VoIP et ToIP Asterisk
Ce livre sur la voix sur IP (VoIP et ToIP) est destiné aux acteurs du domaine des systèmes, réseaux et télécoms d'entreprises, ainsi qu'à toute personne souhaitant découvrir et comprendre ce domaine de la Voix sur IP. Il s'adresse également aux décideurs informatiques qui doivent faire évoluer leur architecture de téléphonie. Il permet de détailler toutes les étapes de la mise en place de l'autocom Open Source Asterisk, de la conception-architecture à la mise en production. La démarche progressive des différents chapitres permet d'aborder toutes les étapes indispensables pour mettre en production une T-VoIP autour d'Asterisk : du choix de l'architecture cible à la mise en œuvre d'un call center, en passant par l'installation du serveur, le choix des passerelles opérateurs, la nécessaire préparation du réseau, la mise en place d'un plan de numérotation éprouvé, l'interconnexion de sites distants et l'utilisation potentielle d'outils supplémentaires pour enrichir les fonctionnalités du PBX. Tous les sujets sont présentés avec de nombreux exemples pratiques. Des connaissances sur l'administration d'un système Linux sont souhaitables pour tirer le meilleur profit de cet ouvrage.
Provides information on Asterisk, an open source telephony application.
Wi Fi Telephony
Wi-Fi telephony is the latest, most cost effective, and clearest way of carrying voice data wirelessly. The great news is that it can be integrated seamlessly into the same infrastructures as currently used for computer and telephone data.The digital quality is far above current cellular technologies. This book will be among the first to discuss Session Initiation Protocol (SIP), Quality of Service (QoS), and interoperability in connection with Wi-Fi telephony. Security challenges are also presented and solved along these malleable wireless boundaries. In short, this book provides all the information necessary for effective, reliable, crystal clear Wi-Fi telephony service and implementation. *Using current telephone and computer infrastructure this technology can be implemented at low cost *The importance of Quality of Service (QoS) and security of Wi-Fi telephony is considered *Enhances the clarity of a call beyond a basic cellular phone using digital data transfer
Cisco IP Telephony
A guide to successful deployment of the Cisco IP Telephony solution Real-world case studies from the Cisco design consulting engineers who developed the PDIOO process provide practical advice on all stages of successful IPT deployment Concise understanding of the PDIOO phases enables architects and engineers to successfully deploy the Cisco IPT solution Division of the process into PDIOO phases provides a logical and defined guide for network engineers and architects as they proceed through each of the phases in deploying the Cisco IPT solution Includes detailed questionnaires for each phase of deployment in the PDIOO cycle—a great aid in understanding customer networks and requirements Network infrastructure design, call processing infrastructure design and applications, and voice-mail system design are covered in depth Cisco® IP Telephony (IPT) solutions are being deployed at an accelerated rate, and network architects and engineers need to understand the various phases involved in successful deployment: planning, design, implementation, operation, and optimization (PDIOO). On the road to that understanding, those involved need to collect information for each phase of deployment, and then follow through with the best architecture, deployment model, and implementation based on the data collected. Cisco IP Telephony: Planning, Design, Implementation, Operation, and Optimization is a guide for network architects and engineers as they deploy the Cisco IPT solution. With this book, you will master the PDIOO phases of the IPT solution, beginning with the requirements necessary for effective planning of a large-scale IPT network. From there, you’ll follow a step-by-step approach to choose the right architecture and deployment model. Real-world examples and explanations with technical details, design tips, network illustrations, and sample configurations illustrate each step in the process of planning, designing, implementing, operating, and optimizing a chosen architecture based on information you have collected. In-depth instruction on each PDIOO phase provides specific details about the tasks involved and best practices for successful implementation of the IPT solution. This book also contains predesigned questionnaires and PDIOO assistance tools that help you determine the requirements of each phase of the PDIOO cycle. Authors Ramesh Kaza and Salman Asadullah have been involved with Cisco IPT solutions from the beginning and have planned, designed, and implemented major IPT networks using the guidelines found here. Cisco IP Telephony: Planning, Design, Implementation, Operation, and Optimization provides the step-by-step explanations, details, and best practices acquired by the authors while working with the top Cisco IPT customers. 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.
This revised and updated edition integrates the latest in modern technology with traditional cartographic principles. While providing a solid conceptual foundation in cartographic methodology, the text also introduces the very latest advances that have greatly influenced cartographic techniques. The new edition reflects the increasing importance of cartography as the basis for further geographical study, the text has been updated throughout and chapters on the latest developments in cartography have been integrated. There is also a more widespread emphasis on multimedia and the web.
Design and Validation of Computer Protocols
This volume discusses the fundamental problems of designing logically consistent methods of communication between multiple computer processes. Standard protocol design problems, such as error control and flow control, are covered in detail, but also structured design methods and the construction of formal validation models. The book contains complete listings and explanations of new protocol validation and design tool called SPIN. Author is in charge of protocol design at Bell Labs. Professionals who bought Tanenbaum's COMPUTER NETWORKS, 2/E and Comer's TCP/IP will buy this. This is the first book to cover automated protocol design and validation tools extensively.
Clear and to the Point
True or False? Most PowerPoint presentations are: ?compelling ?illuminating ?informative ?clear and to the point Answer: False Make a change following the principles of Stephen Kosslyn: ?a world authority on the visual brain ?a clear and engaging writer Making PowerPoint presentations that are clear, compelling, memorable, and even enjoyable is not an obscure art. In this book, Stephen Kosslyn, a renowned cognitive neuroscientist, presents eight simple principles for constructing a presentation that takes advantage of the information modern science has discovered about perception, memory, and cognition. Using hundreds of images and sample slides, he shows the common mistakes many people make and the simple ways to fix them. For example, never use underlining to emphasize a word--the line will cut off the bottom of letters that have descending lines (such as p and g), which interferes with the brain's ability to recognize text. Other tips include why you should state your conclusion at the beginning of a presentation, when to use a line graph versus a bar graph, and how to use color correctly. By following Kosslyn's principles, anyone will be able to produce a presentation that works!
Playing with Sound
In Playing with Sound, Karen Collins examines video game sound from the player's perspective. She explores the many ways that players interact with a game's sonic aspects -- which include not only music but also sound effects, ambient sound, dialogue, and interface sounds -- both within and outside of the game. She investigates the ways that meaning is found, embodied, created, evoked, hacked, remixed, negotiated, and renegotiated by players in the space of interactive sound in games. Drawing on disciplines that range from film studies and philosophy to psychology and computer science, Collins develops a theory of interactive sound experience that distinguishes between interacting with sound and simply listening without interacting. Her conceptual approach combines practice theory (which focuses on productive and consumptive practices around media) and embodied cognition (which holds that our understanding of the world is shaped by our physical interaction with it). Collins investigates the multimodal experience of sound, image, and touch in games; the role of interactive sound in creating an emotional experience through immersion and identification with the game character; the ways in which sound acts as a mediator for a variety of performative activities; and embodied interactions with sound beyond the game, including machinima, chip-tunes, circuit bending, and other practices that use elements from games in sonic performances.
Professional Unified Communications Development with Microsoft Lync Server 2010
George Durzi A été écrit sous une forme ou une autre pendant la plus grande partie de sa vie. Vous pouvez trouver autant d'inspiration de Professional Unified Communications Development with Microsoft Lync Server 2010 Aussi informatif et amusant. Cliquez sur le bouton TÉLÉCHARGER ou Lire en ligne pour obtenir gratuitement le livre de titre $ gratuitement.