p dir="ltr"><span lang="en-us"><font size="2" face="Arial">In the next few weeks and months I expect to be connecting to our new parent company.</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial"> I believe they are on CCM 3.x. We are on CCM 4.2(3).</font></span></p>
<p dir="ltr"><span lang="en-us"><font size="2" face="Arial">They are using IPCC 3.x and we are using IPCC 4.x. I know that they</font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">have</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial"></font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">two offices using CCM. I don</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial">’</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial">t know if its one cluster or two clusters. I believe it is just one.</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial"> I don</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial">’</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial">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. </font></span></p>
<p dir="ltr"><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"><font size="2" face="Arial">Here are some of the things I think I know. </font></span></p>
<p dir="ltr"><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"><font size="2" face="Arial">1. </font></span><span lang="en-us"></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">We are going to need some type of</font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">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. </font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">If there are two clusters we will need a connection to both.</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial"> Our network is using Sprints MPLS cloud. We should be able to drop connections from those two</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial"> new</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial"> offices directly into the</font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">MPLS</font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">cloud</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial"> that we are already connected to</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial">. </font></span></p>
<p dir="ltr"><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial"> </font></span></p>
<p dir="ltr"><span lang="en-us"><font size="2" face="Arial">2. </font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">Traffic between the locations will use G729 to get the best use out of the smallest connection.</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial"> We do this between our existing two locations.</font></span><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"><font size="2" face="Arial">3. </font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">If they are using</font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">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.</font></span><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial"> 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</font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">me.</font></span><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"><font size="2" face="Arial">4. </font></span><span lang="en-us"></span><span lang="en-us"> <font size="2" face="Arial">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.</font></span></p>
<p dir="ltr"><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"></span><span lang="en-us"><font size="2" face="Arial">Am I on track so far, or is this totally wrong?</font></span><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"><font size="2" face="Arial">Thanks in advance.</font></span><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"><b></b></span><span lang="en-us"><b></b></span><b><span lang="en-us"></span></b><a name=""><b><span lang="en-us"><font size="2" color="#000080" face="Arial">Micah Bennett</font></span></b></a><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"></span><span lang="en-us"></span><span lang="en-us"><font size="2" color="#000080" face="Arial">Telecommunications Admin</font></span><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"><b></b></span><span lang="en-us"><b></b></span><b><span lang="en-us"><font size="2" color="#800000" face="Arial">Automated License Systems</font></span></b><span lang="en-us"></span><span lang="en-us"></span></p>
<p dir="ltr"><span lang="en-us"></span></p>
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