How do you integrate the dial engine into an existing network that runs an earlier version of Cisco Unified Communications Manager and does not have native SIP trunk support?
A. This integration can be accomplished by using a Cisco IOS router that runs Cisco Unified Communications Manager Express as the SIP provider and configuring an H.323 Intercluster Trunk (ICT) between the Cisco Unified Communications Manager and the SIP provider. For detailed information, see Chapter 8, “Configuring and Managing the Cisco IPICS Policy Engine,”and the Solution Reference Network Design (SRND) Guide for Cisco IPICS, Release 2.1(1).
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