Improvement of implementation of ISO-IEC 20000 Edition 2 standard in IT systems of Telecom operator through comparison with ITIL V3 best practices

This paper presents the improvement of the implementation of ISO/IEC 20000 Edition 2 standard by comparison with the ITIL V3 set of best practices for implementing an IP multimedia subsystem of Telecom operator. In this paper implementation of IMS system has been done by using ISO/IEC 20000 Edition 2 recommendations and service lifecycle with its comparisons with ITIL V3 recommendations and service lifecycle. The aim of this paper is to present the improved service lifecycle of ISO/IEC 20000 Edition 2 standard through comparative analysis with ITIL V3 implementation of IMS system. Improved implementation of ISO/IEC 20000 Edition 2 standard will be shown in the form of new processes that are added to existing service lifecycle and are evaluated with Key Performance Indicators (KPIs), Key process activities and missing activities that will be singled out as a separate processes.