Abstract: “VoIP systems is the new voice communication technology and is playing a key role in various sectors (Government, business, education etc) for the development of a country. Unfortunately, industry and academic researchers find difficulties to evaluate existing systems with focus on security to countermeasure the various attacks for either implementation in a real operator or future enhancement. This paper aims at enhancing the set of evaluation criteria presented in our last work by introducing metrics in a similar way done in software engineering. The V-Model is used to extract data. At the end, a metrics mechanism is developed together with the computation of each metric.”

Keywords: Evaluation Criteria, IDS, Metrics, SIP, VoIP Systems