What Is VoIP?Real-time Versus Nonreal-time DataWhy Change to VoIP?The Business CaseVoIP and FCC Regulation911A Note on PowerGeneral VoIP TopologiesPower over EthernetPoE Basic OperationVoIP ProtocolsSignaling ProtocolsSession Initiation ProtocolH.323Skinny Client Control ProtocolTransport ProtocolVoIP Basic OperationPerformanceUnified CommunicationsSummaryStandards and ReadingReview QuestionsReview Question AnswersLab ActivitiesActivity 1—Review of the StandardsActivity 2—Download Wireshark and the Capture Files for This ChapterActivity 3—Examine VoIP Offerings in Your AreaActivity 4—Take a Look at the FCC WebsiteActivity 5—Latency, Packet Loss, and Jitter