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<DIV>Hello,</DIV>
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<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>
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<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>
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<DIV>- SIP trunk between the two CUCM with "media termination point required" set to true ?</DIV>
<DIV>- H323 Intercluster trunk ?</DIV>
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<DIV>or do we need an ISR with cube to do this ?</DIV>
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<DIV>thank you for your advice...</DIV>
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<DIV>kind regards</DIV>
<DIV>Michael</DIV>
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