Author : Gerardo Barajas Puente
Publisher : Packt Publishing Ltd
Page : 348 pages
File Size : 12,58 MB
Release : 2015-03-31
Category : Computers
ISBN : 1849519358
This book is aimed at those who want to learn how to set up an Elastix Unified Communications Server without losing ground on Unified Communications and Voice over IP.
Author : Russell Bryant
Publisher : "O'Reilly Media, Inc."
Page : 1011 pages
File Size : 35,95 MB
Release : 2013-05-10
Category : Computers
ISBN : 1449332455
Design a complete Voice over IP (VoIP) or traditional PBX system with Asterisk, even if you have only basic telecommunications knowledge. This bestselling guide makes it easy, with a detailed roadmap that shows you how to install and configure this open source software, whether you’re upgrading your existing phone system or starting from scratch. Ideal for Linux administrators, developers, and power users, this updated edition shows you how to write a basic dialplan step-by-step, and brings you up to speed on the features in Asterisk 11, the latest long-term support release from Digium. You’ll quickly gain working knowledge to build a simple yet inclusive system. Integrate Asterisk with analog, VoIP, and digital telephony systems Build an interactive dialplan, using best practices for more advanced features Delve into voicemail options, such as storing messages in a database Connect to external services including Google Talk, XMPP, and calendars Incorporate Asterisk features and functions into a relational database to facilitate information sharing Learn how to use Asterisk’s security, call routing, and faxing features Monitor and control your system with the Asterisk Manager Interface (AMI) Plan for expansion by learning tools for building distributed systems
Author : Leif Madsen
Publisher : "O'Reilly Media, Inc."
Page : 68 pages
File Size : 49,9 MB
Release : 2011-03-30
Category : Computers
ISBN : 1449307205
Asterisk has a wealth of features to help you customize your PBX to fill very specific business needs. This short cookbook offers recipes for tackling dialplan fundamentals, making and controlling calls, and monitoring channels in your PBX environment. Each recipe includes a simple code solution you can put to work immediately, along with a detailed discussion that offers insight into why and how the recipe works. This book focuses on Asterisk 1.8, although many of the conventions and information presented are version-agnostic. These recipes include solutions to help you: Authenticate callers before moving on in your dialplan Redirect calls received by your auto-attendant Create an automatic call-back service Initiate hot-desking to login to and accept calls at any office device Monitor and interrupt live calls to train new employees at a call center Record calls from your Asterisk dialplan
Author : John Walkenbach
Publisher : John Wiley & Sons
Page : 404 pages
File Size : 30,3 MB
Release : 2011-02-08
Category : Computers
ISBN : 1118050800
Step-by-step instructions for creating VBA macros Harness the power of VBA and create custom Excel applications Make Excel 2007 work for you! This clear, nonintimidating guide shows you how to use VBA to create Excel apps that look and work the way you want. Packed with plenty of sample programs, it explains how to work with range objects, control program flow, develop custom dialog boxes, create custom toolbars and menus, and much more. Discover how to Grasp essential programming concepts Use the Visual Basic Editor Navigate the new Excel user interface Communicate with your users Deal with errors and bugs
Author : Jim Van Meggelen
Publisher : "O'Reilly Media, Inc."
Page : 602 pages
File Size : 12,92 MB
Release : 2007-08-28
Category : Computers
ISBN : 0596510489
Provides information on Asterisk, an open source telephony application.
Author : Evgenii Krouk
Publisher : John Wiley & Sons
Page : 691 pages
File Size : 10,57 MB
Release : 2011-02-21
Category : Technology & Engineering
ISBN : 0470745053
The high level of technical detail included in standards specifications can make it difficult to find the correlation between the standard specifications and the theoretical results. This book aims to cover both of these elements to give accessible information and support to readers. It explains the current and future trends on communication theory and shows how these developments are implemented in contemporary wireless communication standards. Examining modulation, coding and multiple access techniques, the book is divided into two major sections to cover these functions. The two-stage approach first treats the basics of modulation and coding theory before highlighting how these concepts are defined and implemented in modern wireless communication systems. Part 1 is devoted to the presentation of main L1 procedures and methods including modulation, coding, channel equalization and multiple access techniques. In Part 2, the uses of these procedures and methods in the wide range of wireless communication standards including WLAN, WiMax, WCDMA, HSPA, LTE and cdma2000 are considered. An essential study of the implementation of modulation and coding techniques in modern standards of wireless communication Bridges the gap between the modulation coding theory and the wireless communications standards material Divided into two parts to systematically tackle the topic - the first part develops techniques which are then applied and tailored to real world systems in the second part Covers special aspects of coding theory and how these can be effectively applied to improve the performance of wireless communications systems
Author : R. Joe Cooper
Publisher :
Page : 312 pages
File Size : 21,40 MB
Release : 2003
Category : Computers
ISBN : 9781886411920
Publisher description
Author : Michał Karzyński
Publisher : Packt Publishing Ltd
Page : 591 pages
File Size : 36,39 MB
Release : 2014-03-26
Category : Computers
ISBN : 1849515859
Written in a cookbook format with practical recipes this book helps you to perform various administrative tasks using Webmin and enables you to perform common jobs more efficiently. This book is perfect for System administrators who want to learn more advanced concepts of Webmin and how it can help to set up a server for development, testing or deployment.
Author : Ric Messier
Publisher : John Wiley & Sons
Page : 592 pages
File Size : 21,16 MB
Release : 2019-06-25
Category : Computers
ISBN : 1119533198
As protecting information becomes a rapidly growing concern for today’s businesses, certifications in IT security have become highly desirable, even as the number of certifications has grown. Now you can set yourself apart with the Certified Ethical Hacker (CEH v10) certification. The CEH v10 Certified Ethical Hacker Study Guide offers a comprehensive overview of the CEH certification requirements using concise and easy-to-follow instruction. Chapters are organized by exam objective, with a handy section that maps each objective to its corresponding chapter, so you can keep track of your progress. The text provides thorough coverage of all topics, along with challenging chapter review questions and Exam Essentials, a key feature that identifies critical study areas. Subjects include intrusion detection, DDoS attacks, buffer overflows, virus creation, and more. This study guide goes beyond test prep, providing practical hands-on exercises to reinforce vital skills and real-world scenarios that put what you’ve learned into the context of actual job roles. Gain a unique certification that allows you to understand the mind of a hacker Expand your career opportunities with an IT certificate that satisfies the Department of Defense’s 8570 Directive for Information Assurance positions Fully updated for the 2018 CEH v10 exam, including the latest developments in IT security Access the Sybex online learning center, with chapter review questions, full-length practice exams, hundreds of electronic flashcards, and a glossary of key terms Thanks to its clear organization, all-inclusive coverage, and practical instruction, the CEH v10 Certified Ethical Hacker Study Guide is an excellent resource for anyone who needs to understand the hacking process or anyone who wants to demonstrate their skills as a Certified Ethical Hacker.
Author : William Webb
Publisher : John Wiley & Sons
Page : 274 pages
File Size : 48,40 MB
Release : 2007-01-30
Category : Technology & Engineering
ISBN : 0470065133
The definitive assessment of how wireless communications will evolve over the next 20 years. Predicting the future is an essential element for almost everyone involved in the wireless industry. Manufacturers predict the future when they decide on product lines to develop or research to undertake, operators when they buy licences and deploy networks, and academics when they set PhD topics. Wireless Communications: The Future provides a solid, clear and well-argued basis on which to make these predictions. Starting with a description of the current situation and a look at how previous predictions made in 2000 have fared, the book then provides the contributions of six eminent experts from across the wireless industry. Based on their input and a critical analysis of the current situation, it derives detailed forecasts for 2011 through to 2026. This leads to implications across all of the different stakeholders in the wireless industry and views on key developments. Presents clear and unambiguous predictions, not a range of scenarios from which the user has to decide Includes chapters covering existing wireless systems which provide solid tutorial material across a wide range of wireless devices Offers a range of views of the future from high profile contributors in various areas of the industry and from around the globe, including contributions from Vodafone and Motorola Provides a comprehensive guide to current technologies, offering keen analysis of key drivers, end user needs and key economic and regulatory constraints This book, compiled by a renowned author with a track record of successful prediction, is an essential read for strategists working for wireless manufacturers, wireless operators and device manufacturers, regulators and professionals in the telecoms industry, as well as those studying the topic or with a general interest in the future of wireless communications.
