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This collaborative project, developing a testbed that enables research on understanding and analysis of vulnerabilities of Voice over IP (VoIP), investigates issues related to Quality of Service (QoS) in VoIP, taking into account possible attacks, identity management, spamming, Denial of Service (DoS) attacks, 911 emergency management, and high availability. Research results will be translated to engineering guidelines for preventing security breaches during development and deployment of VoIP networks.

This research addresses a potentially serious vulnerability in next generation voice communications: the risk that Internet-style spam messages may propagate into the voice telephone network. The proposed methodology uses a combination of trust, reputation and presence functions for filtering incoming calls in a Voice over Internet Protocol (VoIP) network. The research incorporates user feedback via a 'spam' button on the IP phone.

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