Deploying Voice over Wireless LANs The definitive guide to planning, architecting, deploying, supporting, and creating Voice over Wireless LAN solutions Recent advances make it possible to deliver high-quality voice and video communications over a wireless LAN (WLAN), replacing costly wired telephone and video surveillance systems and dramatically reducing support costs. However, today's new voice over WLAN (VoWLAN) technologies require fundamentally different skills and techniques from those used in traditional voice and video systems. Now, there's a complete guide to every facet of VoWLAN deployment: planning, design, installation, security, maintenance, and troubleshooting. Authored by wireless industry expert and leader Jim Geier, Deploying Voice over Wireless LANs draws on Geier's extensive experience with real-world VoWLAN deployments. Geier brings together state-of-the-art insights into VoWLAN technologies, standards, products, services, implementation strategies, and much more. Geier begins by introducing key components of today's VoWLAN systems, including phones, client software, and voice encoders/decoders, as well as VoWLAN signaling essentials such as analog-to-digital (A/D) conversion and compression. Using examples drawn from actual enterprise settings, you'll learn exactly how VoWLAN products integrate with existing IP infrastructure. Next, he introduces crucial emerging 802.11 standards for effective VoWLAN deployment, including 802.11e quality of service (QoS) standards, 802.11r to minimize packet loss between access points, and 802.11k network discovery. He carefully reviews the security implications of VoWLAN voice, systematically covering both risks and countermeasures. Finally, Geier walks through implementation from start to finish, thoroughly covering analysis, design, installation, configuration, testing, and support. Whatever your role in planning, delivering, managing, or creating wireless voice and video solutions, Deploying Voice over Wireless LANs is your most comprehensive, authoritative resource. Jim Geier founded Wireless-Nets, Ltd., and serves as its principal consultant. His 25 years of experience includes the analysis, design, software development, installation, and support of numerous wireless networking systems. He has been active within the Wi-Fi Alliance and the IEEE 802.11 Working Group and helped develop international standards for WLANs. His books include Wireless Networks First Step (Cisco Press), Wireless LANs (Sams), Wireless Networking Handbook (MTP), and Network Reengineering. * Understand VoWLAN components, applications, and benefits * See VoWLAN at work in actual enterprise environments * Master VoWLAN signaling, including voice signal characteristics, A/D conversion, and compression * Discover the latest 802.11 VoWLAN standards, including 802.11e, 802.11r, and 802.1 1k * Secure IP-based VoWLAN systems against intrusion and compromise * Analyze your organization's requirements and design an optimal VoWLAN solution * Plan for capacity, roaming, and integration with cellular systems * Install, configure, test, verify, and validate your VoWLAN system * Plan for operational support and implement appropriate administration tools and methods * Includes a complete VoWLAN glossary Part I Fundamental Elements Chapter 1 VoWLAN Applications and Benefits Chapter 2 VoWLAN System Components Chapter 3 VoWLAN Signaling Fundamentals Part II Critical Technologies Chapter 4 Wireless LAN Technologies Chapter 5 VoWLAN Security Solutions Part III Implementation Steps Chapter 6 Analyzing VoWLAN Requirements Chapter 7 Designing a VoWLAN Solution Chapter 8 Installing, Configuring, and Testing a VoWLAN System Chapter 9 Supporting a VoWLAN System Appendix A Answers to Chapter Review Questions Glossary This book is part of the Networking Technology Series from Cisco Press(R), which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful careers. Category: Cisco Press-Networking Covers: Voice over Wireless LAN Solutions
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我最近偶然看到了《Deploying Voice Over Wireless Lans》这本图书的信息,它似乎瞄准了一个非常具体且重要的技术领域。作为一名网络工程师,我深知在无线环境中实现高质量的语音通信并非易事,其中涉及到大量的技术挑战和权衡。我希望这本书能够提供关于如何平衡无线网络负载,尤其是在高密度用户环境下,如何确保VoIP流量获得优先级的解决方案。我想了解书中是否会讨论诸如WMM(Wi-Fi Multimedia)的配置细节,以及如何根据不同的语音编解码器(如G.711, G.729)来调整QoS策略。此外,我个人对无线漫游(roaming)在VoIP部署中的作用非常感兴趣,希望书中能详细阐述无缝漫游对语音通话连续性的重要性,并提供相关的配置技巧和故障排除指南。一个能够解答我在解决无线网络拥塞、干扰以及优化漫游性能方面疑虑的资源,对我来说将是无价的。
评分这本书的标题《Deploying Voice Over Wireless Lans》一开始就吸引了我,因为我一直对如何在无线网络环境中稳定可靠地传输语音数据很感兴趣。我所在的团队正面临着将IP电话系统迁移到我们现有的Wi-Fi基础设施上的挑战,而市面上关于这个主题的书籍并不多,特别是那些能够深入讲解实际部署细节的。我希望能找到一本不仅能介绍VoIP和WLAN的基本原理,更能提供详实的技术指南,涵盖从网络规划、设备选型、配置最佳实践到故障排除的各个方面。我期待这本书能够解答我在QoS(服务质量)设置、信道选择、漫游支持、安全策略以及如何优化现有无线网络以应对语音流量激增等方面的疑虑。如果这本书能提供真实的案例研究,或者展示一些成功的部署方案,那就更好了。我希望它能帮助我避免走弯路,快速高效地完成这次迁移,最终实现低延迟、高清晰度的语音通信,同时不影响其他无线应用的使用。毕竟,在现代企业通信中,语音的稳定性和质量是至关重要的。
评分最近我接触到一本名为《Deploying Voice Over Wireless Lans》的书,虽然我还没来得及细读,但从其内容梗概和出版信息来看,它似乎提供了一个非常引人入胜的视角来探讨无线语音部署的复杂性。我尤其对书中可能涉及的关于不同无线标准(如802.11n, 802.11ac, 甚至最新的802.11ax)对VoIP性能的影响这一部分感到好奇。我希望作者能深入分析这些标准在带宽、延迟、抗干扰能力等方面的差异,以及它们如何直接或间接地影响语音通话的质量。此外,我设想书中会详细讲解如何利用这些无线技术特性来优化VoIP流量,例如通过调整信道宽度、功率控制、或者利用MU-MIMO等先进技术来提高频谱效率。如果这本书能够提供一些量化的数据,例如在不同部署场景下,不同Wi-Fi标准能为VoIP带来多少性能提升,那就更有说服力了。我对那些能够深入分析技术原理并给出实操性建议的书籍总是情有独钟。
评分我对《Deploying Voice Over Wireless Lans》这本书的标题感到非常兴奋,因为它恰好填补了我知识体系中的一个空白。我一直在寻找一本能够深入剖析无线网络环境下IP语音部署的详细指南。尤其让我感兴趣的是,书中是否会涉及如何处理Wi-Fi网络中的安全挑战,以保护语音数据的机密性和完整性。例如,如何配置WPA2/WPA3企业模式,结合 RADIUS 服务器进行用户认证,以及如何隔离VoIP流量,防止未经授权的访问?此外,我希望书中能够深入探讨不同类型的无线接入点(AP)和控制器(Controller)在VoIP部署中的作用,以及它们之间的配合机制。如果作者能够提供一些关于如何规划和管理无线网络QoS策略的实用建议,特别是如何为语音流量分配足够的带宽和优先级,以确保通话质量不受其他数据流量的影响,那就太棒了。一本能够提供全面指导,帮助读者理解并克服在无线环境中部署VoIP所面临的各种挑战的书籍,对我来说无疑是极其宝贵的。
评分《Deploying Voice Over Wireless Lans》这个书名本身就勾起了我极大的兴趣,因为它直接触及了我工作中一个非常棘手的问题:如何在无线网络上保证语音通信的稳定性和清晰度。我一直认为,仅仅搭建一个无线网络是不够的,真正考验技术功底的是如何在这样的环境中支持对实时性要求极高的VoIP应用。我希望这本书能提供一套系统性的方法论,从最初的网络设计阶段就开始考虑VoIP的需求。比如,书中是否会讨论如何进行详细的无线站点勘测(site survey),以确定最佳的AP(Access Point)部署位置和数量,从而最大程度地减少同频干扰和信号衰减,为VoIP提供稳定的覆盖?我特别期待书中能够提供一些关于如何利用频谱分析仪等工具来诊断和解决无线语音通信中的常见问题,例如丢包、抖动和延迟。如果书中能够包含一些经过验证的配置模板或者最佳实践,那将大大提高我的工作效率。
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