Putting VoIP to Work. Softswitch Network Design and Testing (Relié)

This is a complete, in-depth technical guide to the challenges associated with building and deploying Voice over IP (VoIP) networks using softswitch technologies - and today's best solutions. Bill Douskalis, author of the best-selling IP Telephony, reviews the entire current state of the art in protocols for signaling, media transport, and network engineering - and presents expert guidance on designing telephony solutions that meet the needs of both carriers and customers. Coverage includes: New scenarios for design of VoIP networks based on Class 4 and Class 5 softswitch network technology; Designing for performance and interoperability: challenges, examples, and comparisons of potential solutions; Protocols of the new converged networks and design requirements for seamless integration of softswitch applications with the PSTN; Call flows for SIP, H.323, MGCP, and Megaco; Testing tips to ensure consistently high QoS in voiceband applications; MPLS and IP Differentiated Services in VoIP networks: key roles and integration issues. Nobody has more experience implementing VoIP in large-scale networks than Bill Douskalis does - and no book offers more insight for real-world VoIP design, construction, and deployment.