Internet Telephony

Internet Telephony : Call Processing Protocols

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A follow-up to Uyless Black's best-selling Voice Over IP, this book focuses on critical Internet call processing protocols -- giving professionals all the background they need to successfully implement voice, data, fax, and even videoconferencing across the Internet. In Internet Telephony: Call Processing Protocols, Uyless Black introduces each key IETF and ITU standard for Internet call processing, helping communications professionals resolve conflicts and achieve maximum interoperability. The book begins with a basic tutorial on telephony call processing and the differences between call processing on traditional circuit-switched telephone networks vs. packet-based networks such as the Internet. The book includes extensive coverage of the ITU H.323 standard for transmission of mixed-media signals such as videoconferencing sessions; the IETF/ITU Megaco Protocol for improving device interoperability and acoustic performance; and IETF's Session Initiation Protocol for IP teleconferencing. Black demonstrates how to build special services such as call waiting into IP networks; and an in-depth introduction into telephony traffic routing using the new Telephony Routing over IP (TRTP) more

Product details

  • Hardback | 400 pages
  • 183.6 x 242.6 x 31.5mm | 1,045.05g
  • Pearson Education Limited
  • Prentice-Hall
  • Harlow, United Kingdom
  • English
  • 0130255653
  • 9780130255655

Table of contents

(NOTE: EACH CHAPTER CONCLUDES WITH A SUMMARY.) 1. Introduction. Introduction. Movement to Packet-based Networks and Internet Architectures. The Growth Segment: Data Networks. Why IP Call Processing? Savings thus Far in Internet Telephony? Beyond Internet Telephony. What is Call Processing? Emergence of IP-based Media Gateways and Gateway Controllers. Concept of a Calling Domain. The Principal IP Call Processing Protocols. The Mier Survey. A Look at the Internet Telephony Industry. 2. The Telephone Network. Introduction. Goals of a Telephone System. The Telephone Plant. The Media to the Customer. A More Detailed Look at the Outside Plant. Offices and Trunks. The Telephone Dialing Plan. Basics of Telephony Call Processing. Example of a Call. Multifrequency (MF) Signals. DTMF Signaling. Other Tones and Events on the Subscriber Line. Examples of Call Processing Operations. ISDN. SS7. 3. The Internet. Introduction. The Protocol Suite. Names and Addresses. A Brief Look at IP. A Brief Look at TCP and UDP. The Domain Name System (DNS). The DNS Root Servers. HTTP, HTML. 4. The Internet Call Processing Model. Introduction. The Gateway/Gatekeeper/Media Gateway Controller Model. A Unified View. The Signaling Gateway in More Detail. The Internet Layered Model and the Internet Call Processing Model. 5. Session Description Protocol (SDP). Introduction. SDP Functions. Attributes. Text-based vs. Binary Encoding. SDP Descriptions. SDP Lines of Text. The SDP Information. Examples of SDP Coding. 6. Multicasting. Introduction. Multicasting Concepts. Multicasting Addresses. IGMP and IP. The IGMP Message. IGMP Operations. Relationships of Multicasting and Unicasting Addresses. Multicasting Tables. IGMP State Diagrams. IGMP Timers. Options for Multicast Addresses in a Session Description. Small Group Multicast (SGM). 7. The Real Time Protocol (RTP). Introduction. Attributes of the Real Time Protocol (RTP). The Real Time Control Protocol (RTCP). Translation and Mixing. The RTP Message. RTP Profiles for Audio and Video Conferences (RFC 1890). Sample-Based and Frame-Based Encodings. RTP Payload for Telephony Traffic. RTP Payload for H.263 Video. Appendix 7A References for RTP Payload Types. Appendix 7B Other References on Current RTP Activity. 8. H.323. Introduction. Design Intent of H.323. H.323 Architecture. Zones. The H.323 Protocol Stack. Relationship to Megaco and MGCP. The Multipoint Control Unit (MCU). The Major Operations. The H.323 Message Coding Conventions. Gatekeeper Discovery. Registration Procedures. Admission Procedures. Gatekeeper Routed Call Signaling. Direct Endpoint Call Signaling. Other Gatekeeper Routed Call Operations. Endpoints Registered to Different Gateways. Multipoint Conferences. Other RAS Procedures. Major H.245 Services. Bandwidth Change Request. Conference Creation Operation. The T.120 Specifications. Extensibility. Other Thoughts. 9. MGCP. Introduction. MGCP Concepts. The Call Agent. MGCP Gateway Components. Events and Packages. The Ten Packages. Endpoints. Connection States. Local Directives and Session Descriptions. MGCP Modes. The Applications Programming Interface (API). Rules on Connection Identifiers. The Message Parameters. The MGCP Message Format. Security Services. Example of MGCP Protocol Exchanges. 10. Megaco. Introduction. Status of Megaco. Structure of Megaco. The Megaco Connection Model. Megaco Packages in More Detail. Megaco Commands. Megaco Names. The Application Programming Interface (API). Examples of Megaco Protocol Exchanges. Megaco IP Phone Media Gateway. The Megaco MIB. Security Services. 11. The Session Initiation Protocol (SIP). Introduction. SIP Features. The Five Major Features of SIP. Protocol Placement of SIP. Clarification of Terms. SIP Status Codes. Example of a Request/Response Operation. The SIP Methods. SIP's Use of Internet Resources. SIP Message Coding Conventions. The Via Operation. SIP Headers. Structure for SIP Message. Examples of SIP Message Exchanges. Potential Problems with SIP. Appendix 11A SIP Use of the Augmented Backus-Naur Form Notations. 12. Interworking Internets and Telephone Networks. Introduction. Internetworking SS7 and the Internet. SS7 and IP Components. The Integration of the Telephone and Internet Service Providers. The IP/SS7 Internetworking Model (RFC 2719). Layered Protocols for SS7 and IP Signaling. H.323 and SS7. SIP and SS7. H.323 and SIP. SIP and IN. APPENDIX A: IP Call Processing and QOS. APPENDIX B: ISDN and SS7. APPENDIX C: INs and AINs. APPENDIX D: RFC 822. APPENDIX E: RFC 2234. GLOSSARY. REFERENCES. more

About Uyless N. Black

Uyless Black is a widely known and respected consultant and lecturer on computer networks and data communications. He is author of all the books in his Prentice Hall Series in Advanced Communications Technologies, including Voice Over IP, ATM: Foundations for Broadband Networks, and IP Routing Protocols. He resides in the Shenandoah Valley of more

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