PERFORMANCE EVALUATION OF VoIP SYSTEMS IN CLOUD COMPUTING

In the last decade, cloud computing and Voice over Internet Protocol (VoIP) technologies have been exceeding propagated. Whereas, the cloud computing technology is deployed in more than 60% of the companies around the world. On the other hand, VoIP technology generated more than 1872 petabyte of data in the year 2015. The conjunction of the two technologies, cloud computing and VoIP, has been implemented by a considerable number of the organisation. However, VoIP systems are facing numerous types of attack. In this paper, we are investigating the performance of VoIP technology over cloud computing, when protected against attack. Particularly, we will investigate the Session Initiation Protocol (SIP) VoIP protocol Registration Request Delay (RRD) in cloud computing with security layer protection. In order to achieve that, we have deployed SIP server on the cloud (Microsoft Azure's datacenter) with security layer protection. The implementation of SIP VoIP server on cloud computing showed that the RRD delay was increased when adding a security layer in comparison to the implantation without a security layer. Whereas, the increment of the RRD delay was between 29% and 42%, in the tested scenario. Therefore, protecting the SIP VoIP server on cloud computing with the security layer negatively impact the performance of the SIP VoIP server.