<div dir="ltr">SIP Trunk is the way to go these days especially with 9.x/10.x. With SIP inspection opening UDP pinholes, you may be able to get around the MTP Required. I try to get rid of MTPs unless absolutely necessary.</div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 9, 2015 at 5:08 PM, Michael Hamann <span dir="ltr"><<a href="mailto:mail@mhamann.net" target="_blank">mail@mhamann.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div>Hello,</div>
<div> </div>
<div>we support a company with severel sub organisations. We have a large CUCM cluster (Ver 9.1), which provided telephony for most of the users. Now one unit is building up a seperate smal CUCM (Ver 10.x). Both units networks are seperated through a firewall, no overlapping subnets. The firewall is supported by us, so we could add additional firewall rules..</div>
<div> </div>
<div>Call between these units should be routed via IP and not via a back-to-back ISDN gateway. What would be the best and easiest way to configure this ?</div>
<div> </div>
<div>- SIP trunk between the two CUCM with "media termination point required" set to true ?</div>
<div>- H323 Intercluster trunk ?</div>
<div> </div>
<div>or do we need an ISR with cube to do this ?</div>
<div> </div>
<div>thank you for your advice...</div>
<div> </div>
<div>kind regards</div><span class="HOEnZb"><font color="#888888">
<div>Michael</div>
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