A complete and systematic treatment of signal processing for VoIP voice and fax This book presents a consolidated view and basic approach to signal processing for VoIP voice and fax solutions. It provides readers with complete coverage of the topic, from how things work in voice and fax modules, to signal processing aspects, implementation, and testing. Beginning with an overview of VoIP infrastructure, interfaces, and signals, the book systematically covers:   Voice compression   Packet loss concealment techniques   DTMF detection, generation, and rejection   Wideband voice modules operation   VoIP Voice-Network bit rate calculations   VoIP voice testing   Fax over IP and modem over IP   Country deviations of PSTN mapped to VoIP   VoIP on different processors and architectures   Generic VAD-CNG for waveform codecs   Echo cancellation   Caller ID features in VoIP   Packetization—RTP, RTCP, and jitter buffer   Clock sources for VoIP applications   Fax operation on PSTN, modulations, and fax messages   Fax over…