This work is a new edition of a text on Internet telephony technology. Voice over IP (VoIP) is a focus of service and product development for the networking, telephony, and broadcast industries. Cisco Systems in particular has accelerated the market by releasing a suite of VoIP products, voice-enabling its servers and switches, and undertaking an impressive public education program This 2nd edition has been significantly revised and contains in-depth coverage of key issues such as: network architectures to support VoIP, performance and voice quality considerations, compression and integration methods for IP transmissions and servers and supporting hardware. Expanded coverage now includes: advances in signalling protocols (SIP, H.323, MEGACO), second-generation switching and the development of non-switched alternatives, implementation lessons learned and Cisco modules.
Table of Contents
PREFACE.ACKNOWLEDGMENT.ABOUT THE AUTHORS.Chapter 1: Introduction and Motivation.1.1 INTRODUCTION.1.2 DRIVERS FOR VOICE OVER IP.1.3 APPROACHES FOR IP-BASED VOICE SYSTEMS.1.4 THE FUTURE.REFERENCES.Chapter 2: An Overview of IP, IPOATM, MPLS, and RTP.2.1 INTRODUCTION.2.2 INTERNET PROTOCOL.2.3 IP OVER ATM (IPOATM).2.4 BASIC SYNOPSIS OF MPLS.2.5 REAL-TIME TRANSPORT PROTOCOL (RTP).2.6 RTP CONTROL PROTOCOL (RTCP).2.7 STREAM CONTROL TRANSMISSION PROTOCOL (SCTP).2.8 ATM QOS MECHANISMS.REFERENCES.NOTES.Chapter 3: Issues in Packet Voice Communication.3.1 INTRODUCTION.3.2 TRAFFIC MODELS.3.3 PERFORMANCE CRITERIA.3.4 LINK MODEL.3.5 RESULTS.3.6 CONCLUSION.REFERENCES.Chapter 4: Voice Technologies for Packet-Based Voice Applications.4.1 INTRODUCTION.4.2 G.727: ADPCM FOR PACKET NETWORK APPLICATIONS.4.3 EXAMPLE OF APPLICATION.REFERENCES.NOTES.Chapter 5: Technology and Standards for Low-Bit-Rate Vocoding Methods.5.1 INTRODUCTION.5.2 INTRODUCTION TO G.729 AND G.7184.108.40.206 G.7220.127.116.11 G.728.5.5 G.729.5.6 EXAMPLE OF APPLICATIONS.REFERENCES.NOTES.Chapter 6: Voice over IP and the Internet.6.1 INTRODUCTION.6.2 IP/INTERNET BACKGROUND.6.3 VOICE TRANSMISSION AND APPROACHES IN ATM, FRAME RELAY, AND IP.6.4 QOS PROBLEMS AND SOLUTIONS.6.5 PROTOCOLS FOR QOS SUPPORT FOR AUDIO AND VIDEO APPLICATIONS.6.6 INTERNET TELEPHONY SERVERS (ITSS).6.7 THE VOICE OVER IP/INTERNET MARKET.6.8 VOIP REGULATORY ISSUES.6.9 CONCLUSION.REFERENCES.NOTES.Chapter 7: Signaling Approaches.7.1 INTRODUCTION.7.2 SIGNALING IN CIRCUIT-SWITCHED NETWORKS.7.3 H.323 STANDARDS.7.4 MGCP.7.5 SIP.7.6 OTHER IETF SIGNALING EFFORTS.7.7 MEGACO.7.8 SIGTRAN PROTOCOLS.7.9 SCTP.REFERENCES.NOTES.Chapter 8: Quality of Service.8.1 INTRODUCTION.8.2 BACKGROUND.8.3 QOS APPROACHES.8.4 QOS DETAILS.8.5 CASE STUDY.REFERENCES.NOTES.Chapter 9: Voice over MPLS and Voice over IP over MPLS.9.1 INTRODUCTION AND BACKGROUND.9.2 MOTIVATIONS.9.3 BASIC MPLS FEATURES.9.4 QOS CAPABILITIES.9.5 VOICE APPLICATIONS.REFERENCES.NOTES.Chapter 10: Telephone Number Mapping (ENUM).10.1 INTRODUCTION.10.2 BACKGROUND.10.3 INTRODUCTION TO ENUM.10.4 SUMMARY OF CAPABILITIES AND ISSUES.10.5 NUMBER PORTABILITY.10.6 E.164 NUMBERS AND DNS.10.7 APPENDIX TO THE RFC 2916 SCENARIO.REFERENCES.NOTES.Chapter 11: Carrier Applications.11.1 INTRODUCTION AND OPPORTUNITIES.11.2 WHERE THE ACTION SHOULD BE.11.3 CARRIER VOICE NETWORKS.11.4 DEPLOYMENT AND ISSUES.11.5 ENTERPRISE APPLICATIONS.11.6 INTERNATIONAL OPPORTUNITIES.11.7 EQUIPMENT/VENDOR TRENDS.REFERENCES.NOTES.INDEX.
DANIEL MINOLI is Managing Director for Econsultex, Inc., and has twenty-six years of corporate experience working with enterprise communication technologies such as packet voice, frame relay, IP, Internet, and wireless. Most recently, he was founder or cofounder of a number of high-tech companies including InfoPort Communications Group, an optical and gigabit ethernet metro carrier. A pioneer in the field, Minoli's research into voice over data began in 1975, and he has worked on several major implementations. EMMA MINOLI is founder and Managing Director of Red Hill Consulting, a high-tech consultancy specializing in the area of VoIP, multimedia, Web, and e-commerce technologies.