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Many operators are deploying IP Multimedia Subsystem (IMS) as a way to address the increasing complexity of multimedia and multi-access services. IMS provides a standardized way to deploy a single core network that can be shared by many devices and applications. Over the past three years, Nortel has gained significant experience in performing Interoperability Testing (IOT) between the IMS Core and IMS application layer products. Nortel's "Battle-Hardened" methodology has been developed through successful interoperability testing of Nortel's Wireless Mobility Gateway 6000 and Application Server 5200 against IMS Cores from Alcatel-Lucent and Ericsson. Similarly, Nortel's IMS Core has been successfully tested with Application Servers from vendors such as Broadsoft, Sylantro and Ubiquity.
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