Chapter 10. Audio CODECs

Part III of this book covered PacketCable call signaling in detail. Specifically, Media Gateway Control Protocol (MGCP) and its PacketCable variants Network-based Call Signaling (NCS) and Trunk Gateway Control Protocol (TGCP), as well as the PacketCable Session Initiation Protocol (SIP) variant (Call Management Server Signaling [CMSS]) were examined. Now you will learn more about the technologies related to the bearer portion of PacketCable calls. You will gain a solid understanding of how analog voice is transmitted across the digital PacketCable network. This involves the analysis of different types of CODECs that convert between analog voice streams and the digital IP packets used in PacketCable. Factors that can adversely ...

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