IP Telephony : Deploying Voice-over-IP Protocols
Olivier. Hersent
Bok Engelsk 2005 · Electronic books.
| Utgitt | Chichester : : Wiley, , 2005.
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| Omfang | 1 online resource (418 p.)
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| Opplysninger | Description based upon print version of record.. - IP Telephony Deploying Voice-over-IP Protocols; Contents; Abbreviations; Glossary; Preface; 1 Voice over Packet; 1.1 Transporting voice, fax, and video over a packet network; 1.1.1 A Darwinian view of voice transport; 1.1.2 Voice and video over IP with RTP and RTCP; 1.2 Encoding media streams; 1.2.1 Codecs; 1.2.2 DTMF; 1.2.3 Fax; 2 H.323: Packet-based Multimedia Communications Systems; 2.1 Introduction; 2.1.1 Understanding H.323; 2.1.2 Development of the standard; 2.1.3 Relation between H.323 and H.245 versions, H.323 annexes, and related specifications; 2.1.4 Where to find the documentation. - 2.2 H.323 step by step2.2.1 The 'hello world case': simple voice call from terminal A to terminal B; 2.2.2 A more complex case: calling a public phone from the Internet, using a gatekeeper; 2.2.3 The gatekeeper-routed model; 2.2.4 H.323 calls across multiple zones or administrative domains; 2.3 Optimizing and enhancing H.323; 2.3.1 Issues in H.323v1; 2.3.2 The 'early H.245' procedure; 2.3.3 The 'fast-connect' procedure; 2.3.4 H.245 tunneling; 2.3.5 Reverting to normal operation; 2.3.6 Using RAS properly and only when required; 2.4 Conferencing with H.323. - 2.4.1 The MCU conference bridge, MC and MP subsystems2.4.2 Creating or joining a conference; 2.4.3 H.332; 2.5 Directories and numbering; 2.5.1 Introduction; 2.5.2 Contacting an email alias with H.323 and the DNS; 2.5.3 E164 numbers and IP telephony; 2.6 H.323 security; 2.6.1 Typical deployment cases; 2.6.2 H.235; 2.7 Supplementary services; 2.7.1 Supplementary services using H.450; 2.7.2 Proper use of H.450 supplementary services, future directions for implementation of supplementary services; 2.8 Future work on H.323; 3 The Session Initiation Protocol (SIP); 3.1 The origin and purpose of SIP. - 3.2 From RFC 2543 to RFC 32613.3 Overview of a simple SIP call; 3.3.1 Basic call scenario; 3.3.2 Syntax of SIP messages; 3.4 Call-handling services with SIP; 3.4.1 Location and registration; 3.4.2 The proxy function; 3.4.3 Multiparty conferencing; 3.4.4 Configuring network-based call handling; 3.5 Instant messaging and presence; 3.5.1 Common Profile for Instant Messaging (CPIM); 3.5.2 RFC 3265, 'Specific Event Notification'; 3.5.3 RFC 3428, 'SIP Extensions for Instant Messaging'; 3.6 SIP security; 3.6.1 Media security; 3.6.2 Message exchange security; 3.7 SIP and H.323. - 3.7.1 Arguments in favor of SIP3.7.2 Arguments in favor of H.323; 3.7.3 H.323 to SIP gateways; 3.7.4 Conclusion on the future of SIP, and its relation with H.323; 4 The Media Gateway to Media Controller Protocol (MGCP); 4.1 Introduction: why MGCP?; 4.1.1 Stimulus protocols; 4.1.2 Decomposed gateways; 4.1.3 Some history; 4.2 MGCP 1.0; 4.2.1 The MGCP connection model; 4.2.2 The protocol; 4.2.3 Handling of fax; 4.2.4 Extensions for phone user interface control; 4.3 Sample MGCP call flows; 4.3.1 Call set-up; 4.3.2 DTMF tones; 4.3.3 Call release; 4.4 The future of MGCP. - 5 Advanced Topics: Call Redirection. - IP (internet protocol) Telephony, enabled by softswitches, is going to usher in a new era in telecommunications. By putting voice and data over one IP network, operators can enjoy lower costs and create new, revenue-generating ""multimedia"" services. This valuable reference offers a comprehensive overview of the technology behind IP telephony and offers essential information to network engineers, designers and managers who need to understand the protocols and explore the issues involved in migrating the existing telephony infrastructure to an IP-based real time communication service.
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| Emner | |
| Sjanger | |
| Dewey | |
| ISBN | 0470023597. - 9780470023594
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