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H.323
34,00 € *
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High Quality Content by WIKIPEDIA articles! H.323 is an umbrella Recommendation from the ITU Telecommunication Standardization Sector (ITU-T) that defines the protocols to provide audio-visual communication sessions on any packet network. The H.323 standard addresses call signaling and control, multimedia transport and control, and bandwidth control for point-to-point and multi-point conferences. It is widely implemented by voice and videoconferencing equipment manufacturers, is used within various Internet real-time applications such as GnuGK and NetMeeting and is widely deployed worldwide by service providers and enterprises for both voice and video services over Internet Protocol (IP) networks. It is a part of the ITU-T H.32x series of protocols, which also address multimedia communications over Integrated Services Digital Network (ISDN), Public Switched Telephone Network (PSTN) or Signaling System 7 (SS7), and 3G mobile networks. H.323 Call Signaling is based on the ITU-T Recommendation Q.931 protocol and is suited for transmitting calls across networks using a mixture of IP, PSTN, ISDN, and QSIG over ISDN.

Anbieter: Dodax
Stand: 08.08.2020
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Gigaset DA310 Analoges Telefon Weiß
21,98 € *
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Making and taking calls is simple with the Gigaset DA310. The 4 direct keys let you push a single button to connect to the contact of your choice. Enjoy the convenience of another 10 speed dial numbers enabling further rapid connection options. The Gigaset DA310 gives you the choice of 3 melodies and volumes to alert you to incoming calls, or alternatively you can turn the ringer off when you want some peace and quiet. To quickly call back the last person you called, simply use the last number redial function to get in contact. If you need an easy-to-use corded desk phone, with all the basic features and more, choose the Gigaset DA310. Simple yet flexible While remaining straightforward to operate and offering easy installation, the Gigaset DA310 is also versatile. Pabx and PSTN compatibility allows you to either connect straight to the fixed line network, or use it as part of an internal network of phones within the home or office. The Gigaset DA310 is also wall mountable, meaning you can choose to save on valuable desk space. With a handset cable length that stretches up to two metres and a further two metres of cable from the phone to the socket you have the freedom to move around as you please. As well as being hearing aid compatible the Gigaset DA310 allows you to prevent the caller from hearing what you are saying by pressing the mute key. The dialling method - tone or pulse - is also adjustable, as is the flash time. Make life easy for yourself and choose the Gigaset DA310 for your next corded desk phone.

Anbieter: Dodax
Stand: 08.08.2020
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Gigaset DA310 Analoges Telefon Schwarz
24,96 € *
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Making and taking calls is simple with the Gigaset DA310. The 4 direct keys let you push a single button to connect to the contact of your choice. Enjoy the convenience of another 10 speed dial numbers enabling further rapid connection options. The Gigaset DA310 gives you the choice of 3 melodies and volumes to alert you to incoming calls, or alternatively you can turn the ringer off when you want some peace and quiet. To quickly call back the last person you called, simply use the last number redial function to get in contact. If you need an easy-to-use corded desk phone, with all the basic features and more, choose the Gigaset DA310. Simple yet flexible While remaining straightforward to operate and offering easy installation, the Gigaset DA310 is also versatile. Pabx and PSTN compatibility allows you to either connect straight to the fixed line network, or use it as part of an internal network of phones within the home or office. The Gigaset DA310 is also wall mountable, meaning you can choose to save on valuable desk space. With a handset cable length that stretches up to two metres and a further two metres of cable from the phone to the socket you have the freedom to move around as you please. As well as being hearing aid compatible the Gigaset DA310 allows you to prevent the caller from hearing what you are saying by pressing the mute key. The dialling method - tone or pulse - is also adjustable, as is the flash time. Make life easy for yourself and choose the Gigaset DA310 for your next corded desk phone.

Anbieter: Dodax
Stand: 08.08.2020
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Wireless Local Loops: Theory and Applications
362,00 CHF *
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The demand for greater flexibility both in bandwidth allocation as well as in geographical terms has opened up the new application area of Wireless Local Loops (WLL). WLL provide a telephone system where subscribers are connected to the Public Switches Telephone Network (PSTN) using radio signals rather than copper wire for part or all of the connection between the subscriber and the switch. Divided into two parts, theoretical aspects and applications, Wireless Local Loops brings together contributions from leading world experts in this increasingly important section of wireless communication systems. - Covers all aspects of WLL from design to implementation. - Explains the theoretical aspects of WLL including areas such as propagation, modulation, coding, channel modelling and also traffic engineering issues. - Presents the applications areas of WLL including interference, prototype designs of various access protocols, a mobility manager, a remote management systems and the provision of multimedia services. By providing a self-contained treatment of the progressively important area Wireless Local Loops will have immense appeal to practising engineers, researchers and graduate students needing to understand the bakground to WLL and its major role in the provision of new services.

Anbieter: Orell Fuessli CH
Stand: 08.08.2020
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Digital Signal Transmission
77,90 CHF *
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This textbook will provide both undergraduates and practising engineers with an up-to-date and thorough grounding in the concepts of modern digital transmission. The book is not encyclopaedic, rather it selects the key concepts and processes and explains them in a deliberate pedagogic style. These concepts and processes are then illustrated by a number of system descriptions. The book is divided into three parts. The longest, Part II, describes the basic processes of digital transmission, such as matched filter detection, pulse shaping, line coding, channel coding, error detection and correction, etc. Understanding the concepts behind these processes requires a grasp of basic mathematical models, and this is provided in Part I. Finally, to put the processes in context, Part III describes elements of the public switched telephone network. The text is written throughout in a modern, digital context, and is comprehensively illustrated with helpful figures. Although the mathematical models (time- and frequency-domain concepts) have wider relevance, they are developed specifically for modelling digital signals. The processes described are those found in current transmission systems, and the description of the PSTN includes an outline of newly formulated standards for the synchronous digital hierarchy (SDH), SONET and for broadband ISDN (ATM). The book will be of great value to 2nd and 3rd year undergraduates studying telecommunications, as well as to graduate trainees and practising engineers. It is appropriate for either private study or as a text associated with a taught telecommunications course. The many worked examples and exercises with solutions will be particularly helpful.

Anbieter: Orell Fuessli CH
Stand: 08.08.2020
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Digital Signal Transmission
69,90 CHF *
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This textbook will provide both undergraduates and practising engineers with an up-to-date and thorough grounding in the concepts of modern digital transmission. The book is not encyclopaedic, rather it selects the key concepts and processes and explains them in a deliberate pedagogic style. These concepts and processes are then illustrated by a number of system descriptions. The book is divided into three parts. The longest, Part II, describes the basic processes of digital transmission, such as matched filter detection, pulse shaping, line coding, channel coding, error detection and correction, etc. Understanding the concepts behind these processes requires a grasp of basic mathematical models, and this is provided in Part I. Finally, to put the processes in context, Part III describes elements of the public switched telephone network. The text is written throughout in a modern, digital context, and is comprehensively illustrated with helpful figures. Although the mathematical models (time- and frequency-domain concepts) have wider relevance, they are developed specifically for modelling digital signals. The processes described are those found in current transmission systems, and the description of the PSTN includes an outline of newly formulated standards for the synchronous digital hierarchy (SDH), SONET and for broadband ISDN (ATM). The book will be of great value to 2nd and 3rd year undergraduates studying telecommunications, as well as to graduate trainees and practising engineers. It is appropriate for either private study or as a text associated with a taught telecommunications course. The many worked examples and exercises with solutions will be particularly helpful.

Anbieter: Orell Fuessli CH
Stand: 08.08.2020
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Voice over IP Fundamentals
34,90 CHF *
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A systematic approach to understanding the basics of Voice over IP Understand the basics of PSTN services and IP signaling protocols, including SS7 Learn how VoIP can run the same applications as the existing telephony system, but in a more cost-efficient and scalable manner Delve into such VoIP topics as jitter, latency, packet loss, codecs, quality of service tools, and mean opinion scores Learn about the functional components involved in using Cisco gateways to deploy VoIP networks Voice over IP (VoIP), which integrates voice and data transmission, is quickly becoming an important factor in network communications. It promises lower operational costs, greater flexibility, and a variety of enhanced applications. Voice over IP Fundamentals provides a thorough introduction to this new technology to help experts in both the data and telephone industries plan for the new networks. You will learn how the telephony infrastructure was built and how it works today, the major concepts concerning voice and data networking, transmission of voice over data, and IP signaling protocols used to interwork with current telephony systems. The authors cover various benefits and applications of VoIP and how to ensure good voice quality in your network. 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.

Anbieter: Orell Fuessli CH
Stand: 08.08.2020
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CCNA Voice Study Guide
50,00 CHF *
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The ultimate guide to the new CCNA voice network administrator certification examThe new CCNA Voice exam tests candidates on their ability to implement a Cisco VoIP solution. Network administrators of voice systems will appreciate that the CCNA Voice Study Guide focuses completely on the information required by the exam.Along with hands-on labs and an objective map showing where each objective is covered, this guide includes a CD with the Sybex Test Engine, flashcards, and entire book in PDF format.* The new CCNA Voice certification will be valuable for administrators of voice network systems using Cisco VoIP solutions* From Sybex, the leading CCNA publisher, this guide offers in-depth coverage of every exam objective and the technology developed by Cisco for VoIP systems* Covers the components of the Cisco Unified Communications Architecture as well as PSTN and VoIP components and technologies* Shows how to configure gateways, voice ports, and dial peers* Demonstrates how to configure a Cisco network to support VoIP and implement voicemail* CD-ROM includes the Sybex Test Engine, flashcards, and entire book in PDF formatCCNA Voice Study Guide will thoroughly prepare candidates for the new CCNA Voice certification.Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.

Anbieter: Orell Fuessli CH
Stand: 08.08.2020
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CCNA Voice Study Guide
50,00 CHF *
ggf. zzgl. Versand

The ultimate guide to the new CCNA voice network administrator certification examThe new CCNA Voice exam tests candidates on their ability to implement a Cisco VoIP solution. Network administrators of voice systems will appreciate that the CCNA Voice Study Guide focuses completely on the information required by the exam.Along with hands-on labs and an objective map showing where each objective is covered, this guide includes a CD with the Sybex Test Engine, flashcards, and entire book in PDF format.* The new CCNA Voice certification will be valuable for administrators of voice network systems using Cisco VoIP solutions* From Sybex, the leading CCNA publisher, this guide offers in-depth coverage of every exam objective and the technology developed by Cisco for VoIP systems* Covers the components of the Cisco Unified Communications Architecture as well as PSTN and VoIP components and technologies* Shows how to configure gateways, voice ports, and dial peers* Demonstrates how to configure a Cisco network to support VoIP and implement voicemail* CD-ROM includes the Sybex Test Engine, flashcards, and entire book in PDF formatCCNA Voice Study Guide will thoroughly prepare candidates for the new CCNA Voice certification.Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.

Anbieter: Orell Fuessli CH
Stand: 08.08.2020
Zum Angebot