Voice Over Internet Protocol
A technology that allows telephone calls to be made over a LAN or the Internet itself. Skype is a well-known example. VoIP poses the same risk as network-connected PBX systems but also poses the additional risk of data interception when such data travel over an unsecured connection. VoIP functionality should be encrypted where possible and equipment monitored with intrusion-detection systems.
Reference(s) in IAPP Certification Textbooks: F88; US100