[预售 蓝牙声麦与整合通讯 互联网电话和未来的语音网络 Voip And Unified Communications 英文原版 William Flanagan【中商原版】]
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Описание товара
[蓝牙声麦与整合通讯：互联网电话和未来的语音网络 Voip And Unified Communications: Internet Telephony And The Future Voice Ne]twork
[基本信息]
Format:Paperback / softback 320 pages
Publisher:John Wiley& Sons Inc
Imprint:John Wiley& Sons Inc
ISBN:9781118019214
Published:13 Apr 2012
Weight:532g
Dimensions:233 x 161 x 20 (mm)
[参数仅供参考，具体以实物为准]
[书籍简介●]
[将技术术语转化为实用的商业通信解决方案]
[本书将读者从通过独立平][台][提供的传统语音、传真、视频和数据服务带入通过互联网无缝提供所有这些服务的单一统一平][台。][作者通过清晰、不带术语的解释，让所有读者都能更好地理解和评估为企业提供的越来越多的网络电话（VoIP）和统一通信（]UC[）产品和服务。]
[VoIP 和统一通信》基于作者对 7000 多页已发布标准以及大量数据表、网站、白皮书和网络研讨会的仔细审查和综合。本书先介绍了 IP 技术，然后涵盖了以下主题：]
[●数据包传输和交换]
[●VoIP 信令和呼叫处理]
[●VoIP 和统一通信如何定义未来]
[●与全球服务的互联]
[●VoIP 和统一通信的网络管理]
[本书有完整的一章专门介绍成本分析和投资回报计算，使读者能够准确地确定迁移到各种 VoIP 和统一通信产品和服务的短期和长期财务影响。还有一章详细介绍了主要的 IP 系统硬件和软件。在全书中，图表说明了各种 VoIP 和统一通信组件和系统的工作原理。此外，作者还强调了统一通信服务的潜在问题和威胁，引导读者远离常见陷阱。]
[本书简明扼要、切中要害，使读者--从新手到经验丰富的工程师和技术经理--都能了解 VoIP 和统一通信的真正工作原理，从而使每个人都能自信地与网络工程师、数据中心大师和高层管理人员打交道。]
[Translates technical jargon into practical business communications solutions]
This b[ook 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 Interne]t. With its clear, jargon-free explanations, the author enabl[es all readers to better understand and assess the growing number of voice over Internet protocol (VoIP) and unified communications (]UC) products and services that are available for businesses.
VoIP and Unified Communications is b[ased on the author's careful review and synthesis of more than 7,000 pages of pu]bl[ished standards as well as a broad range of datasheets, websites, white papers, and webinars. It begins with an introd]uction to IP technology and then covers such topics as:
Packet transmission and switching
VoIP signaling and call processing
How VoIP and UCare defining the future
Interconnections with global services
Network management for VoIP and UC
This b[ook features a complete chapter dedicated to cost] analyses and payback calculations, enabling readers to accurately det[ermine the short- and long-term financial impact of migrating to various VoIP and] UCproduc[ts and services. There's also a chapter] det[ailing major IP systems hardware and sof]tw[are. Throughout the book, diagrams illustrate how various VoIP and] UC[components and systems work. In addition, the author highlights potential pro]blems and threats to UC[services, steering readers away from common pitfalls.]
Concise and to the point, this text enables readers—[from novices to experienced engineers and technical m]anagers—to understand how VoIP and UC[really work so that everyone can confidently] deal with netw[ork engineers, data center gurus, and top m]anagement.
[作者简介]
WILLIAM A. FLANA[GAN 是 Fl]ana[gan Consulting 公司的总裁兼创始人。Fl]ana[gan 先生拥有三十年的电信经验，是语音和数据技术、产品、市场和客户方面的专家。他的网络设计为企业、政府机构和运营商解决了许多问题。]
WILLIAM A. FLANAGAN is President and founder of Flana[gan Consulting. With three decades of telecommunications experience, Mr. Fl]ana[gan is an expert in voice and data technologies, prod]ucts, markets, and customers. His network designs have solved probl[ems for enterprises, government agencies, and carriers.]
[目录]
[部分目录，仅供参考]
Preface xiii
Acknowledgments xv
[1 IP Technology Disrupts Voice Telephony 1]
1.1 Introduction to the Public Switched Telephone Network 1
1.2 The Digital PSTN 2
[1.3 The Packet Revolution in Telephony 8]
1.3.1 Summary of Packet Switching 9
[1.3.2 Link Capacity: TDM versus Packets 11]
1.3.3 VoIP and“The Cloud” 13
IN SHORT: Reading Network Drawings 14
[2 Traditional Telephones Still Set Expectations 17]
[2.1 Availability: How the Bell System Ensured Service 18]
2.2 Call Completion 19
[2.3 Sound Quality: Encoding for Recogniza]ble Voices 20
2.4 Low Latency 23
2.5 Call Setup Delays 24
[2.6 Impairments Controlled: Echo, Singing, Distortion, Noise 25]
3 From Circuits to Packets 27
[3.1 Data and Signaling Preceded Voice 27]
3.1.1 X.25 Packet Data Service 27
3.1.2 SS7: PSTN Signaling on Packets 28
3.1.3 ISDN 29
3.2 Putting Voice into Packets 30
3.2.1 Voice Encoding 31
[3.2.2 Dicing and Splicing Voice Streams 32]
3.2.3 The Latency Budget 33
4 Packet Transmission and Switching 37
4.1 The Physical Layer: Transmission 39
IN SHORT: The Endian Wars 40
4.2 Data Link Protocols 41
4.3 IP, the Network Protocol 43
4.4 Layer 4 Transport Protocols 47
4.4.1 Transmission Control Protocol 47
4.4.2 User Datagram Protocol 50
[4.4.3 Stream Control Transmission Protocol 51]
4.5 Higher Layer Processes 54
4.5.1 RTP 54
