While many books describe the theory behind Voice over IP, only this one describes how such a phone system was actually built, and how you too can acquire the source code, install it onto a system, connect phones, and make calls. Because VOCAL is open source, you can look "under the hood" to discover how the system works, and how common problems are being worked out in the development environment.

Get unplugged for the wireless Internet revolution

Start building wireless Web applications and Web sites for the next generation of cellular telephones and Internet devices with the in-depth information contained in this volume. "WAP: A Beginner's Guide is an authoritative yet easy-to-understand reference that covers every aspect of this fast-growing protocol. Inside, you'll learn how to develop and deploy dynamic, platform-independent sites that will run smoothly on any WAP-enabled mobile device. Plus, you'll get step-by-step database integration, debugging, and security instructions. All of the functions and syntaxes of WML and WMLScript are covered, with real-world examples and in-depth explanations that will have you programming for wireless devices in no time.

• Create and deliver Internet content to mobile communicators, cellular phones, PDAs, and pagers
• Build cards, decks, elements, and links with WML
• Convert existing HTML, Java, VB, and ActiveX components
• Implement images, icons, tables, soft keys, and variables
• Accept and respond to user input using WMLScript
• Format Web data for small screens, monochrome displays, and low bandwidth
• Integrate e-mail services, timers, and notifications
• Incorporate Microsoft Access databases and Active Server Pages
• Test and debug code using the latest WML editors and emulators
• Secure WAP information with smart cards and WTLS

-- Step by step approach shows how to analyze networks carrying mission critical data such as voice over IP applications, streaming video and e-commerce.
-- Shows how to:
-- prevent network meltdowns before they occur
-- to collect, analyze and interpret MIBS using network-monitoring tools.
-- Learn how to analyze MIB output from Cisco Network Monitoring Tools, such as Cisco Works and Nortel.
-- Case studies on how leading financial firms use MIBS to prevent network failure before it occurs!

The Most Trusted Guide to Cisco Routers and TCP/IP. Now in an Updated Third Edition!

"This is a valuable reference that no networking pro should be without! This should have been in the box from Cisco." Jerry Curtis, Staff Writer, Windows NT User Group

See why thousands of networking professionals turn to Cisco TCP/IP Routing Professional Reference, time and time again for reliable hands-on guidance to implementing TCP/IP over Cisco routers. This practical reference features complete coverage on topics from router and protocol basics and security concerns to supporting legacy networks and performance troubleshooting, plus much more. Clearly written and packed with easy-to-follow instructions, this one-stop manual contains solutions appropriate for novices and seasoned professionals alike. And like the previous editions, you'll find more in this book than in current Cisco documentation. All configurations are fully updated to reflect the latest technological advancements and current versions of Cisco IOS 11 and 12.

New coverage includes: Added section on VPNs, including VPN implementation, management, and security Coverage of IOS firewall features New material on Cisco hardware Updated configuration examples for implementation on a 2600 platform and IOS versions 11 and 12

-- Contains everything network administrators are looking for to understand Cisco router internetworking, including:
-- a detailed explanation of Cisco IOS and router configuration from basic to advanced configurations.
-- how to successfully install and configure Cisco routers to build multiprotocol networks, from TCP/IP to OSPF and BGP
-- coverage of common WAN technologies such as Frame-Relay and ATM
-- creating Cisco router configuration files from scratch
-- Cisco oriented questions at the end of every chapter, which is great for certification preparation.

The definitive guide to troubleshooting today's complex BGP networks This is today's best single source for the techniques you need to troubleshoot BGP issues in modern Cisco IOS, IOS XR, and NxOS environments. BGP has expanded from being an Internet routing protocol and provides a scalable control plane for a variety of technologies, including MPLS VPNs and VXLAN. Bringing together content previously spread across multiple sources, Troubleshooting BGP describes BGP functions in today's blended service provider and enterprise environments. Two expert authors emphasize the BGP-related issues you're most likely to encounter in real-world deployments, including problems that have caused massive network outages. They fully address convergence and scalability, as well as common concerns such as BGP slow peer, RT constraint filtering, and missing BGP routes. For each issue, key concepts are presented, along with basic configuration, detailed troubleshooting methods, and clear illustrations. Wherever appropriate, OS-specific behaviors are described and analyzed. Troubleshooting BGP is an indispensable technical resource for all consultants, system/support engineers, and operations professionals working with BGP in even the largest, most complex environments. * Quickly review the BGP protocol, configuration, and commonly used features * Master generic troubleshooting methodologies that are relevant to BGP networks * Troubleshoot BGP peering issues, flapping peers, and dynamic BGP peering * Resolve issues related to BGP route installation, path selection, or route policies * Avoid and fix convergence problems * Address platform issues such as high CPU or memory usage * Scale BGP using route reflectors, diverse paths, and other advanced features * Solve problems with BGP edge architectures, multihoming, and load balancing * Secure BGP inter-domain routing with RPKI * Mitigate DDoS attacks with RTBH and BGP Flowspec * Understand common BGP problems with MPLS Layer 3 or Layer 2 VPN services * Troubleshoot IPv6 BGP for service providers, including 6PE and 6VPE * Overcome problems with VXLAN BGP EVPN data center deployments * Fully leverage BGP High Availability features, including GR, NSR, and BFD * Use new BGP enhancements for link-state distribution or tunnel setup This book is part of the Networking Technology Series from Cisco Press, which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful careers.

Get the latest information on optical networking technologies, companies and trends.

Penetrate the facts behind the speculation on optical networking’s promise as a potential solution to skyrocketing Internet traffic. With Steve Shepard’s Optical Networking Crash Course, you’ll discover what’s what, who’s who, and how it all works together in the speed-of-light world of optical networking. From technologies, equipment, companies and competitors to nitty-gritty issues such as security, signal sinks, backhoe fade, add-drop mix and much, much more, this state-of-the-art guide is a must-read if you want to:

Compare optical and other strategies such as cable, DSL, and LMDS

Understand optical technology means, methods, potentials, and constraints

Learn what DWDM (Dense Wave Division Multiplexing) is and why it could change everything

Get straight answers on optical transport issues, routing, switching and more.

This guide to all the major protocols of a TCP/IP-based network includes an introduction to binary and hexadecimal arithmetic and coverage of L2TP, LAN analysis screens and engineering-level detail on IPv6 routing. The second edition also features: an enhanced description of IP, including IPv6, plus examples of dynamic routing such as RIPv2, OSPF, BGP, NAT and CIDR; enhanced descriptions of ARP, RARP and BOOTP, with added descriptions of IARP, DHCP and RADIUS; a revised description of FTP; and an added description of HTTP.

Embedded vision is the integration of "computer vision" into machines that use algorithms to decode meaning from observed images or video.It has a wide range of applications to machine learning, artificial intelligence, industrial, medical, driverless cars, drones, smart phones,aerospace, defense, agriculture, consumer, surveillance, robotics and security.This book is an introductory guide for anyone who is interested in designing machines that have vision-enabled, embedded products. It covers a large number of topics encountered in hardware architecture, software algorithms, applications,advancements in camera, processors, and sensors in the field of embedded vision. Features: Includes a wide range of applications to artificialintelligence, machine learning, industry,science, medicine, transportation, civil infrastructure, and security Covers a large number of topics encountered in hardwarearchitecture, software algorithms, applications, advancements in processors andsensors.

A guide to the current technologies related to the delivery process for both live and on-demand services within IPTV delivery networks IPTV Delivery Networks is an important resource thatoffers an in-depth discussion to the IPTV (Internet Protocol Television) delivery networks for both live and on demand IPTV services.This important book also includes a review of the issues and challenges surrounding the delivery of IPTV over various emerging networking and communications technologies. The authors -- an international team of experts -- introduce a framework for delivery network applicable for live and video-on-demand services. They review the fundamental issues of IPTV delivery networks and explore the QoS (Quality of Service) issue for IPTV delivery networks that highlights the questions of security and anomaly detection as related to quality. IPTV Delivery Networks also contains a discussion of the mobility issues and next-generation delivery networks. This guide captures the latest available and usable technologies in the field and: Explores the technologies related to delivery process for both live (real time) and on demand services in highly accessible terms Includes information on the history, current state and future of IPTV delivery Reviews all the aspects of delivery networks including storage management, resource allocation, broadcasting, video compression, QoS and QoE Contains information on current applications including Netflix (video on demand), BBC iPlayer (time-shifted IPTV) and live (real time) streaming Written for both researchers and industrial experts in the field of IPTV delivery networks. IPTV Delivery Networks is a groundbreaking book that includes the most current information available on live and on demand IPTV services.

The convergence of two powerful technologies wireless and the Internet through IPv4/v6 protocol has led to emergence of next-generation networks (NGNs). NGN is no more a network of mere computers but a connected conglomeration of varied networks with diverse physical properties, with a plethora of network elements, along with a variety of real-time multimedia applications. This book covers the entire gamut of technology challenges from physical layer to application layer including security from both academic and industrial perspectives.

This volume contains the proceedings of the 2017 International Conference on Wireless Networks (ICWN'17).

Now in its fourth edition, the ground-breaking Artech House bestseller SIP: Understanding the Session Initiation Protocol offers you the most comprehensive and current understanding of this revolutionary protocol for call signaling and IP Telephony. The fourth edition incorporates changes in SIP from the last five years with new chapters on internet threats and attacks, WebRTC and SIP, and substantial updates throughout. This cutting-edge book shows how SIP provides a highly-scalable and cost-effective way to offer new and exciting telecommunication feature sets, helping practitioners design "next generation" network and develop new applications and software stacks. Other key discussions include SIP as a key component in the Internet multimedia conferencing architecture, request and response messages, devices in a typical network, types of servers, SIP headers, comparisons with existing signaling protocols including H.323, related protocols SDP (Session Description Protocol) and RTP (Real-time Transport Protocol), and the future direction of SIP.

This volume contains the proceedings of the 2018 International Conference on Wireless Networks (ICWN'18). ICWN is an international conference that serves researchers, scholars, professionals, students, and academicians who are looking to both foster working relationships and gain access to the latest research results.

This book is a general introduction to the statistical analysis of networks, and can serve both as a research monograph and as a textbook. Numerous fundamental tools and concepts needed for the analysis of networks are presented, such as network modeling, community detection, graph-based semi-supervised learning and sampling in networks. The description of these concepts is self-contained, with both theoretical justifications and applications provided for the presented algorithms.Researchers, including postgraduate students, working in the area of network science, complex network analysis, or social network analysis, will find up-to-date statistical methods relevant to their research tasks. This book can also serve as textbook material for courses related to thestatistical approach to the analysis of complex networks.In general, the chapters are fairly independent and self-supporting, and the book could be used for course composition "a la carte". Nevertheless, Chapter 2 is needed to a certain degree for all parts of the book. It is also recommended to read Chapter 4 before reading Chapters 5 and 6, but this is not absolutely necessary. Reading Chapter 3 can also be helpful before reading Chapters 5 and 7. As prerequisites for reading this book, a basic knowledge in probability, linear algebra and elementary notions of graph theory is advised. Appendices describing required notions from the above mentioned disciplines have been added to help readers gain further understanding.

This book presents applications of MEF's (Metro Ethernet Forum) Carrier Ethernet architecture and provides insight into building end-to-end systems with third network services like MPLS-TP, VPLS, and PBT. It highlights the pros and cons of lifecycle service orchestration (LSO), virtualization and cloud series for service providers and enterprise network owners. The book also covers Ethernet protection like automatic protection switching (APS) entities, linear and ring protection and link aggregators. Readers will find chapters on provider bridges (PB) and information modeling along with a detailed overview of pseudowires and multisegment architectures, control planes and multisegment pseudowire setup mechanisms.

Advances in multimedia communication systems have enhanced the need for improved video coding standards. Due to the inherent nature of video content, large bandwidths and reliable communication links are required to ensure a satisfactory level of quality experience; inspiring industry and research communities to concentrate their efforts in this emerging research area. Multimedia Networking and Coding covers widespread knowledge and research as well as innovative applications in multimedia communication systems. This book highlights recent techniques that can evolve into future multimedia communication systems, also showing experimental results from systems and applications.

Increased reliance on mobile devices and streaming of video content are two of the most recent changes that have led those in the video distribution industry to be concerned about the shifting or erosion of traditional advertising revenues. Infrastructure providers also need to position themselves to take advantage of these trends. "Mobile Video with Mobile IPv6 "provides an overview of the current mobile landscape, then delves specifically into the capabilities and operational details of IPv6. The book also addresses 3G and 4G services, the application of Mobile IPv6 to streaming and other mobile video outputs, and closes with a chapter on future directions.

Whether you are a developer, engineer, researcher or student, this practical guide gives you everything you need to know about NFC technology and its applications. You will learn what differentiates NFC from other short-range technologies such as contactless cards, RFID and Bluetooth, as well as discovering the opportunities it provides, from a fast and instinctive user interface with no infrastructure requirements to the world of Secure Elements, Trusted Service Managers, mobile wallets and the Internet of Things. With critical applications in areas including advertising, retail and transportation, this book demonstrates how you can use NFC technology practically to make transactions easier and quicker. All of this is supplemented with an array of in-depth case studies and real-life examples to reinforce your understanding, along with detailed coverage of the problems associated with the wider commercial introduction of NFC and strategies that can be used to aid its future development.

A guide to wide-area data network performance engineering. It discusses the skills needed to design a router network carrying a variety of traffic, including Internet and intranet, over frame relay devices. It covers routers, protocols including TCP/IP, SNA and Novell, protocol behaviour over a WAN, applications, performance engineering, network management and maintenance, and more. The text offers itself as a resource to keep on hand while operating, maintaining, upgrading, or migrating existing networks. It helps the reader to make difficult decisions involving hardware, software, frame relay and private lines, ATM, and application benchmarking to test new applications on the WAN.

Understand the world of modern network automation with Go and deepen your knowledge with insights from 10+ experts who have real-world hands-on experience with network automation and/or are using Go for network-related tasks Key Features A comprehensive guide to the world of modern network automation Use Go to build anything from repetitive task automation to complex distributed systems Over 30 practical, ready-to-use sample programs Book DescriptionGo's built-in first-class concurrency mechanisms make it an ideal choice for long-lived low-bandwidth I/O operations, which are typical requirements of network automation and network operations applications. This book provides a quick overview of Go and hands-on examples within it to help you become proficient with Go for network automation. It's a practical guide that will teach you how to automate common network operations and build systems using Go. The first part takes you through a general overview, use cases, strengths, and inherent weaknesses of Go to prepare you for a deeper dive into network automation, which is heavily reliant on understanding this programming language. You'll explore the common network automation areas and challenges, what language features you can use in each of those areas, and the common software tools and packages. To help deepen your understanding, you'll also work through real-world network automation problems and apply hands-on solutions to them. By the end of this book, you'll be well-versed with Go and have a solid grasp on network automation. What you will learn Understand Go programming language basics via network-related examples Find out what features make Go a powerful alternative for network automation Explore network automation goals, benefits, and common use cases Discover how to interact with network devices using a variety of technologies Integrate Go programs into an automation framework Take advantage of the OpenConfig ecosystem with Go Build distributed and scalable systems for network observability Who this book is forThis book is for all network engineers, administrators, and other network practitioners looking to understand what network automation is and how the Go programming language can help develop network automation solutions. As the first part of the book offers a comprehensive overview of Go's main features, this book is suitable for beginners with a solid grasp on programming basics.

SECURING and EVOLVING ARCHITECTURES 5G initiates a period of technological evolution where the benefits transcend faster data download speeds and enable services that will change the way we all live and consume technology. Leveraging 5G's openness, a new developer ecosystem is building breakthrough services that billions of people will consume, delivering immense value to enterprises and subscribers alike. For 5G to achieve its potential, organizations must embrace multi-layered security that goes far beyond 3GPP specifications. Now, leading security architect Pramod Nair helps network professionals climb the steep learning curve associated with securing 5G, fully understand its threat surfaces, systematically mitigate its risks, and maximize the value of their security investments. This coherent, pragmatic, and vendor-agnostic guide will help you plan for security from the outset, make better choices throughout the lifecycle, and develop the mindset needed to secure new generations of networks. You'll find all you need: from high-level 5G security concepts to in-depth coverage of specific security controls, end-to-end architectural guidance, 5G security use cases, and cutting-edge "quantum proofing." Throughout, practical examples and real-life scenarios help you apply Nair's insights---whether you're a service provider, an enterprise, an industry vertical, a startup, a cybersecurity vendor, a systems integrator, or even in a defense environment. Securing 5G and Evolving Architectures is for technical and management audiences at all levels of 5G experience---from enterprise and security architects to network engineers, cloud computing and data center professionals, to CSO and CTO teams. Explore new 5G security challenges---and why you still need external controls, even with recent 3GPP improvements Implement network component security controls for RAN, Transport, 5GC, and devices Safeguard Multi-Access Edge Compute (MEC), SDNs, virtualized 5G cores, and massive IOT Protect Public and Non-Public Networks (Private 5G) deployment scenarios Secure Critical Infrastructure, Vehicle to Everything (V2X), and Smart Factory use cases Optimize end-to-end 5G security architecture across all 5G domains based on zero trust Prioritize 5G security investments in service provider or enterprise environments Preview emerging 5G use cases and ML/AI-based security enhancements

Rapid development of new technologies is leading to ever more versatile, multipurpose mobile devices, including 4G and 5G smartphones. Wireless networking and wireless Internet access are developing and expanding on a global basis at a rapid rate. Meanwhile, RFID (radio frequency identification) will revolutionize wireless tracking, inventory and logistics, from manufacturing to shipping to retailing. We analyze mobile advertising, mobile banking, WiMax, LTE and other wireless standards. Mobile entertainment is covered, including TV and other programming adapted for the cell screen. In addition, we cover wireless markets in India, China and Africa, competition between handset manufacturers, as well as the iPhone and other smartphones. Our coverage includes business trends analysis and industry statistics. We also include a wireless and cellular business glossary and a listing of industry contacts, such as industry associations and government agencies. Next, we profile hundreds of leading companies. Our 330 company profiles include complete business descriptions and up to 27 executives by name and title. You'll find a complete overview, industry analysis and market research report in one superb, value-priced package.

Gain a Deep, Practical Understanding of 5G Technology, Applications, Architecture, Standards, and Ecosystem The 5G ultra-high-speed wireless communication standard is a major technological leap forward--substantially increasing speed and capacity, enhancing current use cases, and making many new applications practical. For technical professionals, managers, and students, 5G requires significant new knowledge and expertise. In 5G Wireless: A Comprehensive Introduction, renowned information technology author William Stallings presents a comprehensive and unified explanation of 5G's key applications, technologies, and standards. Like Stallings' other award-winning texts, this guide will help you quickly find the information and gain the mastery to succeed with critical new technology. Stallings first explains how cellular networks have evolved through 4G and now 5G, and surveys 5G's application areas and use cases. Next, he thoroughly introduces the 5G core network, covering SDN, NFV, network slicing, QoS, and edge computing--and provides a detailed coverage of the 5G air interface and radio access network. Throughout, key concepts are illuminated through realistic examples, review questions help you test your understanding, and references support further exploration. Understand the 5G ecosystem, its building blocks, standards, and R&D roadmaps Explore the Enhanced Mobile Broadband (eMBB) use case, where 5G enhances 4G in applications such as smart offices and dense urban communications Learn how Massive Machine Type Communications (mMTC) and Ultra-Reliable and Low-Latency Communications (URLCC) support new applications such as fog, IoT, and cloud Discover how 5G NextGen core (backbone) networks serve and interconnect wireless access networks that connect user devices Master key 5G NR Air Interface and Radio Access Network (RAN) concepts, including millimeter-wave transmission, MIMO antennas, and OFDM multiplexing

This book introduces the background, basic concepts and evolution of computer network development; by comparing and contrasting with the typical network architectures in the market. The book focuses on the architecture and underpinning technologies towards the future in network designs. It also provides a reconfigurable evolutionary network function innovation platform for researches to run experiments on the networks they designed. The contents of this book are novel, informative, and practical — a reflection of the state-of-art development in network architecture. This book is written for engineers and researchers specializing in communications or computer networks. It could also be adopted as a textbook for graduate students majoring in communications, computing, and computer network related disciplines in colleges and universities.