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VoIP and unified communications : internet telephony and the future voice network

Author: William A Flanagan
Publisher: Hoboken, N.J. : Wiley, ©2012.
Edition/Format:   eBook : Document : EnglishView all editions and formats
Summary:
Translates technical jargon into practical business communications solutions This book takes readers from traditional voice, fax, video, and data services delivered via separate platforms to a single, unified platform delivering all of these services seamlessly via the Internet. With its clear, jargon-free explanations, the author enables all readers to better understand and assess the growing number of voice over  Read more...
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Genre/Form: Electronic books
Additional Physical Format: Print version:
Flanagan, William A.
VoIP and unified communications.
Hoboken, N.J. : Wiley, ©2012
(DLC) 2011028943
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: William A Flanagan
ISBN: 9781118166048 1118166043 9781118166031 1118166035 1118019210 9781118019214 1118166019 9781118166017
OCLC Number: 787845504
Description: 1 online resource (xv, 298 pages) : illustrations
Contents: VoIP and Unified Communications: Internet Telephony and the Future Voice Network; Contents; Preface; Acknowledgments; 1: IP Technology Disrupts Voice Telephony; 1.1: Introduction to the Public Switched Telephone Network; 1.2: The Digital PSTN; 1.3: The Packet Revolution in Telephony; 1.3.1: Summary of Packet Switching; 1.3.2: Link Capacity: TDM versus Packets; 1.3.3: VoIP and ""The Cloud""; IN SHORT: Reading Network Drawings; 2: Traditional Telephones Still Set Expectations; 2.1: Availability: How the Bell System Ensured Service; 2.2: Call Completion. 2.3: Sound Quality: Encoding for Recognizable Voices2.4: Low Latency; 2.5: Call Setup Delays; 2.6: Impairments Controlled: Echo, Singing, Distortion, Noise; 3: From Circuits to Packets; 3.1: Data and Signaling Preceded Voice; 3.1.1: X.25 Packet Data Service; 3.1.2: SS7: PSTN Signaling on Packets; 3.1.3: ISDN; 3.2: Putting Voice into Packets; 3.2.1: Voice Encoding; 3.2.2: Dicing and Splicing Voice Streams; 3.2.3: The Latency Budget; 4: Packet Transmission and Switching; 4.1: The Physical Layer: Transmission; IN SHORT: The Endian Wars; 4.2: Data Link Protocols; 4.3: IP, the Network Protocol. 4.4: Layer 4 Transport Protocols4.4.1: Transmission Control Protocol; 4.4.2: User Datagram Protocol; 4.4.3: Stream Control Transmission Protocol; 4.5: Higher Layer Processes; 4.5.1: RTP; 4.5.2: RTCP; 4.5.3: Multiplexing RTP and RTCP on One UDP Port; 4.5.4: RTP Mixers and Translators; 4.5.5: Layered Encoding; 4.5.6: Profiles for Audio and Video Conferences; 4.5.7: Security via Encryption; IN SHORT: Public Key Infrastructure (PKI); 4.6: Saving Bandwidth; 4.6.1: Voice Compression; 4.6.2: Header Compression; 4.6.3: Silence Suppression, VAD; 4.6.4: Sub-Packet Multiplexing. 4.6.5: Protocol and Codec Selection4.7: Differences: Circuit versus Packet Switched; 4.7.1: Power to the Desktop Phone; 4.7.2: Phone as Computer and Computer as Phone; 4.7.3: Length of a Phone Line; 4.7.4: Scaling to Large Size; 4.7.5: Software Ownership and Licenses; 5: VoIP Signaling and Call Processing; 5.1: What Packet Voice and UC Systems Share; 5.2: Session Initiation Protocol (SIP); 5.2.1: SIP Architecture; 5.2.2: SIP Messages; 5.2.3: SIP Header Fields and Behaviors; 5.3: Session Description Protocol; IN SHORT: ABNF; 5.4: Media Gateway Control Protocol; 5.4.1: MGW Functions. 5.4.2: MGW Connection Model5.4.3: Megaco Procedures; 5.4.4: Megaco Details; 5.4.5: Signaling Conversion; 5.4.6: Voice Transcoding; 5.5: H.323; 5.5.1: H.323 Architecture; 5.5.2: Gatekeeper; 5.5.3: Gateway; 5.5.4: Terminal; 5.5.5: Multipoint Control Unit; 5.5.6: Call Procedures; 5.6: Directory Services; 5.6.1: Domain Name Service (DNS); 5.6.2: ENUM; 6: VoIP and Unified Communications Define the Future; 6.1: Voice as Before, with Additions; 6.2: Legacy Services to Keep and Improve with VoIP; 6.2.1: Flexible Call Routing and 800 Numbers; 6.2.2: Call on Hold; 6.2.3: Call Transfer. 6.2.4: Call Forwarding.
Other Titles: Understanding VoIP and unified communications and the future voice network
Responsibility: William A. Flanagan.

Abstract:

The new generation of voice services and telephony will be based on packet networks rather than TDM transmission and switching. This book addresses the evolution of telephony to Voice over IP (VoIP)  Read more...

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