Автор: Dempster Barrie, Garrison Kerry
Издательство: Packt Publishing
Год издания: 2006
isbn: 1904811930
Количество страниц: 166
Язык: english
Формат: PDF
TrixBox is a telephone system based on the popular open source Asterisk PBX (Private Branch eXchange) Software. TrixBox allows an individual or organization to setup a telephone system with traditional telephone networks as well as Internet based telephony or VoIP (Voice over Internet Protocol). SugarCRM is already integrated with Asterisk, hence it has been bundled with Trixbox too to increase flexibility. This book guides the reader in the setup of this system and how to manage the telephone system. The book begins by introducing telephony concepts before detailing how to plan a telephone system and moving on to the installation, configuration, and management of a feature packed PBX. This book provides examples of a well laid out telephone system with accompanying spreadsheets to aid the reader in building stable telephony infrastructure.
Автор: Gwenael Le Bodic
Издательство: Wiley
Год издания: 2003
isbn: 0-470-86253-X
Количество страниц: 270
Язык: english
Формат: PDF
The Multimedia Messaging Service (MMS) is regarded as the best-of-the breed of proven messaging technologies, surpassing SMS and electronic mail to offer a truly multimedia experience to mobile users. The first commercial solutions appeared on the market in 2002 and the penetration rate of MMS is now quickly approaching the required level for mass-market adoption. By leveraging accessible technologies, MMS has gained wide acceptance from major market players and provides great business opportunities for the whole telecommunications industry.
Автор: Jason R. Rich
Издательство: McGraw-Hill
Год издания: 2004
isbn: 0-07-226435-7
Количество страниц: 385
Язык: english
Формат: PDF
Kick off your shoes and let How to Do Everything with Smartphone show you the essentials of operation, plus enough Windows mobile add-ons and customization tricks to make you want to 86 your other communications devices. Combine cutting edge PDA technology with wireless communication and use scheduling software, finance and text tools, wireless Web, database management software, and much more. So, c'mon, chief, get the book and get smart! You’ll never look at a phone booth the same way again
Автор: Ahmed El-Rabbany
Издательство: Artech House
Год издания: 2002
isbn: 1580531830
Количество страниц: 194
Язык: english
Формат: PDF
If you're looking for an up-to-date, easy-to-understand treatment of the GPS (Global Positioning System), this one-of-a-kind resource offers you the knowledge you need for your work, without bogging you down with advanced mathematics. It addresses all aspects of the GPS, emphasizes GPS applications, examines the GPS signal structure, and covers the key types of measurement being utilized in the field today. You get an in-depth discussion on the errors and biases that affect GPS measurements, along with guidance on how to overcome them. Moreover, the book shows how the GPS can be used for a number of different accuracy levels. Datums, coordinate systems, and map projections are discussed in a simple manner, offering you a clear understanding of this widely misunderstood area. This unique reference also examines the integration of the GPS with other systems, and looks at future GPS modernization. Over 75 illustrations help clarify major topics throughout the book
Автор: Горнаков С. Г.
Издательство: ДМК Пресс
Год издания: 2005
isbn: 5-94074-030-8
Количество страниц: 452
Язык: русский
Формат: PDF
Создание мобильных приложений для операционной системы Symbian - сложная и трудоемкая задача. Эта книга познакомит вас с основами программирования для Symbian OS на языке программирования C++, а одна из глав посвящена программированию Java 2 ME приложений. Темы, рассматриваемые в книге весьма разносторонние - это интегрированные среды программирования Code Warrior for Symbian, C++ BuilderX Mobile Studio, инструментальные средства разработчика SDK от Symbian, Sony Ericsson и Nokia для платформ UIQ, серии 60, серии 80 и серии 90. Большой объем информации освящает вопросы, связанные с программной архитектурой операционной системы, основными идиомами программирования в Symbian OS, структурой и созданием GUI приложения, локализацией, работой с меню, элементами пользовательского интерфейса, графикой, изображениями, созданием инсталляционного пакета. Книга будет интересна широкому кругу читателей, желающим самостоятельно изучить программирование для операционной системы Symbian на языке C++.
Автор: Miikka Poikselka, Georg Mayer, Hisham Khartabil
Издательство: Wiley
Год издания: 2004
isbn: 047087113X
Количество страниц: 450
Язык: english
Формат: PDF
We have telephony to talk to each other, messaging to dispatch mail or instant messages, browsing to read published content and search engines to locate content sites. However, current mobile networks do not provide the possibility for one application rich terminal to communicate with another in a peer-to-peer session beyond voice calls. Mobile telephony with the current technology has been hugely successful and shows that there is immense value in communicating with peers while being mobile, and with increasingly available smarter multimedia terminals the communication experience will be something more than just exchanging voice. Those multimedia terminals need IP multimedia networks. Hence, the Third Generation Partnership Project (3GPP) has developed a standard for SIP based IP multimedia service machinery known as 'The IMS (IP Multimedia Subsystem)' and this informative book explains everything you need to know about it...
Автор: С. А. Сотников
Издательство: Ремонт и сервис
Год издания: 2005
isbn: 5-90219-719-8
Количество страниц: 91
Язык: русский
Формат: DJVU
Предлагаемая книга является первой и единственной в настоящее время публикацией в России по программированию сотовых телефонов, а также ремонту их программной начинки. В ней приведены материалы по программированию большинства распространенных в России моделей сотовых телефонов торговых марок SIEMENS, MOTOROLA, NOKIA и LG (всего более 200 моделей)
Автор: Madjid Nakhjiri, Mahsa Nakhjiri
Издательство: Wiley
Год издания: 2005
isbn: 0470011947
Количество страниц: 318
Язык: english
Формат: PDF
AAA (Authentication, Authorization, Accounting) describes a framework for intelligently controlling access to network resources, enforcing policies, and providing the information necessary to bill for services. AAA and Network Security for Mobile Access is an invaluable guide to the AAA concepts and framework, including its protocols Diameter and Radius. The authors give an overview of established and emerging standards for the provision of secure network access for mobile users while providing the basic design concepts and motivations. AAA and Network Security for Mobile Access Covers trust, i.e., authentication and security key management for fixed and mobile users, and various approaches to trust establishment. Discusses public key infrastructures and provides practical tips on certificates management. Introduces Diameter, a state-of-the-art AAA protocol designed to meet today's reliability, security and robustness requirements, and examines Diameter-Mobile IP interactions. Explains RADIUS (Remote Authentication Dial-In User Services) and its latest extensions. Details EAP (Extensible Authentication Protocol) in-depth, giving a protocol overview, and covering EAP-XXX authentication methods as well as use of EAP in 802 networks. Describes IP mobility protocols including IP level mobility management, its security and optimizations, and latest IETF seamless mobility protocols. Includes a chapter describing the details of Mobile IP and AAA interaction, illustrating Diameter Mobile IP applications and the process used in CDMA2000.Contains a section on security and AAA issues to support roaming, discussing a variety of options for operator co-existence, including an overview of Liberty Alliance This text will provide researchers in academia and industry, network security engineers, managers, developers and planners, as well as graduate students, with an accessible explanation of the standards fundamental to secure mobile access.
Автор: Gwenael Le Bodic
Издательство: Wiley
Год издания: 2005
isbn: 0470011432
Количество страниц: 455
Язык: english
Формат: PDF
Mobile Messaging Technologies and Services provides an in-depth description of existing and forthcoming messaging services and underlying technologies. The Short Message Service (SMS) has been a tremendous success in the messaging roadmap and the recently introduced Enhanced Messaging Service (EMS), an application-level extension of SMS, is expected to offer a smooth transition to the forthcoming Multimedia Messaging Service (MMS). Identified as the most important service for 3GPP, MMS provides the potential for the realization of future-proof services by meeting the requirements of various business models as the Internet and the mobile telecommunications environment merges. Person-to-person messaging constitutes the principal reason for the introduction of MMS to the market and it will also provide the opportunity to carry out user trials in the machine-to-person scenarios. In this context, value-added service providers will take advantage of MMS to promote multimedia contents to a wide range of mobile devices (location-based services, mobile commerce, online photo albums, etc.). The provision of MMS value-added services will undoubtedly offer appealing business opportunities for content providers and service developers. Explains and illustrates existing services including the Short Message Service (SMS) and the Enhanced Messaging Service (EMS) Offers a complete description of the forthcoming Multimedia Messaging Service (MMS) Illustrates the most common examples of messaging applications usage and covers advanced topics for operators involved in the deployment and configuration of mobile messaging systems Describes the processes involved in standardizing telecommunications services and technologies (3GPP, WAP Forum, IETF and W3C) This volume represents a stimulating practical reference book for operators, content providers, manufacturers and developers of messaging applications and will also appeal to researchers and students
Автор: Timo Halonen, Javier Romero, Juan Melero
Издательство: Wiley
Год издания: 2003
isbn: 0470866942
Количество страниц: 656
Язык: english
Формат: PDF
GSM, GPRS and EDGE Performance - Second Edition provides a complete overview of the entire GSM system. GSM (Global System for Mobile Communications) is the digital transmission technique widely adopted in Europe and supported in North America. It features comprehensive descriptions of GSM’s main evolutionary milestones - GPRS, (General Packet Radio Services) is a packet-based wireless communication service that promises data rates from 56 up to 114 Kbps and continuous connection to the Internet for mobile phone and computer users. AMR and EDGE (Enhanced Data GSM Environment), and such developments have now positioned GERAN (GSM/EDGE Radio Access Network) as a full 3G radio standard. The radio network performance and capabilities of GSM, GPRS, AMR and EDGE solutions are studied in-depth by using revealing simulations and field trials.
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