SIP appears to be a powerful and useful signaling protocol supporting mobility for wireless IP networks but it has inherent weaknesses and dangers. This paper is a study on the security and disruption time (Delay) of SIP and SIP signaling in wireless networks and services. We studied quality of service in different network and compared it with the wireless network. In this paper we discuss some security issues and mechanisms and what limitations the security mechanisms has. From a security perspective, we introduce the [5]designed Multi-Layer security mechanism and how they think it will solve some major security issues in SIP and wireless networks. For disruption time, we specifically looked at the VoIP time. [3] tested and compared the disruption time for MIP and SIP, which we show in the paper with the results they found.
Elthea T. Lakay, Johnson I. Agbinya