Beyond voip protocols understanding voice technology and networking techniques for ip telephony olivier hersent is chairman and cto of netcentrex france market leader in voip deployments in europe jean pierre petit is head of voice technology at france telecom. Drawing on extensive research and practical deployment experience in voip the authors provide essential advice for those seeking to design and implement a post bubble voip network beyond voip protocols understanding voice technology and networking techniques for ip telephony. Beyond voip protocols understanding voice technology and networking techniques for ip telephony. Drawing on extensive research and practical deployment experience in voip the authors provide essential advice for those seeking to design and implement a post bubble voip network beyond voip protocols understanding voice technology and networking techniques for ip telephony introduces the basics of speech coding and voice quality. Beyond voip protocols understanding voice technology and networking techniques for ip telephony introduces the basics of speech coding and voice quality demonstrates how quality of service may be built into the network and deals with dimensioning aspects eg multipoint communications and how to model call seizures