Nokia Siemens Networks (NSN) has carried out tests to verify end-to-end Voice over LTE (VoLTE) deployment readiness in a Telco Cloud ahead of commercial deployment of the company's cloud technology. The tests followed on from NSN's demonstration of the reliability of core virtualisation in several proof of concept projects in 2012. In its latest tests, NSN tackled current deployment barriers by implementing end-to-end verification of VoLTE call cases to ensure feature parity with operators' current 2G/3G circuit-switched voice services, single radio voice call continuity (SRVCC) functionality, and the reuse of existing billing, lawful interception and intelligent network interfaces.
The equipment maker used an industry standard virtualisation and cloud management infrastructure as well as commercial off-the-shelf IT server hardware to demonstrate the automated deployment and elastic scaling of virtualised network elements, live migration of virtual machines from one server to another, and the recovery from hardware failures. All cloud test cases were enabled and supported by the existing NSN operations support systems (OSS) portfolio and a cloud application management system which controls the VoLTE core applications in an operator's private Telco Cloud.
NSN worked closely with major operators and technology partners to define the use cases of the test and verification programme in order to ensure robustness and carrier-grade availability of real-time mobile core applications deployed in a Telco Cloud data centre.
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