Angebote zu "Telecommunications" (21 Treffer)

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The Cable and Telecommunications Professionals'...
62,99 € *
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The Cable and Telecommunications Professionals' Reference ab 62.99 EURO PSTN IP and Cellular Networks and Mathematical Techniques. 3. Auflage

Anbieter: ebook.de
Stand: 13.07.2020
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Tnz Group
49,00 € *
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High Quality Content by WIKIPEDIA articles! TNZ Group Ltd is a New Zealand based telecommunications supplier founded in 2001. It was formed as a new corporate entity to feed the growing messaging requirements of today's leading businesses, specializing in building solutions to suit customer requests. Working with Fax, SMS, Email, PSTN and VoIP, TNZ Group Ltd works to take these technologies and integrate them with the Internet to create Unified messaging.It largely operates as a telecommunications wholesaler and supplier, offering its messaging technologies to resellers. TNZ Group Ltd is privately owned and operated from Auckland, New Zealand.

Anbieter: Dodax
Stand: 13.07.2020
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Local Loop
29,00 € *
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In telephony, the local loop is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the carrier or telecommunications service provider''s network. At the edge of the carrier access network in a traditional PSTN scenario, the local loop terminates in a circuit switch housed in an ILEC CO. Traditionally, the local loop was wireline in nature from customer to central office, specifically in the form of an electrical circuit provisioned as a single twisted pair in support of voice communications. Where the number of local loops was restricted, different customers could share the same loop, known as a party line. Modern implementations may include a digital loop carrier system segment or fiber optic transmission system known as fiber-in-the-loop. The local loop may terminate at a circuit switch owned by a CLEC and housed in a POP, which typically is either an ILEC CO or a "carrier hotel". A local loop may be provisioned to support data communications applications, or combined voice and data such as digital subscriber line.

Anbieter: Dodax
Stand: 13.07.2020
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Speech Quality Estimation of Voice over Interne...
68,00 € *
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Telecommunications technologies are evolving at a rapid pace. The old Public Switched Telephone Network (PSTN) is being replaced with wireless and voice over IP (VoIP) systems. This requires the service providers to offer their services on competitive prices, on one hand, and to ensure the interoperability of their services over hetero- geneous networks on the other. Added to this is the challenge of keeping up with the expectations of the clientele as regards quality of service (QoS). Thus to enable the successful deployment and functioning of a telecommunications network, it is equally important to estimate the speech quality as it may be perceived by the humans. The goal of this research was to derive superior non-intrusive speech quality esti- mation models. Model superiority was sought in a multi-objective sense: 1) enhance- ment of prediction accuracy of the derived models as compared to the previous ones. 2) model simplicity or parsimony was desired as it may enhance the computational efficiency. In this research this is achieved by employing a novel approach based on Genetic Programming (GP).

Anbieter: Dodax
Stand: 13.07.2020
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Network Switching Subsystem
29,00 € *
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Network switching subsystem (NSS) is the component of a GSM system that carries out switching functions and manages the communications between mobile phones and the Public Switched Telephone Network (PSTN). It is owned and deployed by mobile phone operators and allows mobile phones to communicate with each other and telephones in the wider telecommunications network. The architecture closely resembles a telephone exchange, but there are additional functions which are needed because the phones are not fixed in one location. Each of these functions handle different aspects of mobility management and are described in more detail below.

Anbieter: Dodax
Stand: 13.07.2020
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Teletraffic Engineering
34,00 € *
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High Quality Content by WIKIPEDIA articles! Teletraffic engineering is the application of traffic engineering theory to telecommunications. Teletraffic engineers use their basic knowledge of statistics including Queueing theory, the nature of traffic, their practical models, their measurements and simulations to make predictions and to plan telecommunication networks at minimum total cost. These tools and basic knowledge help provide reliable service at lower cost. Because the approach is so different to different networks, the networks are handled separately here: the PSTN, broadband networks, mobile networks, and networks where the possibility of traffic being heavy is more frequent than anticipated.

Anbieter: Dodax
Stand: 13.07.2020
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NGN Architectures, Protocols and Services
161,00 CHF *
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Comprehensive coverage explaining the correlation and synergy between Next Generation Networks and the existing standardized technologies This book focuses on Next Generation Networks (NGN); in particular, on NGN architectures, protocols and services, including technologies, regulation and business aspects. NGN provides convergence between the traditional telecommunications and the Internet, and it is globally standardized by the ITU (International Telecommunication Union), where ITU is the United Nations specialized agency for Information and Communication Technologies - ICTs. The convergence towards the NGN is based on the Internet technologies, and the introductory chapters cover the Internet fundamentals of today, including architectures, protocols (IPv4, IPv6, TCP, DNS, etc.), Internet services (WWW, e-mail, BitTorrent, Skype, and more), as well as Internet governance. Further, the prerequisite for convergence of all ICT services over single network architectures is broadband access to the Internet. Hence, the book includes architectures of fixed broadband Internet access networks, such as DSL (Digital Subscriber Line) networks, cable networks, FTTH (Fiber To The Home), next generation passive and active optical networks, and metro Ethernet. It also covers network architectures for next generation (4G) mobile and wireless networks (LTE/LTE-Advanced, and Mobile WiMAX 2.0), then Fixed Mobile Convergence - FMC, next generation mobile services, as well as business and regulatory aspects for next generation mobile networks and services. * Comprehensive coverage explaining the correlation and synergy between Next Generation Networks and the existing standardized technologies * Focuses on Next Generation Networks (NGN) as defined by the ITU, including performance, service architectures and mechanisms, common IMS (IP Multimedia Subsystem), control and signalling protocols used in NGN, security approaches, identity management, NGN Service Overlay Networks, and NGN business models * Examines the most important NGN services, including QoS-enabled VoIP, IPTV over NGN, web services in NGN, peer-to-peer services, Ubiquitous Sensor Network (USN) services, VPN services in NGN, Internet of things and web of things * Includes the transition towards NGN from the PSTN (Public Switched Telephone Networks) and from the best-effort Internet via the same Internet access * Explores advanced topics such as IPv6-based NGN, network virtualization, and future packet based networks, as well as business challenges and opportunities for the NGN evolved networks and services Essential reading for engineers and employees from regulatory bodies, government organisations, telecommunication companies, ICT companies.

Anbieter: Orell Fuessli CH
Stand: 13.07.2020
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Radio System Design for Telecommunication
339,00 CHF *
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Step-by-step tutorial to master current design techniques for wireless communication systems The Third Edition of Radio System Design for Telecommunications brings this highly acclaimed book fully up to date with the latest technological advances and new applications. At the same time, the hallmarks of the previous editions, including the text's popular tutorial presentation, have been retained. Readers therefore get all the tools and guidance they need to master an essential set of current design techniques for radio systems that operate at frequencies of 3 MHz to 100 GHz. Using simple mathematics, the author illustrates design concepts and applications. The book's logical organization, beginning with a discussion of radio propagation problems, enables readers to progressively develop the skills and knowledge needed to advance in the text. Topics that are new to the Third Edition include: * Chapter devoted to wireless LANs (WLANs) as detailed in IEEE 802.11 * Subsections covering IEEE 802.15, 802.16, 802.20, and the wireless metropolitan area network (WMAN) * WiFi, WiMax, and UWB applications that have recently experienced explosive growth * Broadband radio in telecommunications * The use of very small aperture satellite terminal (VSAT) systems as an economical alternative to public switched telecommunication networks (PSTN) Review questions and problems at the end of each chapter engage readers' newfound skills and knowledge and help them assess whether they are ready to progress to the next chapter. References are provided for readers who want to investigate particular topics in greater depth. Students in wireless telecommunications will find the book's tutorial style ideal for learning all the ins and outs of radio system design, whereas professionals in the industry will want to refer to the Third Edition for its clear explanations of the latest technology and applications.

Anbieter: Orell Fuessli CH
Stand: 13.07.2020
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Charging for Mobile All-IP Telecommunications
188,00 CHF *
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This book provides a complete and comprehensive overview of 3G UMTS charging services Evolving from offline billing of traditional telecommunications, charging for IP services in mobile networks is challenging; charging convergence is one of the major trends in the telecom industry. Advanced mobile telecommunications incorporates data applications with real-time control and management, and requires a convergent and flexible online charging system. Such convergence is essential to mitigate fraud and credit risks in order to provide more personalized information to users about charges and credit limit controls. Charging for Mobile All-IP Telecommunications provides comprehensive and practical coverage of online and offline charging based on mobile operator experiences, and the latest efforts undertaken by the UMTS specifications. Key features: * Presents a complete overview of the telecommunications charging system, including the evolution from 2G to 3G and all-IP network charging frameworks * Discusses all management aspects related to charging and billing processes, with a focus on the major trends and developments within the telecoms industry * Provides an overview of the telecom networks such as PSTN, GSM, UMTS and IMS * Covers the concepts of the telecom charging on mobile services and the new technologies for implementing online charging system, such as GTP' and Diameter protocol * Contains coverage on network nodes and data flows in relation to charging of mobile applications, such as IMS call and content downloading * Explains the IP-based online charging system, protocol details and recent trends in charging for mobile telecom industry This book is an invaluable resource for graduate students, telecoms and IP engineers, network service providers and system architects. Information technologists and networking equipment manufacturers will also find this book insightful.

Anbieter: Orell Fuessli CH
Stand: 13.07.2020
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